$69 Cheap Flights to St. Clair, MO

Flights to St. Clair at a glance

Flying to St. Clair is easy—choose between full-service and budget airlines, compare travel times, and select the best option for your budget and itinerary as you plan to discover the city's renowned attractions and neighborhoods.

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

Popular airport near St. Clair

St. Clair is a vibrant city perfect for family-friendly outdoor adventures. Travelers are drawn to its scenic beauty and eco-friendly activities. Conveniently, St. Clair is served by a major airport, making it an accessible destination for those seeking adventure and relaxation.

• Lambert-St. Louis International Airport (STL): Nestled in St. Louis County, Missouri, approximately 44 miles from St. Clair, this airport caters to both domestic and international travelers. It connects to around 210 cities across the U.S. and approximately 110 destinations worldwide. Passengers can opt for upgrades to first class, premium economy, or business class seating for enhanced comfort, depending on their chosen route and airline. Major airlines operating here include Southwest Airlines, American Airlines, and Delta.

Top routes to St. Clair

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

Cheapest routes to St. Clair

• Chicago (ORD/MDW) to St. Clair (STL), with cheap one-way fares from around $40
• Kansas City (MCI) to St. Clair (STL), with affordable one-way prices from around $40
• Quincy (UIN) to St. Clair (STL), with low-cost one-way tickets from around $40
• Orlando (MCO) to St. Clair (STL), with cheap one-way fares from around $45
• Denver (DEN) to St. Clair (STL), with cheap 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 St. Clair

• American Airlines: Operating flights to Lambert-St. Louis International Airport (STL), American Airlines represents about 28% of arrivals at St. Clair. The typical one-way fare is around $330, with premium service potentially including first class on select routes.
• Southwest Airlines: Also flying into Lambert-St. Louis International Airport (STL), Southwest Airlines makes up roughly 27% of arrivals to St. Clair. Passengers can expect an average one-way fare of around $240.
• Delta: Providing service to Lambert-St. Louis International Airport (STL), Delta accounts for about 20% of arrivals at St. Clair. The average one-way fare is approximately $290, with premium cabin options like premium economy and first class available on certain routes.
• United: Serving Lambert-St. Louis International Airport (STL), United constitutes around 15% of arrivals to St. Clair. One-way fares average about $320, with potential premium cabin options including first class depending on the flight path.
• Frontier Airlines: Operating flights to Lambert-St. Louis International Airport (STL), Frontier Airlines contributes approximately 5% of arrivals at St. Clair. It is a budget option, with average one-way fares around $150.

How to save money on a flight to St. Clair

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

1. 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.
2. Set up price alerts—as an Expedia member you can use Price Tracking to receive notifications when flight prices change.
3. Bundle and save—book a flight and unlock a hotel deal on Expedia*, or explore our St. Clair hotel and flight deals.
4. 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.
5. Earn miles—you can earn airline miles when you book your St. Clair flight with Expedia. Just select your frequent flyer program and enter your program number when confirming your booking.

*For members. Select hotels.

Arriving in St. Clair

St. Clair welcomes travelers through its range of transport options based on price, convenience, and proximity. Here's how to reach St. Clair 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 St. Clair, with private rides that can be arranged in advance.
• Car rental: Renting a car in St. Clair is a good option if you plan to explore and sightsee beyond the city. Browse cheap car rentals in St. Clair 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 St. Clair

• Union: Located 9 miles away from St. Clair, Union is a charming city that offers a range of outdoor and family-friendly adventures. Popular spots include the exciting Purina Farms, where visitors can enjoy farm-related activities, and the impressive Meramec Caverns, perfect for thrill-seekers. Union also features a convention center and a national state park, making it a great destination for those looking to explore nature and engage in recreational activities.
• Sullivan: Sullivan is located 12 miles away from St. Clair and is an ideal spot for families seeking outdoor fun. Notable attractions include the stunning Meramec State Park, which offers breathtaking scenery and outdoor adventures, and the fascinating Meramec Caverns, a must-visit for cave enthusiasts. The Jesse James Wax Museum adds a cultural touch, making Sullivan a well-rounded destination for various interests.
• Villa Ridge: Situated 11 miles away from St. Clair, Villa Ridge is a delightful city that caters to families and outdoor enthusiasts alike. Visitors can enjoy the thrills at Six Flags St. Louis, a prominent amusement park, or explore the serene Shaw Nature Reserve. With opportunities for skiing and a nearby river, Villa Ridge is perfect for those looking to embrace the great outdoors while also enjoying family-friendly activities.

Tips for short-haul flights to St. Clair

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 bulkiest clothing, and coordinating outfits efficiently. This approach also allows you to bypass waiting at the baggage claim once you arrive.
• Bring your own entertainment—many short-haul flights do not provide in-flight entertainment. To keep yourself occupied, download TV shows, movies, music, or podcasts ahead of time and consider bringing a book. Remember to fully charge your devices before you board.
• Arrive at the airport in plenty of time—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 your favorite snacks and a refillable water bottle to stay hydrated and save money during your time at the airport.

Tips for long-haul flights to St. Clair

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

• Select your seat in advance—for longer flights, choosing your seat is crucial for your comfort. Full-service airlines often provide free seat selection once online check-in opens, typically 24–48 hours prior to your flight. Some airlines may allow seat selection even earlier than this.
• Arrive at the airport in plenty of time—make sure to arrive at the airport at least 3 hours before departure for international flights to accommodate check-in, security, and immigration procedures.
• Relax at the airport—if you have some extra time, take the opportunity to browse the shops, visit a coffee shop, 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 adjusting your sleep schedule to align with your destination's time zone. Aim to either sleep or stay awake during the flight in accordance with the local time at your arrival destination to help minimize jet lag.

Tips to find the cheapest flights to St. Clair

The cheapest day to fly

Get started finding a cheap flight to St. Clair 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

November is the cheapest month to fly to St. Clair. 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 St. Clair. 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 St. Clair, 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 St. Clair

The lowest price for round-trip flights to St. Clair in 2026 starts from $132, while one-way tickets start from from $69. 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 St. Clair. If you have a preferred departure time or airline, you can use the handy filters to customize your search.

The cheapest airlines flying to St. Clair

Southwest Airlines, Frontier Airlines, Delta, United, American Airlines are just some of the airlines that can typically offer cheap tickets to St. Clair. 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 St. Clair and countless more destinations worldwide.

The most affordable airports to fly into

To view the cheapest airports to fly into for St. Clair, 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 St. Clair. 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 St. Clair 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 St. Clair

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 St. Clair.

Stopover savings

The cheapest tickets to St. Clair are sometimes those with a stopover. Book one of these flights, and you'll change planes at an airport en route to St. Clair. 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 St. Clair 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 St. Clair. Simply download the free Expedia app to your smart device and activate St. Clair 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 St. Clair. 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.