$1237 Cheap Flights from Canada to St. Louis Lambert International
One-way
Departing from
Canada
Going to
St. Louis Lambert International
St. Louis (STL)
United States • April, 2026
59% AI deal score
$1,975 $1,237
St. Louis (STL)
United States • April, 2026
58% AI deal score
$1,975 $1,481
Top Cheap Flight Deals from Canada to St. Louis Lambert International
Recent round-trip flight deals to St. Louis Lambert International
Fri, May 15 - Mon, May 18
Cheapest
Calgary (YYC) - St. Louis (STL)
WestJet airlines • 2 stops • Atlanta (ATL), Orlando (MCO)
St. Louis (STL) - Calgary (YYC)
Frontier Airlines airlines • 1 stop • Atlanta (ATL)
$348
$488
+$140
40%
Thu, Apr 2 - Sun, Apr 5
Calgary (YYC) - St. Louis (STL)
WestJet airlines • 2 stops • Edmonton (YEG), Minneapolis (MSP)
St. Louis (STL) - Calgary (YYC)
WestJet airlines • 2 stops • Minneapolis (MSP), Vancouver (YVR)
$348
$712
+$364
105%
The cheapest time to fly to St. Louis Lambert International
Ready to jet to St. Louis Lambert International on a budget? Check out these popular routes with surprisingly cheap fares (one-way prices):
Last-Minute Flights from Canada to St. Louis Lambert International
Need to get to St. Louis Lambert International ASAP? Even if you're booking a flight on short notice, there are often last-minute deals available:
Next 2 weeks deals
Last Minute Flight Deals!
We found a flight departing in the next two weeks to St. Louis for only $1481!
⌛ Last-Minute
Waskaganish - STL
A great last-minute steal for a cross-country flight.
Found 1 day ago
$1481
one-way
Facts About Flights from Canada to St. Louis
To help you plan your journey, here are some quick St. Louis flight facts and tips.
St. Louis airports
St. Louis Lambert International Airport (STL) is the primary airport serving the St. Louis metropolitan area, offering a wide range of domestic and international flights. Conveniently located just 14 miles northwest of downtown St. Louis, STL provides easy access to the city's attractions and business centers. The airport features two terminals, with Terminal 1 primarily serving domestic carriers and Terminal 2 hosting Southwest Airlines. Passengers can enjoy a variety of amenities, including restaurants, shops, and free Wi-Fi throughout the terminals. With multiple parking options and efficient public transportation links, St. Louis Lambert International Airport ensures a smooth travel experience for visitors to the Gateway City.
Pro tip: search “St. Louis (Any)” to see fares to all St. Louis airports – sometimes one is cheaper than the others on your dates.
Insights for flights to St. Louis Lambert International
Cheapest airport
MidAmerica St. Louis Airport (BLV)
Looking to save some serious dough on your flight to the St. Louis area? MidAmerica St. Louis Airport (BLV) in Mascoutah, Illinois, is often the unsung hero of budget travel, located about 30 miles east of downtown St. Louis, BLV offers a no-frills, less crowded alternative, primarily served by Allegiant Air, which translates to potential savings for savvy travelers willing to venture a bit outside the city center.
Nonstop vs. 1-stop
20+ cities
While St. Louis isn't a major hub, it's a secondary airport that connects you to over 20 cities, with popular routes to destinations like Denver, Chicago, and Charlotte.
Number of airlines
10+ airlines
St. Louis is served by over 10 airlines, with popular choices including full-service carriers like American, Delta, and United, plus low-cost options such as Southwest and Frontier.
STL Airport Deal Stats
Current most discounted routes
Avg. most discounted routes (last 3 months)
STL airport insights
Best days to catch a deal
Fri, Wed
Based on the provided data, Sunday is the best day to find flight deals from St. Louis Lambert International Airport. Friday has the most expensive deals, so avoid booking flights on that day.
Avg. deal survival time
14.2 hours
Deals from St. Louis Lambert International Airport typically last around 14.2 hours. This means that you should book quickly if you see a flight deal that you like!
Rare deal frequency
5 deals
We found 5 rare deals for flights in and out of St. Louis Lambert International Airport in the past month. These rare deals received an AI Deal Score of 90+ and usually consist of mistake fares, special promotions, or ultra-discounts.
Average price drop
-49%
The average price drop for flights departing from St. Louis Lambert International Airport is 48.6%, indicating a significant potential for savings. This suggests that travelers flying from this airport may benefit from monitoring prices and booking when they drop to secure better deals.
Next 4 weeks: deal forecast
St. Louis Flight Forecast - Next Month
Based on current data, flight prices to St. Louis Lambert International are expected to remain relatively stable next month. There are no significant price drops or increases anticipated at this time.
Top 5 biggest price drops (last 3 months)
Found on March 25
San Diego - STL
$810 → $160
80%
Found on March 25
Boise - STL
$895 → $236
74%
Found on March 27
São Paulo - STL
$1,525 → $809
47%
Found on March 29
San Pedro Sula - STL
$2,060 → $1,264
39%
Found on March 30
Baku - STL
$1,400 → $869
38%
Check these nearby airports too
Looking for more options? These airports near STL sometimes drop rare deals too:
Central Illinois Regional (BMI)
~8 rare deals/month
University of Illinois Willard (CMI)
~7 rare deals/month
Abraham Lincoln Capital (SPI)
~9 rare deals/month
If you’re flexible with departure cities, it’s worth keeping an eye on nearby airports — especially BMI and CMI for long-haul deal surprises.
When Is the Best Time to Fly from Canada to St. Louis Lambert International
Timing is everything when hunting for cheap flights. Here are data-backed insights on the best times to fly to St. Louis Lambert International:
Cheapest month
January
Cheapest month
January is typically the cheapest month to fly to St. Louis. You can explore the city's awesome indoor attractions, like the City Museum or the Saint Louis Art Museum, without breaking the bank. Plus, you might even catch a beautiful snowfall over the Gateway Arch!
Best day to book
Tuesday
Best day to book
Booking your flight on a Tuesday can save you some serious cash! Airlines often release deals early in the week, so keep an eye out. Snagging a Tuesday flight deal could leave you with more money for toasted ravioli and gooey butter cake – yum!
Cheapest days to fly
Wednesday
Cheapest days to fly
Flying on a Wednesday is often the cheapest option. Mid-week flights tend to be less popular, which means airlines drop prices to fill those seats. You can enjoy all the attractions of St. Louis, like the Anheuser-Busch Brewery or the Missouri Botanical Garden, with a little extra spending money.
Advance booking sweet spot
2 Months
Advance booking sweet spot
The sweet spot for booking flights to St. Louis is about 2 months in advance. This gives you a good balance between availability and price. Booking ahead can help you lock in the best deals before they disappear faster than a Cardinals home run!
St. Louis Lambert International Airports & Ground Transportation
One big question for travelers is which St. Louis Lambert International airport to fly into. Here’s a quick guide to St. Louis Lambert International’s airports and how to get to the city from each:
St. Louis Lambert International Airport (STL)
St. Louis Lambert International Airport, or simply Lambert, is the primary airport serving the St. Louis metropolitan area. With its iconic terminal designed, it offers a variety of amenities including shops, restaurants, and lounges to make your travel experience more enjoyable. Conveniently located just 14 miles northwest of downtown St. Louis, Lambert provides easy access to the city via MetroLink light rail, taxis, and ride-sharing services. The airport serves as a hub for Southwest Airlines, connecting St. Louis to destinations nationwide. Whether you're arriving or departing, Lambert aims to provide a seamless travel experience.
Tip: Arrive early to explore the airport's aviation history exhibit and grab a bite at one of the local eateries!
Other airports
Okay, buckle up, travel enthusiasts! While St. Louis has its own fantastic Lambert International Airport, keep your eyes peeled for nearby options like MidAmerica St. Louis Airport (BLV) in Mascoutah, Illinois. BLV could offer tempting deals, but remember, the journey to downtown St. Louis is a bit longer, so weigh those savings against travel time and transportation costs, like a rental car or pre-booked shuttle.
What to Do in St. Louis
St. Louis isn’t just about getting there – it’s about enjoying the country once you arrive! Here are some top things to do in St. Louis, organized by interest:
Sightseeing & landmarks
Get ready to feast your eyes on the iconic Gateway Arch, a towering monument that symbolizes westward expansion! Explore the City Museum, a quirky architectural marvel, or wander through the historic Lafayette Square, lined with stunning Victorian homes. St. Louis is a city where history and architectural wonders collide!
Arts & culture
Immerse yourself in the vibrant arts scene of St. Louis! Visit the Saint Louis Art Museum, home to diverse collections spanning centuries and cultures, or catch a Broadway show at the Fabulous Fox Theatre, a dazzling masterpiece of design. For a more intimate experience, explore the many local galleries and theaters that showcase the city's creative spirit.
Food & nightlife
Prepare your taste buds for a culinary adventure in St. Louis! Indulge in the city's famous toasted ravioli, a local delicacy, or savor the smoky flavors of St. Louis-style barbecue. As the sun sets, the city comes alive with a vibrant nightlife, offering everything from cozy pubs to trendy cocktail bars and live music venues.
Shopping & fashion
Shop 'til you drop in the diverse shopping districts of St. Louis! Explore the unique boutiques and antique shops in the Central West End, or head to the upscale Galleria for designer brands and department stores. From vintage finds to cutting-edge fashion, St. Louis has something to satisfy every style and budget.
Events in St. Louis This Month
colorado rapids 2 at saint louis city sc 2
Get your tickets to see Colorado Rapids 2 take on Saint Louis City SC 2 at Energizer Park in St. Louis, Missouri on April 10, 2026.
jackopierce
City Winery St. Louis welcomes Jackopierce live on April 1st at 7:30pm! This seminal duo will bring their signature sound to the stage for an unforgettable performance.
san jose earthquakes at st. louis city sc
Attend the St. Louis City SC vs. San Jose Earthquakes match at Energizer Park, located at 2100 Market St, on Saturday, April 25th at 7:30 P.M. Cheer on your favorite team as they battle it out on the field.
paul gilbert with special guest greg koch
City Winery St. Louis presents Paul Gilbert live on April 24th at 7:30pm! The guitar virtuoso will be showcasing his new album, WROC, with a dazzling display of technical skill and musical innovation.
St. Louis Weather
Weather in St. Louis
Tue, Mar 31
25%
28° 16°
25%
Wed, Apr 1
Frequently Asked Questions About Flights to St. Louis Lambert International
Pro Tips for Finding Cheap Flights to St. Louis Lambert International
Finally, to wrap up, here’s a cheat sheet of pro tips that experienced travelers use to save on St. Louis Lambert International flights:
Be Flexible With Your Dates: Flying on weekdays or during the off-season can lead to significant savings. Mid-week flights are often cheaper than weekend flights because fewer people want to travel then.
Set Up Price Alerts: Use RatePunk to set up price alerts for flights to St. Louis! You'll be notified when prices drop, ensuring you snag the best deal before anyone else. Don't miss out on potential savings!
