Route Price Intelligence
Cheap Flights From Portland to Saint Louis
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$249
Deals From
$240
Usually Costs
$240 – $278
Lowest We've Seen
$167
Based on 8,237 price pointshigh confidence
Monthly Price Guide
Jan
$393
Feb
$282
Mar
$259
Apr
$249
May
$247
Jun
$260
Jul
$270
Aug
$240
Sep
$239
Oct
$278
Nov
$278
Dec
$314
Cheapest Average Expensive
Best Time to Fly from Portland to Saint Louis
The cheapest time to fly from Portland to Saint Louis is typically September, when fares average around $239. The most expensive month tends to be January at around $393. For the best deals, consider flying in September, August, May.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $16759 price checksWorst: $229