
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $884 (Mytrip) |
One-way from | $375 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $1,105 |
Good round-trip deal | $847 or less |
Good one-way deal | $525 or less |
Fly from
Fly to
Route
Depart
Return
Washington, D.C.Lisbon
IAD - LIS
IADLIS
Washington, D.C. Dulles Intl
Wed 7/1
10:25 pm-10:30 am
Nonstop7h 05m
Lisbon Humberto Delgado
Thu 7/9
6:15 am-7:25 pm
1 stop18h 10m
Washington, D.C.Lisbon
IAD - LIS
IADLIS
Washington, D.C. Dulles Intl
Mon 5/11
10:35 pm-10:55 am
Nonstop7h 20m
Lisbon Humberto Delgado
Wed 5/20
11:40 am-3:05 pm
Nonstop8h 25m
Washington, D.C.Lisbon
IAD - LIS
IADLIS
Washington, D.C. Dulles Intl
Mon 7/6
9:45 pm-2:55 pm
1 stop12h 10m
Lisbon Humberto Delgado
Sat 7/18
5:00 am-7:19 pm
2 stops19h 19m
Washington, D.C.Lisbon
IAD - LIS
IADLIS
Washington, D.C. Dulles Intl
Fri 7/24
6:36 pm-5:50 pm
2 stops18h 14m
Lisbon Humberto Delgado
Sun 8/2
9:55 am-5:51 pm
1 stop12h 56m
Washington, D.C.Lisbon
IAD - LIS
IADLIS
Washington, D.C. Dulles Intl
Sat 8/1
10:30 pm-10:35 am
Nonstop7h 05m
Lisbon Humberto Delgado
Sun 8/16
5:05 am-4:05 pm
1 stop16h 00m
Washington, D.C.Lisbon
IAD - LIS
IADLIS
Washington, D.C. Dulles Intl
Thu 7/23
10:25 pm-10:30 am
Nonstop7h 05m
Lisbon Humberto Delgado
Sun 8/2
5:05 am-4:05 pm
1 stop16h 00m
Washington, D.C.Lisbon
IAD - LIS
IADLIS
Washington, D.C. Dulles Intl
Fri 7/31
5:26 pm-5:50 pm
2 stops19h 24m
Lisbon Humberto Delgado
Mon 8/10
5:00 am-6:33 pm
2 stops18h 33m
Washington, D.C.Lisbon
IAD - LIS
IADLIS
Washington, D.C. Dulles Intl
Fri 7/24
10:25 pm-10:30 am
Nonstop7h 05m
Lisbon Humberto Delgado
Wed 7/29
6:15 am-7:25 pm
1 stop18h 10m
Washington, D.C.Lisbon
IAD - LIS
IADLIS
Washington, D.C. Dulles Intl
Thu 7/2
10:25 pm-10:30 am
Nonstop7h 05m
Lisbon Humberto Delgado
Wed 7/15
12:20 pm-3:15 pm
Nonstop7h 55m
Washington, D.C.Lisbon
IAD - LIS
IADLIS
Washington, D.C. Dulles Intl
Sat 5/30
8:30 pm-9:20 pm
1 stop19h 50m
Lisbon Humberto Delgado
Sat 6/20
7:10 am-7:20 pm
2 stops17h 10m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*3 stars |
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 82 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Lisbon (average of $663). Flying from Washington, D.C. Dulles Intl Airport to Lisbon in June is currently the most expensive (average of $1,351). 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.
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.
About 28% of weekly flights between Washington, D.C. and Lisbon have experienced delays in the past year, with the average delay time being 146 minutes.
Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.
Saturday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.
Over the last year, TAP AIR PORTUGAL have had the lowest number of delays on this route, with just 26% of flights being delayed.
Boarding
Overall
Food
Entertainment
Comfort
Crew
Reviews
Jim,Apr 2026
SEA - IST
Boarding
Overall
Food
Entertainment
Comfort
Crew
Reviews
Jim,Apr 2026
SEA - IST
Boarding
Overall
Food
Entertainment
Comfort
Crew
Reviews
Jim,Apr 2026
SEA - IST
Boarding
Overall
Food
Entertainment
Comfort
Crew
Reviews
Jim,Apr 2026
SEA - IST
Boarding
Overall
Food
Entertainment
Comfort
Crew
Reviews
Jim,Apr 2026
SEA - IST
Boarding
Overall
Food
Entertainment
Comfort
Crew
Reviews
Jim,Apr 2026
SEA - IST
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$480 | Average$620 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$504 | Average$599 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$526 | Average$961 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$544 | Average$736 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$591 | Average$664 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$649 | Average$866 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$707 | Average$1,227 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$738 | Average$1,392 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$739 | Average$1,129 | FlexibilityNo cancel fee | On-time69% |