Cheap flights from Washington, D.C. Dulles Intl Airport to Lisbon from £409
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — LIS
9 Oct — 16 Oct1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Lisbon Humberto Delgado are usually found in January or February, booked 71 days in advance, depart on a Thursday or Tuesday and return on a Monday
Cheap flight deals from Dulles Intl to Lisbon
Enter your travel dates to find the best prices.
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Best
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Cheapest flights from Dulles Intl to Lisbon
Explore the most affordable flight options available from Dulles Intl to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 September 2026.
Sun 1/1122:15 -
Nonstop6h 50m
Thu 12/1105:00 -
1 stop15h 55m
Deal found 9/9£552
Mon 30/1122:30 -
Nonstop6h 50m
Wed 23/1205:00 -
1 stop20h 05m
Deal found 6/9£553
Mon 26/1023:30 -
Nonstop6h 50m
Mon 2/1115:35 -
1 stop30h 25m
Deal found 6/9£555
Mon 30/1109:55 -
1 stop19h 45m
Tue 22/1205:00 -
1 stop15h 55m
Deal found 6/9£556
Sun 25/1012:36 -
1 stop15h 34m
Wed 4/1105:00 -
1 stop15h 55m
Deal found 7/9£556
Mon 26/1009:55 -
1 stop20h 45m
Tue 3/1106:05 -
1 stop19h 00m
Deal found 8/9£557
Wed 14/1021:45 -
1 stop15h 05m
Thu 26/1105:00 -
1 stop15h 45m
Deal found 9/9£558
Tue 8/1208:15 -
1 stop18h 55m
Tue 15/1212:50 -
2 stops32h 14m
Deal found 6/9£559
Wed 2/1206:00 -
2 stops19h 55m
Tue 22/1205:00 -
1 stop14h 35m
Deal found 6/9£559
Sun 1/1120:10 -
1 stop13h 25m
Fri 13/1105:00 -
1 stop15h 55m
Deal found 7/9£560
Tue 1/1211:30 -
2 stops18h 55m
Tue 22/1205:00 -
1 stop15h 45m
Deal found 6/9£561
Mon 30/1111:25 -
2 stops15h 35m
Tue 22/1211:30 -
1 stop33h 25m
Deal found 6/9£562
Best flights from Dulles Intl to Lisbon
Discover carefully curated flight deals from Dulles Intl to Lisbon that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 September 2026.
Wed 14/1013:15 -
1 stop29h 30m
Thu 29/1011:35 -
1 stop29h 10m
Deal found 5/9£580
Wed 28/1015:03 -
2 stops16h 17m
Sun 1/1105:00 -
1 stop15h 45m
Deal found 9/9£620
Thu 29/1023:30 -
Nonstop6h 50m
Sat 7/1105:00 -
1 stop15h 55m
Deal found 7/9£627
Tue 15/1212:35 -
1 stop14h 25m
Mon 11/105:00 -
2 stops16h 30m
Deal found 8/9£728
Fri 12/219:40 -
2 stops13h 20m
Sat 20/207:10 -
2 stops16h 20m
Deal found 9/9£1,033
Tue 6/1017:05 -
Nonstop7h 25m
Sat 10/1011:40 -
Nonstop8h 30m
Deal found 8/9£1,046
Sat 5/1222:30 -
Nonstop6h 50m
Sat 19/1212:20 -
Nonstop8h 20m
Deal found 5/9£636
Sun 15/1113:30 -
1 stop16h 05m
Thu 19/1106:00 -
1 stop18h 25m
Deal found 6/9£791
Fri 16/1017:13 -
2 stops16h 42m
Mon 19/1009:50 -
2 stops18h 26m
Deal found 6/9£796
Thu 19/1122:30 -
Nonstop6h 50m
Sun 22/1112:20 -
Nonstop8h 20m
Deal found 9/9£776
Thu 19/1122:30 -
Nonstop6h 50m
Mon 23/1111:55 -
Nonstop8h 20m
Deal found 9/9£776
Sat 5/1213:30 -
1 stop20h 40m
Sun 3/106:00 -
1 stop18h 25m
Deal found 9/9£1,060
Direct flights from Dulles Intl to Lisbon
Explore direct flight options from Dulles Intl to Lisbon based on user searches, and compare prices and availability for your desired travel dates. Data last updated 9 September 2026.
Sun 29/1122:15 -
Nonstop6h 50m
Wed 23/1211:55 -
Nonstop8h 20m
Deal found 6/9£562
Mon 22/222:30 -
Nonstop6h 50m
Tue 2/312:20 -
Nonstop8h 20m
Deal found 7/9£566
Wed 4/1122:30 -
Nonstop6h 50m
Tue 10/1112:20 -
Nonstop8h 20m
Deal found 7/9£584
Fri 4/1222:30 -
Nonstop6h 50m
Thu 24/1212:20 -
Nonstop8h 20m
Deal found 6/9£599
Sun 21/222:15 -
Nonstop6h 50m
Sun 28/212:20 -
Nonstop8h 20m
Deal found 6/9£603
Wed 18/1122:30 -
Nonstop6h 50m
Tue 1/1212:20 -
Nonstop8h 20m
Deal found 7/9£621
Mon 22/222:30 -
Nonstop6h 50m
Sun 28/212:20 -
Nonstop8h 20m
Deal found 7/9£625
Sat 5/1222:30 -
Nonstop6h 50m
Sun 20/1212:20 -
Nonstop8h 20m
Deal found 6/9£636
Sat 20/222:30 -
Nonstop6h 50m
Sat 27/212:20 -
Nonstop8h 20m
Deal found 7/9£640
Wed 25/1122:30 -
Nonstop6h 50m
Tue 1/1212:20 -
Nonstop8h 20m
Deal found 6/9£644
Mon 22/222:30 -
Nonstop6h 50m
Thu 4/312:20 -
Nonstop8h 20m
Deal found 7/9£658
Fri 26/222:30 -
Nonstop6h 50m
Sun 28/212:20 -
Nonstop8h 20m
Deal found 7/9£662
Last-minute flights from Dulles Intl to Lisbon
Discover last-minute flight deals from Dulles Intl to Lisbon. Data last updated 9 September 2026 and is based on user searches.
Mon 12/1022:19 -
1 stop31h 46m
Thu 26/1105:00 -
1 stop20h 05m
Deal found 9/9£559
Mon 12/1022:40 -
1 stop28h 40m
Wed 25/1111:20 -
2 stops29h 28m
Deal found 9/9£563
Tue 13/1015:45 -
1 stop12h 35m
Tue 24/1105:00 -
1 stop14h 35m
Deal found 9/9£556
Wed 14/1021:45 -
1 stop15h 05m
Mon 23/1111:30 -
1 stop33h 15m
Deal found 9/9£558
Wed 14/1013:10 -
2 stops16h 55m
Tue 24/1105:00 -
1 stop14h 35m
Deal found 9/9£562
Sun 25/1023:15 -
Nonstop6h 50m
Wed 4/1105:00 -
1 stop15h 55m
Deal found 7/9£553
Mon 26/1023:30 -
Nonstop6h 50m
Mon 2/1115:35 -
1 stop30h 25m
Deal found 6/9£555
Mon 26/1009:55 -
1 stop20h 45m
Tue 3/1106:05 -
1 stop19h 00m
Deal found 8/9£557
Tue 27/1021:10 -
1 stop13h 25m
Mon 2/1115:35 -
1 stop30h 25m
Deal found 8/9£562
Wed 28/1015:03 -
2 stops16h 17m
Wed 4/1105:00 -
1 stop15h 55m
Deal found 6/9£561
Wed 28/1009:55 -
1 stop17h 00m
Wed 4/1111:55 -
Nonstop8h 20m
Deal found 6/9£565
One-way flights from Dulles Intl to Lisbon
Search for one-way flight options from Dulles Intl to Lisbon. Find affordable one-way fares based on user searches. Data last updated 9 September 2026.
Mon 9/1119:40 -
1 stop12h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 6/9£409
Sun 14/219:40 -
1 stop34h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 8/9£410
Tue 24/1112:35 -
1 stop14h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 9/9£413
Tue 9/217:00 -
2 stops19h 30m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 8/9£416
Sat 31/1018:50 -
2 stops48h 20m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 9/9£438
Sat 7/1117:50 -
2 stops44h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 9/9£444
Thu 22/1012:30 -
2 stops17h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 8/9£453
Sat 31/1018:31 -
2 stops16h 09m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 6/9£456
Fri 2/1018:26 -
2 stops15h 49m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 7/9£460
Mon 21/918:26 -
2 stops31h 24m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 7/9£466
Sun 8/1118:05 -
1 stop13h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 6/9£496
Find flight deals from Dulles Intl to Lisbon
Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Lisbon (LIS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 9 September 2026.
Customise your flight search to find flights from Dulles Intl to Lisbon that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated 9 September 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Lisbon that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest return flight
Washington, D.C.Lisbon
IAD Washington, D.C. Dulles Intl - LIS Lisbon Humberto Delgado
IADLIS
Washington, D.C. Dulles Intl
Mon 9/11
19:40-12:50
1 stop12h 10m
Lisbon Humberto Delgado
Wed 31/12
00:00-18:00
Nonstop0h 00m
£410
Washington, D.C.Lisbon
IAD Washington, D.C. Dulles Intl - LIS Lisbon Humberto Delgado
IADLIS
Washington, D.C. Dulles Intl
Thu 22/10
12:30-11:15
2 stops17h 45m
Lisbon Humberto Delgado
Wed 31/12
00:00-18:00
Nonstop0h 00m
£453
Washington, D.C.Lisbon
IAD Washington, D.C. Dulles Intl - LIS Lisbon Humberto Delgado
IADLIS
Washington, D.C. Dulles Intl
Sat 31/10
18:12-15:10
2 stops16h 58m
Lisbon Humberto Delgado
Wed 31/12
00:00-18:00
Nonstop0h 00m
£453
Washington, D.C.Lisbon
IAD Washington, D.C. Dulles Intl - LIS Lisbon Humberto Delgado
IADLIS
Washington, D.C. Dulles Intl
Tue 29/9
18:26-15:15
2 stops15h 49m
Lisbon Humberto Delgado
Wed 31/12
00:00-18:00
Nonstop0h 00m
£460
Washington, D.C.Lisbon
IAD Washington, D.C. Dulles Intl - LIS Lisbon Humberto Delgado
IADLIS
Washington, D.C. Dulles Intl
Mon 21/9
18:26-06:50
2 stops31h 24m
Lisbon Humberto Delgado
Wed 31/12
00:00-18:00
Nonstop0h 00m
£466
Washington, D.C.Lisbon
IAD Washington, D.C. Dulles Intl - LIS Lisbon Humberto Delgado
IADLIS
Washington, D.C. Dulles Intl
Sun 8/11
18:05-12:05
1 stop13h 00m
Lisbon Humberto Delgado
Wed 31/12
00:00-18:00
Nonstop0h 00m
£496
Washington, D.C.Lisbon
IAD Washington, D.C. Dulles Intl - LIS Lisbon Humberto Delgado
IADLIS
Washington, D.C. Dulles Intl
Thu 5/11
17:25-05:35
Nonstop7h 10m
Lisbon Humberto Delgado
Wed 31/12
00:00-18:00
Nonstop0h 00m
£524
Washington, D.C.Lisbon
IAD Washington, D.C. Dulles Intl - LIS Lisbon Humberto Delgado
IADLIS
Washington, D.C. Dulles Intl
Fri 6/11
21:45-17:55
1 stop15h 10m
Lisbon Humberto Delgado
Wed 31/12
00:00-18:00
Nonstop0h 00m
£533
Fastest return journey
Washington, D.C.Lisbon
IAD Washington, D.C. Dulles Intl - LIS Lisbon Humberto Delgado
IADLIS
Washington, D.C. Dulles Intl
Thu 29/10
23:30-10:20
Nonstop6h 50m
Lisbon Humberto Delgado
Wed 31/12
00:00-18:00
Nonstop0h 00m
£534
Washington, D.C.Lisbon
IAD Washington, D.C. Dulles Intl - LIS Lisbon Humberto Delgado
IADLIS
Washington, D.C. Dulles Intl
Sat 7/11
22:30-10:20
Nonstop6h 50m
Lisbon Humberto Delgado
Wed 31/12
00:00-18:00
Nonstop0h 00m
£534
Flights are sorted by cheapest return flights first.
Deals found on 9/9
Showing 1-10 of 23 resultsSorted by cheapest first
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2
3
Best time to book a flight from Dulles Intl to Lisbon
Have a flexible travel schedule? Discover the best time to fly to Lisbon from Dulles Intl with our price prediction graph.
IAD-LIS
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Lisbon
Prices
Airlines
Delays
How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Lisbon?
The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Lisbon may vary depending on when you book. For the best chance of a lower fare, look to book 70 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Lisbon?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Lisbon (average of £491). Flying from Washington, D.C. Dulles Intl Airport to Lisbon in June is currently the most expensive (average of £1,055). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from IAD to LIS?
Find hourly flight availability from Dulles Intl to Lisbon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 9 September 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Dulles Intl Airport to Lisbon as you normally would.
How much does it cost for a return flight from Washington, D.C. Dulles Intl Airport to Lisbon?
Airfare is below average for this route at the moment.
Washington, D.C. Dulles Intl Airport to Lisbon flights typically cost between £632 and £887 in February.The cheapest return price found within the last 5 days was £487 on Icelandair (7 Feb–14 Feb).
Weekly flight availability from Washington, D.C. Dulles Intl Airport to Lisbon
Explore weekly flight availability from Dulles Intl to Lisbon. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 9 September 2026.
The most flights from IAD to LIS are scheduled on a Monday (7 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).
How often are flights from Washington, D.C. to Lisbon delayed?
About 23% of weekly flights between Washington, D.C. and Lisbon have experienced delays in the past year, with the average delay time being 144 minutes.
What is the most punctual flight time for Washington, D.C. to Lisbon flights?
Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Washington, D.C. to Lisbon flights?
Over the past year, TAP AIR PORTUGAL have had the lowest number of delays on this route, with just 19% of flights being delayed.
Related info for your journey
Find useful and relevant information for your journey from Dulles Intl to Lisbon. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
What airport do you fly into for flights to Lisbon from Washington, D.C. Dulles Intl?
For a flight from Washington, D.C. Dulles Intl to Lisbon, you will be flying into Humberto Delgado. Lisbon Humberto Delgado (LIS) is just 4.2 mi from the center of the city. Humberto Delgado is the only Lisbon airport and it handles 5 inbound flights from Washington, D.C. Dulles Intl per day. 0 airlines have flights to Lisbon Humberto Delgado from Washington, D.C. Dulles Intl on a regular basis.
How long is the flight from Washington, D.C. Dulles Intl Airport to Lisbon?
Departing from Washington, D.C. Dulles Intl Airport to Lisbon will take you 6h 50m. Washington, D.C. Dulles Intl Airport and Lisbon are separated by a distance of 3580 mi. This flight may include one or multiple stops.
What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Lisbon?
No one likes to see their flight delayed. When booking a flight from Washington, D.C. Dulles Intl Airport to Lisbon consider choosing JetBlue (77%), TAP AIR PORTUGAL (77%) or airBaltic (71%) as they are the most reliable in getting you off to your destination on time.
Can I find deals for flights from Dulles Intl to Lisbon that include hotel bookings?
Yes. In addition to deals on Dulles Intl to Lisbon flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Dulles Intl to Lisbon?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Lisbon.
Can I find deals for business class flights from Dulles Intl to Lisbon?
Yes. Cheapflights offers flight deals from Dulles Intl to Lisbon by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Lisbon?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Lisbon (average of £491). Flying from Washington, D.C. Dulles Intl Airport to Lisbon in June is currently the most expensive (average of £1,055). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Explore flights to Lisbon departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 9 September 2026.
Browse through other flights departing from Dulles Intl. Flights are based on user searches made on Cheapflights and were last updated on 9 September 2026.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Dulles Intl to Lisbon?
When you search for this flight from Dulles Intl to Lisbon, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Why should you use Cheapflights to find cheap flight tickets from Dulles Intl to Lisbon?
By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Lisbon from Dulles Intl.
Can Cheapflights find flights from Dulles Intl to Lisbon with no change fees?
Yes! Cheapflights helps users easily find flights from Dulles Intl to Lisbon with no change fees.
Can Cheapflights notify me if prices for flights from Dulles Intl to Lisbon become cheaper?
Yes, Cheapflights offers price alerts on Dulles Intl to Lisbon flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.
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