Route Price Intelligence
Cheap Flights From Boston to Seattle
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$343
Deals From
$332
Usually Costs
$332 – $383
Lowest We've Seen
$187
Based on 8,782 price pointshigh confidence
Monthly Price Guide
Jan
$332
Feb
$332
Mar
$492
Apr
$358
May
$327
Jun
$373
Jul
$382
Aug
$352
Sep
$332
Oct
$332
Nov
$332
Dec
$372
Cheapest Average Expensive
Best Time to Fly from Boston to Seattle
The cheapest time to fly from Boston to Seattle is typically May, when fares average around $327. The most expensive month tends to be March at around $492. For the best deals, consider flying in May, October, November.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $18788 price checksWorst: $332