Cheap Flights to Frontenac , MO from CA $246

View CA $246 flight on Tue, Sep. 23, 2025Opens in a new window

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How much is the cheapest flight to Frontenac?

Prices were available within the past 7 days and start at CA $246 for one-way flights and CA $424 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, Sep. 11 - Sun, Sep. 21
YYC
Calgary
STL
St. Louis
CA $424 Roundtrip, found 5 days ago
CA $424
Roundtrip
found 5 days ago
Select American Airlines flight, departing Thu, Sep. 11 from Calgary to St. Louis, returning Sun, Sep. 21, priced at CA $424 found 5 days ago
Air Canada
Tue, Sep. 23 - Tue, Oct. 7
YVR
Vancouver
STL
St. Louis
CA $438 Roundtrip, found 5 days ago
CA $438
Roundtrip
found 5 days ago
Select Air Canada flight, departing Tue, Sep. 23 from Vancouver to St. Louis, returning Tue, Oct. 7, priced at CA $438 found 5 days ago
United
Wed, Sep. 3 - Fri, Sep. 5
YVR
Vancouver
STL
St. Louis
CA $445 Roundtrip, found 5 days ago
CA $445
Roundtrip
found 5 days ago
Select United flight, departing Wed, Sep. 3 from Vancouver to St. Louis, returning Fri, Sep. 5, priced at CA $445 found 5 days ago
Delta
Tue, Sep. 23 - Thu, Oct. 2
YVR
Vancouver
STL
St. Louis
CA $445 Roundtrip, found 5 days ago
CA $445
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Sep. 23 from Vancouver to St. Louis, returning Thu, Oct. 2, priced at CA $445 found 5 days ago
WestJet
Mon, Oct. 27 - Tue, Oct. 28
YVR
Vancouver
STL
St. Louis
CA $585 Roundtrip, found 4 days ago
CA $585
Roundtrip
found 4 days ago
Select WestJet flight, departing Mon, Oct. 27 from Vancouver to St. Louis, returning Tue, Oct. 28, priced at CA $585 found 4 days ago

Find the cheapest month to fly from Columbus (CMH) to St. Louis (STL)

August is typically the cheapest month to fly

From CA $197 - CA $945 per traveller.

Graph displaying average flight prices per month

Expedia.ca gives you the best tools to secure great deals on flights to Frontenac. Use our easy and convenient booking engine to browse nonstop flights and convenient departure points every day of the year. Search airfares from the top airlines to book your perfect flight to Frontenac. Whatever your travel needs, you can always rely on Expedia.ca to help you find cheap flights to Frontenac.

Using our booking engine is simple - just type in your points of travel and preferred dates and Expedia.ca does the rest! If your travel times are flexible, you can find even better bargains by adjusting your flight dates. Browse connecting flights to increase your chances of finding even lower fares. Thanks to Expedia's Best Price Guarantee, you can book your Frontenac flights with full confidence knowing that you've found the best deal online.

Expedia.ca makes the booking process easy and stress-free by offering support along the entire way. Our friendly staff is available 24 hours a day to provide assistance and help you book your ticket. Call us toll-free at 1-888-397-3342 to answer any questions that you may have about your trip to Frontenac.

Looking to save even more? Get additional savings by bundling your Frontenac flight with a hotel and/or car rental to create a bargain travel package. Early birds can discover terrific savings by booking in advance while last minute travelers can enjoy great last minute deals. With Expedia.ca, there's no shortage of options to save even more on your Frontenac trip!

Frequently asked questions

What is the name of Frontenac's airport?
Book a flight to Frontenac and you'll be landing at Lambert-St. Louis Intl. Airport (STL).
How far is STL from central Frontenac?
Lambert Field is 13 kilometres from central Frontenac, so be prepared for a bit of a commute into the centre of the city.
What airport is best to fly into Frontenac?
With just one major airport servicing Frontenac, it won't take you too long to find the best flight. You'll be taking off to STL, which is located around 13 kilometres from the centre of town.
How many airlines fly to Frontenac?
There are 12 airlines connecting Frontenac with 61 airports from all over the globe.
Which airlines fly to Frontenac?
United Airlines and American Airlines are some of the top airlines that offer flights to Frontenac. Travellers often choose Chicago to take off from with United Airlines operating the most flights on this route.
How many nonstop flights are there to Frontenac?
Flying to somewhere new is much simpler when there aren't any lengthy stopovers. If you're making your way to Frontenac, the great news is that there are 1,206 direct flights each week.
Where are the most popular flights to Frontenac departing from?
A large number of flights to Frontenac depart from Chicago, Dallas and New York airports.
How long is the flight to Frontenac Airport?
If it's Chicago you're leaving behind, you'll be in the air for around 1 hour and 22 minutes before you touchdown in Frontenac. Terminal to terminal from Dallas takes around 1 hour and 43 minutes and from New York, the average flight time is 3 hours and 1 minute.
How to book the cheapest flight to Frontenac?
Don't leave booking your flight to Frontenac until the last minute. That's one move seasoned travellers use to get the best prices. Booking in advance means more choices and more affordable flights. Another good way to get an unbeatable deal is to shop around. If where you're headed has several airports, don't forget to research the cost of flying into a less busy terminal. Lastly, another easy way to save some cash is be ready to book fast. If you stumble on an amazing deal, don't hesitate --- grab it while the opportunity's there.
Do you have any tips for my flight to Frontenac?
If you're poorly prepared, travelling can be testing. But there's no need to hit the panic button just yet. Follow these tips and tricks and enjoy a comfortable start to your time in Frontenac. What to pack in your hand luggage:

  • The secret to having an amazing travel experience is to plan ahead. So, let's start with the essentials: passport, travel documents, bank cards and medications. Next, take on board items that'll help keep you busy, like some electronic gadgets or a juicy novel. You'll also want to pack your chargers, a quality neck pillow and a pair of headphones. Last but not least, don't forget to squeeze in toiletry items like a toothbrush, facial wipes and a clean T-shirt.

Do not pack the following items in your hand luggage:

  • Check carefully that you don't have sharp or pointed objects lurking in one of the zippers of your carry-on luggage. Other prohibited items include flammable or explosive products, such as aerosol cans and bleach, and liquids and gels in containers larger than 3.4 ounces (100 millilitres).

What to wear on a flight:

  • You'll want to go for comfort over style. Prepare for changes in temperature by dressing in layers, and opt for closed-toe, flat footwear like sneakers.
  • The result of lengthy periods of inactivity, deep vein thrombosis (DVT) is a blood clot condition that can affect some passengers on long-distance flights. Lower your risks by staying hydrated, keeping your ankles and legs moving and wearing compression socks to help your circulation.

How to get through airport security fast when flying to Frontenac?
As seasoned travellers know, the secret is to be prepared before you arrive at the security gate. That way, you'll be stepping onto that plane to Frontenac in no time at all. Follow these tips and get your trip off to a fantastic start:

  • Your passport and travel documents will need to be shown to airport security. Have them easily accessible so you don't have to dig around for them.
  • Next up is the X-ray machine. Empty your pockets and remove anything that is likely to set off the alarm. This includes things like headphones or earphones, as well as heavy jackets or coats. They'll all need to go on the X-ray conveyor belt.
  • Your electronic gadgets like phones and laptops will also have to go through the machine for inspection. No need to worry though, you'll be back online before you know it.
  • Any liquids or gels, such as perfume or toothpaste, that you want to take on board must be no greater than 3.4 ounces (100 millilitres). Also, they all must fit inside a quart-size (one litre), zip-lock bag.
  • Choosing your footwear wisely can save you valuable minutes. Hiking or heavy-style boots are often required to be removed and X-rayed separately. Slip-on sneakers usually aren't.
  • Airlines won't allow any pocket knives or other sharp items in your hand luggage. If you need to bring these kinds of items, put them in your checked baggage.

Flights to Frontenac information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Destination city name
St. Louis
Roundtrip price
CA $423

Trending flights to Frontenac

Prices were available within the past 7 days and start at CA $246 for one-way flights and CA $424 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, Sep. 11 - Sun, Sep. 21
YYC
Calgary
STL
St. Louis
CA $424 Roundtrip, found 5 days ago
CA $424
Roundtrip
found 5 days ago
Select American Airlines flight, departing Thu, Sep. 11 from Calgary to St. Louis, returning Sun, Sep. 21, priced at CA $424 found 5 days ago
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