Portland (PDX) to Washington (IAD) flight deal from $296 USD in economy class

AAAmerican Airlines

Round Trip•Economy

PDX

Portland International Airport

Portland, United States

IAD

Washington Dulles International Airport

Washington, United States

$528 USD

-44%$296 USD

Verified Nov 5, 2025 at 11:38 PM

December 2025

Today

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1$376 2$336 3$296 4$317 5$317 6$296 7$317 8$317 9$296 10$296 11$317 12$336 13$436 14$457 15$457 16$436 17$476 18$527 19$516 20$646 21$516 22$606 23$572 24$436 25$431 26$497 27$548 28$550 29$466 30$442 31$376 1 2 3 4

Limited Availability

12% of dates checked are available within 10% of the lowest price

Monday, December 29th, 2025

10 round-trip options

Returning

Sat, Jan 3, 2026•5 Day Trip

$666 USD

Google Flights

Returning

Sun, Jan 4, 2026•6 Day Trip

$706 USD

Google Flights

Returning

Mon, Jan 5, 2026•7 Day Trip

$606 USD

Google Flights

Returning

Tue, Jan 6, 2026•8 Day Trip

$572 USD

Google Flights

Returning

Wed, Jan 7, 2026•9 Day Trip

$566 USD

Google Flights

Returning

Thu, Jan 8, 2026•10 Day Trip

$486 USD

Google Flights

Returning

Fri, Jan 9, 2026•11 Day Trip

$486 USD

Google Flights

Returning

Sat, Jan 10, 2026•12 Day Trip

$466 USD

Google Flights

Returning

Sun, Jan 11, 2026•13 Day Trip

$486 USD

Google Flights

Returning

Mon, Jan 12, 2026•14 Day Trip

$586 USD

Google Flights