Route Price Intelligence
Cheap Flights From Seattle to Washington Dc - Dulles
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$342
Great Deal
Under $300
Typical Range
$300 – $397
Lowest We've Seen
$159
Based on 271 price pointshigh confidence
Monthly Price Guide
Jan
$382
Feb
—
Mar
—
Apr
$654
May
$372
Jun
$290
Jul
$352
Aug
$288
Sep
$266
Oct
$352
Nov
$382
Dec
$397
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 September, when fares average around $266. The most expensive month tends to be April at around $654. For the best deals, consider flying in September, August, June.
Typical Price by Travel Month
Median round-trip fare for each month, with the typical price range, from our ongoing tracking of this route
Cheapest month: October10,010 fares analyzedTypical low: $345
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