Cheap flights from Montreal to Lambert-St Louis Intl

Round-trip
Economy
Montreal (YMQ)
St. Louis (STL)
Depart
Return
Any month
Compare vs. Cheapflights |

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 Thursday and return on a Monday

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

YMQ - STL
Price
C$ 279 - C$ 463
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

Average price

C$ 450

Average for round-trip flights in February 2021

Round-trip from

C$ 279

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 48% 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$ 571.

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$ 537. You can even find prices in February for less than C$ 537, as users have found deals to Lambert-St Louis Intl from as low as C$ 216. 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 16% on airfare.

Cheap flights from Montreal to Lambert-St Louis Intl in February, March 2021

26 Feb - 5 Mar
C$ 483pp
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 Feb - 5 Mar
C$ 570pp
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
26 Feb - 5 Mar
C$ 6,192pp
YUL
Montreal Pierre Elliott Trudeau Intl
Multiple Airlines
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Multiple Airlines
     
3 STOPS
YUL
Montreal Pierre Elliott Trudeau Intl

Montreal to Lambert-St Louis Intl 2021 flight deals

7 Apr - 10 Apr
C$ 360pp
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
7 Apr - 10 Apr
C$ 362pp
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
7 Apr - 10 Apr
C$ 363pp
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

Related info for your journey

Flight FAQs

From Montreal to Lambert-St Louis Intl

Can I find flights from Montreal to Lambert-St Louis Intl for under C$ 377 on Cheapflights?

Yes, there are multiple flights from Montreal to Lambert-St Louis Intl for under C$ 377. The cheapest flight booked recently is on American Airlines for just C$ 360, but on average you can expect to pay C$ 362.

What safety measures are being taken by airlines flying from Montreal to Lambert-St Louis to control the spread of COVID-19?

Airlines globally have implemented additional safety measures to accommodate you. Delta is one of them. Airline carriers are regularly disinfecting and sanitizing their aircraft. Masks are provided and are mandatory while on board. Pre-flight testing for symptoms and antibodies, alongside socially-distanced seating (for a limited time) will work towards keeping travellers safer while flying from Montreal to Lambert-St Louis. Policies will vary by airline.

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.

Are there direct flights from Montreal to Lambert-St Louis Intl for under C$ 377 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.

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 10h 52m. Fly via 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$ 361. Another airline that can offer you cheap pricing is Delta. American Airlines is 3% cheaper than the average price of flights available within the next 90 days to this destination.

Destination information for Lambert-St Louis Intl

Today's exchange rate
C$ 1 = $0.80
Average temperature for February in Lambert-St Louis Intl
9.0 °C
Avg rainfall for February in Lambert-St Louis Intl
57.0 mm

Airports servicing Montreal

Saint-Hubert Airport (YHU)

Airports servicing St. Louis

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

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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