Route Price Intelligence
Cheap Flights From St. Louis to Seattle
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$240
Deals From
$209
Usually Costs
$209 – $269
Lowest We've Seen
$154
Based on 8,415 price pointshigh confidence
Monthly Price Guide
Jan
$317
Feb
$207
Mar
$224
Apr
$189
May
$224
Jun
$269
Jul
$279
Aug
$234
Sep
$229
Oct
$244
Nov
$249
Dec
$289
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 $189. The most expensive month tends to be January at around $317. For the best deals, consider flying in April, February, March.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $15457 price checksWorst: $190