Route Price Intelligence
Cheap Flights From Boston to Seattle
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$330
Deals From
$303
Usually Costs
$303 – $380
Lowest We've Seen
$187
Based on 3,100 price pointshigh confidence
Monthly Price Guide
Jan
$297
Feb
$297
Mar
$322
Apr
$432
May
$323
Jun
$355
Jul
$379
Aug
$338
Sep
$302
Oct
$307
Nov
$303
Dec
$368
Cheapest Average Expensive
Best Time to Fly from Boston to Seattle
The cheapest time to fly from Boston to Seattle is typically January, when fares average around $297. The most expensive month tends to be April at around $432. For the best deals, consider flying in January, February, September.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $19771 price checksWorst: $332