Cheap flights from Montréal - Pierre Elliott Trudeau to Lambert-St Louis Intl

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

The best prices from Montréal - Pierre Elliott Trudeau to Lambert-St Louis Intl are usually found in April or March, booked 49 days in advance, depart on a Tuesday or Thursday and return on a Monday

How to find the cheapest flight from
Montréal - Pierre Elliott Trudeau (YUL) to Lambert-St Louis Intl (STL)

YUL - STL
Price
C$ 273 - C$ 456
STL
Temperature
7 - 32 °C
STL
Rainfall
57 - 130 mm

Popular in

December

High demand for flights, 19% potential price rise

Cheapest in

April

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

Average price

C$ 397

Average for round-trip flights in February 2021

Round-trip from

C$ 273

From Montréal - Pierre Elliott Trudeau 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 Montréal - Pierre Elliott Trudeau to Lambert-St Louis Intl?

It’s generally more expensive to depart on a Monday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

How far in advance should I book a flight from Montréal - Pierre Elliott Trudeau to Lambert-St Louis Intl?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 39 days in advance, which can save you up to 26% on flights from Montréal - Pierre Elliott Trudeau to Lambert-St Louis Intl compared to booking the week you need them. Waiting 39 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at C$ 579. For sooner than that we have options available in the next 3 days from C$ 692.

What is the cheapest month to fly from Montréal - Pierre Elliott Trudeau to Lambert-St Louis Intl?

Flights from Montréal - Pierre Elliott Trudeau to Lambert-St Louis Intl lean towards being more expensive in June. Prices are generally better when you fly from Montréal - Pierre Elliott Trudeau to Lambert-St Louis Intl in February, with the cheapest ticket starting at C$ 219.

When is the cheapest time to fly from Montréal - Pierre Elliott Trudeau to Lambert-St Louis Intl (YUL - STL)?

It’s optimal to fly from Montréal - Pierre Elliott Trudeau to Lambert-St Louis Intl in the morning. By choosing this option you can save up to 16% on the cost of your flight, compared to a flight at noon.

Cheap flights from Montréal - Pierre Elliott Trudeau to Lambert-St Louis Intl in February, March 2021

12 Mar - 19 Mar
C$ 408pp
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
5 Mar - 12 Mar
C$ 467pp
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
12 Mar - 19 Mar
C$ 559pp
YUL
Montreal Pierre Elliott Trudeau Intl
United Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
United Airlines
   
2 STOPS
YUL
Montreal Pierre Elliott Trudeau Intl

Montréal - Pierre Elliott Trudeau to Lambert-St Louis Intl 2021 flight deals

21 May - 22 May
C$ 354pp
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
2 Aug - 8 Aug
C$ 358pp
YUL
Montreal Pierre Elliott Trudeau Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
ANA
 
1 STOP
YUL
Montreal Pierre Elliott Trudeau Intl
21 May - 22 May
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

Last minute flights from Montréal - Pierre Elliott Trudeau to Lambert-St Louis Intl

5 Mar - 12 Mar
C$ 467pp
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
5 Mar - 12 Mar
C$ 581pp
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 Montréal - Pierre Elliott Trudeau to Lambert-St Louis Intl

Can I find flights from Montréal - Pierre Elliott Trudeau to Lambert-St Louis Intl for under C$ 382 on Cheapflights?

Yes, there are multiple flights from Montréal - Pierre Elliott Trudeau to Lambert-St Louis Intl for under C$ 382. The cheapest flight booked recently is on American Airlines for just C$ 354, but on average you can expect to pay C$ 439.

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

New policies can now be found on Delta to help keep travellers safe while flying. 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 Pierre Elliott Trudeau Intl to Lambert-St Louis. Policies will vary by airline.

Which airlines flying from Montreal Pierre Elliott Trudeau Intl 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 Pierre Elliott Trudeau Intl to Lambert-St Louis have implemented new flexible cancellation policies.

Are there direct flights from Montréal - Pierre Elliott Trudeau to Lambert-St Louis Intl for under C$ 382 on Cheapflights?

There are no direct flights from Montréal - Pierre Elliott Trudeau 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 Montréal - Pierre Elliott Trudeau to Lambert-St Louis Intl for under C$ 509?

There are currently 2+ open flights from Montréal - Pierre Elliott Trudeau to Lambert-St Louis Intl within the next 7 days for less than C$ 509.

Does it rain more in Montréal - Pierre Elliott Trudeau or St Louis?

When travelling, it's generally smart to pack in preparation for rain or any other conditions that may arise. The rainfall in Montréal - Pierre Elliott Trudeau is roughly similar to St Louis. You can assume this to be the case over the next 15 days.

Is Montréal - Pierre Elliott Trudeau weather warmer or cooler than St Louis?

Expect the weather to be around 32 °C on average in July. As the temperature peaks, try to get your plans done early, as flight price and availability will have an impact on your travels. The climate in St Louis is generally hotter than in Montréal - Pierre Elliott Trudeau.

How long is the flight from Montréal - Pierre Elliott Trudeau to Lambert-St Louis Intl?

There are many flights that can get you from Montréal - Pierre Elliott Trudeau to Lambert-St Louis Intl in 7h 31m. Fly via American Airlines, Delta, or United Airlines to get the fastest option. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

What are the cheapest airlines to flying from Montréal - Pierre Elliott Trudeau to Lambert-St Louis Intl round-trip?

Currently priced at C$ 355, American Airlines will fly you from Montréal - Pierre Elliott Trudeau to Lambert-St Louis Intl and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and United Airlines - these airlines can fly you to your destination from C$ 366 and C$ 560, respectively. American Airlines is currently priced 3% below the average price you’ll pay for this route.

Destination information for Lambert-St Louis Intl

Today's exchange rate
C$ 1 = $0.79
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

Airports servicing St. Louis

Top 5 airlines flying from Montréal - Pierre Elliott Trudeau 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
Home North America USA Missouri St Louis Lambert-St Louis Intl Cheap flights from Montréal - Pierre Elliott Trudeau to Lambert-St Louis Intl
  • Round-trip
  • One-way
  • Multi-city
  • Economy
  • Premium Economy
  • Business
  • First
  • Multiple
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First