Cheap flights from Washington, D.C. Dulles Intl Airport to Lisbon from £414
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 24/11. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — LIS
15 Oct — 22 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 Wednesday or Tuesday and return on a Monday
Cheap flight deals from Dulles Intl to Lisbon
Enter your travel dates to find the best prices.
Cheapest
Best
Direct
Last-minute
One-way
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 15 September 2026.
Mon 9/1119:40 -
1 stop12h 10m
Sun 22/1114:00 -
1 stop33h 30m
Deal found 11/9£550
Sun 8/1122:15 -
Nonstop6h 50m
Wed 18/1112:35 -
1 stop33h 25m
Deal found 15/9£555
Tue 10/1122:15 -
Nonstop6h 50m
Thu 19/1105:00 -
1 stop15h 55m
Deal found 11/9£556
Wed 4/1122:30 -
Nonstop6h 50m
Tue 10/1115:35 -
1 stop30h 25m
Deal found 11/9£557
Wed 18/1109:55 -
1 stop16h 00m
Thu 26/1105:00 -
1 stop20h 05m
Deal found 11/9£558
Tue 10/1117:50 -
1 stop9h 20m
Thu 26/1105:00 -
1 stop15h 55m
Deal found 11/9£559
Tue 20/1009:45 -
1 stop18h 35m
Tue 3/1106:05 -
1 stop19h 00m
Deal found 10/9£559
Mon 9/1112:35 -
1 stop14h 25m
Wed 25/1105:00 -
1 stop15h 55m
Deal found 11/9£560
Sun 8/1122:47 -
2 stops30h 53m
Wed 18/1105:00 -
1 stop20h 05m
Deal found 15/9£561
Sat 24/1022:19 -
1 stop31h 01m
Thu 5/1105:00 -
1 stop15h 55m
Deal found 10/9£562
Tue 10/1117:16 -
2 stops16h 54m
Wed 18/1105:00 -
1 stop15h 55m
Deal found 10/9£563
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 15 September 2026.
Tue 3/1117:13 -
2 stops16h 57m
Thu 12/1105:00 -
1 stop15h 45m
Deal found 12/9£563
Wed 4/1113:19 -
1 stop12h 36m
Wed 11/1111:55 -
Nonstop8h 20m
Deal found 14/9£567
Wed 25/1119:40 -
1 stop12h 10m
Sun 29/1114:00 -
1 stop33h 30m
Deal found 14/9£688
Sat 7/1122:35 -
1 stop28h 35m
Mon 16/1112:25 -
1 stop32h 30m
Deal found 12/9£582
Wed 2/1222:30 -
Nonstop6h 50m
Tue 8/1212:20 -
Nonstop8h 20m
Deal found 14/9£587
Thu 12/1122:30 -
Nonstop6h 50m
Thu 26/1112:20 -
Nonstop8h 20m
Deal found 11/9£602
Mon 19/1022:25 -
Nonstop7h 05m
Wed 28/1005:00 -
1 stop15h 55m
Deal found 14/9£616
Sat 14/1122:35 -
1 stop28h 35m
Sat 21/1112:25 -
1 stop32h 30m
Deal found 11/9£619
Wed 21/1008:15 -
2 stops21h 50m
Sun 25/1005:00 -
1 stop15h 55m
Deal found 13/9£688
Mon 12/1022:25 -
Nonstop7h 05m
Mon 19/1005:05 -
1 stop16h 00m
Deal found 14/9£719
Fri 16/1017:55 -
1 stop23h 00m
Sun 25/1005:00 -
2 stops34h 23m
Deal found 14/9£724
Fri 9/1022:25 -
Nonstop7h 05m
Wed 14/1006:45 -
1 stop14h 20m
Deal found 11/9£742
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 15 September 2026.
Wed 25/1122:30 -
Nonstop6h 50m
Thu 3/1212:20 -
Nonstop8h 20m
Deal found 15/9£565
Wed 2/1222:30 -
Nonstop6h 50m
Tue 8/1212:20 -
Nonstop8h 20m
Deal found 14/9£587
Sun 1/1122:15 -
Nonstop6h 50m
Sat 21/1112:20 -
Nonstop8h 20m
Deal found 11/9£602
Fri 4/1222:30 -
Nonstop6h 50m
Tue 8/1212:20 -
Nonstop8h 20m
Deal found 11/9£624
Thu 11/317:25 -
Nonstop7h 10m
Wed 17/316:40 -
Nonstop8h 50m
Deal found 11/9£634
Thu 5/1122:30 -
Nonstop6h 50m
Mon 16/1111:55 -
Nonstop8h 20m
Deal found 11/9£639
Sat 20/222:30 -
Nonstop6h 50m
Sat 27/212:20 -
Nonstop8h 20m
Deal found 11/9£642
Wed 21/1022:25 -
Nonstop7h 05m
Tue 27/1012:20 -
Nonstop8h 20m
Deal found 11/9£646
Fri 4/1222:30 -
Nonstop6h 50m
Mon 7/1211:55 -
Nonstop8h 20m
Deal found 10/9£661
Tue 13/1022:25 -
Nonstop7h 05m
Sun 25/1012:20 -
Nonstop8h 20m
Deal found 15/9£667
Mon 23/1122:30 -
Nonstop6h 50m
Mon 30/1111:55 -
Nonstop8h 20m
Deal found 14/9£668
Last-minute flights from Dulles Intl to Lisbon
Discover last-minute flight deals from Dulles Intl to Lisbon. Data last updated 15 September 2026 and is based on user searches.
Tue 20/1022:25 -
Nonstop7h 05m
Tue 3/1106:05 -
1 stop19h 00m
Deal found 10/9£557
Tue 20/1015:45 -
1 stop12h 35m
Wed 4/1105:00 -
1 stop15h 55m
Deal found 10/9£558
Tue 20/1022:25 -
Nonstop7h 05m
Fri 6/1112:20 -
Nonstop8h 20m
Deal found 10/9£565
Sat 24/1022:19 -
1 stop31h 01m
Fri 6/1105:00 -
1 stop14h 35m
Deal found 10/9£562
Sat 24/1022:19 -
1 stop31h 01m
Tue 3/1106:05 -
1 stop19h 00m
Deal found 10/9£563
Sun 25/1023:15 -
Nonstop6h 50m
Wed 4/1105:00 -
1 stop15h 55m
Deal found 11/9£556
Sun 25/1017:53 -
1 stop10h 17m
Tue 3/1106:05 -
1 stop19h 00m
Deal found 10/9£560
Tue 27/1012:27 -
2 stops16h 33m
Tue 3/1111:15 -
2 stops17h 01m
Deal found 12/9£579
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 15 September 2026.
Tue 24/1112:35 -
1 stop14h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 13/9£414
Wed 30/1210:43 -
2 stops17h 17m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 14/9£415
Mon 4/118:30 -
2 stops15h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 14/9£417
Tue 10/1115:00 -
2 stops19h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 15/9£418
Mon 28/1217:29 -
2 stops16h 11m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 14/9£421
Sat 31/1018:50 -
2 stops48h 20m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 11/9£440
Thu 24/1206:00 -
2 stops21h 55m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 10/9£451
Fri 23/1006:00 -
2 stops21h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 14/9£452
Thu 22/1012:30 -
2 stops17h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 10/9£455
Fri 25/1216:25 -
2 stops17h 15m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 10/9£458
Mon 21/912:25 -
2 stops25h 50m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 11/9£462
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 15 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 15 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
Sat 31/10
18:50-23:10
2 stops48h 20m
Lisbon Humberto Delgado
Wed 31/12
00:00-18:00
Nonstop0h 00m
£440
Washington, D.C.Lisbon
IAD Washington, D.C. Dulles Intl - LIS Lisbon Humberto Delgado
IADLIS
Washington, D.C. Dulles Intl
Fri 25/12
16:25-14:40
2 stops17h 15m
Lisbon Humberto Delgado
Wed 31/12
00:00-18:00
Nonstop0h 00m
£458
Washington, D.C.Lisbon
IAD Washington, D.C. Dulles Intl - LIS Lisbon Humberto Delgado
IADLIS
Washington, D.C. Dulles Intl
Tue 29/9
18:26-19:15
2 stops19h 49m
Lisbon Humberto Delgado
Wed 31/12
00:00-18:00
Nonstop0h 00m
£462
Fastest return journey
Washington, D.C.Lisbon
IAD Washington, D.C. Dulles Intl - LIS Lisbon Humberto Delgado
IADLIS
Washington, D.C. Dulles Intl
Tue 10/11
22:15-10:05
Nonstop6h 50m
Lisbon Humberto Delgado
Wed 31/12
00:00-18:00
Nonstop0h 00m
£499
Washington, D.C.Lisbon
IAD Washington, D.C. Dulles Intl - LIS Lisbon Humberto Delgado
IADLIS
Washington, D.C. Dulles Intl
Sun 27/12
22:15-10:05
Nonstop6h 50m
Lisbon Humberto Delgado
Wed 31/12
00:00-18:00
Nonstop0h 00m
£499
Washington, D.C.Lisbon
IAD Washington, D.C. Dulles Intl - LIS Lisbon Humberto Delgado
IADLIS
Washington, D.C. Dulles Intl
Fri 2/10
12:25-15:15
2 stops21h 50m
Lisbon Humberto Delgado
Wed 31/12
00:00-18:00
Nonstop0h 00m
£499
Washington, D.C.Lisbon
IAD Washington, D.C. Dulles Intl - LIS Lisbon Humberto Delgado
IADLIS
Washington, D.C. Dulles Intl
Tue 6/10
17:05-05:30
Nonstop7h 25m
Lisbon Humberto Delgado
Wed 31/12
00:00-18:00
Nonstop0h 00m
£511
Washington, D.C.Lisbon
IAD Washington, D.C. Dulles Intl - LIS Lisbon Humberto Delgado
IADLIS
Washington, D.C. Dulles Intl
Fri 1/1
22:30-10:40
Nonstop7h 10m
Lisbon Humberto Delgado
Wed 31/12
00:00-18:00
Nonstop0h 00m
£526
Washington, D.C.Lisbon
IAD Washington, D.C. Dulles Intl - LIS Lisbon Humberto Delgado
IADLIS
Washington, D.C. Dulles Intl
Sat 10/10
17:05-05:30
Nonstop7h 25m
Lisbon Humberto Delgado
Wed 31/12
00:00-18:00
Nonstop0h 00m
£526
Washington, D.C.Lisbon
IAD Washington, D.C. Dulles Intl - LIS Lisbon Humberto Delgado
IADLIS
Washington, D.C. Dulles Intl
Tue 22/12
16:25-19:15
2 stops21h 50m
Lisbon Humberto Delgado
Wed 31/12
00:00-18:00
Nonstop0h 00m
£532
Flights are sorted by cheapest return flights first.
Deals found on 12/9
Showing 1-10 of 22 resultsSorted by cheapest first
1
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
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 £493). Flying from Washington, D.C. Dulles Intl Airport to Lisbon in June is currently the most expensive (average of £1,057). 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 15 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 £643 and £904 in February.The cheapest return price found within the last 5 days was £487 on Icelandair (6 Feb–14 Feb).
How often are flights from Washington, D.C. to Lisbon delayed?
About 22% of weekly flights between Washington, D.C. and Lisbon have experienced delays in the past year, with the average delay time being 148 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 18% 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 4 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 13h 10m. Washington, D.C. Dulles Intl Airport and Lisbon are separated by a distance of 3580 mi.
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 £493). Flying from Washington, D.C. Dulles Intl Airport to Lisbon in June is currently the most expensive (average of £1,057). 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 15 September 2026.
Browse through other flights departing from Dulles Intl. Flights are based on user searches made on Cheapflights and were last updated on 15 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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