Seattle/Tacoma Intl
Washington, D.C. Dulles Intl
1 stop
8h 56mAlaska Airlines
Los Angeles
Washington, D.C. Dulles Intl
Nonstop
5h 05mAlaska Airlines
San Francisco
Washington, D.C. Dulles Intl
Nonstop
5h 15mAlaska Airlines
Los Angeles
Washington, D.C. Dulles Intl
Nonstop
4h 50mAlaska Airlines
San Francisco
Washington, D.C. Dulles Intl
Nonstop
5h 10mAlaska Airlines
San Francisco
Washington, D.C. Dulles Intl
Nonstop
5h 10mAlaska Airlines
Seattle/Tacoma Intl
Washington, D.C. Dulles Intl
Nonstop
4h 52mWashington, D.C. Dulles Intl
Seattle/Tacoma Intl
Nonstop
5h 51mAlaska Airlines
Seattle/Tacoma Intl
Washington, D.C. Dulles Intl
Nonstop
4h 52mWashington, D.C. Dulles Intl
Seattle/Tacoma Intl
Nonstop
5h 39mAlaska Airlines
Seattle/Tacoma Intl
Washington, D.C. Dulles Intl
1 stop
7h 58mWashington, D.C. Dulles Intl
Seattle/Tacoma Intl
1 stop
11h 28mAlaska Airlines
Seattle/Tacoma Intl
Washington, D.C. Dulles Intl
1 stop
9h 51mWashington, D.C. Dulles Intl
Seattle/Tacoma Intl
Nonstop
5h 51mAlaska Airlines
Seattle/Tacoma Intl
Washington, D.C. Dulles Intl
1 stop
9h 32mWashington, D.C. Dulles Intl
Seattle/Tacoma Intl
Nonstop
5h 51mAlaska Airlines
Seattle/Tacoma Intl
Washington, D.C. Dulles Intl
Nonstop
4h 52mWashington, D.C. Dulles Intl
Seattle/Tacoma Intl
1 stop
8h 39mAlaska Airlines
January
$1,111
February
$456
March
$773
April
$525
May
$841
June
$1,277
July
$1,108
August
$967
September
$303
October
$996
November
$838
December
$883
Currently, the cheapest month for business class flights to Washington, D.C. Dulles Intl is September. The most expensive month for business class flights is June. The cheapest prices are shown above but prices will vary according to departure times, airlines, and how early you book.