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Find cheap flights from Washington Dulles Airport to Portugal from $307

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Portugal departing on 10/14. 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
Sat 6/15
Sat 6/22

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Best Portugal Flight Deals

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

Lisbon
Lisbon1 stop$370
Porto
Porto1 stop$713
Ponta Delgada
Ponta Delgada1 stop$981
Funchal
Funchal1 stop$1,071
Faro
Faro1 stop$650
Lajes
Lajes1 stop$817
Pico Island
Pico Island3 stops$1,096
Horta
Horta1 stop$1,445
Porto Santo
Porto Santo1 stop$916

Good to know

Low season

January

High season

September

Cheapest flight

$307
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly with an average 6% increase in price.
Flight from Washington Dulles Airport to Lisbon

FAQs - booking Portugal flights

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Portugal?

    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 Washington Dulles Airport to Portugal.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Portugal?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portugal from Washington Dulles Airport 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 Washington Dulles Airport to Portugal?

    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 Portugal with an airline and back to Washington Dulles Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Portugal?

    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 Portugal from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Portugal

  • Looking for a cheap flight? 25% of our users found tickets from Washington Dulles Airport to the following destinations at these prices or less: Lisbon $485 one-way - $725 round-trip
  • Morning departure is around 17% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Dulles Intl to Portugal

 
Need help choosing which airline to fly with from Dulles Intl to Portugal? 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.
8.0
DeltaOverall score based on 10673 reviews
8.6Crew
7.4Food
8.2Boarding
7.9Comfort
8.0Entertainment
Airline reviews

5-hour delay due to storms in Tanoa and airspace restricted by Miami traffic controllers.

6.0 GoodGary, May 2024MSP - TPA
Read more about Delta reviews

5-hour delay due to storms in Tanoa and airspace restricted by Miami traffic controllers.

A regional sized plane was used for a cross country flight with no overhead bin space. I had to "pink check" my laptop and my medications. I was NOT pleased!!!!

Absolutely nothing flight was cancelled and delayed for 2 days. Barely a heads up I want a full refund

The plane from SNA wouldn’t start after 5 tries. The team gave me an option of flying direct from LAX and giving me a Lyft ride there! Perfect!

Best airline! Always friendly and welcoming. Skyclub was great and loved the fast free wifi on board. I also love that you can pre-order your meal on the app!

Atlanta boarding crew at gate were filled with arrogance and were disrespectful. In flight crew showed indifference to the needs of passengers. This is about the flight from ATL to BDL.

The plane was FREEZING SEATS UNCOMFORTABLE Otherwise smooth Thank you

Boarding was chaotic. I didn’t finish dinner because I went to bed early. Breakfast omelet was overcooked and tasteless but croissant was better than usual. Plane was dirty—crumbs in every seam and lavatory was poorly maintained (paint peeling, etc.) and toilet paper had not been refreshed before takeoff. No cubby for storage in first and seat was narrow.

Boarding was somewhat chaotic. Unable to evaluate crew or food/drink because captain kept them seated due to turbulence. Have no idea if entertainment was offered.

West Jet has a horrible boarding process and the seats have no cushion.

We ended up with seats in the very back. So they did not recline. Have no idea why, we reserved and checked in very early. The isles were very narrow and the seats had very little leg room. But they did give us water, and a snack.

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

Food was terrible Not many options Stewards dont care Delay

The ride was good but no food ot entertainment hence, it was just over an hour flight.

they made me check my carryon. There was space in the overhead bins.

The plane was delayed 2 hours. The wifi did not work. The seat in first class was not comfortable because the bottom felt like it lost all of its padding. And I did not like when the flight attendant made me wait at my seat to use the bathroom and didn't tell me why. If there were too many people using the 1st Class bathroom, she should have told me to go in the back, coach bathrooms. I guess I have to feel fortunate that they found 2 local pilots to still fly the plane tonight after the original pilots ended up at an airport 60 miles away due to high winds.

The crew were really great, but the 4 hour delay in small chunks was the worst.

Every experience was good except for the lack of comfort in those economy seats. I never had knee pain until that flight. Those seats are uncomfortable.

I bought internet for the flight. Don’t waste your money. I wasn’t able to download a 1 Mb file from Google Docs during a 3-4 hr period. You can only use WhatsApp and email if you are willing to wait.

Just a crappy airline. The same every time. You feel you are a cow on a farm. You are being being whipped and pulled.

Seats comfortable on economy plus and attendants very helpful. Food was ok. Bathrooms needed servicing.

Original flight was cancelled - After waiting 2 hours for new take-off times. Then had to stand in line for 3 hours, ending at 2:30 am - to be told, " No hotel rooms anywhere in Dallas". No way for me to get any rest at DFW at that time of night.

I liked the friendly crew and desk staff, all very helpful. I was surprised and a little annoyed on my outbound flight from LGW to MCO as I had prepaid and booked my seat, which was all correct at check in on my boarding pass. when I got on the plane someone was in my seat ! I was moved to another seat. The food choice is quite limited and I feel that an option of a muffin for breakfast snack would be welcomed, not everyone wants egg or bacon wrap. The choice of entertainment is good, plenty to keep you busy on a long haul flight. I liked the option offered to have the cabin bag checked into the hold, it saved me as an older, lone traveller lifting my case into the overhead locker or finding there was no space.

Boarding process was chaotic and disorganized. The plane needs updating in the interior. Things are broken, worn out, and dated

good service from crew. Before the would have an option between cookies or nuts as snacks.. Now, there are only cookies. too bad. People who can not have sugar don't have a choice.

Fast check in, easy to navigate, crew were very good, the plane was delayed due to a previous flight and I found the cleanliness a little lacking but overall it was fine

I would not fly with BA again. Packed in like sardines, constant request to turn down air conditioning due to freezing cold for hours and the food was pretty to look at but tasteless!

My wife and I paid for seat selection to be together. My wife and I were on separate rows and the excuse they gave was they changed the plane. Also, I have celiac and asked for a gluten free meal in the ticket profile which they did not have.

I’m hoping for WiFi included. Everything else was very good

An average flight experience. For our transatlantic portion, they provided a main meal and two snacks. However, the food was not very tasty and the drinks far too small and infrequent for such a long flight. The regrettable part of the flight was that the toilets were extremely filthy. I feel this is unacceptable.

Great airline, new, comfortable and quiet planes. Plenty of leg room and state of the art entertainment system. The big downside is the connection in Lisbon. The airport is small and a bus is needed from the plane to the terminal. Is a mess, takes a lot of time, nobody gives an explanation, boarding zones are not honored, etc.

I thought Miami's airport was very disorganized during the Boarding.

Very efficient boarding - other airlines could learn from them. Friendly, efficient crew. Red eye flight, so dinner meal was irrelevant. Breakfast could have been more substantial. Seats reasonably comfy.

People seated in exit rows should have designated overhead space

I have been flying internationally for most of like. My first trip with TAP- wonderful! I look forward to flying with them more frequently in the future!

Larger seats on this plane made the ride reasonably comfortable. Our next flight, from Lisbon to Copenhagen, was inconsiderately tight and stressful. The seats were smaller, space between rows was very limited (no button or mechanism to even slightly incline anyone’s seat), and leg-cramping under the seat in front. Just like sardines in a can. Really felt for all the tall Danes on the flight. Their knees were pressed against the seat in front throughout the flight.

Flight was 2+ hrs late boarding. Delay updates were nonexistent. Boarding Gate change was by word of mouth.

The plane was modern and clean. TAP staff at the airport as well as the flight crew were professional, friendly, and helpful. Overall, a great experience.

The airline made last minute changes to our business class seats splitting our family of 4 with young children who had pre-booked a row of 4 seats. The seat was also dirty and sticky. Our pre-ordered child meals were also not available. :(

Awful experience all around, misleading booking led to disgraceful baggage charge at gate. Tiny uncomfortable seats with little drinks served in small paper cups filled halfway. Difficult to use bathrooms the whole flight and now on the way back we’re stuck in Lisbon a day later because of a diversion on our connecting flight, I will never fly this airline again.

Second time I took this flight, and they lost my luggage both times. Waiting for my suitcase now, last time it took two days to get it back.

Everything could be better. The plain was in Orlando for 3 hours prior to boarding. After boarding all the passengers they found out that plane has a mechanical problem. After an hour the problem was solved, the pilot comes on and states, (We have to go back to the gate and take on more fuel!) Are you kidding me???? Who they have for pilots, Boy scouts?? I barely made my connecting flight to Vienna, but my suitcase did not. I'm still waiting for it, in Gyor, Hungary. Am I having fun yet?? Other passenger were in the same binned. I travelled all over the world both for business and pleasure with all types of airlines. By far of all the carriers I travelled with, Discover is the worst. I'm contemplating to bight the bullet and go back to the US with a different carrier. For International flights, the seats are made for little people. The person in front of me had his seat reclined the whole way, I felt like he was sitting in my lap. For closing, I would not let my dog travel with Discover, yet alone recommend it to an other person. Does it sound like I'm frustrated, Think about having to travel back to the US with them. I'm sure I'll not hear back from you, because nobody wants to hear about bad news, but with all the hype Discover puts out there about their services, nothing could be further from the truth. Joseph A. Nagy

Only problem we experienced was not anything to do with Lufthansa. When changing planes in Frankfurt we spent over an hour on passport control line. Lufthansa did a marvelous job on everything from keeping me informed via texts, to terrific cabin crew.

Bordón could be bettet if the company say before boarding the order of the different groups.

Checked in is easy and it was a smooth flight from LAX to Munich

There is no recline on flight from DFW to FRA. Middle eastern airways provide better recline option for the same class. FRA to Bangalore has better recline option. I bid 100$ for premium economy, my request was declined. But staff handled it without issues.

The Lufthansa part was wonderful. The short connection flight was not.

German crew were very kind. Food was okay but can be better, especially bread was not good, Garbage collection was very poor.

Awful Terrible staff poor communication Flight delayed for an hour with no apology or explanation and no help re missing connecting flight. Resulted in a 7 hour layover at Munich waiting for another connecting flight. Only 15 euros refreshment voucher given. Will not fly Lufthansa again

Both flights were late for what appeared to be the airline’s not having the planes ready. Arrived over 6 hours late.

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

Recent round-trip flight deals

10/13Sun
1 stopPLAY
20h 30mIAD-LIS
10/21Mon
1 stopPLAY
25h 10mLIS-IAD
$370
11/3Sun
1 stopPLAY
21h 10mIAD-LIS
11/11Mon
1 stopPLAY
24h 40mLIS-IAD
$381
11/3Sun
1 stopPLAY
21h 10mIAD-LIS
11/11Mon
1 stopPLAY
24h 40mLIS-IAD
$382
11/3Sun
nonstopTAP AIR PORTUGAL
7h 05mIAD-LIS
11/11Mon
nonstopTAP AIR PORTUGAL
8h 45mLIS-IAD
$478
10/17Thu
nonstopTAP AIR PORTUGAL
7h 15mIAD-LIS
10/22Tue
nonstopTAP AIR PORTUGAL
8h 20mLIS-IAD
$480
11/6Wed
1 stopLufthansa
20h 10mIAD-LIS
11/11Mon
1 stopLufthansa
15h 50mLIS-IAD
$648
11/10Sun
nonstopUnited Airlines
7h 20mIAD-LIS
11/20Wed
nonstopUnited Airlines
8h 20mLIS-IAD
$651
11/3Sun
nonstopUnited Airlines
7h 20mIAD-LIS
11/14Thu
1 stopUnited Airlines
15h 50mLIS-IAD
$655
6/25Tue
1 stopLufthansa
13h 40mIAD-FAO
9/15Sun
1 stopLufthansa
34h 35mFAO-IAD
$968
7/30Tue
1 stopIberia
16h 30mIAD-FNC
8/7Wed
2 stopsIberia
25h 45mFNC-IAD
$1,720

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Recent one-way flight deals

10/14Mon
2 stops
19h 45mIAD-LIS
$307
6/30Sun
3 stops
47h 45mIAD-LIS
$313
9/30Mon
2 stops
18h 35mIAD-LIS
$321
10/6Sun
nonstopTAP AIR PORTUGAL
7h 15mIAD-LIS
$377
9/23Mon
nonstopTAP AIR PORTUGAL
7h 15mIAD-LIS
$378
9/23Mon
2 stopsIberia
27h 50mIAD-OPO
$511
11/4Mon
1 stopUnited Airlines
9h 50mIAD-LIS
$627
11/7Thu
nonstopUnited Airlines
7h 20mIAD-LIS
$635
10/1Tue
2 stopsIberia
16h 20mIAD-LIS
$676
5/25Sat
2 stopsDelta
17h 31mIAD-OPO
$979

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Last minute flights from Dulles Intl to Portugal

Last minute flight, train and bus deals

5/21Tue
multi-stopKLM
16h 50mIAD-OPO
5/28Tue
multi-stopKLM
16h 00mOPO-IAD
$838
5/21Tue
multi-stopDelta
16h 50mIAD-OPO
5/28Tue
multi-stopDelta
17h 21mOPO-IAD
$848
5/18Sat
multi-stop
33h 00mIAD-LIS
5/22Wed
multi-stop
17h 40mLIS-IAD
$861
5/18Sat
nonstopTAP AIR PORTUGAL
7h 15mIAD-LIS
5/22Wed
nonstopTAP AIR PORTUGAL
8h 20mLIS-IAD
$1,021
5/18Sat
nonstopTAP AIR PORTUGAL
7h 15mIAD-LIS
5/24Fri
nonstopTAP AIR PORTUGAL
8h 20mLIS-IAD
$1,045
5/17Fri
multi-stopRoyal Air Maroc
9h 55mIAD-LIS
5/20Mon
multi-stopRoyal Air Maroc
11h 00mLIS-IAD
$1,114
5/17Fri
multi-stopRoyal Air Maroc
16h 30mIAD-LIS
5/19Sun
multi-stopRoyal Air Maroc
29h 40mLIS-IAD
$1,149
5/17Fri
multi-stopUnited Airlines
11h 16mIAD-OPO
5/20Mon
multi-stopUnited Airlines
23h 12mOPO-IAD
$1,211
5/17Fri
multi-stopLufthansa
15h 02mIAD-FAO
5/20Mon
multi-stopLufthansa
29h 40mFAO-IAD
$1,367
5/17Fri
multi-stopLufthansa
15h 02mIAD-FAO
5/20Mon
multi-stopLufthansa
26h 35mFAO-IAD
$1,386

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Washington Dulles Airport - Portugal Flights

Departure:

Washington Dulles Airport (IAD)United States

Return flight deals:

Portugal - Washington Dulles Airport

Cabin classes:

$5,346
$2,430
$1,571
$485