$312+ Cheap flights from Portugal to Washington, D.C. (WAS)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Portugal to Washington, D.C. with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Portugal to Washington, D.C.
Keep the following information in mind while searching for Portugal to Washington, D.C. flight deals. Data was last updated June 12, 2025.
Round-trip from | $466 (Cheapflightsfares) |
|---|---|
One-way from | $312 (Kiwi.com) |
Popular in | July |
Cheapest in | September |
Average price | $734 |
Good round-trip deal | $617 or less |
Good one-way deal | $591 or less |
Find flight deals from Portugal to Washington, D.C.
Cheapest flights from Portugal to Washington, D.C.Explore the most affordable flight options available from Portugal to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
Explore the most affordable flight options available from Portugal to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
This Booking.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Cheapflightsfares deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Booking.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This British Airways deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This oojo deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This KLM deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Cheapflights Fare Finder
Customize your flight search to find flights from Portugal to Washington, D.C. 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 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from Portugal to Washington, D.C. that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
LisbonWashington, D.C.
LIS - IAD
LISIAD
Lisbon Humberto Delgado
Fri 8/29
6:35 am-3:00 pm
1 stop13h 25m
Washington, D.C. Dulles Intl
Tue 9/2
10:40 pm-5:55 pm
1 stop14h 15m
LisbonWashington, D.C.
LIS - IAD
LISIAD
Lisbon Humberto Delgado
Thu 9/11
5:00 am-3:35 pm
1 stop15h 35m
Washington, D.C. Dulles Intl
Fri 9/19
9:20 pm-2:50 pm
1 stop12h 30m
LisbonWashington, D.C.
LIS - IAD
LISIAD
Lisbon Humberto Delgado
Wed 9/3
6:35 am-3:00 pm
1 stop13h 25m
Washington, D.C. Dulles Intl
Wed 9/17
10:40 pm-5:55 pm
1 stop14h 15m
LisbonWashington, D.C.
LIS - DCA
LISDCA
Lisbon Humberto Delgado
Thu 10/23
5:00 am-6:05 pm
2 stops18h 05m
Washington, D.C. Reagan-National
Sun 11/2
11:00 am-8:00 am
1 stop16h 00m
LisbonBaltimore
LIS - BWI
LISBWI
Lisbon Humberto Delgado
Wed 11/19
11:15 am-9:44 pm
2 stops15h 29m
Baltimore/Washington
Thu 11/27
8:30 pm-6:00 pm
1 stop16h 30m
PortoWashington, D.C.
OPO - IAD
OPOIAD
Porto
Mon 6/23
6:30 am-3:35 pm
1 stop14h 05m
Washington, D.C. Dulles Intl
Wed 7/9
9:20 pm-3:30 pm
1 stop13h 10m
LisbonWashington, D.C.
LIS - IAD
LISIAD
Lisbon Humberto Delgado
Thu 8/28
7:20 am-5:35 pm
1 stop15h 15m
Washington, D.C. Dulles Intl
Mon 10/27
10:55 pm-6:55 pm
1 stop16h 00m
LisbonBaltimore
LIS - BWI
LISBWI
Lisbon Humberto Delgado
Tue 11/11
10:40 am-6:45 pm
1 stop13h 05m
Baltimore/Washington
Tue 12/2
8:30 pm-5:45 pm
1 stop16h 15m
PortoWashington, D.C.
OPO - IAD
OPOIAD
Porto
Wed 10/8
8:15 am-3:00 pm
1 stop11h 45m
Washington, D.C. Dulles Intl
Tue 10/21
4:35 pm-11:40 am
1 stop14h 05m
PortoWashington, D.C.
OPO - IAD
OPOIAD
Porto
Wed 10/8
10:25 pm-3:20 pm
1 stop21h 55m
Washington, D.C. Dulles Intl
Tue 10/21
5:00 pm-2:05 pm
1 stop16h 05m
Best time to book a flight from Portugal to Washington, D.C.
Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Portugal with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Portugal to Washington, D.C.
What is the cheapest month to book a flight from Portugal to Washington, D.C.?
Currently, August is the cheapest month in which you can book a flight from Portugal to Washington, D.C. (average of $241). Flying from Portugal to Washington, D.C. in March is currently the most expensive (average of $290). 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 PT to WAS?
Find hourly flight availability from Portugal to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.
When flying from Portugal to Washington, D.C., the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 39% versus a flight in the morning.
Weekly flight availability from Portugal to Washington, D.C.
Explore weekly flight availability from Portugal to Washington, D.C.. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 12, 2025.
The most flights from PT0 to WAS are scheduled on a Monday (7 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).
Rainfall in Washington, D.C. by month
Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.
Temperature in Washington, D.C. by month
Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).
Reviews of airlines servicing Washington, D.C.
Get insights into the airlines that provide service to Washington, D.C.. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington, D.C.. Reviews last updated June 12, 2025.
Get a feel of what it's like to fly with Delta, KLM and LOT from Portugal to Washington, D.C. by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
Boarding
Crew
Entertainment
Comfort
Overall
Reviews
Kim,May 2025
PIH - SLC
Food
Boarding
Crew
Entertainment
Comfort
Overall
Reviews
Kim,May 2025
PIH - SLC
Food
Boarding
Crew
Entertainment
Comfort
Overall
Reviews
Kim,May 2025
PIH - SLC
Food
Boarding
Crew
Entertainment
Comfort
Overall
Reviews
Kim,May 2025
PIH - SLC
Food
Boarding
Crew
Entertainment
Comfort
Overall
Reviews
Kim,May 2025
PIH - SLC
Food
Boarding
Crew
Entertainment
Comfort
Overall
Reviews
Kim,May 2025
PIH - SLC
Related info for your journey
Find useful and relevant information for your journey from Portugal to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Portugal?
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Alternative routes for Portugal to Washington, D.C.
See prices for flight routes from nearby airports that may be better suited for you.
Top 2 airlines flying from Portugal to Washington, D.C.
Discover the top 2 airlines that operate flights from Portugal to Washington, D.C.. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$480 | Average$742 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$534 | Average$636 | FlexibilityNo cancel fee | On-time69% |