Find cheap flights from St. Louis to Montreal from C$ 313

In the last 3 days, the lowest price for a flight from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport was C$ 229 for a one-way ticket and C$ 440 for a round-trip.

Air Canada, Lufthansa, and United Airlines offer inflight Wi-Fi service on the St. Louis to Montreal flight route.

The Canadair (Bombardier) Regional Jet 900 is the aircraft model that flies most regularly on the St. Louis to Montreal flight route.

Star Alliance is the only airline alliance operating flights between St. Louis and Montreal.

There are direct flights from St. Louis to Montreal on a daily basis.

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Montreal.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Montreal from St. Louis is likely to change within 7 days, so travellers know whether to wait or book now.

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Montreal with an airline and back to St. Louis with another airline.

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Montreal from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.