PDX - IAD

$159 Find Cheap Flights from Portland to Washington Dulles Airport - Compare and Save

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 7/15. 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
$383
Typical prices: $555-$397
Frontier, Sun Country Air
Fri 7/3Mon 7/6
PDX - IAD • 1 stop
Cheapest non-stop
$447
Typical prices: $538-$437
United Airlines
Mon 7/20Mon 7/27
PDX - IAD • Non-stop
Top airlines
Cheapest • from $387 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with United Airlines. Average duration is 5h 02m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg $286 (round-trip)
Shortest trip • 7h 03m (one-way)
Insights
Insights
Insights
Insights
When to book
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
Cheapest • 31% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
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

Fri, Jul 3 - Mon, Jul 6
Multiple Airlines Logo
6:19 pm - 8:25 am
PDX
-
IAD
11h 06m
1 stop
Multiple Airlines Logo
6:25 pm - 10:43 pm
IAD
-
PDX
7h 18m
1 stop
$383Multiple Airlines
Mon, Jul 20 - Thu, Aug 27
Multiple Airlines Logo
5:49 pm - 8:20 am
PDX
-
IAD
11h 31m
1 stop
Multiple Airlines Logo
7:35 pm - 9:30 am
IAD
-
PDX
16h 55m
1 stop
$385Multiple Airlines
Fri, Aug 28 - Mon, Aug 31
Frontier Logo
6:19 pm - 7:50 am
PDX
-
IAD
10h 31m
1 stop
Frontier Logo
9:20 am - 5:24 pm
IAD
-
PDX
11h 04m
1 stop
$387Frontier
Fri, Sep 18 - Sat, Sep 26
Multiple Airlines Logo
12:38 pm - 2:09 pm
PDX
-
IAD
22h 31m
1 stop
Multiple Airlines Logo
7:00 am - 4:35 pm
IAD
-
PDX
12h 35m
2 stops
$389Multiple Airlines
Mon, Jul 20 - Fri, Jul 24
Frontier Logo
5:49 pm - 8:20 am
PDX
-
IAD
11h 31m
1 stop
Frontier Logo
9:50 am - 4:54 pm
IAD
-
PDX
10h 04m
1 stop
$390Frontier
Wed, Jul 22 - Sun, Jul 26
American Airlines Logo
11:41 pm - 11:07 am
PDX
-
IAD
8h 26m
1 stop
American Airlines Logo
7:31 pm - 12:55 am
IAD
-
PDX
8h 24m
1 stop
$392American Airlines
Fri, Jul 10 - Fri, Jul 17
Frontier Logo
5:49 pm - 8:20 am
PDX
-
IAD
11h 31m
1 stop
Frontier Logo
9:50 am - 4:54 pm
IAD
-
PDX
10h 04m
1 stop
$394Frontier
Fri, Aug 28 - Mon, Aug 31
Frontier Logo
12:26 pm - 10:16 am
PDX
-
IAD
18h 50m
2 stops
Frontier Logo
9:20 am - 5:24 pm
IAD
-
PDX
11h 04m
1 stop
$395Frontier
Thu, Jul 30 - Mon, Aug 3
Frontier Logo
6:49 pm - 8:20 am
PDX
-
IAD
10h 31m
1 stop
Frontier Logo
9:50 am - 4:54 pm
IAD
-
PDX
10h 04m
1 stop
$397Frontier
Tue, Sep 15 - Thu, Sep 24
Alaska Airlines Logo
5:41 pm - 5:40 am
PDX
-
IAD
8h 59m
1 stop
Alaska Airlines Logo
7:00 am - 1:37 pm
IAD
-
PDX
9h 37m
1 stop
$399Alaska 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.

How much is a round-trip flight from Portland to Washington, D.C. Dulles Intl Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Portland to Washington, D.C. Dulles Intl Airport departing in July.

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, Thursday 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 Monday, 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 $296 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is $567 and $497 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 $517, 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 25 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.
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on PDX

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.

Stefanie Waldek

Stefanie Waldek

Expert on IAD

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.

Good to know

Low seasonJanuary
Cheapest flight$159
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly and prices are also 6% 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 5 days, the lowest price for a flight from Portland to Washington, D.C. Dulles Intl Airport was $159 for a one-way ticket and $383 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?

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

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

    The Boeing 737 MAX 9 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., Delta or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Portland to Washington, D.C. are Delta and Alaska Airlines. With an average price for the route of $392 and an overall rating of 7.9, Delta is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $446 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 $227 or less one-way and $454 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

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

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.
7.9
Alaska AirlinesOverall score based on 12508 reviews
7.8Comfort
8.5Crew
7.0Food
7.0Entertainment
8.1Boarding
Airline reviews

Great trip. No complaints. Impressed with the crew’s response to various challenges pre-boarding.

10.0 ExcellentAnonymous, Jun 2026
PDX - OAK
Read more Alaska Airlines reviews

Great trip. No complaints. Impressed with the crew’s response to various challenges pre-boarding.

We were 35 minutes late because the caterer had not stocked the plane. Plane was fully loaded and ready to go 15 minutes before departure time. We sat there 35 minutes?

The seats are too small/crowded. It is frustrating to be forced to sit with someone who is overweight as they crown the other seat. Nothing against the person…just the airline companies who continue(over decades!)to reduce seat sizes. Americans are fat. Those of us who are not are tired of being compromised by the airline companies who don’t faces that fact and make adjustments. Maybe have “overweight seats”? Maybe give us a discount for being forced into an uncomfortable flight due to others overweightness? Please, make adjustments…be accountable. Thanks!

I flew standby with my two children and completely forgot it was Memorial Day weekend. We tried to fly from PDX to YVR. Unfortunately, after four attempts, we gave up and tried SEA instead after the holiday. The ground crew was very helpful, checking us in and accommodating us when we were finally able to get on a flight. The sad part was that they accidentally loaded one of my suitcases on the Vancouver flight without us during one of our attempts to get on a flight, even though it had a standby tag on it. I filed a report with baggage services, and thankfully, it was returned to PDX the following day. AS was in touch with us and updated us on the process of returning the luggage to the USA.

Internet was great. It was nice to watch a movie. The crew was very nice.

On this flight there wer only 25 people on board. So no one in 5 rows ahead of me and noone in 7 rows behind me. So very chill.

Considering my flight to Portland was in a broken chair that I had paid extra for, this one was great. So yeah, wonderful.

Some food or at least snacks need to be offered on long flights. I thought I had ordered food for my husband and I prior to the flight, but was told during the flight that I had not. Perhaps, if you must charge extra for food, let people order on board. We did get some food, which evidently others had decided they didn’t want onboard, but it wasn’t very good. We did like the adherence to takeoff and landing times, and the quick return of our luggage.

Our meal order was screwed up. We had to choose from basic boxes. I was not happy.

very nice blankets and comfortable seats. great service. Great flights.

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

It was great. The gate staff were very helpful in Portland when my son forgot his rolling bag and had to go back to get it just in time to make it on the plane. We really appreciate that. Great job!

Airline is not very senior friendly. Flights are late, forcing us to run to the connecting flight. Food is awful. Wish they would go back to pretzels and peanuts. During flight, pressurization isn’t quite right and all of our ears get plugged. Everything is nickel and dime, charging for boarding, seat selection and legroom. While a screen at the desk in the gate area says check your roll on bag now for free due to space limitation, the employee at the desk will not check the bag without a $100 fee. Insane.

Kayak could’ve posted the correct gate number. Almost missed my flight.

Slow boarding, limited food and drink portions. Bad delays and turbulence

there were two flight attendants that were up front...that were the best! They get KUDOs for making my trip only fantastic. Tell them Jeff said that!

OKay. I sat in the back of the plane and it was really loud between babies and little kids, and adults who.like to talk a lot and loudly most of the flight.

Flight coming out of Buffalo was delayed, so we had to be rescheduled on another flight from Baltimore to Phoenix which means we had a long layover and got home 3.5 hours late. Shuttle to parking stopped at 10pm, so we had to pay for an Uber to the parking lot and got charged an extra day of parking since it was after midnight. Not the best experience. Long day!

Was fine, delayed and feels like southwest is always late

I don't know why flying out of Sarasota requires two plane changes.

Five hour delays every hour, I wish it were all at once

Flight delayed four separate times. I’m now one hour hours late to landing.

worst flight ever from Delta, it got delayed and kept on delaying..

Should never have had to go to Detroit from Orlando back to Tennessee!

Got rerouted from a straight flight from Orlando to Atlanta to Knoxville to a flight from Orlando to Detroit to Knoxville! Seriously!! Flight delay out of Detroit! Long day for what should have been a pretty easy travel day!

Two delays on two separate planes with parts they could not easily find and replace.

Checkin was good, fllight ws good. Onlly complaint is lack of foot on 6 hour flight from Seattle to Boston. Snacks were flimsy - chips and cookies. could have offered something more substantial for such a long flight. I know you can buy food in airport but for the price you pay for a ticket, they should step up for the passengers.

Only beverages were offered to first class and I thought the flight attendant could have also served the Delta Comfort as well instead of sitting down and staring at her phone and walking past all of us to the back of the plane to charge her phone more. There was a complete lack of turbulence and was safe enough for flights attendant to walk around in the front of the plane, collect trash and serve a few people water and turn off the seat belt light. Also didn’t enforce people putting their seats into the upright position and allowed two passengers to remain reclined during landing. They seemed out to lunch completely. Usually my experience on Delta is much better.

Long story short, it was one of the better flight experiences I've had in some time when compared with other airlines.

Flight was great! This flight from Atlanta was even better than when I paid for Comfort from SNA to Atlanta.

Our flight was delayed 2.5 hours from Lisbon to DC so we missed our connection to Seattle that would have arrived at about 9 PM. The agent initially said we had to stay overnight in DC and there were no other options to put us on to get us to Seattle. While on board I discovered a flight via American he could have put us in but by the time we arrived in DC that was sold out. We were then put on a flight to San Francisco that was also delayed then arrived in San Francisco and our flight to Seattle was also delayed so we ended up not arriving until 2:15 am. Our son could not pick us up so we ended up having to pay over $100 to Uber home. This is the second trip with United that the flight has been delayed causing us to miss an evening in Las Vegas and we were given nothing.

MY FAMILY'S LUGGAGE WAS LOST FROM ROME TO BARI. I WAS THE ONLY ONE THAT RECEIVED MY LUGGAGE FROM ROME TO BARI. AFTER DEPLANING IN BARI, WE WASTED A LOT OF TIME AT BAG CLAIMS LOST AND FOUND REPORTING THE CLAIM AND PLEADING FOR THE BAGS TO BE DELIVERED THE NEXT DAY. WE WERE TOLD THAT IT TAKES 3 DAYS MINIMUM TO DELIVER. MY DAUGHTER AND MY GIRLFRIEND NEEDED THEIR PERSONAL THINGS AND WE WERE STAYING 3 HOURS AWAY FROM THE BARI AIRPORT. WE HAD TO DRIVE 3 HOURS TO THE AIRPORT TO COLLECT OUR LOST LUGGAGE THE NEXT DAY. WE ARE NOT HAPPY WITH THE EXPERIENCE

There were no facilities in the middle of the aircraft and premium economy was not allowed to use the business class facilities, and had to share the only two toilets at the back with economy. The upgrade to Premium was definitely not worth it

Our flight to Rome, Italy was cancelled the day of and we were never informed. We only found out because I was trying to get into my husbands account and called to get his account number. Had to pay more for worse seating on another airline.

The economy seat was much less comfortable for an international flight in terms of recline and moving space when food tray is expanded. Per entertainment, it would be amazing if I could connect my Bluetooth headset or ear phones to the entertainment screen. Or provide in-flight wifi to connect directly from my own device.

We were a little disappointed to not be able to complete check in online without uploading pics of passports. Also we have KTN's and they weren't on our boarding passes when we got to security. Had to trek back to counter to have them fix.

Excellent service in Polaris class IAD to ZRH. Arrived rested and well fed after the overnight flight.

It's a short hop. My carryon was checked at the gate, I didn't have to drag it all over the airport. Excellent wheelchair assist.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

Terrific in every way. On time, professional staff, multiple movie options to select, great food and drink.

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

Information on your arrival and departure airports