Cheap Flights to St. Clair: St. Clair Flight Deals

View €43 flight on Sat, 17 Jan 2026Opens in a new window

Popular airlines to St. Clair

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Cheap round-trip flights to St. Clair

Prices were available within the past 7 days and start at €43 for one-way flights and €85 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, 17 Jan - Sun, 18 Jan
ORD
Chicago
STL
St. Louis
€85 Return, just found
€85
Return
just found
Select American Airlines flight, departing Sat, 17 Jan from Chicago to St. Louis, returning Sun, 18 Jan, priced at €85 just found
Delta
Sat, 17 Jan - Sun, 18 Jan
MDW
Chicago
STL
St. Louis
€136 Return, just found
€136
Return
just found
Select Delta flight, departing Sat, 17 Jan from Chicago to St. Louis, returning Sun, 18 Jan, priced at €136 just found
United
Sat, 17 Jan - Sun, 18 Jan
ORD
Chicago
STL
St. Louis
€137 Return, just found
€137
Return
just found
Select United flight, departing Sat, 17 Jan from Chicago to St. Louis, returning Sun, 18 Jan, priced at €137 just found
Swiss International Air Lines
Mon, 19 Jan - Sun, 25 Jan
FRA
Frankfurt
STL
St. Louis
€526 Return, found 2 days ago
€526
Return
found 2 days ago
Select Swiss International Air Lines flight, departing Mon, 19 Jan from Frankfurt to St. Louis, returning Sun, 25 Jan, priced at €526 found 2 days ago
Lufthansa
Mon, 19 Jan - Sun, 25 Jan
FRA
Frankfurt
STL
St. Louis
€534 Return, found 2 days ago
€534
Return
found 2 days ago
Select Lufthansa flight, departing Mon, 19 Jan from Frankfurt to St. Louis, returning Sun, 25 Jan, priced at €534 found 2 days ago

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

October is typically the cheapest month to fly

From €119 - €390 per traveller.

Expedia.ie is an online travel company that specialises in securing the best prices for flights to St. Clair. With Expedia you get highly specialised services, combining the best of technology, in-depth knowledge and the best connections in order to offer great deals to St. Clair. Expedia shares your passion for travel and has built the best online travel service that promotes and encourages travel. Whether you are looking for cheap flights to St. Clair, or are just on the lookout for the best flights to St. Clair, you are sure to find the best deals with Expedia.ie.

"One of the many benefits of booking your flights through Expedia is that we are one of the world’s largest online travel agency, which means we use our collective experience and work tirelessly to bring you the best prices. With Expedia you get a user-friendly internet experience and a dedicated customer support service that ensures that everything goes smoothly. The goal of Expedia is to offer premium services at the lowest price, all at one single place. If you wish to save even more try combing a hotel in St. Clair to your flight and create a personalised low cost city break or holiday to your favourite destination. Book early and you could save even more!

If you have an Expedia.ie itinerary number and have a question or concern about your travel plans you can call us on (01) 524 5005 from 8am - 10pm Monday to Friday, and 9am - 10pm at weekends and an Expedia agent will help you.

Frequently asked questions

What is the name of St. Clair's airport?
St. Clair is served by a single airport, Lambert-St. Louis Intl. Airport (STL).
What airport is best to fly into St. Clair?
Travellers from all around the world pass through Lambert-St. Louis Intl. Airport (STL) each day. Jump off the plane, grab your bags and you'll be 72 kilometres from downtown St. Clair.
How many airlines fly to St. Clair?
St. Clair is serviced by 12 airlines from 61 airports around the world.
Which airlines fly to St. Clair?
United Airlines and American Airlines operate the majority of flights to St. Clair. One of the most common ways to travel there is on a United Airlines flight leaving from Chicago.
How many nonstop flights are there to St. Clair?
Flying to a new place is much simpler when there aren't any annoying stopovers. If you're heading to St. Clair, the good news is that there are approximately 1,206 direct flights operating every week.
Where are the most popular flights to St. Clair departing from?
Flights to St. Clair from Chicago, Dallas and New York airports are the most popular.
How long is the flight to St. Clair Airport?
If it's Chicago you're departing, you'll be airborne for around 1 hour and 22 minutes before you arrive in St. Clair. Runway to runway from Dallas typically takes 1 hour and 43 minutes and from New York, 3 hours and 1 minute.
How to book the cheapest flight to St. Clair?
Don't leave booking your flight to St. Clair until the very last minute. That's one move well-versed travellers use to get the best prices. Booking in advance means more options and cheaper flights. Another good way to grab the most affordable fare is to compare all options. If where you're headed has multiple airports, be sure to look into the cost of flying into a less busy terminal. Lastly, another simple way to save a few dollars is be ready to book at a moment's notice. If you spot a fantastic bargain, don't think twice — grab it while you've got the chance.
Do you have any tips for my flight to St. Clair?
Wherever you're coming from, flying can be a seamless experience if you've prepared well. We've compiled a list of handy travel tips that will help get your St. Clair escape started on the right note. What to pack in your hand luggage:

  • Travelling on a plane can be easy if you take the right stuff. Firstly, you'll want a few toiletry items, such as deodorant, toothpaste and a toothbrush, a clean pair of socks and a good novel. Next, leave space in your bag for your mobile phone, a charger, any daily medications and perhaps a blow-up neck pillow as well. Lastly, remember to bring your passport, travel docs and your bank cards.

Do not pack the following items in your hand luggage:

  • Make sure you don't have sharp or pointed objects hiding in the bottom of your carry-on luggage. Other prohibited items include flammable or explosive goods, such as fuel and matches, and gels and liquids in containers larger than 3.4 ounces (100 millilitres).

What to wear on a flight:

  • The aisles of a plane are no place for a fashion parade. Dress in comfortable layers and choose shoes that are roomy, flat and easy to take on and off.
  • You've probably heard about deep vein thrombosis (DVT), a blood clot condition caused by prolonged periods of inactivity. To minimize your risk on board, drink plenty of water, consider wearing compression tights or socks and move your lower limbs often.

How to get through airport security fast when flying to St. Clair?
Being organised before your flight will make your trip to St. Clair a piece of cake. Below are some handy hints for a speedy journey through security:

  • First things first. Your boarding pass and travel ID will need to be shown to security personnel. Have them easily accessible to avoid fumbling around for them.
  • Next up is the X-ray machine. Remove anything metal on you that is likely to beep. This includes things like headphones or earphones, as well as bulky coats or jackets. They'll need to be placed on the conveyor belt for screening.
  • Your electronic gadgets like laptops and phones will also have to go on a tray for inspection. Don't worry, you'll be back online before you know it.
  • Any gels or liquids, such as perfume or hairspray, that you want to bring on board need to be in containers no greater than 3.4 ounces (100 millilitres). Also, they all must fit inside a quart-size (one litre), clear zip-lock bag.
  • Lightweight sneakers are a good footwear choice as you're less likely to be required to remove them when going through security. Hiking boots and heavier-style shoes are usually subjected to extra screening.
  • Take all prohibited items out of your carry-on bag. If you have any sharp or pointed objects, put them in your checked luggage. They won't be allowed on board and will be confiscated.

Flights to St. Clair information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Destination city name
St. Louis
Return price
€84

Trending flights to St. Clair

Prices were available within the past 7 days and start at €43 for one-way flights and €85 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Scandinavian Airlines
Sun, 11 Jan - Sat, 17 Jan
DUB
Dublin
STL
St. Louis
€668 Return, found 2 days ago
€668
Return
found 2 days ago
Select Scandinavian Airlines flight, departing Sun, 11 Jan from Dublin to St. Louis, returning Sat, 17 Jan, priced at €668 found 2 days ago
*Available to Expedia members.