$421 Find Cheap Flights from Porto to District of Columbia

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 District of Columbia departing on 10/2. 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
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to District of Columbia

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Porto to District of Columbia, 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 District of Columbia, as well as popular online travel agencies
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Best District of Columbia Flight Deals from Porto

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Cheap Flights from Porto to District of Columbia

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Porto to District of Columbia 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Porto to District of Columbia

tor., sep. 4 - lør., sep. 20
TAP AIR PORTUGAL Logo
7:00 am - 3:20 pmOPO-IAD
13h 20m1 stop
TAP AIR PORTUGAL Logo
5:00 pm - 10:10 amIAD-OPO
12h 10m1 stop
$476TAP AIR PORTUGAL
Find Deal
tor., sep. 4 - lør., sep. 20
Delta Logo
6:30 am - 3:35 pmOPO-IAD
14h 05m1 stop
Delta Logo
5:10 pm - 3:30 pmIAD-OPO
17h 20m2 stops
$489Delta
Find Deal
ons., okt. 8 - tir., okt. 21
American Airlines Logo
8:15 am - 3:00 pmOPO-IAD
11h 45m1 stop
American Airlines Logo
4:35 pm - 3:55 pmIAD-OPO
18h 20m1 stop
$493American Airlines
Find Deal
ons., okt. 8 - tir., okt. 21
Delta Logo
6:15 am - 11:29 pmOPO-DCA
22h 14m2 stops
Delta Logo
5:00 pm - 3:30 pmDCA-OPO
17h 30m2 stops
$494Delta
Find Deal
ons., okt. 8 - tir., okt. 21
Delta Logo
11:35 am - 10:19 pmOPO-DCA
15h 44m2 stops
Delta Logo
5:00 pm - 3:30 pmDCA-OPO
17h 30m2 stops
$495Delta
Find Deal
ons., okt. 8 - tir., okt. 21
American Airlines Logo
8:15 am - 3:00 pmOPO-IAD
11h 45m1 stop
American Airlines Logo
4:35 pm - 11:40 amIAD-OPO
14h 05m1 stop
$496American Airlines
Find Deal
man., aug. 18 - man., aug. 25
 Logo
8:15 am - 3:00 pmOPO-IAD
11h 45m1 stop
 Logo
10:40 pm - 7:50 pmIAD-OPO
16h 10m1 stop
man., sep. 1 - man., sep. 8
 Logo
9:20 am - 8:50 pmOPO-IAD
16h 30m2 stops
 Logo
5:45 pm - 3:05 pmIAD-OPO
16h 20m2 stops
ons., juli 30 - ons., aug. 6
KLM Logo
9:20 am - 4:20 pmOPO-IAD
12h 00m1 stop
KLM Logo
5:25 pm - 10:15 pmIAD-OPO
23h 50m1 stop
$643KLM
Find Deal
tor., juli 3 - tor., juli 10
Lufthansa Logo
6:15 am - 7:25 pmOPO-IAD
18h 10m1 stop
Lufthansa Logo
10:20 pm - 11:20 pmIAD-OPO
20h 00m1 stop
$681Lufthansa
Find Deal
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KAYAK's insights & trends for Porto to District of Columbia flights

Get data-powered insights and trends into flights from Porto to District of Columbia 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 District of Columbia?

The average price of all round-trip flights from Porto to District of Columbia clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Porto to District of Columbia, look for departures on Mondays and avoid leaving on a Wednesday, as it's usually the priciest day. When flying back from District of Columbia, Sunday is the cheapest day to fly and Friday is the most expensive.


Good to know

Low seasonMay
High seasonOctober
Cheapest flight$421
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly and prices are also 13% lower on average.
Flight from Porto to Washington Dulles Airport

FAQs - booking District of Columbia flights

  • How does KAYAK find such low prices on flights from Porto to District of Columbia?

    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 District of Columbia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Porto to District of Columbia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Porto to District of Columbia 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 District of Columbia?

    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 from Porto to District of Columbia with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Porto to District of Columbia?

    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 from Porto to District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to District of Columbia?

    The cheapest time of day to fly to District of Columbia is generally in the morning, when round-trip flights cost $735 on average. Morning departures are around 31% cheaper than evening flights, on average. The most expensive time of day to fly to District of Columbia is generally in the evening, which is peak travel time and where the average cost of a ticket is $1,068.

Top 3 airlines serving from Porto to District of Columbia

 
See real verified KAYAK customer reviews for airlines flying from Porto to District of Columbia. 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 District of Columbia? 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 1361 reviews
7.8Boarding
7.2Food
8.4Crew
7.1Entertainment
7.7Comfort
Airline reviews

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

8.0 ExcellentShereen, Apr 2025AMS - YUL
Read more KLM reviews

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

Cabin crew professional, polite and friendly, boarding was seemless, but come on KLM surely you can do better than a pack of cheesy biscuits as an inflight snack

Cabin crew were excellent, very proffesional, polite and friendly, in flight snack was underwhelming, a packet of cheese biscuits, im sure KLM could run to a sandwich!

Legroom not all it could be, especially when the seat in front is reclined. Otherwise it was good, food and beverage were nice.

This portion of the flight was through Indigo. A local carrier. So all economy seating. No real service some refreshments for purchase standard economy stuff.

You should not have to pay for WiFi in business class

Transfer at Amsterdam airport is very convenient and the airport is easy to navigate. Boarding was also quick and easy. Cabin crew were excellent and the meals were good, although lacking in options.

This fight left ahead of time which meant it arrived early which was great. Staff were very professional, but as with all these Short hop Flights the food was a disappointing snack There was no entertainment on this flight, but I did not expect any

I flew premium economy and this was a good option. Although the seats didn’t recline much, I was able to get some sleep with my head propped against the window. The food was good and the entertainment was wonderful The staff were very attentive and professional

Overall very poor. Flight was disorganised, staff were rude and this is my second experience with KLM that I've had baggage go missing. It feels like, if you are an economy customer, KLM staff do not show you any care. I shall never fly with KLM again. Worst airline in Europe

Flight from FNC to OBO was cancelled. We were rebooked to Lisbon later in the day. It was inconvenient but it worked out ok in the end.

Terrible flight attendant attitude. Average 3-star hotel employee has better hospitality skills. Business class seats are literally a joke. TAP executives should ride business class in other airlines to develop some rudimentary sense of what business class is.

Very pleasant flight, crew was very nice. The flight was really smooth, big plane. The seats are kind of close together, so comfort was just OK. The boarding process on the way back to New York was a little chaotic. It took a long time.There were no announcements, no loudspeaker just one staff yelling out of instructions and a lot of people crowding in before their term to board. So that could really be improved a lot.

The crew was very nice. The food was good. The entertainment on the way back to Miami wasn’t as good as the flight over. I wanted to watch Wicked but on the way over from Miami to Lisbon but the screen didn’t work. On the way from Lisbon to Miami Wicked wasn’t an option. Liked the option to check out overhead carry on with our checked luggage Overall the flights were very good. I would fly TaP again

TAP boarding gate agents singled out Group A line to gate check all carry on bags …. Supposedly because of lack on bin space. BUT ALL OTHERS WERE PERMITTED WITH CARRY ON BAGS. Additionally so many passengers entering the plane after us were permitted carry on bags. And when the plane was fully loaded, there was a number of open spaces in the overhead bins. I WILL SEARCH OTHER OPTIONS BEFORE FLYING TAP AGAIN

Boarding went fast. Lisbon's gates are too small for the flights they serve.

Great pilot, textbook landing in madeira. Everything else, from booking to checkin, plane quality, seat amenities, crew engagement, and overall experience were significantly below standard. I WOULD NOT FLY TAP IF THERE IS ANY OTHER OPTION.

Worst: long walk to baggage claim Best: left on time

Got in on time. Food was the worst ever. Comfort was terrible. Check in was incredibly bad.

The flight schedules are better than some airlines. Their website is terrible, it doesn’t store any information so every time you fly you have to re-enter the data. The flight was late taking off but we still got to our destination on time.

I was very grateful for Lufthansa's role in organizing mobility support. The touchscreen on my seat was faulty: slow, stained (I couldn't get it clean), and glitchy. This made selecting movies extremely time consuming, and twice I had to start all over from the beginning.

Beautifully maintained airplane, good food, professional crew, top-notch communication. I highly recommend Lufthansa for intercontinental flights between the United States and Europe.

Lufthansa is my favorite airline and have flown oversea with them for the past 25 years: i always found them so professional and incredibly efficient from checking in to arrival. I also love their Munich or Frankfurt airports.

The United flight was excellent! The flight attendants were attentive and nice, and the food was very good! And the glasses are larger than on Lufthansa flights! I don’t want to have to ask for 15 glasses of water because their glasses are ridiculously small!

The food not that great. Did not like the fact that we could not purchase upgrade at the airport

We paid for business class, and my seat did not work at all. Each time I wanted to adjust the position, an attendant had to come to physically force the seat into its new position. They tried to fix it by fiddling with the electronics (military reset, for example), to no avail. Also, the food was just mediocre. We were at the end of a serving section, so they ran out of several choices. (This was on the flight from Los Angeles to Munich.)

The crew was the best I’ve ever encountered. Business class was spacious, immaculate, and very modern.

The plane was very clean. The bathroom was clean as well. The land crew were very polite and informative and helpful. They informed me that there is a long way and challenging to go from international terminal to national terminal and in addition to getting my suitcases and going through customs and dropping them again for my second leg of trip which was San Francisco to Los Angeles . I have left knee issue and had a recent fall with aching muscles all over, the land crew suggested wheelchair help for me, God bless her. If I did not have help, I could not make it to my last terminal. Thank you UNITED AIRLINE!

I like the service and the efficiency. I am lactose intolerant and the lactose intolerant meal in business class was not astounding. Also, the business class fully reclining seats are not that comfortable.

Food was great but they didn't clear my meal tray for 3 hours. You'd think they could check though the cabin now and then.

Everything you need to know for your flight from Porto to District of Columbia

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