$146 Cheap Delta flights Portland (PWM) to Washington (IAD)

View $146 flight on Wed, Jan 7, 2026Opens in a new window
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$146 Cheap Delta flights Portland (PWM) to Washington (IAD)

Prices were available within the past 7 days and start at $146 for one-way flights and $209 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Jan 10 - Sun, Jan 11
PWM
Portland
IAD
Washington
$209 Roundtrip, found 1 hour ago
$209
Roundtrip
found 1 hour ago
Select Delta flight, departing Sat, Jan 10 from Portland to Washington, returning Sun, Jan 11, priced at $209 found 1 hour ago
Delta
Fri, Jan 23 - Sat, Jan 31
PWM
Portland
IAD
Washington
$214 Roundtrip, found 6 hours ago
$214
Roundtrip
found 6 hours ago
Select Delta flight, departing Fri, Jan 23 from Portland to Washington, returning Sat, Jan 31, priced at $214 found 6 hours ago
Delta
Thu, Jan 15 - Sun, Jan 18
PWM
Portland
IAD
Washington
$224 Roundtrip, found 6 hours ago
$224
Roundtrip
found 6 hours ago
Select Delta flight, departing Thu, Jan 15 from Portland to Washington, returning Sun, Jan 18, priced at $224 found 6 hours ago
Delta
Tue, Jan 13 - Fri, Jan 16
PWM
Portland
IAD
Washington
$236 Roundtrip, found 1 day ago
$236
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Jan 13 from Portland to Washington, returning Fri, Jan 16, priced at $236 found 1 day ago
Delta
Sat, Jan 10 - Sun, Jan 11
PWM
Portland
IAD
Washington
$254 Roundtrip, found 1 hour ago
$254
Roundtrip
found 1 hour ago
Select Delta flight, departing Sat, Jan 10 from Portland to Washington, returning Sun, Jan 11, priced at $254 found 1 hour ago

Find the cheapest month to fly from Portland (PWM) to Washington (IAD)

September is typically the cheapest month to fly

From $158 - $482 per traveler.

Alternative airports near Washington

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Ronald Reagan Washington National DCA. Closest option available. Average driving time to city center is 8 minutes. Flights from $292
DCA
Ronald Reagan Washington National
Closest
Average driving time to city center8 min
Flights from $292
Flights from Portland (PWM) to Washington (IAD)
Origin airport
Portland Intl. Jetport
Destination airport
Washington Dulles Intl.
Airlines serving
American Airlines, Delta, United
Popular airline
United
Distance
492 mi
Average flight time
1 hour 59 mins
*Available to One Key members.