$204 Find Cheap Flights from St. Louis to Montreal - Compare and Save

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

• Economy Class
• Business Class
• First Class

A nonstop flight from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport takes 00m, covering 967 miles.

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 $620 to $818, with an average of $696 over the past 12 months. Anything below $620 counts as a good deal.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $624 round-trip via Chicago O'Hare Intl (ORD), compared to $743 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$65 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 $417 to $1,180. 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 lower than usual. Average one-way flight prices are about $263, which is 27% below the typical average for this route.

Montreal Pierre Elliott Trudeau Intl Airport (YUL) hosts 5 major car rental companies, with daily rates averaging $52 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 $634 round-trip on average, while Monday is the most expensive at $773, a difference of $139.

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

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, Vieux-Port de Montréal and Palais des congres de Montreal. 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 cabin bag and a checked bag in Business Class
• United Airlines: a cabin bag and a checked bag in First Class

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