Cheap flights from Montreal, Canada to St. Louis, MO
Flights starting at CA$223. Choose between United Airlines, Frontier Airlines, or Spirit Airlines to find the best price.
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Tips to know when travelling to St. Louis
Cheapest one-way trip | CA$328 |
|---|---|
Cheapest round-trip | CA$406 |
Average round-trip | CA$670 |
Includes rare itinerary | |
Most popular airline | United Airlines |
One-way trips
Updated:
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Travelers usually depart from Montréal–Pierre Elliott Trudeau International, or Montreal Saint-Hubert Longueuil when they travel from Montreal to St. Louis. The most popular airlines for this route are United Airlines, Frontier Airlines, Spirit Airlines, WestJet, and Flair Airlines. Montreal and St. Louis have 131 direct flights per week.
Weekly direct flights
Discover the top airlines offering direct flights from Montreal to St. Louis in the next month. You’ll find the number of daily direct flights per airline in the table.
Weekly direct flights for Sun 14.04 - Sat 20.04
| Airline | Sun 14.04 | Mon 15.04 | Tue 16.04 | Wed 17.04 | Thu 18.04 | Fri 19.04 | Sat 20.04 |
|---|---|---|---|---|---|---|---|
| --- | --- | --- | --- | --- | --- | --- | |
| --- | --- | --- | --- | --- | --- | --- |
Weekly direct flights for Sun 21.04 - Sat 27.04
| Airline | Sun 21.04 | Mon 22.04 | Tue 23.04 | Wed 24.04 | Thu 25.04 | Fri 26.04 | Sat 27.04 |
|---|---|---|---|---|---|---|---|
| --- | --- | --- | --- | --- | --- | --- | |
| --- | --- | --- | --- | --- | --- | --- |
Weekly direct flights for Sun 28.04 - Sat 04.05
| Airline | Sun 28.04 | Mon 29.04 | Tue 30.04 | Wed 01.05 | Thu 02.05 | Fri 03.05 | Sat 04.05 |
|---|---|---|---|---|---|---|---|
| --- | --- | --- | 1 | 1 | --- | 1 | |
| --- | --- | --- | --- | --- | --- | 1 |
Weekly direct flights for Sun 05.05 - Sat 11.05
| Airline | Sun 05.05 | Mon 06.05 | Tue 07.05 | Wed 08.05 | Thu 09.05 | Fri 10.05 | Sat 11.05 |
|---|---|---|---|---|---|---|---|
| --- | --- | --- | 1 | 1 | 1 | --- | |
| --- | --- | --- | --- | --- | --- | --- |
Check-in for a flight from Montreal to St. Louis
| Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
|---|---|---|---|---|
| United Airlines | UAL | UA | Yes | No |
| Frontier Airlines | FFT | F9 | No | Opens 24 days before flight Closes 1 hours before flight |
| Spirit Airlines | NKS | NK | No | Opens 24 days before flight Closes 1 hours before flight |
| WestJet | WJA | WS | No | Opens 24 days before flight Closes 1 hours before flight |
| Flair Airlines | FLE | F8 | Yes | Opens 24 days before flight Closes 1 hours before flight |
Weather in St. Louis
Average Weather
| Month | Average monthly max temperature | Average monthly min temperature |
| January | 3°C | -3°C |
| February | 6°C | -2°C |
| March | 13°C | 3°C |
| April | 18°C | 8°C |
| May | 24°C | 14°C |
| June | 29°C | 19°C |
| July | 31°C | 21°C |
| August | 30°C | 20°C |
| September | 27°C | 16°C |
| October | 20°C | 10°C |
| November | 12°C | 3°C |
| December | 7°C | 0°C |
14 day forecast
Frequently asked questions
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Flights to St. Louis
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Popular routes
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The nearest countries with flights to St. Louis
Here is a list of countries people are flying from
Other destination countries from Montreal
Here is a list of countries people are flying toAirports near Montreal
- Montréal–Pierre Elliott Trudeau International
- Ottawa Macdonald–Cartier International
- Plattsburgh International
- Québec City Jean Lesage International
- Burlington International
- Ogdensburg International
- Massena International
- Lebanon Municipal
- Adirondack Regional
- Rutland–Southern Vermont Regional