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 – $330
Lowest We've Seen
$160
Based on 3,765 price pointshigh confidence
Monthly Price Guide
Jan
$329
Feb
—
Mar
—
Apr
$373
May
$270
Jun
$296
Jul
$300
Aug
$296
Sep
$300
Oct
$309
Nov
$323
Dec
$377
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 December at around $377. For the best deals, consider flying in May, June, August.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $16074 price checksWorst: $286