$99 Cheap Delta flights Portland (PDX) to Washington (IAD)

View $99 flight on Mon, Aug 18, 2025Opens in a new window

$99 Cheap Delta flights Portland (PDX) to Washington (IAD)

Prices were available within the past 7 days and start at $99 for one-way flights and $190 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, Aug 28 - Wed, Sep 3
PDX
Portland
IAD
Washington
$190 Roundtrip, found 1 hour ago
$190
Roundtrip
found 1 hour ago
Select Delta flight, departing Thu, Aug 28 from Portland to Washington, returning Wed, Sep 3, priced at $190 found 1 hour ago
Delta
Thu, Aug 28 - Wed, Sep 3
PDX
Portland
IAD
Washington
$197 Roundtrip, found 1 hour ago
$197
Roundtrip
found 1 hour ago
Select Delta flight, departing Thu, Aug 28 from Portland to Washington, returning Wed, Sep 3, priced at $197 found 1 hour ago
Delta
Wed, Aug 6 - Mon, Aug 11
PDX
Portland
IAD
Washington
$203 Roundtrip, found 5 hours ago
$203
Roundtrip
found 5 hours ago
Select Delta flight, departing Wed, Aug 6 from Portland to Washington, returning Mon, Aug 11, priced at $203 found 5 hours ago
Delta
Thu, Aug 28 - Thu, Sep 4
PDX
Portland
IAD
Washington
$206 Roundtrip, found 2 hours ago
$206
Roundtrip
found 2 hours ago
Select Delta flight, departing Thu, Aug 28 from Portland to Washington, returning Thu, Sep 4, priced at $206 found 2 hours ago
Delta
Fri, Aug 22 - Mon, Aug 25
PDX
Portland
IAD
Washington
$217 Roundtrip, just found
$217
Roundtrip
just found
Select Delta flight, departing Fri, Aug 22 from Portland to Washington, returning Mon, Aug 25, priced at $217 just found
Delta
Fri, Sep 19 - Sun, Sep 21
PDX
Portland
IAD
Washington
$237 Roundtrip, just found
$237
Roundtrip
just found
Select Delta flight, departing Fri, Sep 19 from Portland to Washington, returning Sun, Sep 21, priced at $237 just found
Delta
Thu, Aug 28 - Wed, Sep 3
PDX
Portland
IAD
Washington
$242 Roundtrip, found 1 hour ago
$242
Roundtrip
found 1 hour ago
Select Delta flight, departing Thu, Aug 28 from Portland to Washington, returning Wed, Sep 3, priced at $242 found 1 hour ago
Flights from Portland (PDX) to Washington (IAD)
Origin airport
Portland Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, Sun Country Airlines, United
Popular airline
Alaska Airlines
Distance
2321 mi
Average flight time
4 hours 58 mins

Frequently asked questions

How much is a Delta Air Lines flight from Portland Intl. Airport (PDX) to Washington Dulles Intl. Airport (IAD)?
Grab affordable return Delta Air Lines flights from $190 from PDX to IAD by sorting your results from "Price (lowest to highest)" on Expedia. Or search for options from $99 for a one-way journey.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from PDX to IAD with Delta Air Lines?
Delta Air Lines flights to Washington are usually cheaper in the quieter months of January and February. Whether you need a round-trip or one-way ticket, you could find a better deal then.
What is the cheapest time to book flights from Portland Intl. Airport (PDX) to Washington Dulles Intl. Airport (IAD) with Delta Air Lines?
Start searching one to three months ahead of your travel date to score cheap fares on Delta Air Lines flights from Portland Intl. Airport (PDX) to Washington Dulles Intl. Airport (IAD). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Get your timing right, and you can enjoy significant savings on domestic flights.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Delta Air Lines fly nonstop from Portland Intl. Airport (PDX) to Washington Dulles Intl. Airport (IAD)?
Simply enter your dates, click search and select the "Nonstop" filter on Expedia to find any direct flights from PDX to IAD with Delta Air Lines or another airline.
What is the earliest Delta Air Lines flight from PDX to IAD?
To find the earliest departure from PDX to IAD with Delta Air Lines, filter your search by "Early Morning" and "Morning." Booking an early flight usually means cancellations are less likely.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Delta Air Lines fly into in Washington?
Catch a Delta Air Lines flight from Portland Intl. Airport (PDX) to Washington, and you're most likely to arrive at Washington Dulles Intl. Airport (IAD). This is the airline's primary hub here.
Why fly with Delta Air Lines from PDX to IAD?
Offering an excellent in-flight experience and a rewarding loyalty program, Delta Air Lines is the leading choice for many passengers flying from PDX to IAD. What's more, if you're a Delta SkyMiles and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be put toward future getaways.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Delta Air Lines flight from Portland Intl. Airport (PDX) to Washington Dulles Intl. Airport (IAD)?
Depending on your ticket type, a fee generally applies if you cancel or reschedule your booking more than 24 hours after it's been confirmed. To find tickets with more flexibility, select our "Changes included" or "No cancel fee" filter when you look for flights. For additional information on changing or canceling your reservation, head to "Trips," select your flight and click on "Manage Booking."

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*Available to One Key members.