PDX - IAD

$190 Find Cheap Flights from Portland to Washington Dulles Airport - Compare and Save

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Everything you should know

Cheapest round-trip
$349
Typical prices: $422-$648
Multiple Airlines
Tue 12/11Sun 12/16
PDX - IAD • 1 stop
Cheapest non-stop
$477
Typical prices: $442-$642
United Airlines
Tue 12/25Sun 12/30
PDX - IAD • Non-stop
Nonstop flights
Every day
You can fly direct with United Airlines. Average duration is 4h 53m
Direct flights
+1
Direct flights
+1
When to book
24 weeks
in advance
Our data shows that travelers who book at least 24 weeks in advance save around 65% compared to booking last minute.
Insights
Insights
When to travel
February
Cheapest • 35% price drop
April
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Las Vegas Harry Reid Intl (LAS)
Cheapest • Avg $363 (round-trip)
Minneapolis St Paul (MSP)
Shortest trip • 7h 16m (one-way)
Insights
Insights
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We hope you love your trip to Washington, D.C. Dulles Intl Airport!
Flight Deals
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Expert advice
Flight Deals

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

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to Dulles Intl

Sat, Dec 19 - Wed, Dec 30
Frontier Logo
10:06 pm - 6:07 amPDX  Portland-IAD Washington, D.C. Dulles Intl
29h 01m1 stop Las Vegas Harry Reid Intl
Frontier Logo
10:59 pm - 12:09 pmIAD  Washington, D.C. Dulles Intl-PDX Portland
16h 10m2 stops Atlanta Hartsfield-Jackson Denver Intl
$359Frontier
Fri, Dec 11 - Sun, Dec 20
Multiple Airlines Logo
5:09 pm - 1:09 pmPDX  Portland-IAD Washington, D.C. Dulles Intl
17h 00m1 stop Provo
Multiple Airlines Logo
10:59 pm - 9:33 pmIAD  Washington, D.C. Dulles Intl-PDX Portland
49h 34m2 stops Atlanta Hartsfield-Jackson Las Vegas Harry Reid Intl
$362Multiple Airlines
Fri, Dec 11 - Sun, Dec 20
Multiple Airlines Logo
5:09 pm - 1:09 pmPDX  Portland-IAD Washington, D.C. Dulles Intl
17h 00m1 stop Provo
Multiple Airlines Logo
10:59 pm - 9:33 pmIAD  Washington, D.C. Dulles Intl-PDX Portland
49h 34m2 stops Atlanta Hartsfield-Jackson Las Vegas Harry Reid Intl
$364Multiple Airlines
Wed, Jan 27 - Tue, Feb 2
Alaska Airlines Logo
9:30 pm - 4:27 pmPDX  Portland-IAD Washington, D.C. Dulles Intl
15h 57m2 stops Boise Air Term. Gowen Fld Seattle/Tacoma Intl
Alaska Airlines Logo
5:30 pm - 6:20 amIAD  Washington, D.C. Dulles Intl-PDX Portland
15h 50m2 stops Seattle/Tacoma Intl Eugene
$421Alaska Airlines
Tue, Dec 8 - Mon, Dec 14
Alaska Airlines Logo
7:15 am - 4:15 pmPDX  Portland-IAD Washington, D.C. Dulles Intl
30h 00m2 stops Boise Air Term. Gowen Fld Seattle/Tacoma Intl
Alaska Airlines Logo
7:00 am - 9:27 amIAD  Washington, D.C. Dulles Intl-PDX Portland
29h 27m2 stops Seattle/Tacoma Intl San Jose
$428Alaska Airlines
Wed, Feb 3 - Mon, Feb 8
Alaska Airlines Logo
5:55 pm - 5:50 pmPDX  Portland-IAD Washington, D.C. Dulles Intl
20h 55m2 stops San Jose San Diego
Alaska Airlines Logo
5:30 pm - 1:48 pmIAD  Washington, D.C. Dulles Intl-PDX Portland
23h 18m2 stops Seattle/Tacoma Intl Boise Air Term. Gowen Fld
$428Alaska Airlines
Wed, Dec 30 - Thu, Dec 31
United Airlines Logo
11:50 pm - 2:12 pmPDX  Portland-IAD Washington, D.C. Dulles Intl
11h 22m1 stop Chicago O'Hare Intl
United Airlines Logo
5:33 pm - 8:37 pmIAD  Washington, D.C. Dulles Intl-PDX Portland
6h 04mnonstop
$477United Airlines
Fri, Dec 25 - Wed, Dec 30
United Airlines Logo
11:42 pm - 7:35 amPDX  Portland-IAD Washington, D.C. Dulles Intl
4h 53mnonstop
United Airlines Logo
5:33 pm - 8:37 pmIAD  Washington, D.C. Dulles Intl-PDX Portland
6h 04mnonstop
$477United Airlines
Tue, Dec 15 - Sun, Dec 20
Delta Logo
6:35 am - 8:11 pmPDX  Portland-IAD Washington, D.C. Dulles Intl
10h 36m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:00 am - 10:42 amIAD  Washington, D.C. Dulles Intl-PDX Portland
7h 42m1 stop Detroit Metropolitan Wayne County
$480Delta
Mon, Nov 16 - Thu, Nov 19
Delta Logo
11:10 pm - 11:37 amPDX  Portland-IAD Washington, D.C. Dulles Intl
9h 27m1 stop Atlanta Hartsfield-Jackson
Delta Logo
8:05 am - 1:14 pmIAD  Washington, D.C. Dulles Intl-PDX Portland
8h 09m1 stop Atlanta Hartsfield-Jackson
$497Delta
Booking Insights

Price, demand and travel trends for Portland to Washington, D.C. Dulles Intl Airport flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

What's the cheapest day of the week to fly from Portland to Washington, D.C. Dulles Intl Airport?

Based on deals KAYAK users found in the last 12 months, Friday is the cheapest day of the week to fly from Portland to Washington, D.C. Dulles Intl Airport. It’s 9% cheaper than the average day, while Monday is the most expensive, with prices 15% higher.

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

•February is the cheapest month to fly from Portland to Washington, D.C. Dulles Intl Airport at $337 round-trip.
•June ($578) and December ($567) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 71% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Portland to Washington, D.C. Dulles Intl Airport the cheapest?

Flights from Portland to Washington, D.C. Dulles Intl Airport are cheapest 24 weeks before departure. Booking in this window typically costs about 65% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Expert advice

Expert advice for your flight from Portland to Dulles Intl

 
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.

Read more
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.

Read more

Key details for Portland to Washington, D.C. Dulles Intl Airport flights

Low season

January

Cheapest flight

$190
Beat the crowds with an average 66% drop in travelers.
The most popular month to fly with an average 53% increase in travelers.
One-way flight from Portland to Washington, D.C. Dulles Intl 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

Your Portland to Washington, D.C. Dulles Intl Airport flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What are the earliest and latest flights from Portland to Washington, D.C. Dulles Intl Airport?

    These are the earliest and latest flight times available from Portland to Washington, D.C. Dulles Intl Airport:

    • Earliest: departs at 8:30 am and lands at 1:23 pm
    • Latest: departs at 11:42 pm and lands at 4:35 am.

    The flight takes about 4h 53m.

  • What cabin classes can I book on flights from Portland to Washington, D.C. Dulles Intl Airport?

    Two cabin classes are available on flights from Portland to Washington, D.C. Dulles Intl Airport:

    • Economy Class
    • First Class

  • How long is a flight from Portland to Washington, D.C. Dulles Intl Airport?

    A nonstop flight from Portland to Washington, D.C. Dulles Intl Airport takes 4h 53m, covering 2,320 miles.

  • Do I need a passport to fly from Portland to Washington, D.C. Dulles Intl Airport?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • How much should I expect to pay for a Portland to Washington, D.C. Dulles Intl Airport flight?

    Round-trip flights from Portland to Washington, D.C. Dulles Intl Airport range from $422 to $648, with an average of $515 over the past 12 months. Anything below $422 counts as a good deal.

  • How expensive are last-minute Portland to Washington, D.C. Dulles Intl Airport flights?

    Last-minute fares on this route (booked within two weeks of departure) run 81% above the $515 route average. Book 24 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from Portland to Washington, D.C. Dulles Intl Airport?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $363 round-trip via Las Vegas Harry Reid Intl (LAS), compared to $525 for nonstop.

  • What is the standard checked-bag allowance on flights from Portland to Washington, D.C. Dulles Intl Airport?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$80 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from Portland to Washington, D.C. Dulles Intl Airport?

    The Boeing 737 MAX 9 family is used most often on this route, operated mainly by United Airlines. Other aircraft seen on the route include Boeing 737-800 Passenger/BBJ2 (winglets) variants.

  • Have flight prices from Portland to Washington, D.C. Dulles Intl Airport changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $349 to $2,063. That means the highest observed fare was about 6x higher than the lowest one.

  • How are flight prices from Portland to Washington, D.C. Dulles Intl Airport looking right now?

    One-way fares from Portland to Washington, D.C. Dulles Intl Airport are currently lower than usual. Average one-way flight prices are about $226, which is 26% below the typical average for this route.

  • What car rental options are available at Washington, D.C. Dulles Intl Airport (IAD)?

    Washington, D.C. Dulles Intl Airport (IAD) hosts 5 major car rental companies, with daily rates starting from around $24 for economy cars. Top options include:

    • Dollar
    • Hertz
    • Budget
    • Sixt
    • Thrifty

  • Which airports can I use when flying from Portland to Washington, D.C. Dulles Intl Airport?

    Flights from Portland to Washington, D.C. Dulles Intl Airport usually depart from Portland (PDX) and arrive at Washington, D.C. Dulles Intl (IAD).

  • Which airports do connecting flights from Portland to Washington, D.C. Dulles Intl Airport pass through?

    One-stop flights from Portland to Washington, D.C. Dulles Intl Airport most commonly connect through:

    • Seattle/Tacoma Intl (SEA) - 29% of one-stop connections
    • Denver Intl (DEN) - 21% of one-stop connections
    • Chicago O'Hare Intl (ORD) - 12% of one-stop connections
    • Las Vegas Harry Reid Intl (LAS) - 10% of one-stop connections

  • Can I save money by using flexible dates for flights from Portland to Washington, D.C. Dulles Intl Airport?

    Yes. Flexible dates can save you up to 22% on flights from Portland to Washington, D.C. Dulles Intl Airport. Friday is the cheapest departure day at $470 round-trip on average, while Monday is the most expensive at $597, a difference of $127.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What airlines fly from Portland to Washington, D.C. Dulles Intl Airport?

    Only United Airlines operates flights between Portland and Washington, D.C. Dulles Intl Airport.

  • How much time can I save by choosing a different layover airport from Portland to Washington, D.C. Dulles Intl Airport?

    Flying via Minneapolis St Paul (MSP) gives the shortest average 1-stop total travel time at 7h 16m, compared with 7h 39m via Charlotte Douglas (CLT) and 7h 52m via Detroit Metropolitan Wayne County (DTW).

  • What is the time difference between Portland and Washington, D.C. Dulles Intl Airport?

    Washington, D.C. Dulles Intl Airport is 3 hours ahead of Portland (Eastern Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Washington, D.C. Dulles Intl Airport?

    Some of the most popular sights in Washington, D.C. Dulles Intl Airport are Walter E. Washington Convention Center, National Mall and Capital One Arena. These are among the most viewed places in Washington, D.C. Dulles Intl Airport on KAYAK.

  • Which airlines offer extra legroom and free seat selection on Portland to Washington, D.C. Dulles Intl Airport flights?

    Among airlines operating Portland to Washington, D.C. Dulles Intl Airport flights:

    • United Airlines: offers extra legroom; offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines include bags at no extra cost on Portland to Washington, D.C. Dulles Intl Airport flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • United Airlines: a cabin bag and a checked bag in Economy Class

    Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

Your guide to booking Portland to Washington, D.C. Dulles Intl Airport flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Friday departure and avoid flying on Monday. On this route, Friday flights average $470, about $127 less than Monday fares (21% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 24 weeks before you fly. On this route, that window historically saves about 65% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Portland to Washington, D.C. Dulles Intl Airport trip for February. Fares historically average $337 round-trip in that month - typically $241 less than the most expensive month, which is June (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Las Vegas Harry Reid Intl Airport (LAS) can be cheaper than flying direct. The cheapest layover option averages $363 round-trip on this route - about $162 less than direct flights (based on the last 12 months).

Prefer to fly direct from Portland to Washington Dulles Airport?

 
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

More options for your flight from Portland to Dulles Intl

Complete your trip to Washington, D.C. with a hotel stay or car rental

Car rentals in Washington, D.C.
Hotels in Washington, D.C.
Vacations in Washington, D.C.