When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 42 days in advance, which can save you up to 30% on flights from Washington, D.C. to Portugal compared to booking the week you need them. Waiting 42 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $714. For sooner than that we have options available in the next 3 days from $1,003.
Flights from Washington, D.C. to Portugal lean towards being more expensive in June. Prices are generally better when you fly from Washington, D.C. to Portugal in January, with the cheapest ticket starting at $476.
When flying from Washington, D.C. to Portugal, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Fly from
Fly to
Budget
$345 - $543
Route
Depart
Return
Price
Washington, D.C. Dulles IntlLisbon Humberto Delgado
IAD - LIS
IADLIS
Washington, D.C. Dulles Intl
Sun 11/3
1 stop21h 10m
Lisbon Humberto Delgado
Mon 11/11
1 stop24h 40m
Washington, D.C. Dulles IntlPorto
IAD - OPO
IADOPO
Washington, D.C. Dulles Intl
Tue 9/24
1 stop21h 00m
Porto
Mon 10/21
1 stop26h 20m
Baltimore/WashingtonPorto
BWI - OPO
BWIOPO
Baltimore/Washington
Sun 11/10
2 stops17h 29m
Porto
Sat 11/16
2 stops16h 01m
Washington, D.C. Dulles IntlPorto
IAD - OPO
IADOPO
Washington, D.C. Dulles Intl
Fri 11/1
1 stop16h 40m
Porto
Tue 11/5
1 stop14h 50m
Washington, D.C. Dulles IntlPorto
IAD - OPO
IADOPO
Washington, D.C. Dulles Intl
Sun 11/10
2 stops18h 00m
Porto
Wed 11/20
2 stops20h 05m
Washington, D.C. Dulles IntlLisbon Humberto Delgado
IAD - LIS
IADLIS
Washington, D.C. Dulles Intl
Wed 10/16
1 stop10h 00m
Lisbon Humberto Delgado
Thu 10/31
1 stop29h 35m
Washington, D.C. Dulles IntlPorto
IAD - OPO
IADOPO
Washington, D.C. Dulles Intl
Sun 11/10
2 stops16h 20m
Porto
Sat 11/16
1 stop33h 30m
Washington, D.C. Reagan-NationalPorto
DCA - OPO
DCAOPO
Washington, D.C. Reagan-National
Sun 11/10
2 stops17h 55m
Porto
Wed 11/20
2 stops16h 07m
Washington, D.C. Dulles IntlPorto
IAD - OPO
IADOPO
Washington, D.C. Dulles Intl
Fri 11/1
2 stops16h 20m
Porto
Tue 11/5
1 stop14h 50m
No data available for this route at this time. Please check back soon.
Food
Comfort
Crew
Entertainment
Boarding
Overall
Reviews
Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.
Food
Comfort
Crew
Entertainment
Boarding
Overall
Reviews
Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.
Food
Comfort
Crew
Entertainment
Boarding
Overall
Reviews
Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.
Food
Comfort
Crew
Entertainment
Boarding
Overall
Reviews
Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.
Food
Comfort
Crew
Entertainment
Boarding
Overall
Reviews
Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.
Food
Comfort
Crew
Entertainment
Boarding
Overall
Reviews
Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.
1%of flight departures | Early morningMidnight to 6 am |
---|---|
0%of flight departures | Morning6 am to noon |
5%of flight departures | AfternoonNoon to 6 pm |
94%of flight departures | Evening6 pm to midnight |
Deals for Washington, D.C. to Portugal flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.
Cheapflights helps you find that perfect flight to Portugal from Washington, D.C. by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!
Cheapflights does show flights with no change fees to all users. To see these options for flights from Washington, D.C. to Portugal, users can toggle the no change fees filter when performing a flight search.
Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!