
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $509 (FlightHub) |
One-way from | $268 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $666 |
Good round-trip deal | $540 or less |
Good one-way deal | $388 or less |
Fly from
Fly to
Route
Depart
Return
Price
Washington, D.C.Lisbon
IAD - LIS
IADLIS
Washington, D.C. Dulles Intl
Mon 4/13
8:20 pm-3:35 pm
1 stop14h 15m
Lisbon Humberto Delgado
Tue 4/21
6:15 pm-4:50 pm
2 stops27h 35m
Washington, D.C.Lisbon
IAD - LIS
IADLIS
Washington, D.C. Dulles Intl
Fri 5/8
8:20 pm-9:00 am
1 stop31h 40m
Lisbon Humberto Delgado
Wed 5/20
4:25 pm-4:50 pm
1 stop29h 25m
Washington, D.C.Lisbon
DCA - LIS
DCALIS
Washington, D.C. Reagan-National
Tue 3/3
12:05 pm-3:40 pm
2 stops22h 35m
Lisbon Humberto Delgado
Wed 3/11
7:00 pm-10:36 pm
2 stops31h 36m
Washington, D.C.Lisbon
IAD - LIS
IADLIS
Washington, D.C. Dulles Intl
Wed 4/15
8:20 pm-10:10 pm
2 stops20h 50m
Lisbon Humberto Delgado
Wed 4/29
7:15 am-4:50 pm
1 stop14h 35m
Washington, D.C.Lisbon
IAD - LIS
IADLIS
Washington, D.C. Dulles Intl
Thu 3/19
2:30 pm-3:05 pm
1 stop20h 35m
Lisbon Humberto Delgado
Sun 3/22
6:05 am-12:45 pm
1 stop34h 40m
Washington, D.C.Lisbon
DCA - LIS
DCALIS
Washington, D.C. Reagan-National
Mon 4/6
2:00 pm-3:35 pm
2 stops20h 35m
Lisbon Humberto Delgado
Sat 4/11
7:00 am-10:37 pm
2 stops20h 37m
Washington, D.C.Lisbon
IAD - LIS
IADLIS
Washington, D.C. Dulles Intl
Sat 3/21
10:15 pm-3:05 pm
1 stop36h 50m
Lisbon Humberto Delgado
Wed 3/25
4:05 pm-8:20 pm
1 stop32h 15m
Washington, D.C.Lisbon
IAD - LIS
IADLIS
Washington, D.C. Dulles Intl
Tue 3/3
12:24 pm-3:40 pm
2 stops22h 16m
Lisbon Humberto Delgado
Tue 3/17
6:10 pm-6:15 pm
2 stops28h 05m
Washington, D.C.Lisbon
IAD - LIS
IADLIS
Washington, D.C. Dulles Intl
Sat 3/21
9:30 pm-8:55 am
1 stop31h 25m
Lisbon Humberto Delgado
Wed 3/25
12:00 pm-6:15 pm
2 stops34h 15m
BaltimoreLisbon
BWI - LIS
BWILIS
Baltimore/Washington
Wed 4/15
8:30 pm-1:50 pm
1 stop12h 20m
Lisbon Humberto Delgado
Sun 4/19
3:00 pm-7:25 pm
1 stop33h 25m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*1 star |
Booking 82 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. to Lisbon. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Currently, July is the cheapest month in which you can book a flight from Washington, D.C. to Lisbon (average of $345). Flying from Washington, D.C. to Lisbon in December is currently the most expensive (average of $549). 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.
When flying from Washington, D.C. to Lisbon, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
About 28% of weekly flights between Washington, D.C. and Lisbon have experienced delays in the past year, with the average delay time being 144 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 Sunday 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
Entertainment
Food
Crew
Overall
Comfort
Reviews
Dane,Jan 2026
TYS - IAD
Boarding
Entertainment
Food
Crew
Overall
Comfort
Reviews
Dane,Jan 2026
TYS - IAD
Boarding
Entertainment
Food
Crew
Overall
Comfort
Reviews
Dane,Jan 2026
TYS - IAD
Boarding
Entertainment
Food
Crew
Overall
Comfort
Reviews
Dane,Jan 2026
TYS - IAD
Boarding
Entertainment
Food
Crew
Overall
Comfort
Reviews
Dane,Jan 2026
TYS - IAD
Boarding
Entertainment
Food
Crew
Overall
Comfort
Reviews
Dane,Jan 2026
TYS - IAD
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$344 | Average$414 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$437 | Average$951 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$480 | Average$790 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$481 | Average$599 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$508 | Average$1,022 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$547 | Average$1,147 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$552 | Average$693 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$585 | Average$664 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$592 | Average$770 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$737 | Average$1,125 | FlexibilityNo cancel fee | On-timeN/A |