Route Price Intelligence
Cheap Flights From Boston to Seattle
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$408
Great Deal
Under $345
Typical Range
$345 – $443
Lowest We've Seen
$187
Based on 271 price pointshigh confidence
Monthly Price Guide
Jan
$343
Feb
$343
Mar
$411
Apr
$410
May
$411
Jun
$447
Jul
—
Aug
—
Sep
$566
Oct
$391
Nov
$347
Dec
$411
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 $343. The most expensive month tends to be September at around $566. For the best deals, consider flying in January, February, November.
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: September25,308 fares analyzedTypical low: $297