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
$327
Usually Costs
$327 – $407
Lowest We've Seen
$159
Based on 8,635 price pointshigh confidence
Monthly Price Guide
Jan
$397
Feb
$397
Mar
$671
Apr
$410
May
$319
Jun
$355
Jul
$404
Aug
$397
Sep
$397
Oct
$397
Nov
$397
Dec
$411
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 May, when fares average around $319. The most expensive month tends to be March at around $671. For the best deals, consider flying in May, June, October.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $15989 price checksWorst: $250