Cheap flights from Montreal to St. Louis from C$ 333

YMQ — STL
26 Mar — 2 Apr1
Return
1 adult
Economy
From?
To?
Sun 26/3
Sun 2/4

The best prices from Montreal to Lambert-St Louis are usually found in January or May, booked 46 days in advance, depart on a Saturday or Thursday and return on a Monday

How to find the cheapest flight from Montreal (YMQ) to St. Louis (STL)

All the information you need to plan the best YMQ to STL flight in 2023: compare Montreal to St. Louis flight prices with the expected peak season, weather and rainfall in St. Louis.

YMQ - STL

Price

C$ 438 - C$ 594

STL

Temperature

0 - 27 °C

STL

Rainfall

56 - 119 mm

Popular inJulyHigh demand for flights, 16% potential price rise
Cheapest inJanuaryBest time to find cheap flights, 12% potential price drop
Round-trip fromC$ 600From Montreal (YMQ) to Lambert-St Louis
One-way fromC$ 333One-way flight from Montreal (YMQ) to Lambert-St Louis

Cheap flights from Montreal to St. Louis in March, April 2023

The best prices found for YMQ to STL flights for March, April

Montreal to St. Louis 2023 flight deals

Cheap flights to St. Louis from Montreal found for this year

Cheap Air Canada flights from Montreal to St. Louis

Cheap American Airlines flights from Montreal to St. Louis

Last minute flights from Montreal to St. Louis

Late deals on round-trip flights to St. Louis from Montreal, departing today and this week

One-way flights to St. Louis from Montreal

The cheapest one-way flights from Montreal to St. Louis

Find flights from Montreal to St. Louis within your budget

Use the slider to find flights from Montreal to St. Louis that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

C$ 594 - C$ 775

Route

Depart

Return

Price

Montreal Pierre Elliott Trudeau IntlLambert-St Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

2023-04-03

1 stop7h 53m

Lambert-St Louis

2023-04-04

1 stop5h 47m

C$ 594

Montreal Pierre Elliott Trudeau IntlLambert-St Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

2023-05-16

1 stop4h 49m

Lambert-St Louis

2023-05-18

1 stop4h 52m

C$ 602

Montreal Pierre Elliott Trudeau IntlLambert-St Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

2023-05-16

1 stop6h 39m

Lambert-St Louis

2023-05-18

1 stop4h 52m

C$ 604

Montreal Pierre Elliott Trudeau IntlLambert-St Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

2023-04-03

1 stop6h 05m

Lambert-St Louis

2023-04-04

2 stops9h 58m

C$ 615

Montreal Pierre Elliott Trudeau IntlLambert-St Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

2023-07-15

1 stop5h 20m

Lambert-St Louis

2023-07-20

1 stop12h 41m

C$ 633

Montreal Pierre Elliott Trudeau IntlLambert-St Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

2023-06-21

1 stop5h 20m

Lambert-St Louis

2023-06-26

1 stop12h 41m

C$ 634

Montreal Pierre Elliott Trudeau IntlLambert-St Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

2023-05-16

1 stop16h 32m

Lambert-St Louis

2023-05-18

2 stops9h 30m

C$ 638

Montreal Pierre Elliott Trudeau IntlLambert-St Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

2023-05-18

1 stop8h 53m

Lambert-St Louis

2023-05-19

1 stop14h 27m

C$ 645

Montreal Pierre Elliott Trudeau IntlLambert-St Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

2023-07-15

2 stops11h 52m

Lambert-St Louis

2023-07-20

2 stops10h 28m

C$ 775

Flights are sorted by cheapest first

Deals found on 20/3

Related info for your journey

Useful info, stats and facts about Montreal to St. Louis flights.

Alternative routes for Montreal to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from Montreal to St. Louis

The chart below displays the airlines Cheapflights users travelling from Montreal to St. Louis choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
American AirlinesCheapestC$ 509AverageC$ 664FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights
DeltaCheapestC$ 553AverageC$ 667FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
Endeavor AirlinesCheapestC$ 571AverageC$ 924FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Endeavor Airlines flights
Air CanadaCheapestC$ 577AverageC$ 696FlexibilityNo cancel feeOn-time67%COVID-19 safety
Search Air Canada flights
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