C$ 426 Find Cheap Flights from St. Louis to Montreal – Compare and Save

These are the earliest and latest flight times available from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport:

• Earliest: departs at 12:10 pm and lands at 2:41 pm
• Latest: departs at 12:10 pm and lands at 2:41 pm.

The flight takes about 2h 31m.

Two cabin classes are available on flights from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport:

• Economy Class
• Business Class

A direct flight from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport takes 2h 31m, covering 2,504 km.

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Round-trip flights from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport range from C$ 874 to C$ 1,154, with an average of C$ 982 over the past 12 months. Anything below C$ 874 counts as a good deal.

On this route, layover flights are cheaper than direct options on average. Layover fares average C$ 880 round-trip via Chicago O'Hare Intl (ORD), compared to C$ 1,048 for direct.

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge C$ 56–C$ 92 for the first checked bag in economy. Premium fares and elite status bookings typically include a free checked bag.

The Canadair (Bombardier) Regional Jet 900 family is used most often on this route, operated mainly by United Airlines and Air Canada. Other aircraft seen on the route include Boeing 787-8 Dreamliner variants.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about C$ 752 to C$ 2,406. That means the highest observed fare was about 3x higher than the lowest one.

Air Canada is the only airline on the St. Louis to Montreal Pierre Elliott Trudeau Intl Airport route offering in-flight Wi-Fi. Pricing depends on fare class.

One-way fares from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport are currently higher than usual. Average one-way flight prices are about C$ 560, which is 10% above the typical average for this route.

Montreal Pierre Elliott Trudeau Intl Airport (YUL) hosts 5 major car rental companies, with daily rates starting from around C$ 17 for economy cars. Top options include:

• Routes Car & Truck Rentals
• Alamo
• Thrifty
• Hertz
• Avis

Flights from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport usually depart from Lambert-St Louis (STL) and arrive at Montreal Pierre Elliott Trudeau Intl (YUL).

One-stop flights from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport most commonly connect through:

• Toronto Pearson Intl (YYZ) – 35% of one-stop connections
• Detroit Metropolitan Wayne County (DTW) – 29% of one-stop connections
• Chicago O'Hare Intl (ORD) – 29% of one-stop connections
• Atlanta Hartsfield-Jackson (ATL) – 3% of one-stop connections

Yes. Flexible dates can save you up to 18% on flights from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport. Saturday is the cheapest departure day at C$ 894 round-trip on average, while Monday is the most expensive at C$ 1,090, a difference of C$ 196.

Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

Only Air Canada operates flights between St. Louis and Montreal Pierre Elliott Trudeau Intl Airport.

Flying via Detroit Metropolitan Wayne County (DTW) gives the shortest average 1-stop total travel time at 4h 39m, compared with 5h 09m via Toronto Pearson Intl (YYZ) and 6h 15m via Atlanta Hartsfield-Jackson (ATL).

Montreal Pierre Elliott Trudeau Intl Airport is 1 hour ahead of St. Louis (Eastern Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

Some of the most popular sights in Montreal Pierre Elliott Trudeau Intl Airport are Centre Bell, Parc Jean-Drapeau, and Vieux-Port de Montréal. These are among the most viewed places in Montreal Pierre Elliott Trudeau Intl Airport on KAYAK.

Among airlines operating St. Louis to Montreal Pierre Elliott Trudeau Intl Airport flights:

• United Airlines: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• Air Canada: a carry-on bag and a checked bag in Business Class
• United Airlines: a carry-on bag and a checked bag in First Class

Baggage allowance can vary by ticket type, cabin class, route, and airline, so always check the fare details before booking.