Route Price Intelligence
Cheap Flights From Seattle to Saint Louis
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
$145
Based on 5,567 price pointshigh confidence
Monthly Price Guide
Jan
$275
Feb
$304
Mar
$367
Apr
$295
May
$249
Jun
$261
Jul
$260
Aug
$250
Sep
$249
Oct
$249
Nov
$250
Dec
$299
Cheapest Average Expensive
Best Time to Fly from Seattle to Saint Louis
The cheapest time to fly from Seattle to Saint Louis is typically October, when fares average around $249. The most expensive month tends to be March at around $367. For the best deals, consider flying in October, May, September.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $16080 price checksWorst: $210