Route Price Intelligence
Cheap Flights From Seattle to Washington Dc - Dulles
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$397
Deals From
$357
Usually Costs
$357 – $412
Lowest We've Seen
$159
Based on 8,724 price pointshigh confidence
Monthly Price Guide
Jan
$397
Feb
$397
Mar
$615
Apr
$297
May
$307
Jun
$390
Jul
$413
Aug
$397
Sep
$397
Oct
$397
Nov
$397
Dec
$407
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 April, when fares average around $297. The most expensive month tends to be March at around $615. For the best deals, consider flying in April, May, June.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $15987 price checksWorst: $250