- Cheapest round trip
- $637
- Dates
- Nov 5 to Nov 11 (6 nights)
- Flight
- 1 stop on American
- Flight time
- About 9 h 54 min each way
- Distance
- About 1,060 km from Toronto
We're still building this route's price history, so we can't yet say how $637 compares. When it drops well below its usual price, it shows up on our deals page.
Check these dates on Google Flights
Fares change constantly. This was the cheapest round trip of about a week that we found; other dates and trip lengths can cost more or less. Always confirm the price before you book, and book with the airline when you can.
What this route has cost recently
The cheapest round trip we found each day since September 20, 2026: as low as $448, typically about $637, and as high as $637. That's $189 more than a week ago.
Cheapest time to fly to St. Louis
The cheapest round trips we've recorded to St. Louis, by the month you'd leave:
| Month you leave | Cheapest round trip seen |
|---|---|
| October 2026 | $448 |
| November 2026 | $469 |
October 2026 has had the lowest fare so far, at $448. Across all routes from Toronto, leaving on a Tuesday and flying home on a Wednesday is usually cheapest.
Airlines and nonstop flights
There are nonstop flights from Toronto to St. Louis. The airlines behind the cheapest fares we've found: American (from $448), American and Air Canada (from $669), Air Canada (from $872, nonstop).
More cheap flights from Toronto to the U.S.
OddFare checks the price of every destination from Toronto daily and flags the ones that drop well below normal. See today's deals or browse every route from Toronto.