Route Price Intelligence
Cheap Flights From Boston to Seattle
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$332
Deals From
$293
Usually Costs
$293 – $373
Lowest We've Seen
$187
Based on 8,547 price pointshigh confidence
Monthly Price Guide
Jan
$378
Feb
$312
Mar
$272
Apr
$283
May
$293
Jun
$353
Jul
$338
Aug
$307
Sep
$272
Oct
$283
Nov
$282
Dec
$307
Cheapest Average Expensive
Best Time to Fly from Boston to Seattle
The cheapest time to fly from Boston to Seattle is typically March, when fares average around $272. The most expensive month tends to be January at around $378. For the best deals, consider flying in March, September, November.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $18781 price checksWorst: $332