Route Price Intelligence
Cheap Flights From St. Louis to Seattle
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$250
Deals From
$249
Usually Costs
$249 – $295
Lowest We've Seen
$154
Based on 8,120 price pointshigh confidence
Monthly Price Guide
Jan
$249
Feb
$354
Mar
$481
Apr
$260
May
$249
Jun
$256
Jul
$270
Aug
$250
Sep
$249
Oct
$249
Nov
$249
Dec
$309
Cheapest Average Expensive
Best Time to Fly from St. Louis to Seattle
The cheapest time to fly from St. Louis to Seattle is typically October, when fares average around $249. The most expensive month tends to be March at around $481. For the best deals, consider flying in October, November, January.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $16090 price checksWorst: $249