Route Price Intelligence
Cheap Flights From Seattle to Washington Dc - Dulles
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$377
Deals From
$337
Usually Costs
$337 – $404
Lowest We've Seen
$159
Based on 8,038 price pointshigh confidence
Monthly Price Guide
Jan
$482
Feb
$247
Mar
$248
Apr
$247
May
$270
Jun
$367
Jul
$358
Aug
$347
Sep
$327
Oct
$337
Nov
$337
Dec
$344
Cheapest Average Expensive
Best Time to Fly from Seattle to Washington Dc - Dulles
The cheapest time to fly from Seattle to Washington Dc - Dulles is typically February, when fares average around $247. The most expensive month tends to be January at around $482. For the best deals, consider flying in February, April, March.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $15977 price checksWorst: $364