When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 17 days in advance, which can save you up to 18% on flights from Washington, D.C. Dulles Intl Airport to Portugal compared to booking the week you need them. Waiting 17 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 $648. For sooner than that we have options available in the next 3 days from $1,068.
The best pricing can be found in the month of February. Prices to Portugal from Washington, D.C. Dulles Intl Airport average $828. You can even find prices in February for less than $828, as users have found deals to Portugal from as low as $352. The month of July appears to be one of the more expensive times to travel to Portugal from Washington, D.C. Dulles Intl Airport. Flying in the targeted month can save you up to 31%.
When flying from Washington, D.C. Dulles Intl Airport 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
$356 - $582
Route
Depart
Return
Price
Washington, D.C. Dulles IntlLisbon Humberto Delgado
IAD - LIS
IADLIS
Washington, D.C. Dulles Intl
Sun 4/21
1 stop20h 50m
Lisbon Humberto Delgado
Fri 4/26
1 stop25h 00m
Washington, D.C. Dulles IntlPorto
IAD - OPO
IADOPO
Washington, D.C. Dulles Intl
Tue 4/16
1 stop19h 05m
Porto
Thu 4/25
1 stop15h 10m
Washington, D.C. Dulles IntlPorto
IAD - OPO
IADOPO
Washington, D.C. Dulles Intl
Thu 4/11
1 stop12h 15m
Porto
Tue 4/16
1 stop16h 00m
Washington, D.C. Dulles IntlLisbon Humberto Delgado
IAD - LIS
IADLIS
Washington, D.C. Dulles Intl
Mon 4/29
1 stop15h 35m
Lisbon Humberto Delgado
Sun 5/5
1 stop29h 25m
Washington, D.C. Dulles IntlPorto
IAD - OPO
IADOPO
Washington, D.C. Dulles Intl
Wed 4/10
1 stop16h 05m
Porto
Wed 4/17
1 stop16h 00m
Washington, D.C. Dulles IntlPorto
IAD - OPO
IADOPO
Washington, D.C. Dulles Intl
Mon 4/15
2 stops15h 55m
Porto
Fri 4/19
2 stops18h 10m
Washington, D.C. Dulles IntlPorto
IAD - OPO
IADOPO
Washington, D.C. Dulles Intl
Tue 4/23
1 stop33h 40m
Porto
Sun 4/28
1 stop25h 55m
Washington, D.C. Dulles IntlPorto
IAD - OPO
IADOPO
Washington, D.C. Dulles Intl
Sun 7/28
1 stop20h 00m
Porto
Fri 8/23
1 stop12h 30m
Washington, D.C. Dulles IntlPorto
IAD - OPO
IADOPO
Washington, D.C. Dulles Intl
Tue 4/16
2 stops20h 35m
Porto
Tue 4/23
2 stops30h 42m
No data available for this route at this time. Please check back soon.
Crew
Entertainment
Boarding
Overall
Comfort
Food
Reviews
It was a good experience other than a short delay.
Crew
Entertainment
Boarding
Overall
Comfort
Food
Reviews
It was a good experience other than a short delay.
Crew
Entertainment
Boarding
Overall
Comfort
Food
Reviews
It was a good experience other than a short delay.
Crew
Entertainment
Boarding
Overall
Comfort
Food
Reviews
It was a good experience other than a short delay.
Crew
Entertainment
Boarding
Overall
Comfort
Food
Reviews
It was a good experience other than a short delay.
Crew
Entertainment
Boarding
Overall
Comfort
Food
Reviews
It was a good experience other than a short delay.
1%of flight departures | Early morningMidnight to 6 am |
---|---|
0%of flight departures | Morning6 am to noon |
14%of flight departures | AfternoonNoon to 6 pm |
85%of flight departures | Evening6 pm to midnight |
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Yes, you can often find last-minute deals on Dulles Intl to Portugal flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.
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