Popular airlines to Frontenac

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Alternative airports near Frontenac

Prices were available within the past 7 days. Prices and availability are subject to change.

STL

Lambert-St. Louis Intl.

CheapestClosest

17 min

Flights from $317

What you need to know for your flight to Frontenac

Flights to Frontenac at a glance

Traveling to Frontenac is easy—choose from either full-service or budget airlines. Compare flight durations and select the best option that aligns with your budget and schedule, making your trip to explore the city's renowned attractions and neighborhoods a breeze. Consider booking cheap flights to Frontenac for great deals!

Major airport near Frontenac: Lambert-St. Louis International Airport (STL)
Flights per week: 3,150+ flights arriving at Frontenac airport
Number of airlines that fly to Frontenac: around 40+ carriers

Popular airport near Frontenac

Frontenac, Missouri, is a vibrant city that caters to family getaways, urban exploration, and outdoor adventures. Visitors are drawn to Frontenac for its blend of culture, family-friendly activities, and business opportunities. Conveniently, the city is accessible via a major airport, making travel easy for those seeking a memorable experience.

Lambert-St. Louis International Airport (STL): Situated in St. Louis County, Missouri, approximately 8 miles from Frontenac, this airport offers a mix of domestic and international flights, linking travelers to around 210 domestic locations and 110 destinations worldwide. Passengers have the option to enhance their journey by choosing first class, premium economy, or business class seating, depending on the airline and route. Major airlines operating here include Southwest Airlines, American Airlines, and Delta.

Top routes to Frontenac

New York (JFK/LGA) to Frontenac (STL), with one-way fares starting at around $90
Las Vegas (LAS) to Frontenac (STL), with one-way tickets available from around $60
Orlando (MCO) to Frontenac (STL), with one-way airfare from around $45
Denver (DEN) to Frontenac (STL), with one-way flights starting at around $45
Los Angeles (LAX) to Frontenac (STL), with one-way fares starting at around $120

Cheapest routes to Frontenac

Chicago (ORD/MDW) to Frontenac (STL), with budget one-way fares from around $40
Kansas City (MCI) to Frontenac (STL), with low one-way fares from around $40
Quincy (UIN) to Frontenac (STL), with affordable one-way prices from around $40
Orlando (MCO) to Frontenac (STL), with low one-way fares from around $45
Denver (DEN) to Frontenac (STL), with low one-way fares from around $45

*Flight times and fares vary by season and availability and are based on one-way routes

Top airlines with flights to Frontenac

American Airlines: Operating flights to Lambert-St. Louis International Airport (STL), this airline represents about 28% of arrivals to Frontenac. The typical one-way fare is around $330, with the possibility of first-class service available based on the route.
Southwest Airlines: Serving Lambert-St. Louis International Airport (STL), Southwest Airlines accounts for nearly 27% of arrivals to Frontenac. Passengers can expect an average one-way fare of roughly $240.
Delta: With flights to Lambert-St. Louis International Airport (STL), Delta makes up approximately 20% of arrivals to Frontenac. The average fare for a one-way ticket is around $290, with premium economy and first-class options available depending on the route.
United: Providing services to Lambert-St. Louis International Airport (STL), United contributes about 15% of arrivals to Frontenac. The average one-way fare is estimated at $320, with the potential for first-class service on select routes.
Frontier Airlines: Operating to Lambert-St. Louis International Airport (STL), Frontier Airlines constitutes roughly 5% of arrivals to Frontenac. The average fare for a one-way ticket is about $150, making it a budget-friendly option.

Best time to fly to Frontenac

The most popular months for travelers to fly to Frontenac are January, March, and April, when peak temperatures in Frontenac can reach up to 56.1°F in April. If you prefer quieter travel, consider September, the least busy time to visit with temperatures around 71.2°F and typically the lowest average one-way fare (around $222), roughly 9% cheaper than the yearly average. Looking for additional cheaper months to fly? October, May, and August offer average one-way fares of around $230, making them good options for flexible travelers.

Month	Temperature	Precipitation	Cloudiness	Demand	Average one-way Fare
January	31.5°F (-0.3°C)	Light Rain	Mostly Cloudy	Moderately High	$277
February	34.5°F (1.4°C)	Light Rain	Mostly Sunny	Average	$245
March	46.4°F (8.0°C)	Light Rain	Mostly Sunny	Moderately High	$273
April	56.1°F (13.4°C)	Light Rain	Mostly Sunny	Moderately High	$249
May	66.6°F (19.2°C)	Light Rain	Mostly Sunny	Average	$229
June	76.3°F (24.6°C)	Light Rain	Mostly Sunny	Average	$258
July	79.0°F (26.1°C)	Light Rain	Mostly Sunny	Average	$251
August	77.4°F (25.2°C)	Light Rain	Mostly Sunny	Average	$235
September	71.2°F (21.8°C)	Light Rain	Mostly Sunny	Moderately Low	$222
October	58.6°F (14.8°C)	Light Rain	Mostly Sunny	Average	$225
November	46.2°F (7.9°C)	Light Rain	Mostly Sunny	Moderately Low	$243
December	37.6°F (3.1°C)	Light Rain	Mostly Sunny	Moderately Low	$249

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

How to save money on a flight to Frontenac

Getting some of the best deals on flights to Frontenac is all about timing and flexibility. Here are some key tips to help you save:

Compare flight options—use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
Set up price alerts—as an Expedia member you can use Price Tracking to receive notifications when flight prices change.
Bundle and save—book a flight and unlock a hotel deal on Expedia*, or explore our Frontenac hotel and flight deals.
Think about luggage-nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your baggage allowance before confirming your booking to avoid excess baggage fees at the airport.
Earn miles—you can earn airline miles when you book your Frontenac flight with Expedia. Just select your frequent flyer program and enter your program number when confirming your booking.

*For members. Select hotels.

Arriving in Frontenac

Frontenac welcomes travelers through its range of transport options based on price, convenience, and proximity. Here's how to reach Frontenac efficiently:

Public transportation: From Lambert-St. Louis International Airport, Lambert Main Terminal Station, a metro station, is conveniently located just 0.1 miles from the airport, making it easily accessible for travelers.
Hotel transfer: Transfers offer a convenient way to reach your hotel in Frontenac, with options including free hotel shuttles and private rides, which can be arranged in advance.
Car rental: Renting a car in Frontenac is a good option if you plan to explore and sightsee beyond the city. Browse cheap car rentals in Frontenac on Expedia.
Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.

Where to stay around Frontenac

Brentwood: Located 4 miles away from Frontenac, Brentwood offers a delightful mix of family-friendly activities and urban experiences. Visitors can explore the beautiful Forest Park, perfect for outdoor adventures, or immerse themselves in culture at the St. Louis Art Museum. For those interested in education, Washington University in St. Louis is a modern institution nearby. With shopping centers and recreational areas, Brentwood is a convenient stop for travelers looking to enjoy both city life and nature.
Maryland Heights: Maryland Heights is located 5 miles away from Frontenac and is known for its vibrant entertainment scene. This city features an array of venues, including theaters and an arena for live events. Families can enjoy the lively atmosphere at Westport Plaza, a popular neighborhood filled with dining and shopping options. Additionally, Washington University in St. Louis is nearby, adding to the area's educational appeal. Whether you're seeking leisure or excitement, Maryland Heights has something to offer.
Manchester: Manchester is located 6 miles away from Frontenac and is a great destination for families and outdoor enthusiasts. This city boasts beautiful urban parks and recreational areas, ideal for a day out in nature. Thrill-seekers can visit Six Flags St. Louis for an exciting amusement park experience. With its blend of shopping centers and local attractions, including easy access to Washington University in St. Louis, Manchester is perfect for those wanting both adventure and relaxation during their travels.

Tips for short-haul flights to Frontenac

For quick getaways, efficiency is key. Here is how to make your short-haul journey smoother:

Pack light and skip checked bags—when flying with budget airlines, it's often more economical to travel with just a carry-on. Optimize your packing by using mini toiletries, wearing your heaviest clothing, and planning your outfits thoughtfully. This strategy also allows you to bypass the wait at baggage claim upon arrival.
Bring your own entertainment—many short-haul flights may lack in-flight entertainment options. To keep yourself entertained, download TV shows, movies, music, or podcasts ahead of time, and consider bringing a book as well. Remember to fully charge your devices before you board.
Arrive at the airport in plenty of time—even for short or domestic flights, it's advisable to arrive at least 1.5 to 2 hours prior to departure, taking into account traffic and security lines.
Bring your own snacks and water—pack some snacks and a refillable water bottle to stay hydrated and save money while at the airport.

Tips for long-haul flights to Frontenac

Flying long-haul sometimes requires extra planning to ensure a comfortable journey:

Select your seat in advance—for long flights, choosing your seat is essential for comfort. Full-service airlines often provide complimentary seat selection once online check-in opens, typically 24–48 hours before your flight. Some airlines may allow seat selection even earlier.
Arrive at the airport in plenty of time—aim to arrive at the airport at least 3 hours prior to departure for international flights to accommodate check-in, security, and immigration processes.
Relax at the airport—if you have extra time, take the opportunity to explore the shops, grab a coffee, or unwind at the gate or in a departure lounge if you have access. Airport Wi-Fi is generally free and available.
Adjust to the new time zone mid-flight—begin syncing your body clock by changing your watch and sleep schedule to align with your destination's time zone. Try to sleep or stay awake during the flight according to the local time at your arrival location to help minimize jet lag.

Frequently asked questions

What month is the cheapest to fly to Frontenac?

The cheapest month to fly to Frontenac is when there's less demand. Off-peak months are typically when you'll find cheap fares. To save money, avoid flying during public and school holidays.

Which US cities have the cheapest flights to Frontenac?

Chicago, Dallas and Denver usually offer cheap flights to Frontenac. Bear in mind that prices vary based on factors like demand, time of year and number of stopovers.

Which US cities fly direct to Frontenac?

There are 55 US cities you're able to fly to Frontenac directly from. Compare your options by selecting the "Direct flights only" box on Expedia and find the best starting point for you. Here are several of the major cities to set off from:

Chicago
Dallas
Denver
New York
Atlanta

How to find a cheap flight to Frontenac?

Book early to maximize your chances of getting cheap flights to Frontenac. Also, consider traveling during off-season months like January and February. If you jet off on a Thursday, you'll save an average of 16% compared to departing on a Sunday.* Save time checking every day and create a price alert on the Expedia app. We'll send you a notification when fares drop.*Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.

How to get a cheap last-minute flight to Frontenac?

Although booking in advance is usually the easiest way to save cash, don't panic if your Frontenac vacation is last minute. You can still find cheap flights to Frontenac, especially if your plans have a little wiggle room. Try switching up your travel dates, exploring different ticket types or jetting out of another hub.

How far in advance should I book a flight to Frontenac?

To nab some of the best deals on domestic journeys, book your flight to Frontenac 28 days ahead of your travel dates. For international flights, book two to four months in advance. This increases your chances of securing your preferred departure dates and seats.**Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.

Which day of the week is the cheapest day to buy a plane ticket to Frontenac?

Sundays are generally the best day to book a cheap flight to Frontenac, with savings of around 8% on average compared to a Friday. If you purchase tickets on a Friday, expect to pay a higher price as this is often the most expensive day.**Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.

Which airlines fly to Frontenac?

A total of 10 airlines connect 33 airports across the world to Frontenac. Here are a few of the most popular airlines to Frontenac, where Lambert-St. Louis Intl. Airport (STL) is the chief entry point:

Delta Air Lines
American Airlines
United Airlines
Southern Airways Express

Where do you fly into Frontenac?

Lambert-St. Louis Intl. Airport (STL) is the main airport for travelers flying to Frontenac. Or you can land at Spirit of St. Louis Airport (SUS). Compare fares between these airports to find the most convenient or cost-effective way to fly to Frontenac.

How far is the airport from central Frontenac?

You'll be about 8 mi north of the center of Frontenac after touching down at Lambert-St. Louis Intl. Airport (STL).

Can I save money by booking a Frontenac trip package?

Book a Frontenac flight and hotel package deal on Expedia, and you could benefit from significant savings. It's easy to bundle your flight and hotel, and you can also add car rentals and tours to create your own customized Frontenac trip. Plus, nothing beats the convenience of booking everything in the same place.

Can I change or cancel my flight to Frontenac?

You can usually change or cancel your flight to Frontenac within 24 hours of booking. However, keep in mind that some flights are non-refundable. In those cases, you may be issued a credit toward a future trip in place of a direct refund. Make sure you check the airline's rules and restrictions in your itinerary for exact details. You can use Expedia's "No cancel fee" or "Changes included" filters during your search to find cheap flights to Frontenac with flexible change policies. For additional information, head to our Customer Service Portal.

*Flight schedules are subject to change.

*Available to One Key members.

Book with confidence

Tips to find the cheapest flights to Frontenac

The cheapest day to fly

Get started finding a cheap flight to Frontenac on Expedia by either choosing a deal on this page or entering into the search bar your travel dates, origin airport, and whether you want roundtrip or one-way airfare. You can filter for flexibility, number of stops, airline, and departure/arrival times to find the best flight for you.

The cheapest month to fly

is the cheapest month to fly to Frontenac. This coincides with the low season when fewer people travel. Whichever month you travel in, though, be sure to book at least a month in advance if you want to score cheap tickets to Frontenac. ARC's data shows that domestic flights booked 28 days or more before departure are typically 24% cheaper than those booked last minute.

The most affordable time to book a flight

Typically, a Sunday can be the cheapest time to book a flight to Frontenac, according to ARC’s data. On average, you could save between 6% and 13% by booking on a Sunday instead of a Friday, which is the most expensive day to make a reservation.

The cheapest round-trip tickets to Frontenac

The lowest price for round-trip flights to Frontenac in 2026 starts from , while one-way tickets start from . Expedia's effective search tool is one of the best ways to find a budget airfare. Simply enter your dates, and within seconds, it'll show you a vast selection of the cheapest flights to Frontenac. If you have a preferred departure time or airline, you can use the handy filters to customize your search.

The cheapest airlines flying to Frontenac

are just some of the airlines that can typically offer cheap tickets to Frontenac. You can find their most affordable flights by using the “airline” search filter and then sorting prices from low to high. As a trusted partner of the world's leading airlines, Expedia offers you some of the best airfare deals to Frontenac and countless more destinations worldwide.

The most affordable airports to fly into

To view the cheapest airports to fly into for Frontenac, simply order your search results from lowest to highest price. Expedia's search tool compares flight prices for all airports close to your destination, so you don't have to manually search them one by one to find the cheapest flight to Frontenac. If you have a preferred place to fly into, take advantage of the “arrival airport” filter to narrow down your search on Expedia.

Save with a package

With Expedia's amazing package deals, you could save hundreds of dollars by booking your Frontenac plane tickets together with your accommodations, car rental, or activities. Just select the search wizard's “package” option to view some of the cheapest deals. Look out for the green savings label to see how much you're saving.

Date flexibility for the cheapest flights to Frontenac

If you can be flexible with your travel dates, it's a good idea to broaden your search by comparing prices on different days. This will open up more options, meaning you could uncover a less expensive flight to Frontenac.

Stopover savings

The cheapest tickets to Frontenac are sometimes those with a stopover. Book one of these flights, and you'll change planes at an airport en route to Frontenac. While the overall travel time might be longer than a non-stop flight, you may decide it's worth it for the money saved.

Get Expedia's Price Drop Protection

Price Drop Protection means that if your flight gets cheaper after booking, you'll be credited the difference*. This gives you peace of mind that you're getting one of the cheapest flights to Frontenac for your chosen departure. Expedia's Price Drop Protection is available for a small fee but is free to One Key Gold and Platinum tier members.

*Terms apply.

Use our Price Tracking feature

Expedia's Price Tracking feature is another great tool that removes the guesswork from finding cheap flights to Frontenac. Simply download the free Expedia app to your smart device and activate Frontenac flight price alerts for your travel dates. There's even a price predictor tool that uses historical data to indicate the best time to book, giving you peace of mind that you'll nab the lowest prices.

Book with Expedia

As well as Price Drop Protection and Price Tracking, Expedia's close partnership with a vast selection of the world's leading airlines means you're sure to find cheap flights to Frontenac. Plus, the One Key rewards program lets you earn real cash rewards on most bookings that you can use to save money on future trips. Best of all, it's free to join, and members often unlock exclusive discounts, too.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Travel information

Destination airport	Frontenac
Destination airport IATA code	STL

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Cheap Flights to Frontenac, MO

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