Lisbon to Washington Flights. Flights from LIS to IAD are operated 14 times a week, with an average of 2 flights per day. Departure times vary between 09:15 - 17:40. The earliest flight departs at 09:15, the last flight departs at 17:40. However, this depends on the date you are flying so please check with the full flight schedule above to see ... The cheapest month for flights from Lisbon to Washington, D.C. is November, where tickets cost $517 on average. On the other hand, the most expensive months are July and August, where the average cost of tickets is $997 and $898 respectively. Washington. LIS. Lisbon. $704. Roundtrip. found 5 days ago. Book one-way or return flights from Washington to Lisbon with no change fee on selected flights. Earn your airline miles on top of our rewards! Get great 2024 flight deals from Washington to Lisbon now! On average, a flight to Lisbon costs $795. The cheapest price found on KAYAK in the last 2 weeks cost $299 and departed from San Francisco. The most popular routes on KAYAK are Boston to Lisbon which costs $1,140 on average, and Washington, D.C. to Lisbon, which costs $998 on average. See prices from:Welcome to the 180 Degrees Consulting Católica-Lisbon branch, the only one present in Portugal! We are located close to the center of Lisbon, a young and dynamic city. Our branch was founded in 2016 by students at Católica Lisbon School of Business and Economics who aim to bring the vision, ideas, goals, and values of 180 DC to life in … Lisbon Portugal Time and Washington DC USA Time Converter Calculator, Lisbon Time and Washington DC Time Conversion Table. TIMEBIE · US Time Zones · Canada · Europe · Asia · Middle East · Australia · Africa · Latin America · Russia · Search Time Zone · Multiple Time Zones · Sun Rise Set · Moon Rise Set · Time Calculation · Unit ... The cheapest month for flights from Washington, D.C. Reagan-National Airport to Lisbon is February, where tickets cost $615 on average. On the other hand, the most expensive months are July and June, where the average cost of tickets is $1,091 and $1,081 respectively. Lisbon. 1+ stops From $439. Madeira. 1+ stops From $685. Ponta Delgada. 1+ stops From $715. See more destinations. Flying from Washington, D.C. to Portugal. The things to …Prepare your stay in Lisbon (LIS) by visiting our latest updates related to Covid-19. Find your cheap round-trip flight Washington, D.C. Lisbon with Air France at $1,128. Discover our selection of cheapest return flights to Lisbon from Washington, D.C..Prices were available within the past 7 days and start at $329 for one-way flights and $330 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from Lisbon to Washington with no change fee on selected flights. Earn your airline miles on top of our rewards!Enter flight information. Continue. See all TAP flight arrivals and departures. You can search by flight number, airport or destination and get complete information about the flight.Lisbon is known for its historic sites perched atop rolling hills. LxFactory still brings old charm, with its 19th-century industrial warehouse setting. However, the feeling here is hip and modern.So now we can finally get an idea of the total travel time from Washington, DC to Lisbon (Ohio) including time spent getting to/from the airports, an estimated wait time of 2 hours at the airport for TSA security lines and waiting at the gate, and the actual flight itself. Total travel time: 5 hoursLisbon is brimming with culture, from museums and galleries, to gardens and festivals. The Monsanto Forest Park is Lisbon’s largest park and is a popular place to discover the city’s natural surroundings. Travelling around the city is extremely easy thanks to Lisbon’s highly efficient public transport system, which consists of trams ...All flight schedules from Lisbon Airport, Portugal to Washington Dulles International , Virginia , USA . This route is operated by 2 airline (s), and the flight time is 9 hours and 20 minutes. The distance is 3602 miles. Portugal.My dates are flexible. SHOW FARES. Include Nearby Airports. Search for a Delta flight round-trip, multi-city or more. You choose from over 300 destinations worldwide to find a flight that fits your schedule.TP231 and Lisbon LIS to Washington IAD Flights. Flight TP231 is code-shared by 1 airline using the flight number B66772. Other flights departing from Lisbon LIS: U26733, TP1903, SN3816, TP532. Other flights arriving at Washington IAD: SK925, UA919, UA2344, AC8620. All flights connecting Lisbon LIS to Washington IAD.Get United's best fares today on flights from Washington, D.C. to Portugal. 1 Passenger, Economy. From. To. Departure. 04/26/24. Return. Home. United flights. Flights to …BOAC Flight 777A was a KLM flight scheduled as a British Overseas Airways Corporation civilian airline flight from Portela Airport in Lisbon, Portugal to Whitchurch Airport near Bristol, England. On 1 June 1943, the Douglas DC-3 serving the flight was attacked by eight German Junkers Ju 88 bombers and crashed into the Bay of Biscay, killing all ...Airline: TAP Air Portugal Aircraft: Airbus A321LRneo Flight #: TP1352 Route: Lisbon (LIS) > London (LHR) Date: September 23, 2022 Duration: 2hr 7min Cabin and Layout: 16 lie-flat seats in a staggered 2-2, 1-1 configuration Seat: 2D Cost: $336 After wrapping up a trip to the Algarve with a stay at the brand-new W Algarve, Portugal, I was …Charlie B. WANDJI, ACCA,ONECCA. Exec. Director/Co-Founder - DC Trading LTD. 9h. I'm attending Lisbon Energy Summit 2024, to join me click here https://lnkd.in/exsJJdge …Prepare your stay in Lisbon (LIS) by visiting our latest updates related to Covid-19. Find your cheap round-trip flight Washington, D.C. Lisbon with Air France at $1,128. Discover our selection of cheapest return flights to Lisbon from Washington, D.C..Compare flight deals to Lisbon from Washington D.C. from over 1,000 providers. Then choose the cheapest or fastest plane tickets. Flex your dates to find the best Washington D.C.-Lisbon ticket prices. If you are flexible when it comes to your travel dates, use Skyscanner's 'Whole month' tool to find the cheapest month, and even day to fly to ...Help. Find cheap flights to Morocco with Google Flights. Explore popular destinations in Morocco and book your flight. Cheap Flights from Washington to Lisbon (IAD-LIS) Prices were available within the past 7 days and start at $284 for one-way flights and $361 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from Washington to Lisbon with no change fee on selected ... The deals you see here are the lowest prices for ANA (All Nippon Airways) flights to Lisbon found in the last 4 days, and are subject to change and availability. Find the cheapest time to fly to Lisbon with ANA (All Nippon Airways) Flexible on travel dates? Here's when plane tickets are cheapest. Mar.Indices Difference. Consumer Prices in Lisbon are 42.9% lower than in Washington, DC (without rent) Consumer Prices Including Rent in Lisbon are 46.4% lower than in Washington, DC. Rent Prices in Lisbon are 51.0% lower than in Washington, DC. Restaurant Prices in Lisbon are 44.8% lower than in Washington, DC.Washington D.C. Compare Lisbon to Washington D.C. flight deals. Find the cheapest month or even day of the year to fly to Washington D.C. Book the best …Cheap flights from Washington, D.C. to Lisbon from $282. Round-trip. 1 adult. Economy. 0 bags. Direct flights only. From? To? Mon 4/22. Mon 4/29. Search. Deals available from … Explore Air Canada flights from Washington, D.C. to Portugal from USD 1,115* Cheap Flights from Washington to Lisbon (IAD-LIS) Prices were available within the past 7 days and start at $284 for one-way flights and $361 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from Washington to Lisbon with no change fee on selected ... A clip released by AC/DC of their first gig with Axl Rose on vocals at Passeio Maritimo de Alges in Lisbon, Portugal.Listen to the best rock, and stay up to ...DC to Lisbon is one of the new routes TAP is launching this year. We have also been pleasantly surprised by the low fares and are booked on the new Chicago to Lisbon non-stop route in September. Our total cost is just over $1300 for both of us. We booked the fare category that allows changes (for a fee) plus 1 piece of checked luggage … Book cheap flights from Lisbon to Washington, D.C.. Enjoy award winning service and inflight entertainment with Tap Air Portugal. Find the lowest fares. The geographic midpoint between Washington-Dc and Lisbon is in 1,782.63 mi (2,868.87 km) distance between both points in a bearing of 90.20°. The shortest distance (air line) between Washington-Dc and Lisbon is 3,565.26 mi (5,737.74 km). The shortest route between Washington-Dc and Lisbon is according to the route planner. without making any stops. flight distance is 3,574 miles. flight time of 7 hours, 39 minutes. Washington, DC is 5 hours behind Lisbon. 282 Lisbon travel answers. 199 Washington, DC travel answers. Draw map. Flying non-stop from Washington, DC to Lisbon. How far is Lisbon from Washington, DC? Here's the quick answer if you have a private jet and you can fly in the fastest possible straight line. Flight distance: 3,574 miles or 5751 km. Flight time: 7 hours, 39 minutes.The time difference between Washington D.C. and Lisbon is 5 hours. Add 5 hours to Washington D.C. time to get Lisbon time.Apr 25, 2024 · Spend a day with the family at the Lisbon Zoo or the Lisbon Oceanarium. Best time to travel to Lisbon. Celebrate the end of winter at Lisbon Carnival, with parades showcasing colorful outfits and masks. The biannual Alkantara Festival, dedicated to the performing arts, includes street parties, concerts and shows. Sun, Apr 21 BWI – LIS with Fly Play. 1 stop. Fri, Apr 26 LIS – BWI with Fly Play. 1 stop. from $344. Lisbon.$357 per passenger.Departing Sun, Apr 28, returning Fri, May 3.Round-trip flight with Fly Play.Outbound indirect flight with Fly Play, departing from Baltimore Washington International on Sun, Apr 28, arriving in Lisbon.Inbound ...Get United's best fares today on flights from Washington, D.C. to Portugal. 1 Passenger, Economy. From. To. Departure. 04/26/24. Return. Home. United flights. Flights to …United flights from Washington, D.C. to Lisbon from. $ 845. * 1 Passenger, Economy. Home. United flights. Flights to Portugal. Washington, D.C. - Lisbon. … There are 2 airlines that fly nonstop from Washington, D.C. Dulles Intl Airport to Lisbon. They are TAP AIR PORTUGAL and United Airlines. The cheapest airline for this route is TAP AIR PORTUGAL, with the best one-way deal found costing $449. On average, the best prices for this route can be found at TAP AIR PORTUGAL. The two airlines most popular with KAYAK users for flights from London to Lisbon are SWISS and TAP AIR PORTUGAL. With an average price for the route of $268 and an overall rating of 7.8, SWISS is the most popular choice. TAP AIR PORTUGAL is also a great choice for the route, with an average price of $235 and an overall rating of 7.1.Clothes in Lisbon (Portugal) is 11% cheaper than in Washington D.C. (United States) Update prices: Update prices: Lisbon: Washington D.C. Diff: 1 pair of jeans (levis 501 or similar) €85 ($92) $57 + 62%: 1 summer dress in a …Lisbon (LIS) 05/14/24 - 05/23/24. Round trip. I. Business / First. from. $13,695* Updated: 11 hours ago. See Latest Fare *Fares displayed have been collected within the last 24hrs and may no longer be available at time of booking. Modifying this information may result in …It sits high up amidst the mythical Mountains of the Moon, displaying elegant baroque churches, colorful mansions and the grand palaces of former Portuguese kings and queens. Suggested tour: Sintra, Cascais, and Estoril: Full-Day Tour from Lisbon. 5. Enjoy the azulejos in the National Tile Museum.The cheapest return flight ticket from Washington Dulles Airport to Lisbon found by KAYAK users in the last 72 hours was for $382 on PLAY, followed by Royal Air Maroc ($558). …Meeting planner for Washington, District of Columbia and Lisbon, Portugal. To schedule a conference call or plan a meeting at the best time for both parties, you should try between 9:00 AM and 12:00 PM your time in Washington, DC. That will end up being between 2:00 PM and 5:00 PM in Lisbon, Portugal. The chart below shows overlapping …Explore all routes from Washington, D.C. to Lisbon. Los Angeles. Washington, D.C. Looking for flights from Washington, D.C. (WAS) to Lisbon (LIS)? Fly Air Canada, voted …Explore all routes from Washington, D.C. to Lisbon. Los Angeles. Washington, D.C. Looking for flights from Washington, D.C. (WAS) to Lisbon (LIS)? Fly Air Canada, voted …$489. Find Deal. sáb., oct. 12 - sáb., nov. 2. 12:30 pm - 7:15 pm LIS - IAD. 11h 45m 1 stop. 11:00 pm - 5:55 pm IAD - LIS. 14h 55m 1 stop. $490. Find Deal. sáb., oct. 12 - sáb., nov. …When you land in Lisbon, you will feel rested and ready for your trip. The best flight deals to Lisbon are available in November 2024 from Cleveland for as little as 552 $. *Please note: To provide you with the widest possible selection of flight destinations, some of the direct flights or connecting flights on lufthansa.com are operated by our ...Cheap flights from Washington, D.C. (WAS) to Lisbon (LIS) from $322. From? To? Round-trip One-way. mar. 4/16. mar. 4/23. 1 adult, Economy. Find deals. We …4 days ago · Washington is 5 hours behind of Lisbon. If you are in Washington, the most convenient time to accommodate all parties is between 9:00 am and 1:00 pm for a conference call or meeting. In Lisbon, this will be a usual working time of between 2:00 pm and 6:00 pm. If you want to reach out to someone in Lisbon and you are available anytime, you can ... TAP Air Portugal. 24,441 reviews. Headquarters: Aeroporto de Lisboa, Edificio 25 8 Andar, Lisbon Portugal 1704-801. 011 351 707 205 700. Website.Book cheap flights from Washington, D.C. to Lisbon. Enjoy award winning service and inflight entertainment with Tap Air Portugal. Find the lowest fares. Are you searching for American Airlines flights from Washington, D.C. to Lisbon? Find the best selections and fly in style. Great Circle Map displays the shortest route between airports and calculates the distance. It draws geodesic flight paths on top of Google maps, so you can create your own route map.Cheap KLM flights from USA to Lisbon. Have a look at some of the cheapest available KLM flights departing from USA and landing in Lisbon. Make sure to examine the flight information before completing your reservation. Mon 5/6 1:00 pm ORD - LIS. 1 stop 15h 45m KLM. Mon 5/13 7:30 pm LIS - ORD. 1 stop 24h 50m KLM.Washington D.C. Compare Lisbon to Washington D.C. flight deals. Find the cheapest month or even day of the year to fly to Washington D.C. Book the best … Washington DC, DC is 3,567 miles from Lisbon. There are 1 weekly flights from Washington DC, DC to Lisbon. TAP Air Portugal has the most nonstop flights between Washington DC, DC and Lisbon. Frankfurt, Germany - Frankfurt International Airport is the most popular connection for one stop flights between Washington DC, DC and Lisbon. Search and compare business class flight deals to Lisbon. Fly from Newark from $2,243, from New York from $2,243, from Washington, D.C. from $2,459. Book your business class tickets to Lisbon.Welcome to the 180 Degrees Consulting Católica-Lisbon branch, the only one present in Portugal! We are located close to the center of Lisbon, a young and dynamic city. Our branch was founded in 2016 by students at Católica Lisbon School of Business and Economics who aim to bring the vision, ideas, goals, and values of 180 DC to life in …Ryanair, easyJet and three other airlines fly from Lourdes to Lisbon every 4 hours. Alternatively, you can take a train from Lourdes to Lisbon Oriente via Toulouse-Matabiau, Narbonne, Estación de tren de Atocha, Badajoz, and Entroncamento in around 20h 37m. Airlines. Ryanair. easyJet. The cheapest return flight ticket from Washington Dulles Airport to Lisbon found by KAYAK users in the last 72 hours was for $382 on PLAY, followed by Royal Air Maroc ($558). One-way flight deals have also been found from as low as $343 on PLAY and from $358 on Royal Air Maroc. Spectacularly situated where the Tagus river meets the Atlantic coast, Lisbon is one of the world’s most beautiful cities. Built on the remains of an old volcanic field, its old town is made up of seven hills, which create its characteristically steep streets, equipped with cable cars and lifts to facilitate movement throughout the city.Take one of our cheap flights to … Mon, Dec 2 LIS – IAD with Fly Play. 1 stop. from $423. Lisbon.$480 per passenger.Departing Sun, Apr 28, returning Mon, May 13.Round-trip flight with Fly Play.Outbound indirect flight with Fly Play, departing from Washington Dulles on Sun, Apr 28, arriving in Lisbon.Inbound indirect flight with Fly Play, departing from Lisbon on Mon, May 13 ... Washington DC Time to Lisbon Time Converter. Washington DC is a city of United States. Current timezone is EDT (Eastern Daylight Time,Eastern Daylight Time) (in use) Lisbon is a city of Portugal. Current timezone is WEST (Western European Summer Time,Western European Summer Time) (in use) Washington DC Time = UTC - 4:00. …Cheap KLM flights from USA to Lisbon. Have a look at some of the cheapest available KLM flights departing from USA and landing in Lisbon. Make sure to examine the flight information before completing your reservation. Mon 5/6 1:00 pm ORD - LIS. 1 stop 15h 45m KLM. Mon 5/13 7:30 pm LIS - ORD. 1 stop 24h 50m KLM.Sun, Apr 21 BWI – LIS with Fly Play. 1 stop. Fri, Apr 26 LIS – BWI with Fly Play. 1 stop. from $344. Lisbon.$357 per passenger.Departing Sun, Apr 28, returning Fri, May 3.Round-trip flight with Fly Play.Outbound indirect flight with Fly Play, departing from Baltimore Washington International on Sun, Apr 28, arriving in Lisbon.Inbound ... Explore Air Canada flights from Washington, D.C. to Portugal from USD 1,115* Dec 20, 2019 · Airfares from $289 One Way, $299 Round Trip from Washington to Lisbon District. Prices starting at $299 for return flights and $289 for one-way flights to Lisbon District were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply. Thu, Jan 23 - Fri, Jan 31. Ryanair, easyJet and three other airlines fly from Lourdes to Lisbon every 4 hours. Alternatively, you can take a train from Lourdes to Lisbon Oriente via Toulouse-Matabiau, Narbonne, Estación de tren de Atocha, Badajoz, and Entroncamento in around 20h 37m. Airlines. Ryanair. easyJet.Travel to Lisbon. PLAY flies to Lisbon Airport (LIS) - Main Terminal 1. The airport is 7 km from the city center and is serviced by a metro line, trains, car rentals, taxis and bus routes. Further information can be found on Lisbon Airport's website. Washington. LIS. Lisbon. $704. Roundtrip. found 5 days ago. Book one-way or return flights from Washington to Lisbon with no change fee on selected flights. Earn your airline miles on top of our rewards! Get great 2024 flight deals from Washington to Lisbon now! TAP Air Portugal 234. TAP234. / TP234. Expected to depart in 7 hours 56 minutes. IAD Washington, DC. LIS Lisbon, Portugal. takes off from Washington Dulles Intl - IAD. arriving at Terminal 1 General Humberto Delgado Airport - LIS. … Flying time from Washington, DC to Lisbon, Portugal. The total flight duration from Washington, DC to Lisbon, Portugal is 7 hours, 39 minutes. This assumes an average flight speed for a commercial airliner of 500 mph, which is equivalent to 805 km/h or 434 knots. It also adds an extra 30 minutes for take-off and landing. Lisbon Time to Washington DC Time Converter. Lisbon is a city of Portugal. Current timezone is WEST (Western European Summer Time,Western European Summer Time) (in use) Washington DC is a city of United States. Current timezone is EDT (Eastern Daylight Time,Eastern Daylight Time) (in use) Lisbon Time = UTC + 1:00. 06:43:20.Cloudflare's new Lisbon office. 07/16/2019. John Graham-Cumming. 2 min read. I was the 24th employee of Cloudflare and the first outside of San Francisco. Working out of my spare bedroom, I wrote a chunk of Cloudflare’s software before starting to recruit a team in London. Today, Cloudflare London, our EMEA headquarters, has more than 200 ...Indices Difference. Consumer Prices in Washington, DC are 68.4% higher than in Lisbon (without rent) Consumer Prices Including Rent in Washington, DC are 80.6% higher than in Lisbon. Rent Prices in Washington, DC are 99.9% higher than in Lisbon. Restaurant Prices in Washington, DC are 79.4% higher than in Lisbon.Our flight to Lisbon left at least 30 minutes late (bad DC weather) but we arrived on time in Lisbon to get to our "tight" connection (1hr 20 min) to catch the BCN flight. The Lisbon airport is small, so it was easy to hustle over to new gate with minimal headache and our bags checked through to our destination.Most people fly into Lisbon Humberto Delgado (LIS) if they book a flight to Lisbon from Washington, D.C. Dulles Intl. On average, Humberto Delgado has 1 inbound flight from Washington, D.C. Dulles Intl per day from 16 airlines. Lisbon Humberto Delgado is conveniently located just 4.2 mi from Lisbon’s city center.Meeting planner for Washington, District of Columbia and Lisbon, Portugal. To schedule a conference call or plan a meeting at the best time for both parties, you should try between 9:00 AM and 12:00 PM your time in Washington, DC. That will end up being between 2:00 PM and 5:00 PM in Lisbon, Portugal. The chart below shows overlapping …This time zone converter lets you visually and very quickly convert Lisbon, Portugal time to EST and vice-versa. Simply mouse over the colored hour-tiles and glance at the hours selected by the column... and done! EST is known as Eastern Standard Time. EST is 5 hours behind Lisbon, Portugal time. So, when it is it will be.Help. Find cheap flights to Morocco with Google Flights. Explore popular destinations in Morocco and book your flight.
Now, thanks to Azores Airlines’ stopover program, you can add a stopover of up to 7 days in the Azores while flying between North America and Europe. This program is a fantastic opportunity to explore the Azores, particularly the islands of São Miguel and Terceira, and immerse yourself in their enchanting beauty. Contents.. Azarlive
The two airlines most popular with KAYAK users for flights from Chicago to Lisbon are Delta and KLM. With an average price for the route of $748 and an overall rating of 8.0, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $797 and an overall rating of 7.8.The total flight duration from Washington, DC to Portugal is 7 hours, 43 minutes. This assumes an average flight speed for a commercial airliner of 500 mph, which is equivalent to 805 km/h or 434 knots. It also adds an extra 30 minutes for take-off and landing. Your exact time may vary depending on wind speeds.Welcome to the 180 Degrees Consulting Católica-Lisbon branch, the only one present in Portugal! We are located close to the center of Lisbon, a young and dynamic city. Our branch was founded in 2016 by students at Católica Lisbon School of Business and Economics who aim to bring the vision, ideas, goals, and values of 180 DC to life in …Meeting planner for Washington, District of Columbia and Lisbon, Portugal. To schedule a conference call or plan a meeting at the best time for both parties, you should try between 9:00 AM and 12:00 PM your time in Washington, DC. That will end up being between 2:00 PM and 5:00 PM in Lisbon, Portugal. The chart below shows overlapping … Lisbon (LIS) 06/04/24 - 06/11/24. from. $1,030* Updated: 11 hours ago. Round trip. I. Economy. See Latest Fare. keyboard_arrow_right *Fares displayed have been ... Flying time from Washington, DC to Lisbon, Portugal. The total flight duration from Washington, DC to Lisbon, Portugal is 7 hours, 39 minutes. This assumes an average flight speed for a commercial airliner of 500 mph, which is equivalent to 805 km/h or 434 knots. It also adds an extra 30 minutes for take-off and landing. LIS. 2240 / 1050 +1. Mon, Wed, Thurs, Sat, Sun. The nonstop route will operate five times weekly, initially aboard Airbus A330-200 aircraft, before moving to A330-900neo service, for which TAP Air Portugal became the new variant’s launch carrier late last year. The aircraft features a two-class, 298-passenger configuration, including 34 fully ...Best site for finding today’s lowest flight prices, unadvertised fare sales, and mistake prices. Updated daily. Find the best price before you book your trip to Lisbon, Portugal (LIS).Enter flight information. Continue. See all TAP flight arrivals and departures. You can search by flight number, airport or destination and get complete information about the flight.However, the airline will increase this frequency to two flights per day. The first flight, TP-0231, departs Lisbon at 15:05 local time and arrives in DC at 18:25. The second flight, TP-0233, departs Lisbon at 17:25 local time and arrives in Portugal at 20:45. The return flights from Washington DC to Lisbon operate under TP-0232 and TP-0234.Flights to Portugal. Flights from Washington, D.C. to Lisbon. Check out various flight deals from Washington, D.C. to Lisbon with Royal Air Maroc. Get the best prices and enjoy a unique flight experience.Are you searching for American Airlines flights from Washington, D.C. to Lisbon? Find the best selections and fly in style..