Route Price Intelligence
Cheap Flights From Portland to Saint Louis
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$309
Deals From
$290
Usually Costs
$290 – $329
Lowest We've Seen
$160
Based on 8,163 price pointshigh confidence
Monthly Price Guide
Jan
$309
Feb
$309
Mar
$460
Apr
$289
May
$270
Jun
$309
Jul
$309
Aug
$300
Sep
$300
Oct
$309
Nov
$310
Dec
$371
Cheapest Average Expensive
Best Time to Fly from Portland to Saint Louis
The cheapest time to fly from Portland to Saint Louis is typically May, when fares average around $270. The most expensive month tends to be March at around $460. For the best deals, consider flying in May, April, August.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $16088 price checksWorst: $286