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OPO - WAS

Find cheap flights from Porto to Washington, D.C. from $315

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Porto to Washington, D.C. departing on 6/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
週二 6/4
週二 6/11

Search hundreds of travel sites at once for deals on flights to Washington, D.C.

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Porto to Washington, D.C., as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Porto to Washington, D.C., as well as popular online travel agencies
In the last 7 days travelers have searched 43,369,418 times on KAYAK, and here is why:

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Cheap flight deals from Porto to Washington, D.C. (OPO-WAS)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Porto to Washington, D.C. that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
9:10 pm - 5:40 pmOPO-IAD
25h 30m1 stop
6:50 pm - 8:15 pmIAD-OPO
20h 25m1 stop
$458PLAY
Find Deal
週四, 5月 16 - 週三, 5月 29
6:00 am - 9:32 pmOPO-BWI
20h 32m2 stops
6:25 am - 6:55 amBWI-OPO
19h 30m2 stops
$557United Airlines
Find Deal
週三, 6月 5 - 週三, 6月 12
8:40 am - 7:52 pmOPO-DCA
16h 12m2 stops
4:55 pm - 1:45 pmDCA-OPO
15h 50m2 stops
週三, 6月 5 - 週三, 6月 12
8:30 pm - 3:35 pmOPO-IAD
24h 05m1 stop
6:25 pm - 3:30 pmIAD-OPO
16h 05m1 stop
週日, 6月 16 - 週一, 8月 5
12:20 pm - 11:24 pmOPO-DCA
16h 04m2 stops
5:20 pm - 3:55 pmDCA-OPO
17h 35m2 stops
$611American Airlines
Find Deal
週四, 5月 16 - 週三, 5月 29
8:15 am - 7:45 pmOPO-IAD
16h 30m2 stops
1:13 pm - 11:40 amIAD-OPO
17h 27m2 stops
$647American Airlines
Find Deal
週三, 6月 5 - 週三, 6月 12
5:00 am - 10:52 pmOPO-BWI
22h 52m2 stops
5:17 pm - 3:30 pmBWI-OPO
17h 13m2 stops
$694Delta
Find Deal
週四, 5月 16 - 週三, 5月 29
5:00 am - 5:21 pmOPO-IAD
17h 21m2 stops
4:59 pm - 3:30 pmIAD-OPO
17h 31m2 stops
$694Delta
Find Deal
週四, 5月 16 - 週三, 5月 29
11:25 am - 10:42 pmOPO-BWI
16h 17m2 stops
3:35 pm - 10:40 amBWI-OPO
14h 05m2 stops
$1,176KLM
Find Deal
週五, 7月 19 - 週二, 9月 17
11:25 am - 10:42 pmOPO-BWI
16h 17m2 stops
3:35 pm - 10:40 amBWI-OPO
14h 05m2 stops
$1,323KLM
Find Deal
週四, 7月 18 - 週三, 9月 18

Flights from Porto to Washington, D.C. - Travel Insights & Trends

Get data-powered insights and trends into flights from Porto to Washington, D.C. to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Porto to Washington, D.C.?

The average price of all flights from Porto to Washington, D.C. clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from Porto to Washington, D.C., look for departures on Thursdays and avoid leaving on a Friday, as it's usually the priciest day. When flying back from Washington, D.C., Sunday is the cheapest day to fly and Thursday is the most expensive.

What is the cheapest month to fly from Porto to Washington, D.C.?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Porto to Washington, D.C., removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Porto to Washington, D.C. is April, where tickets cost $472 on average. On the other hand, the most expensive months are July and August, where the average cost of tickets is $1,035 and $790 respectively.

How far in advance should I book a flight from Porto to Washington, D.C.?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Porto to Washington, D.C., removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Porto to Washington, D.C., you should book around 3 days before departure. For the absolute cheapest price, our data suggests you should book 83 days before departure.

Which airlines provide the cheapest flights from Porto to Washington, D.C.?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The cheapest return flight ticket from Porto to Washington, D.C. found by KAYAK users in the last 72 hours was for $458 on PLAY, followed by United Airlines ($557). One-way flight deals have also been found from as low as $353 on Royal Air Maroc and from $416 on PLAY.

Good to know

Low season

April

High season

December

Cheapest flight

$315
Best time to beat the crowds with an average 30% drop in price.
Most popular time to fly and prices are also 18% lower on average.
Flight from Porto to Baltimore

When to book flights from Porto to Washington, D.C.

Are your dates flexible? Find out the best times to travel from Porto to Washington, D.C. based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Porto to Washington, D.C.

  • What is the cheapest flight from Porto to Washington, D.C.?

    In the last 3 days, the lowest price for a flight from Porto to Washington, D.C. was $315 for a one-way ticket and $458 for a round-trip.

  • Do I need a passport to fly between Porto and Washington, D.C.?

    Yes

  • Which airports will I be using when flying from Porto to Washington, D.C.?

    On your way to Washington, D.C., you’ll fly out from Porto. You’ll be landing in one of Washington, D.C.’s 2 airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl.

  • Which aircraft models fly most regularly from Porto to Washington, D.C.?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Porto to Washington, D.C.?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Porto and Washington, D.C., with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Porto to Washington, D.C., KLM or TAP AIR PORTUGAL?

    The two airlines most popular with KAYAK users for flights from Porto to Washington, D.C. are KLM and TAP AIR PORTUGAL. With an average price for the route of $540 and an overall rating of 7.8, KLM is the most popular choice. TAP AIR PORTUGAL is also a great choice for the route, with an average price of $805 and an overall rating of 7.1.

  • How does KAYAK find such low prices on flights from Porto to Washington, D.C.?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Porto to Washington, D.C..

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Porto to Washington, D.C.?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. from Porto is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Porto to Washington, D.C.?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington, D.C. with an airline and back to Porto with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Porto to Washington, D.C.?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington, D.C. from Porto up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airlines flying from Porto to Washington, D.C.

 
See real verified KAYAK customer reviews for airlines flying from Porto to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Porto to Washington, D.C.? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
KLMOverall score based on 1603 reviews
8.4Crew
7.8Boarding
7.3Food
7.2Entertainment
7.6Comfort
Airline reviews

We left one hour late because of technical difficulties. The economy comfort seats are great for the price. The crew was mediocre, they do not provide a pleasant experience, they just deliver food and drinks and give orders, not very amicable, no service and hospitality focus.

8.0 ExcellentAnonymous, Feb 2024AMS - ATL
Read more about KLM reviews

We left one hour late because of technical difficulties. The economy comfort seats are great for the price. The crew was mediocre, they do not provide a pleasant experience, they just deliver food and drinks and give orders, not very amicable, no service and hospitality focus.

Mostly fine. Minor delays departing and arriving. Quite a cramped plane, not so much as regards legroom but very narrow seats. Quiet nice food. Non-working USB charger. Flight attendants were helpful but not particularly proactive — one had to work to get their attention (but all was fine once they notice you), very Dutch style:)

The flight itself it was great nice food the crew were very nice and helpful, Checking in from Birmingham wasn't great long queues for bag dropped, And I had my hand luggage case taken away from me even though I requested to have it with me as I had breakables items. I was told I can not because of the length of the flight with no explanation at all no options was given for me to take my fragile items out of my case it was taken away with hold buggage I find the staff member who was checking me in very unpleasant !! Can we please be advise if the rules have changed about the the carry on hand luggage it will be easier to be advise on booking your tickect if we not allowed to take the hand luggage with me. Overall I had a good flight .

The plane was clean and the staff was friendly. Food and drinks as expected on international flights. The entertainment system was old style, with a pullout controller, and selections not as extensive as on other flights.

One of their staff was so rude with discriminative. Such a reputed airline shouldn't hire such kind of arrogant attendants.

Well, in my case; the flight was delayed 1 hour, we have to wait in the plane to get green light. And the plane (probably because was a short trip) did not have entertainment or WiFi. No a good experience.

The seats are too cramped in that plane. If you’re above 1,80m consider alternatives or first class I guess… There were no emergency exits to seat somewhere with more legroom

one of my bags was drenched with fish smelling water and all my new clothes bought at dublin and the 23kg checked in bag were all gone waste with very pungent fish smell and also having stains

At the transit could be less time not like 12 hour 6 hours the mix should be 4 hour, thanks

The Crew have no idea about the food they're serving the passengers. The Crew MUST be instructed before each flight about the menu that will be served to the passengers, whether the food is vegetarian or non-vegetarian, whether it is Halal, Kosher or not.

Adequate. You get what you pay for. Absolutely no frills but a cost effective way to travel between European countries.

Disastrous boarding. Entered air bridge only to descend stairs and enter a bus. Plane had insufficient storage, was old and chair recline was damaged. Air stewardess was sullen.

I wish to bring to your attention an incident involving a flight attendant that occurred on my recent journey. The attendant displayed a lack of courtesy, which was concerning. For instance, after accidentally spilling water on a passenger, the attendant dismissed the situation rather than offering a proper apology. Additionally, when I handed over my trash, the attendant reacted negatively because I placed a paper cup on the tray, she told me this doesn't go here and threw it back on my table. It was apparent that she was experiencing a challenging day, which unfortunately impacted the service provided to myself and other passengers. While I understand that everyone can have an off day, it is essential for customer-facing staff to seek support to manage personal stress without it affecting their professional responsibilities.

The flight crew was good, the flight itself was quick and comfortable

Boarding was late by 30 min due to a bus missing to take us to the plane... And then the flight was delayed by about 90 minutes, in a 60 min flight

Very agressive with bags both arrival and departures found minor damage to my luggage including my check bag being broken into nothing of value was in there so I do not believe anything was taken but definitely broken zipper into the outer pockets of suitcase

Everything was nearly perfect, and TAP staff were especially helpful when we missed our connecting flights and had to get on the next flight to Rome. The only aspect that could have been better was boarding: it was somewhat disorganized, which created a bit of stress. But in the end, everyone got on the plane, so the less-then-perfect boarding process did not take away from the overall excellent experience.

TAP Air makes you take a bus on arrival or departure, making it difficult for passengers to make connections.

Two of three flight attendants were not super kind as I would expect. The very kind young lady in my section was wonderful but then lady and man up front were not. Sorry but it makes a difference !

Great staff who were ready working with smile 6 in the morning on New Year’s Day. Although security checkpoint was way too busy, the airline staff were understanding and waited few minutes after boarding. We took off not only exactly on time, but arrived 20 minutes early. Two thumbs up!!!

Book cheap flights from Porto to Washington, D.C.

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Porto to Washington, D.C. found on KAYAK in the last 72 hours.
6/11週二
2 stops
38h 33mOPO-BWI
$315
6/5週三
2 stops
29h 30mOPO-IAD
$329
6/11週二
1 stopRoyal Air Maroc
29h 20mOPO-IAD
$353
7/13週六
1 stopPLAY
25h 45mOPO-BWI
$416
7/13週六
1 stopPLAY
25h 45mOPO-BWI
$420
10/16週三
1 stopTAP AIR PORTUGAL
15h 20mOPO-IAD
$475
6/13週四
1 stopAmerican Airlines
16h 00mOPO-IAD
$492
6/24週一
2 stopsAmerican Airlines
29h 43mOPO-IAD
$507
7/19週五
1 stopRoyal Air Maroc
29h 20mOPO-IAD
$582
6/24週一
1 stopTAP AIR PORTUGAL
27h 05mOPO-IAD
$608

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Porto - Washington, D.C. Flights

Departure:

Porto (OPO)Portugal

Return flight deals:

Washington, D.C. - Porto

Cabin classes: