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 3,829 price pointshigh confidence
Monthly Price Guide
Jan
$329
Feb
$329
Mar
$322
Apr
$321
May
$270
Jun
$305
Jul
$309
Aug
$290
Sep
$300
Oct
$309
Nov
$309
Dec
$394
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 December at around $394. For the best deals, consider flying in May, August, September.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $16074 price checksWorst: $211