Route Price Intelligence
Cheap Flights From Seattle to Washington Dc - Dulles
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$344
Deals From
$300
Usually Costs
$300 – $397
Lowest We've Seen
$159
Based on 1,957 price pointshigh confidence
Monthly Price Guide
Jan
$355
Feb
$368
Mar
$397
Apr
$599
May
$347
Jun
$284
Jul
$341
Aug
$285
Sep
$265
Oct
$352
Nov
$387
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 $265. The most expensive month tends to be April at around $599. For the best deals, consider flying in September, June, August.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $15969 price checksWorst: $250