Cheap flights from Montreal to Lambert-St Louis Intl

Round-trip
Economy
Montreal (YMQ)
St. Louis (STL)
Depart
Return
Any month
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The best prices from Montreal to Lambert-St Louis Intl are usually found in August or April, booked 53 days in advance, depart on a Tuesday or Wednesday and return on a Monday

How to find the cheapest flight from
Montreal (YMQ) to Lambert-St Louis Intl (STL)

All the information you need to plan the best YMQ to STL flight in 2021: compare Montreal to Lambert-St Louis Intl flight prices with the expected peak season, weather and rainfall in Lambert-St Louis Intl.
YMQ - STL
Price
C$ 277 - C$ 460
STL
Temperature
7 - 32 °C
STL
Rainfall
57 - 130 mm

Popular in

September

High demand for flights, 19% potential price rise

Cheapest in

August

Best time to find cheap flights, 26% potential price drop

Round-trip from

C$ 277

From Montreal to Lambert-St Louis Intl

One-way from

C$ 233

One-way flight from Montreal to Lambert-St Louis Intl

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Montreal to Lambert-St Louis Intl?

Leaving on a Monday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 50% on the overall cost on flights from Montreal to Lambert-St Louis Intl.

How far in advance should I book a flight from Montreal to Lambert-St Louis Intl?

Find a great deal and save up to 26% by booking at least 39 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Montreal to Lambert-St Louis Intl within the next two weeks, with the cheapest ticket starting at C$ 567.

What is the cheapest month to fly from Montreal to Lambert-St Louis Intl?

The best pricing can be found in the month of February. Prices to Lambert-St Louis Intl from Montreal average C$ 533. You can even find prices in February for less than C$ 533, as users have found deals to Lambert-St Louis Intl from as low as C$ 214. The month of June appears to be one of the more expensive times to travel to Lambert-St Louis Intl from Montreal. Flying in the targeted month can save you up to 29%.

When is the cheapest time to fly from Montreal to Lambert-St Louis Intl (YMQ - STL)?

One of the essential ways to save on airfare from Montreal to Lambert-St Louis Intl is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 29% on airfare.

Cheap flights from Montreal to Lambert-St Louis Intl in June, July 2021

The best prices found for YMQ to STL flights for June, July
21 Jun - 21 Jul
C$ 458pp
YUL
Montreal Pierre Elliott Trudeau Intl
Delta
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Delta
 
1 STOP
YUL
Montreal Pierre Elliott Trudeau Intl
22 Jun - 22 Jul
C$ 500pp
YUL
Montreal Pierre Elliott Trudeau Intl
American Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
 
1 STOP
YUL
Montreal Pierre Elliott Trudeau Intl
19 Jun - 26 Jun
C$ 520pp
YUL
Montreal Pierre Elliott Trudeau Intl
Delta
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Delta
   
2 STOPS
YUL
Montreal Pierre Elliott Trudeau Intl

Montreal to Lambert-St Louis Intl 2021 flight deals

Cheap flights to Lambert-St Louis Intl from Montreal found for this year
2 Sep - 6 Sep
C$ 426pp
YUL
Montreal Pierre Elliott Trudeau Intl
United Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
United Airlines
 
1 STOP
YUL
Montreal Pierre Elliott Trudeau Intl
21 Jun - 21 Jul
C$ 458pp
YUL
Montreal Pierre Elliott Trudeau Intl
Delta
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Delta
 
1 STOP
YUL
Montreal Pierre Elliott Trudeau Intl
22 Jun - 22 Jul
C$ 500pp
YUL
Montreal Pierre Elliott Trudeau Intl
American Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
 
1 STOP
YUL
Montreal Pierre Elliott Trudeau Intl

Last minute flights from Montreal to Lambert-St Louis Intl

Late deals on round-trip flights to Lambert-St Louis Intl from Montreal, departing today and this week
26 Jun - 29 Jun
C$ 520pp
YUL
Montreal Pierre Elliott Trudeau Intl
Delta
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Delta
 
1 STOP
YUL
Montreal Pierre Elliott Trudeau Intl
26 Jun - 29 Jun
C$ 764pp
YUL
Montreal Pierre Elliott Trudeau Intl
Air Canada
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Air Canada
   
2 STOPS
YUL
Montreal Pierre Elliott Trudeau Intl

One-way flights to Lambert-St Louis Intl from Montreal

The cheapest one-way flights from Montreal to Lambert-St Louis Intl
12:00 p.m. - 5:44 p.m.
Air Canada
1 stop
6h 44m
YUL - STL
Air Canada
C$ 233
Air Canada
9:30 a.m. - 3:19 p.m.
United Airlines
1 stop
6h 49m
YUL - STL
United Airlines
C$ 266
United
3:00 a.m. - 11:03 a.m.
Delta
2 stops
9h 03m
YUL - STL
Delta
C$ 409
Delta

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Montreal</span> to <span class="emphasized">Lambert-St Louis Intl</span> flights.

Flight FAQs

From Montreal to Lambert-St Louis Intl

What airport do you fly into for flights to St. Louis from Montreal?

Most people fly into Lambert-St Louis (STL) if they book a flight to St. Louis from Montreal. On average, Lambert-St Louis has 0 inbound flights from Montreal per day from 5 airlines. Lambert-St Louis is conveniently located just 20.4 km from St. Louis’s city centre.

Which airlines flying from Montreal to Lambert-St Louis have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like American Airlines, Air Canada, and Delta flying from Montreal to Lambert-St Louis have implemented new flexible cancellation policies.

Can I find flights from Montreal to Lambert-St Louis Intl for under C$ 498 on Cheapflights?

Yes, there are multiple flights from Montreal to Lambert-St Louis Intl for under C$ 498. The cheapest flight booked recently is on United Airlines for just C$ 426, but on average you can expect to pay C$ 667.

Are there direct flights from Montreal to Lambert-St Louis Intl for under C$ 374 on Cheapflights?

There are no direct flights from Montreal to Lambert-St Louis Intl, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.

Are there last-minute flights available from Montreal to Lambert-St Louis Intl for under C$ 623?

There are currently 2+ open flights from Montreal to Lambert-St Louis Intl within the next 7 days for less than C$ 623.

Is Montreal weather warmer or cooler than St Louis?

We forecast the temperature to be around the 32 °C's in July, on average. The temperature in St Louis is generally hotter than in Montreal. Book flights in a timely manner in correlation to your departure date.

How long is the flight from Montreal to Lambert-St Louis Intl?

There are many flights that can get you from Montreal to Lambert-St Louis Intl in 4h 40m. Fly via United Airlines, Delta, or American Airlines to get the fastest option. This flight may include one or multiple stops.

What are the cheapest airlines to flying from Montreal to Lambert-St Louis Intl round-trip?

Cheapflights users have booked flights from Montreal to Lambert-St Louis Intl round-trip from C$ 427. Other airlines that can offer you cheap pricing are Delta, from C$ 520, and American Airlines, from C$ 615.

What are the cheapest airlines to fly from Montreal to Lambert-St Louis Intl one-way?

For one-way options, check prices for Air Canada. According to our data, you can fly for as low as C$ 232. Users have also found prices from C$ 266 and C$ 409 on Air Canada and United Airlines, respectively.

Destination information for Lambert-St Louis Intl

Things to know before you go - useful duration and weather info for your trip from Montreal to Lambert-St Louis Intl.
Today's exchange rate
C$ 1 = $0.81
Average temperature for June in Lambert-St Louis Intl
30.0 °C
Avg rainfall for June in Lambert-St Louis Intl
103.0 mm

Airports servicing Montreal

Montreal Pierre Elliott Trudeau Intl (YUL)
Montreal St Hubert (YHU)

Airports servicing St. Louis

Top 5 airlines flying from Montreal to Lambert-St Louis Intl

The chart below displays the airlines Cheapflights users travelling from Montreal to Lambert-St Louis Intl choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
WestJet
C$ 249 C$ 343 No cancel fee 60%
Search WestJet flights
Air Canada
C$ 267 C$ 345 No cancel fee 67%
Search Air Canada flights
Delta
C$ 135 C$ 368 No cancel fee N/A
Search Delta flights
American Airlines
C$ 214 C$ 370 No cancel fee 71%
Search American Airlines flights
United Airlines
C$ 181 C$ 437 No cancel fee 69%
Search United Airlines flights
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