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 $217
Typical Range
$217 – $407
Lowest We've Seen
$145
Based on 271 price pointshigh confidence
Monthly Price Guide
Jan
$407
Feb
$407
Mar
$407
Apr
$407
May
—
Jun
—
Jul
$413
Aug
$249
Sep
$195
Oct
$197
Nov
$310
Dec
$407
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 $413. For the best deals, consider flying in September, October, August.
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: September21,640 fares analyzedTypical low: $244