Route Price Intelligence
Cheap Flights From Boston to Seattle
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$367
Great Deal
Under $335
Typical Range
$335 – $394
Lowest We've Seen
$187
Based on 271 price pointshigh confidence
Monthly Price Guide
Jan
$367
Feb
$370
Mar
$372
Apr
$372
May
—
Jun
—
Jul
$515
Aug
$361
Sep
$302
Oct
$322
Nov
$340
Dec
$403
Cheapest Average Expensive
Best Time to Fly from Boston to Seattle
The cheapest time to fly from Boston to Seattle is typically September, when fares average around $302. The most expensive month tends to be July at around $515. For the best deals, consider flying in September, October, 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: September40,605 fares analyzedTypical low: $297