$337 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 4/12. 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, 0 bags

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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Flight Deals

Book Cheap Porto to District of Columbia Plane Tickets

 
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

Thu, Feb 12 - Wed, Feb 25
Lufthansa Logo
6:00 am - 2:35 pm
OPO
-
IAD
13h 35m
1 stop
Lufthansa Logo
10:00 pm - 3:25 pm
IAD
-
OPO
12h 25m
1 stop
$440Lufthansa
Thu, Feb 12 - Wed, Feb 25
Lufthansa Logo
6:00 am - 2:35 pm
OPO
-
IAD
13h 35m
1 stop
Lufthansa Logo
10:00 pm - 3:25 pm
IAD
-
OPO
12h 25m
1 stop
$441Lufthansa
Tue, Apr 21 - Wed, Apr 29
TAP AIR PORTUGAL Logo
9:00 am - 3:05 pm
OPO
-
IAD
11h 05m
1 stop
TAP AIR PORTUGAL Logo
10:35 pm - 7:00 pm
IAD
-
OPO
15h 25m
1 stop
$445TAP AIR PORTUGAL
Tue, Apr 21 - Wed, Apr 29
TAP AIR PORTUGAL Logo
5:05 am - 3:05 pm
OPO
-
IAD
15h 00m
1 stop
TAP AIR PORTUGAL Logo
10:35 pm - 8:25 pm
IAD
-
OPO
16h 50m
1 stop
$446TAP AIR PORTUGAL
Thu, Feb 12 - Mon, Feb 16
Multiple Airlines Logo
6:00 am - 3:50 pm
OPO
-
IAD
14h 50m
1 stop
Multiple Airlines Logo
5:45 pm - 11:15 am
IAD
-
OPO
12h 30m
1 stop
$449Multiple Airlines
Thu, Feb 12 - Wed, Feb 25
United Airlines Logo
6:00 am - 3:50 pm
OPO
-
IAD
14h 50m
1 stop
United Airlines Logo
5:34 pm - 9:30 am
IAD
-
OPO
10h 56m
1 stop
$458United Airlines
Wed, Feb 25 - Wed, Mar 4
Multiple Airlines Logo
6:00 am - 3:50 pm
OPO
-
IAD
14h 50m
1 stop
Multiple Airlines Logo
5:45 pm - 11:15 am
IAD
-
OPO
12h 30m
1 stop
$459Multiple Airlines
Sat, Feb 14 - Sat, Feb 28
United Airlines Logo
6:00 am - 8:15 pm
OPO
-
IAD
19h 15m
1 stop
United Airlines Logo
8:36 am - 9:30 am
IAD
-
OPO
19h 54m
1 stop
$460United Airlines
Thu, Feb 12 - Wed, Feb 25
Delta Logo
5:00 am - 7:56 pm
OPO
-
DCA
19h 56m
2 stops
Delta Logo
12:05 pm - 10:30 am
DCA
-
OPO
17h 25m
2 stops
$470Delta
Thu, Feb 12 - Wed, Feb 25
Delta Logo
5:00 am - 6:29 pm
OPO
-
DCA
18h 29m
2 stops
Delta Logo
2:35 pm - 10:30 am
DCA
-
OPO
14h 55m
2 stops
$477Delta
Booking Insights

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.

Which airlines provide the cheapest flights from Porto to District of Columbia?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Porto to District of Columbia were found on Lufthansa ($440) and TAP AIR PORTUGAL ($441).

Good to know

Low seasonJune
Cheapest flight$337
Best time to beat the crowds with an average 12% drop in price.
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.

Reviews of the top airline flying 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.
7.1
TAP AIR PORTUGALOverall score based on 2130 reviews
7.8Crew
6.3Entertainment
7.0Boarding
6.2Food
7.1Comfort
Airline reviews

this flight was awful from pre-boarding to on the plane. There needs to be more coordination between TAP and My Way. We were in first class and I am handicapped. BY the time we got on the plane there was no place for our baggage and the crew did not handle the situation well. They gave us an argument and said that we'd have to have it checked. Then, after I complained they moved some people's bags to put our small carry ons several seats back of our seats which were in Row 4.

4.0 OkayAnonymous, Jan 2026
LIS - FAO
Read more TAP AIR PORTUGAL reviews

this flight was awful from pre-boarding to on the plane. There needs to be more coordination between TAP and My Way. We were in first class and I am handicapped. BY the time we got on the plane there was no place for our baggage and the crew did not handle the situation well. They gave us an argument and said that we'd have to have it checked. Then, after I complained they moved some people's bags to put our small carry ons several seats back of our seats which were in Row 4.

Bad. They gave me a voucher for food to use at the airport but didn’t have time since I had to catch the other plane. No refunds and lack of communication

Negative. Food was awful, seat broken, flight was late, baggage lost and damaged

The ground staff did not load my bag onto the plane and despite me watching from the bus that my bag is not being loaded and taken back on the cart to the terminal, I pointed out to the staff and ge laughed upon checking my tag and knowing they made a mistake. Instead of calling the cart back and loading it he said we can’t fo anything and you should file a report upon landing at RAK. I told them my stay there is short and i needed my bag as it had everything I needed but no avail. Even the pilot was informed, staff of the plane was aware but all in don’t care mode. Upon arriving at Marrakech RAK, i filed a report and being told it might come in next flight tomorrow and we don’t provide delivery service, you must come and pick it up. If it doesn’t arrive on time then it will be sent to your home in the US. Unbelievable stress and inconvenience that could have been easily prevented by the ground staff.

The cabin crew were curt, not with me, but observed with other passengers. They were unduly rude and it was unprovoked and when they realized they were wrong, they made no attempt to apologize for their own confusion.

I was disappointed of the crew, not friendly and attentive. Delay one way for fuel leakage and the plane is so hot. Not that great all around but I’m glad I experienced it so now know better.

Flew Business class and did not like anything, flight attendants were rude and not helpful. Food was of poor quality and I did not eat meals.

Wonderful just hope the had more direct flights to Boston

Boarding process was fast and efficient. Short flight but on time and well organized. I would certainly fly TAP again.

Very long line at the gate, moved slowly. I had expected that boarding a flagship A330neo would be with a jetway directly at the gate, and not a long bus ride to the airplane.

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

Information on your arrival and departure airports