$99 Cheap United flights Portland (PWM) to Washington (DCA)

View $99 flight on Thu, Sep 11, 2025Opens in a new window

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$99 Cheap United flights Portland (PWM) to Washington (DCA)

Prices were available within the past 7 days and start at $99 for one-way flights and $193 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Sep 25 - Tue, Sep 30
PWM
Portland
DCA
Washington
$193 Roundtrip, found 10 hours ago
$193
Roundtrip
found 10 hours ago
Select United flight, departing Thu, Sep 25 from Portland to Washington, returning Tue, Sep 30, priced at $193 found 10 hours ago
United
Thu, Sep 18 - Tue, Sep 23
PWM
Portland
DCA
Washington
$194 Roundtrip, found 15 hours ago
$194
Roundtrip
found 15 hours ago
Select United flight, departing Thu, Sep 18 from Portland to Washington, returning Tue, Sep 23, priced at $194 found 15 hours ago
United
Thu, Sep 25 - Tue, Sep 30
PWM
Portland
DCA
Washington
$197 Roundtrip, found 10 hours ago
$197
Roundtrip
found 10 hours ago
Select United flight, departing Thu, Sep 25 from Portland to Washington, returning Tue, Sep 30, priced at $197 found 10 hours ago
United
Mon, Nov 10 - Fri, Nov 14
PWM
Portland
DCA
Washington
$198 Roundtrip, found 7 hours ago
$198
Roundtrip
found 7 hours ago
Select United flight, departing Mon, Nov 10 from Portland to Washington, returning Fri, Nov 14, priced at $198 found 7 hours ago
United
Thu, Oct 9 - Mon, Oct 13
PWM
Portland
DCA
Washington
$198 Roundtrip, found 1 day ago
$198
Roundtrip
found 1 day ago
Select United flight, departing Thu, Oct 9 from Portland to Washington, returning Mon, Oct 13, priced at $198 found 1 day ago
United
Thu, Sep 11 - Sun, Sep 14
PWM
Portland
DCA
Washington
$199 Roundtrip, found 2 hours ago
$199
Roundtrip
found 2 hours ago
Select United flight, departing Thu, Sep 11 from Portland to Washington, returning Sun, Sep 14, priced at $199 found 2 hours ago
United
Thu, Sep 25 - Tue, Sep 30
PWM
Portland
DCA
Washington
$200 Roundtrip, found 10 hours ago
$200
Roundtrip
found 10 hours ago
Select United flight, departing Thu, Sep 25 from Portland to Washington, returning Tue, Sep 30, priced at $200 found 10 hours ago
Flights from Portland (PWM) to Washington (DCA)
Origin airport
Portland Intl. Jetport
Destination airport
Ronald Reagan Washington National
Airlines serving
American Airlines, Delta, JetBlue Airways, Southwest Airlines, United
Popular airline
Delta
Distance
481 mi
Average flight time
1 hour 48 mins

Frequently asked questions

How much is a United Airlines flight from Portland Intl. Jetport Airport (PWM) to Ronald Reagan Washington National Airport (DCA)?
You can discover cheap round-trip United Airlines flights from $193 from PWM to DCA by organizing your results from "Price (lowest to highest)" on Expedia. Or look for deals 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 PWM to DCA with United Airlines?
January is one of the cheapest months to travel to Washington with United Airlines. You could also find great prices on return and one-way tickets in February.
What is the cheapest time to book flights from Portland Intl. Jetport Airport (PWM) to Ronald Reagan Washington National Airport (DCA) with United Airlines?
To find cheap United Airlines fares from Portland Intl. Jetport Airport (PWM) to Ronald Reagan Washington National Airport (DCA), start searching one to three months before your planned departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also influence the overall price. Sunday tends to be the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your journey on a Sunday.**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 United Airlines fly nonstop from Portland Intl. Jetport Airport (PWM) to Ronald Reagan Washington National Airport (DCA)?
To figure out if there's a direct journey from PWM to DCA with United Airlines or any other airlines, select the "Nonstop" filter when looking for tickets.
What is the earliest United Airlines flight from PWM to DCA?
Browse United Airlines's earliest flights from PWM to DCA by checking our "Morning" and "Early Morning" filters. Not only will you get to where you're going sooner, early departures also have a 20% less chance of being canceled.**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 United Airlines fly into in Washington?
United Airlines flights from Portland Intl. Jetport Airport (PWM) to Washington come in to land at Ronald Reagan Washington National Airport (DCA). This is the main gateway to this city.
Why fly with United Airlines from PWM to DCA?
Offering a rewarding loyalty program, United Airlines is a popular choice for many travelers journeying from PWM to DCA. Plus, as a United Mileage Plus and One Key™ member booking through Expedia, you can earn OneKeyCash™* on eligible flights along with your airline miles.*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 United Airlines flight from Portland Intl. Jetport Airport (PWM) to Ronald Reagan Washington National Airport (DCA)?
Changes are usually free within 24 hours of making your booking, but your airline may charge a fee after that time. For more details about altering your flights, head to your "Trips," select your flight and click on "Manage Booking." If you'd like the flexibility to make changes without additional charges, tick the "Changes included" and "No cancel fee" filters when organizing your next adventure.

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