Route Price Intelligence
Cheap Flights From St. Louis to Porto
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$910
Deals From
$750
Usually Costs
$750 – $1,067
Lowest We've Seen
$446
Based on 7,968 price pointshigh confidence
Monthly Price Guide
Jan
$684
Feb
$679
Mar
$769
Apr
$617
May
$922
Jun
$1,009
Jul
$1,075
Aug
$865
Sep
$876
Oct
$797
Nov
$675
Dec
$869
Cheapest Average Expensive
Best Time to Fly from St. Louis to Porto
The cheapest time to fly from St. Louis to Porto is typically April, when fares average around $617. The most expensive month tends to be July at around $1,075. For the best deals, consider flying in April, November, February.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $44656 price checksWorst: $645