Cheap Flights to Frontenac , MO from CA $146

View CA $146 flight on Tue, Apr 7, 2026Opens in a new window

Popular airlines to Frontenac

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How much is the cheapest flight to Frontenac?

Prices were available within the past 7 days and start at CA $146 for one-way flights and CA $298 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Mar 11 - Sat, Mar 28
DTW
Detroit
STL
St. Louis
CA $298 Roundtrip, found 3 days ago
CA $298
Roundtrip
found 3 days ago
Select United flight, departing Wed, Mar 11 from Detroit to St. Louis, returning Sat, Mar 28, priced at CA $298 found 3 days ago
American Airlines
Fri, Apr 24 - Mon, Apr 27
DTW
Detroit
STL
St. Louis
CA $321 Roundtrip, found 11 hours ago
CA $321
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Fri, Apr 24 from Detroit to St. Louis, returning Mon, Apr 27, priced at CA $321 found 11 hours ago
Delta
Fri, Apr 24 - Mon, Apr 27
DTW
Detroit
STL
St. Louis
CA $380 Roundtrip, found 11 hours ago
CA $380
Roundtrip
found 11 hours ago
Select Delta flight, departing Fri, Apr 24 from Detroit to St. Louis, returning Mon, Apr 27, priced at CA $380 found 11 hours ago
Alaska Airlines
Fri, Apr 17 - Tue, Apr 21
YVR
Vancouver
STL
St. Louis
CA $422 Roundtrip, found 2 days ago
CA $422
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Fri, Apr 17 from Vancouver to St. Louis, returning Tue, Apr 21, priced at CA $422 found 2 days ago
Air Canada
Wed, May 6 - Wed, May 27
YOW
Ottawa
STL
St. Louis
CA $433 Roundtrip, found 3 days ago
CA $433
Roundtrip
found 3 days ago
Select Air Canada flight, departing Wed, May 6 from Ottawa to St. Louis, returning Wed, May 27, priced at CA $433 found 3 days ago

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

October is typically the cheapest month to fly

From CA $193 - CA $632 per traveller.

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 hitting the runway at Lambert-St. Louis Intl. Airport (STL).
How far is Lambert-St. Louis Intl. Airport (STL) from central Frontenac?
STL is 13 kilometres from central Frontenac, so be prepared for a reasonable commute into the city centre.
What airport is best to fly into Frontenac?
With just one main airport in Frontenac, it won't take very long to find the best flight. You'll be jetting off to Lambert Field, which is located around 13 kilometres from the centre of town.
How many airlines fly to Frontenac?
There are 12 air carriers connecting Frontenac with 61 airports globally.
Which airlines fly to Frontenac?
United Airlines and American Airlines operate the largest proportion of flights to Frontenac. One of the most preferred ways to get there is on a United Airlines flight from Chicago.
How many nonstop flights are there to Frontenac?
Organizing an amazing Frontenac getaway is a piece of cake when there are 1,206 direct flights each week to choose from.
Where are the most popular flights to Frontenac departing from?
Flights to Frontenac departing from Chicago, Dallas and New York airports are the most in demand.
How long is the flight to Frontenac Airport?
If you're flying to Frontenac from Chicago, you'll have a flight time of 1 hour and 22 minutes. Those departing from Dallas should expect to be airborne for around 1 hour and 43 minutes. From New York it's 3 hours and 1 minute away.
How to book the cheapest flight to Frontenac?
If you'd like to have some extra spending money on your trip to Frontenac, then listen up! As every experienced traveller will tell you, avoid booking at the last minute. Airfares are often highest close to the departure date. Don't stop there, however. Do some research and check if there is more than one airport at your destination. Ticket prices often differ depending on which airport you pick. Remember to compare fares across airlines too. And finally, don't forget that it's first in, best dressed. Familiarize yourself with airfare costs and have your credit card ready to reserve your seat as soon as you see a great bargain. The best deals don't last long.
Do you have any tips for my flight to Frontenac?
Depending on where you're coming from, your flight to Frontenac could be completely painless or it could go on forever. We've pulled together some useful tips that will help you start your next great adventure on a positive note. What to pack in your hand luggage:

  • Travelling on a plane can be a great experience if you pack the right gear. Firstly, you'll need basic toiletry items, such as deodorant and a toothbrush, a fresh set of clothes and something to read. Secondly, make room in your carry-on bag for your phone and charger, any daily medications and perhaps a quality neck pillow too. Lastly, remember to take your passport, travel papers and your credit cards.

Do not pack the following items in your hand luggage:

  • While the list of restricted items can differ between air carriers, the general rule to follow is nothing sharp, flammable or explosive. This includes screwdrivers, blades, aerosol cans and flares. Sporting equipment like ice skates, and items that could injure passengers, such as swords and batons, can't come on board with you either.

What to wear on a flight:

  • Your goal here is to feel as comfortable as you can. Choose flat, closed-toe shoes, dress in loose, breathable clothing and don't forget to bring a sweater in case it gets cold in the cabin.
  • Deep vein thrombosis (DVT) can pose a risk on long-distance flights. It's the result of blood clots forming due to inactivity and poor circulation, so do some gentle foot and leg exercises in your seat and consider wearing compression socks or tights.

How to get through airport security fast when flying to Frontenac?
As savvy travellers know, the secret is to be well organized before you arrive at the security gate. That way, you'll be boarding that plane to Frontenac in next to no time. Follow these helpful tips and get your vacation off to a fantastic start:

  • First things first. Your ID and travel documents will need to be presented to security personnel. Keep them handy to avoid fumbling around for them.
  • Time to strip down. Well sort of. Your belt, coat, keys and other contents of your pockets, like your headphones, will need to go on a tray through the X-ray machine. Make your life easier by removing them as your turn draws near.
  • All your electronic devices, including your laptop and phone, are also required to be separately scanned.
  • Any liquids or gels, such as perfume or toothpaste, that you want to take on board must be no larger than 3.4 ounces (100 millilitres). They must also all fit inside a quart-size (one litre), clear zip-close bag.
  • Lightweight sneakers are a good footwear choice as you're less likely to have to remove them when going through security. Boots and other heavy shoes are usually subjected to additional screening.
  • Sharp or pointed items are prohibited in the cabin. They'll be seized at security, so pack 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 $297

Trending flights to Frontenac

Prices were available within the past 7 days and start at CA $146 for one-way flights and CA $298 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Apr 18 - Sat, Apr 18
YVR
Vancouver
STL
St. Louis
CA $354 Roundtrip, found 1 day ago
CA $354
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Apr 18 from Vancouver to St. Louis, returning Sat, Apr 18, priced at CA $354 found 1 day ago

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