Route Price Intelligence
Cheap Flights From St. Louis to Seattle
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$255
Deals From
$249
Usually Costs
$249 – $294
Lowest We've Seen
$154
Based on 8,358 price pointshigh confidence
Monthly Price Guide
Jan
$288
Feb
$367
Mar
$432
Apr
$236
May
$241
Jun
$270
Jul
$274
Aug
$249
Sep
$249
Oct
$249
Nov
$250
Dec
$300
Cheapest Average Expensive
Best Time to Fly from St. Louis to Seattle
The cheapest time to fly from St. Louis to Seattle is typically April, when fares average around $236. The most expensive month tends to be March at around $432. For the best deals, consider flying in April, May, October.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $15484 price checksWorst: $249