Route Price Intelligence
Cheap Flights From St. Louis to Ontario
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$279
Great Deal
Under $237
Typical Range
$237 – $343
Lowest We've Seen
$145
Based on 136 price pointshigh confidence
Monthly Price Guide
Jan
$251
Feb
$266
Mar
$440
Apr
$279
May
—
Jun
—
Jul
$279
Aug
$279
Sep
$276
Oct
$270
Nov
$296
Dec
$276
Cheapest Average Expensive
Best Time to Fly from St. Louis to Ontario
The cheapest time to fly from St. Louis to Ontario is typically January, when fares average around $251. The most expensive month tends to be March at around $440. For the best deals, consider flying in January, February, October.
Typical Price by Travel Month
Median round-trip fare for each month, with the typical price range, from our ongoing tracking of this route
Cheapest month: March7,954 fares analyzedTypical low: $440
Planning Los Angeles?
Best months to go, what a day on the ground costs, and the tours worth booking.
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