PDX - IAD

$153 Find Cheap Flights from Portland to Washington Dulles Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Dulles Intl departing on 1/11. 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
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C. Dulles Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland 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 Portland to Washington, D.C., as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$296
Overall average: $318
American Airlines
Tue 1/6Tue 1/20
PDX - IAD • 1 stop
Cheapest non-stop
$308
Typical prices: $468-$697
United Airlines
Tue 3/17Tue 3/24
PDX - IAD • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
PDX offers easy navigation with clear signage.
The Silver Line Metro connects IAD to downtown D.C.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
United Airlines
Cheapest • from $307 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 54% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 28% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Dulles Intl!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Portland to Dulles Intl (PDX-IAD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Dulles Intl 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 Portland to Dulles Intl

Tue, Jan 6 - Tue, Jan 20
American Airlines Logo
10:15 pm - 10:58 am
PDX
-
IAD
9h 43m1 stop
American Airlines Logo
1:08 pm - 8:24 pm
IAD
-
PDX
10h 16m1 stop
$296American Airlines
Tue, Mar 17 - Tue, Mar 24
Delta Logo
7:38 pm - 11:32 am
PDX
-
IAD
12h 54m2 stops
Delta Logo
12:12 pm - 8:59 pm
IAD
-
PDX
11h 47m2 stops
$298Delta
Tue, Jan 6 - Tue, Jan 20
American Airlines Logo
10:15 pm - 10:58 am
PDX
-
IAD
9h 43m1 stop
American Airlines Logo
11:34 am - 8:27 pm
IAD
-
PDX
11h 53m2 stops
$302American Airlines
Thu, Jan 1 - Tue, Jan 6
United Airlines Logo
10:52 pm - 6:50 am
PDX
-
IAD
4h 58mnonstop
United Airlines Logo
6:03 am - 12:18 pm
IAD
-
PDX
9h 15m1 stop
$307United Airlines
Tue, Mar 17 - Tue, Mar 24
United Airlines Logo
11:10 pm - 7:03 am
PDX
-
IAD
4h 53mnonstop
United Airlines Logo
5:45 pm - 8:40 pm
IAD
-
PDX
5h 55mnonstop
$308United Airlines
Fri, Jan 9 - Tue, Jan 13
Delta Logo
1:30 pm - 11:10 pm
PDX
-
IAD
6h 40m1 stop
Delta Logo
7:00 am - 12:46 pm
IAD
-
PDX
8h 46m1 stop
$312Delta
Thu, Mar 5 - Tue, Mar 10
Alaska Airlines Logo
9:26 pm - 5:27 pm
PDX
-
IAD
17h 01m1 stop
Alaska Airlines Logo
6:20 pm - 9:50 am
IAD
-
PDX
18h 30m1 stop
$316Alaska Airlines
Wed, Jan 14 - Fri, Jan 16
Southwest Logo
6:00 am - 4:50 pm
PDX
-
IAD
7h 50m1 stop
Southwest Logo
5:40 pm - 10:30 pm
IAD
-
PDX
7h 50m1 stop
$317Southwest
Fri, Mar 13 - Tue, Mar 17
United Airlines Logo
11:10 pm - 7:03 am
PDX
-
IAD
4h 53mnonstop
United Airlines Logo
6:03 pm - 12:44 am
IAD
-
PDX
9h 41m1 stop
$318United Airlines
Wed, Jan 14 - Mon, Jan 19
American Airlines Logo
5:14 am - 9:17 pm
PDX
-
IAD
13h 03m2 stops
American Airlines Logo
6:00 am - 1:21 pm
IAD
-
PDX
10h 21m1 stop
$322American Airlines
Booking Insights

KAYAK's insights & trends for Portland to Dulles Intl flights

Get data-powered insights and trends into flights from Portland to Dulles Intl 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 Portland to Washington Dulles Airport?

The average price of all round-trip flights from Portland to Washington, D.C. Dulles Intl Airport clicked on KAYAK for each day over the last 12 months.

For Portland to Washington Dulles Airport, Wednesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Washington Dulles Airport back to Portland, the best deals are generally found on Tuesday, with Sunday being the most expensive.

What is the cheapest month to fly from Portland to Washington, D.C. Dulles Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to Washington, D.C. Dulles Intl Airport, 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 Portland to Washington, D.C. Dulles Intl Airport is January, where tickets cost $318 (return) on average. On the other hand, the most expensive months are March and July, where the average cost of round-trip tickets is $542 and $516 respectively.

Can I save money by flying with a layover from Portland to Washington, D.C. Dulles Intl Airport?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $444, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from Portland to Washington, D.C. Dulles Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Portland to Washington, D.C. Dulles Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Portland to Washington, D.C. Dulles Intl Airport, you should book around 4 weeks before departure, which saves you about 54% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Expert advice

Expert advice for your flight from Portland to Dulles Intl

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airports
PDX

PDX offers easy navigation with a single main terminal and clear signage, making check-in and security a breeze.

IAD

The Silver Line Metro connects IAD to downtown D.C., offering a convenient 50-minute ride to the city center.

Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on PDX

Gabriel Leigh

Gabriel Leigh

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Stefanie Waldek

Stefanie Waldek

Expert on IAD

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more

Good to know

Low seasonJanuary
Cheapest flight$153
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly and prices are also 8% lower on average.
Flight from Portland to Washington Dulles Airport

When to book flights from Portland to Dulles Intl

Are your dates flexible? Find out the best times to travel from Portland to Dulles Intl 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 Portland to Washington Dulles Airport flights

  • What is the cheapest flight from Portland to Washington, D.C. Dulles Intl Airport?

    In the last 3 days, the lowest price for a flight from Portland to Washington, D.C. Dulles Intl Airport was $153 for a one-way ticket and $296 for a round-trip.

  • Do I need a passport to fly between Portland and Washington Dulles Airport?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airlines offer Wi-Fi service onboard planes from Portland to Washington Dulles Airport?

    All the following airlines offer inflight Wi-Fi service on the Portland to Washington Dulles Airport flight route: Alaska Airlines, Hawaiian Airlines, KLM, American Airlines, Delta, and JetBlue.

  • Which aircraft models fly most regularly from Portland to Washington Dulles Airport?

    The Boeing 737-800 Passenger/BBJ2 (winglets) is the aircraft model that flies most regularly on the Portland to Washington Dulles Airport flight route.

  • Which airline alliances offer flights from Portland to Washington Dulles Airport?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Portland and Washington Dulles Airport, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from Portland to Washington Dulles Airport?

    There are nonstop flights from Portland to Washington Dulles Airport on a daily basis.

  • Which is the best airline for flights from Portland to Washington, D.C., Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Portland to Washington, D.C. are Alaska Airlines and Delta. With an average price for the route of $442 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $370 and an overall rating of 7.9.

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

    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 Portland to Washington Dulles Airport.

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

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

    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 Dulles Airport with an airline and back to Portland with another airline. Booking your flights between Portland and IAD can sometimes prove cheaper using this method.

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

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

KAYAK’s top tips for finding a cheap flight from Portland to Washington, D.C. Dulles Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $238 or less one-way and $480 or less round-trip.

Prefer to fly direct from Portland to Washington Dulles Airport?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Portland to Washington, D.C. Dulles Intl.
Find which airlines fly direct from Portland Airport to Washington, D.C. Dulles Intl Airport, which days they fly and book direct flights.

Direct departures

Portland to Washington, D.C. Dulles Intl

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

Washington, D.C. Dulles Intl to Portland

Monday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Reviews of the top 4 airlines serving from Portland to Dulles Intl

 
See real verified KAYAK customer reviews for airlines flying from Portland 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 Portland to Dulles Intl? 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
Alaska AirlinesOverall score based on 11431 reviews
8.1Boarding
7.1Food
8.5Crew
7.0Entertainment
7.8Comfort
Airline reviews

Flight was delayed but still made it to Phoenix on time. Boarding went quickly, the flight was smooth.

8.0 ExcellentAnonymous, Dec 2025
PDX - PHX
Read more Alaska Airlines reviews

Flight was delayed but still made it to Phoenix on time. Boarding went quickly, the flight was smooth.

The food selections were not good, and entertainment was non existent.

I would have liked if the flight existed. To be fair the federal government canceled it. But, since it WAS canceled, I would have liked it if Alaska Airlines had moved a finger to assist me rather then abandoning me with my luggage, unable to check it, for 14 hours in Portland. So federal regulations forbid them from storing my bag? Then at least help me find storage or SOMETHING.

It was all good, no delays which was a worry. All great

It was a pleasant experience. Considering we paid over $3000 for first class there really wasn’t anything special about first class. All the seats looked the same and everyone got the same great customer service. The only thing that was different between first class and couch was the drinks and the meal. We wouldn’t waste that much $ on first class on that plane again.

This was more with the third party booking through Kayak but my KTN for Pre-TSA, even though I entered it, wasn't assigned to my ticket when I got to the airport. I had to go through regular security. Also the Alaska app had trouble loading my ticket in the first place and I had to ask for it to be printed. Alaska Airlines was great but wanted you to know about this hiccup in the ticketing interface.

Process of checking bag, boarding, etc. was all very quick, easy, and streamlined. Only problem I had was the seating: very cramped and uncomfortable, but I suppose that’s the perils of coach. Thankfully it wasn’t a super long flight so it didn’t ruin the experience overall.

The boarding was confusing because the PA system at PDX was so quiet you couldn’t hear anything being said . The seats were uncomfortable. The food was pretty bad and I normally don’t mind airplane food. The flight attendants were not friendly. I learned upon check in that Hawaiian airlines had reassigned our seats of the second leg of the trip. I had confirmed and paid for special seats but they put me and my companion on standard seats in different rows. Hawaiian also did the same on my return flight after the flight times had changed. I happened to go online to check my reservation and saw the flight had changed. I gad received no notice. I saw that my confirmed seats that I had paid extra were gone. After much back and forth with the airlines they refused to correct their error. I showed them confirmation documents of my seat reservation and receipt of payment but they refused to correct the seat change or reimburse me. I had to pay $200 again to reserve the original seats. Shameful and manipulative. They basically held me hostage. If I wanted to be in that flight I had to pay up.

When I bought my tickets I up great my seats for extra $104 each seats 8A and 8B in the way back from Portland to Palm Springs they gave me the seats 15. I thought it was for round trip same seats . So I was very disappointed ☹️

One disappointment. There was a gate change from B8 to B10, they had announced it maybe 20 minutes before the boarding time, possibly less. I didn’t hear the announcement as I was listening to music on my head phones at B8. At the boarding time, I got up and asked the gal at the B8 boarding desk, why the destination sign had not changed and if the flight was delayed as there was no plane behind her through the window, she said that perhaps the flight was delayed and the screen will probably update in -5 minutes ( she apparently didn’t know the boarding gate was changed ( 2 down from our location) I put my headphones on and went back to sit down . Just before the B10 door closed, I got a phone call asking me if I was still taking the flight, I said. “Yes” but I was at the gate stated on my ticket B8, then I was informed of the gate change, I got up and ran to the gate, and down the hallway to the jet ramp. I was the last to board!! Very frustrating . I was shocked that I got no emails or text messages from Alaska informing me of a last minute change!!

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

Airline travel is always too cramped to really be pleasant, but the cabin crew on this flight did a pretty good job of making up for it by putting on some music during boarding and sprinkling a few funny remarks into the safety briefing and announcements, and just generally being friendly and helpful. It definitely reminded me of why I prefer the in-flight experience on Southwest!

No delays and arrived to destination 30 min early. Staff was super friendly.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

It was rough. The staff was unprofessional, the choice of on board drinks terrible, it was cramped in space at every airport, they always ran out of overhead bin space so they pressured people to check bags for free or we couldn’t leave on the plane— so I did check my bag to help, and they nearly lost my bag. My bag did not arrive on the luggage belt, another man on my flight and I had to waste our time going to the baggage office to search for our bags. I would only fly southwest again if it was my last choice. Also, my flights were consistently delayed over and over again— at one point they straight up told us we were waiting for the pilot to arrive.

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

Had to get off plane from prior flight even though I had to reboard same plane to continue to my final destination.

Everything a cheap airline should be at normal airline rates.

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

The food is terrible. The staff is wonderful. Comfort is good.

Left on time, a bit delayed due to headwinds most of the trip.

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

Good seats in Main cabin, excellent service and excellent landing

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

Staff was exceptional! Everyone was kind, professional and friendly making the trip very pleasant. Thank you!

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

We had a lot of really rough weather but that was not Delta's fault. Pilot was amazing.

The food is terrible. The same pasta or chicken with bad taste and presentation

It was probably one of the worst flights I’ve been on. The restrooms were never cleaned or stocked. The food was very subpar, and i usually enjoy airline food, so I was disappointed. It was just all around a bad experience. The only saving grace was the flight attendants.

The only downside was my cell phone charger wouldn’t work in the charging port but everyone else’s would work in them all. My cell phone cable works fine in my hotel room in Frankfurt.

Great crew, excellent landing, good food. Over all great experience. Thank you!

One bag is incorrect and not acceptable for an international flight. The food was not just good. I won't fly with them again.

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

Crew was dismissive. Snacks and refills not offered. Poor business class experience. Bed not comfortable compared to Emirates or BA.

Flight was delayed for 5 hours because crew didn’t have enough time to rest - this seems like it could have been avoided with better scheduling. Food was not good.

IAD with the archaic people movers is just a place to be avoided.

Overall, it was good. I was seating next to a wonderful lady and did not notice how time flew. Thanks

Everything you need to know for your flight from Portland to Dulles Intl

Information on your arrival and departure airports