Route Price Intelligence
Cheap Flights From Boston to Seattle
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$334
Deals From
$303
Usually Costs
$303 – $398
Lowest We've Seen
$187
Based on 271 price pointshigh confidence
Monthly Price Guide
Jan
$297
Feb
—
Mar
—
Apr
$502
May
$328
Jun
$378
Jul
$398
Aug
$338
Sep
$307
Oct
$312
Nov
$303
Dec
$373
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 $502. For the best deals, consider flying in January, November, September.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $19769 price checksWorst: $332