Route Price Intelligence
Cheap Flights From St. Louis to Portland
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$309
Deals From
$289
Usually Costs
$289 – $329
Lowest We've Seen
$160
Based on 8,281 price pointshigh confidence
Monthly Price Guide
Jan
$309
Feb
$322
Mar
$462
Apr
$297
May
$270
Jun
$309
Jul
$309
Aug
$300
Sep
$300
Oct
$309
Nov
$309
Dec
$377
Cheapest Average Expensive
Best Time to Fly from St. Louis to Portland
The cheapest time to fly from St. Louis to Portland is typically May, when fares average around $270. The most expensive month tends to be March at around $462. 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: $16090 price checksWorst: $221