Route Price Intelligence
Cheap Flights From Seattle to Saint Louis
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$403
Great Deal
Under $238
Typical Range
$238 – $407
Lowest We've Seen
$145
Based on 271 price pointshigh confidence
Monthly Price Guide
Jan
$237
Feb
$237
Mar
$405
Apr
$407
May
$403
Jun
$403
Jul
$411
Aug
$249
Sep
$195
Oct
$197
Nov
$310
Dec
$238
Cheapest Average Expensive
Best Time to Fly from Seattle to Saint Louis
The cheapest time to fly from Seattle to Saint Louis is typically September, when fares average around $195. The most expensive month tends to be July at around $411. For the best deals, consider flying in September, October, January.
Typical Price by Travel Month
Median round-trip fare for each month, with the typical price range, from our ongoing tracking of this route
Cheapest month: November5,748 fares analyzedTypical low: $253
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