C$ 205 Cheap flights to St. Louis
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to St. Louis departing on 9/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Early arrival? Instantly customize your resultsTrusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Canada to St. Louis
Cheap round-trip flights
Cheap one-way flights
Cheap last-minute flights
Recent direct flight deals from Canada to St. Louis
See travel insights to St. Louis from
St. Louis flights insights and trends
Explore insights for your St. Louis flight to craft the best travel plan
What is the cheapest month to fly to St. Louis?
The month of June is, on average, the cheapest month to fly to St. Louis from Canada, with most prices found around C$ 533. If you don’t want to visit St. Louis in June, then you should wait until November to fly from Canada, when ticket prices are also cheap, with an average price of C$ 634.
What is the absolute cheapest flight to St. Louis?
See prices from:
What is the cheapest day to depart on your flight to St. Louis?
Our data shows that Thursday is the least expensive day to fly to St. Louis. Tickets to fly out on this day can be as low as C$ 600. The most expensive day to fly to St. Louis is Monday, with ticket prices averaging around C$ 749.
What is the cheapest time of day to depart on your flight to St. Louis?
The cheapest time of day to fly to St. Louis is in the morning when flights can be purchased for as low as C$ 534. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 683 on average. Flights to St. Louis from Canada at noon are generally more expensive because this time of day is more convenient for travellers’ schedules.
Cheapest flights to Lambert-St Louis
Find the cheapest flights to Lambert-St Louis from your nearest city or airport
| CHEAPEST MONTH TO FLY TO ST. LOUIS FROM TORONTO PEARSON INTL AIRPORT | May | 18% cheaper | Flying from Toronto Pearson Intl Airport to St. Louis costs on average just C$ 548 in May |
| MOST EXPENSIVE MONTH TO FLY TO ST. LOUIS FROM TORONTO PEARSON INTL AIRPORT | December | 13% more expensive | It costs about C$ 755 for flights to St. Louis from Toronto Pearson Intl Airport in December |
| MOST POPULAR MONTH TO FLY TO ST. LOUIS FROM TORONTO PEARSON INTL AIRPORT | May | 515% more users visited | More momondo users searched in flights to St. Louis from Toronto Pearson Intl Airport in May than any other month |
Cheap St. Louis flight deals and tips
Summary info about St. Louis flight prices, duration and airlines
Best One-Way Price | C$ 205 |
|---|---|
Best Round-Trip Price | C$ 416 |
Fastest flight time | 2h 06m |
Popular in | May |
Frequently asked questions about flying to St. Louis
How far in advance should I book a flight to St. Louis?
The best time to book a flight to St. Louis from Canada is 65 days out, which is when prices tend to be around C$ 674. In the past 72 hours, momondo users found flights from Canada to St. Louis for as low as C$ 308.
Is there an alternative airport near St. Louis?
Belleville Airport, Marion Williamson County Airport or Springfield Capital Airport can be an alternative airport used for travel to St. Louis.
When did momondo last update prices for flights to Lambert-St Louis Airport?
Prices for flights to Lambert-St Louis Airport were last updated today.
How many operators does momondo search for flights to Lambert-St Louis Airport?
As of June 2025, there are 6 operators available to choose from for flights to Lambert-St Louis Airport.
How old do you have to be to fly to Lambert-St Louis Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
Travelling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal to St. Louis?
It is quick and easy to find flights to St. Louis on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to St. Louis that suits you.
Can I find flights to St. Louis with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to St. Louis with this policy.
How can momondo help me find flights to St. Louis?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight to St. Louis.
I’m not ready to book a flight to St. Louis right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.
Get notified when prices go down
Daily price changes in your inbox - only with Price Alerts.
Find better results for your trip to St. Louis
Popular Flights to St. Louis
Popular routes according to searches in the past day on momondo
Cheapest flight routes to Lambert-St Louis
These routes have the cheapest flights to Lambert-St Louis found by momondo users in Canada
| Departing | Destination | Best Time | Best Price |
|---|---|---|---|
| Vancouver | St. Louis | 7h 34m | C$ 447 |
| Toronto | St. Louis | 2h 03m | C$ 451 |
| Calgary | St. Louis | 6h 51m | C$ 544 |
| Edmonton | St. Louis | 5h 33m | C$ 569 |
| Montreal | St. Louis | 2h 47m | C$ 581 |
| Victoria | St. Louis | 13h 05m | C$ 618 |
| Halifax | St. Louis | 6h 50m | C$ 688 |
| Saskatoon | St. Louis | 14h 31m | C$ 707 |
| Ottawa | St. Louis | 10h 42m | C$ 771 |
| Québec City | St. Louis | 8h 44m | C$ 824 |
| Charlottetown | St. Louis | 11h 12m | C$ 947 |