$322+ Cheap flights from Porto (OPO) 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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Porto 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 Porto to Washington, D.C.
Discover tips and strategies to find the most affordable flight options for your journey from Porto (OPO) to Washington, D.C. (WAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 16, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $470 (KLM) |
One-way from | $322 (Kiwi.com) |
Popular in | January |
Cheapest in | April |
Average price | $886 |
Find flight deals from Porto to Washington, D.C.
Cheapest flights from Porto to Washington, D.C.Explore the most affordable flight options available from Porto to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 16, 2025.
Explore the most affordable flight options available from Porto to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 16, 2025.
This KLM deal was found by Cheapflights users on 1/15. 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.
This KLM deal was found by Cheapflights users on 1/16. 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.
This Delta deal was found by Cheapflights users on 1/15. 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 Delta deal was found by Cheapflights users on 1/15. 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 oojo deal was found by Cheapflights users on 1/15. 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 Delta deal was found by Cheapflights users on 1/15. 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 British Airways deal was found by Cheapflights users on 1/15. 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 AirNGo deal was found by Cheapflights users on 1/15. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Lufthansa deal was found by Cheapflights users on 1/16. 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 Lufthansa 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 1/15. 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 SWISS deal was found by Cheapflights users on 1/16. 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 SWISS 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 1/16. 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.
Find flights from Porto to Washington, D.C. within your budget
Customize your flight search to find flights from Porto 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 January 16, 2025.
Fly from
Fly to
Route
Depart
Return
Price
PortoWashington, D.C.
OPO - IAD
OPOIAD
Porto
Sun 2/16
5:00 am-3:45 pm
1 stop15h 45m
Washington, D.C. Dulles Intl
Wed 2/26
6:40 pm-10:50 am
1 stop11h 10m
PortoWashington, D.C.
OPO - IAD
OPOIAD
Porto
Sat 2/1
8:05 pm-3:45 pm
1 stop24h 40m
Washington, D.C. Dulles Intl
Sat 2/15
6:30 pm-10:50 am
1 stop11h 20m
PortoWashington, D.C.
OPO - IAD
OPOIAD
Porto
Sun 2/16
5:00 am-3:45 pm
1 stop15h 45m
Washington, D.C. Dulles Intl
Wed 2/26
12:05 pm-10:30 am
2 stops17h 25m
PortoWashington, D.C.
OPO - DCA
OPODCA
Porto
Sun 2/16
5:00 am-7:18 pm
2 stops19h 18m
Washington, D.C. Reagan-National
Wed 2/26
11:35 am-10:30 am
2 stops17h 55m
PortoWashington, D.C.
OPO - IAD
OPOIAD
Porto
Tue 5/6
10:55 pm-3:20 pm
1 stop21h 25m
Washington, D.C. Dulles Intl
Sat 5/10
8:20 pm-5:05 pm
1 stop15h 45m
PortoBaltimore
OPO - BWI
OPOBWI
Porto
Sun 2/16
5:00 am-11:08 pm
2 stops23h 08m
Baltimore/Washington
Wed 2/26
3:30 pm-3:25 pm
2 stops18h 55m
PortoWashington, D.C.
OPO - IAD
OPOIAD
Porto
Thu 4/10
9:40 am-8:10 pm
1 stop15h 30m
Washington, D.C. Dulles Intl
Thu 4/24
10:40 pm-8:25 pm
1 stop16h 45m
PortoWashington, D.C.
OPO - IAD
OPOIAD
Porto
Mon 3/31
4:20 pm-3:35 pm
2 stops28h 15m
Washington, D.C. Dulles Intl
Thu 5/15
9:20 pm-3:30 pm
1 stop13h 10m
PortoWashington, D.C.
OPO - IAD
OPOIAD
Porto
Sat 2/1
6:00 am-8:20 pm
1 stop19h 20m
Washington, D.C. Dulles Intl
Sat 2/15
5:50 pm-3:10 pm
1 stop16h 20m
PortoBaltimore
OPO - BWI
OPOBWI
Porto
Thu 4/10
9:40 am-7:35 pm
1 stop14h 55m
Baltimore/Washington
Thu 4/24
9:20 pm-8:25 pm
1 stop18h 05m
Compare providers for flights from Porto to Washington, D.C.
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Porto to Washington, D.C. in January.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Porto-Washington, D.C. flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Porto-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Porto-Washington, D.C. flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Porto-Washington, D.C. flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Porto-Washington, D.C. flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Porto to Washington, D.C.
Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Porto with our price prediction graph.
Travel insights for flights from Porto to Washington, D.C.
Get recent, data-driven insights about flights from Porto to Washington, D.C. including ideal travel times, pricing trends, and more.
What is the cheapest month to book a flight from Porto to Washington, D.C.?
Currently, August is the cheapest month in which you can book a flight from Porto to Washington, D.C. (average of $241). Flying from Porto 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 OPO to WAS?
Find hourly flight availability from Porto 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 January 16, 2025.
A simple way to save on the total cost of your ticket is to fly from Porto to Washington, D.C. in the morning. If you’re flexible enough to do this you can expect to save up to 32% on your trip compared to booking a flight at noon.
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 January 16, 2025.
Read reviews from past customers who have flown United Airlines, KLM and British Airways from Porto to Washington, D.C.. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
Food
Overall
Entertainment
Comfort
Crew
Reviews
Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Boarding
Food
Overall
Entertainment
Comfort
Crew
Reviews
Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Boarding
Food
Overall
Entertainment
Comfort
Crew
Reviews
Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Boarding
Food
Overall
Entertainment
Comfort
Crew
Reviews
Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Boarding
Food
Overall
Entertainment
Comfort
Crew
Reviews
Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Boarding
Food
Overall
Entertainment
Comfort
Crew
Reviews
Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Related info for your journey
Find useful and relevant information for your journey from Porto 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.
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Alternative routes for Porto to Washington, D.C.
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Top airline flying from Porto to Washington, D.C.
Discover the top airline that operate flights from Porto 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 January 16, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$501 | Average$812 | FlexibilityNo cancel fee | On-timeN/A |