Route Price Intelligence
Cheap Flights From St. Louis to Porto
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$1,026
Deals From
$906
Usually Costs
$906 – $1,199
Lowest We've Seen
$446
Based on 3,434 price pointshigh confidence
Monthly Price Guide
Jan
$935
Feb
—
Mar
—
Apr
$915
May
$1,183
Jun
$1,230
Jul
$1,171
Aug
$996
Sep
$989
Oct
$858
Nov
$836
Dec
$1,123
Cheapest Average Expensive
Best Time to Fly from St. Louis to Porto
The cheapest time to fly from St. Louis to Porto is typically November, when fares average around $836. The most expensive month tends to be June at around $1,230. For the best deals, consider flying in November, October, April.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $48763 price checksWorst: $758