Route Price Intelligence
Cheap Flights From St. Louis to Porto Alegre
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$1,282
Deals From
$1,230
Usually Costs
$1,230 – $1,462
Lowest We've Seen
$906
Based on 4,553 price pointshigh confidence
Monthly Price Guide
Jan
$1,230
Feb
$1,276
Mar
$1,702
Apr
$1,684
May
$1,414
Jun
$1,400
Jul
$1,380
Aug
$1,232
Sep
$1,230
Oct
$1,231
Nov
$1,228
Dec
$1,325
Cheapest Average Expensive
Best Time to Fly from St. Louis to Porto Alegre
The cheapest time to fly from St. Louis to Porto Alegre is typically November, when fares average around $1,228. The most expensive month tends to be March at around $1,702. For the best deals, consider flying in November, January, September.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $92171 price checksWorst: $1,124