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Cheap Flights to St Mary

View ฿21,030 flight on Sat, 26 Sept 2026Opens in a new window

Popular airlines to St Mary

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Cheap round-trip flights to St Mary

Prices were available within the past 7 days and start at ฿21,030 for one-way flights and ฿36,035 for round trip, for the period specified. Be sure to select the 'Direct flights only' box above if you are looking for a non stop route. Prices and availability are subject to change. Additional terms apply.

Air Canada
STARLUX Airlines
Cathay Pacific
Lufthansa
Qatar Airways

Frequently asked questions

What is the name of St Mary's airport?
Lambert-St. Louis Intl. Airport (STL) is the main airport in St Mary.
How many airlines fly to St Mary?
There are a total of 12 airlines connecting St Mary to 61 airports across the globe.
Which airlines fly to St Mary?
United Airlines and American Airlines are some of the most well-known airlines with flights to St Mary. Most travellers use Chicago as a departure point with United Airlines flying this route the most.
How many nonstop flights are there to St Mary?
Flying to somewhere new is much easier when there aren't any stopovers involved. If you're travelling to St Mary, the great news is that there are 1,206 direct flights every week.
Where are the most popular flights to St Mary departing from?
Flights to St Mary departing from Chicago, Dallas and New York airports are always popular.
How long is the flight to St Mary Airport?
Which city you depart from determines how long you'll be strapped into your seat. From Chicago to St Mary, the average flight time is 1 hour and 22 minutes. From Dallas it's more like 1 hour and 43 minutes, and from New York it's 3 hours and 1 minute.
How to book the cheapest flight to St Mary?
If you'd like to save some cash on your St Mary holiday, then listen up! As every seasoned traveller will tell you, don't book at the very last minute. Airfares are often highest close to the departure date. Don't stop there, though. Do some research and check if there is more than one airport at your destination. Ticket prices often differ depending on which airport you go for. Make sure you compare fares across airlines too. Last of all, another simple way to save some money is be ready to book fast. If you find a fantastic bargain, don't hesitate — snap it up while the opportunity's there.
Do you have any tips for my flight to St Mary?
We've got the lowdown on how to make your journey a pleasant experience. Follow our insider tips and you'll be hightailing it through airport security and enjoying St Mary in no time. What to pack in your hand luggage:
  • First and foremost, pack your passport, travel documents, credit cards and medications. Next, you'll need some extra in-flight entertainment to while away the time. A thrilling novel and a phone crammed with your favourite movies are some fantastic options. If you plan to catch more than just forty winks, a quality neck pillow and some noise-cancelling headphones will also be useful. Finally, leave some space for a toothbrush and some cleansing wipes so you'll arrive feeling fresh and raring to go.
Do not pack the following items in your hand luggage:
  • Check carefully that you don't have a Swiss Army knife lurking in one of the compartments of your hand luggage. Other prohibited items include flammable or explosive goods, such as fuel and matches, and gels and liquids in containers with a volume of more than 3.4 ounces (100 millilitres).
What to wear on a flight:
  • Your main aim is to be as comfortable as you can. Opt for shoes that are easy to pull on and off, dress in loose, natural-fibre clothing and don't forget to take a sweater in case you get chilly in the cabin.
  • Deep vein thrombosis (DVT), a blood clotting condition caused by prolonged inactivity, can be a risk on long-haul flights. Walk around the cabin and give your legs a stretch or do some gentle exercises in your seat to improve your circulation.
How to get through airport security fast when flying to St Mary?
The secret is to be well organised before you reach the airport security gate. That way, you'll be boarding that plane to St Mary in a flash. Follow these tips and get your holiday off to a fantastic start:
  • Be sure to have your passport and travel documents within easy reach. They're the first items you'll be asked to show at security.
  • 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 earphones or headphones, as well as heavy coats or jackets. They'll all need to go on the X-ray conveyor belt.
  • For just a few moments, you'll have to unplug from technology. Your phone, tablet and any other electronic gadgets will need to go through the scanner.
  • Travelling with your favourite perfume or cologne? No problem. As long as the volume is no greater than 3.4 ounces (100 millilitres) and it's stored in a clear zip-lock bag, you're permitted to bring it with you in your carry-on baggage.
  • There's a chance you'll be required to take your shoes off for scanning, so wearing slip-on sneakers is always a good idea.
  • Pocket knives and other sharp items can't be taken on board. They'll be seized at security, so put them in your checked suitcase.

Book with confidence

Flights to St Mary

Searching for cheap flights to St Mary? No travel company presents more choices than Expedia if you're looking to compare flights to St Mary. With more airlines, cheaper flights, fewer stops, and more departure and arrival times travellers should ensure they search on Expedia before any holiday to St Mary. Expedia provides the cheapest flights to St Mary and you may find even greater savings if you combine your flight to St Mary with a hotel stay. Travellers who are flexible about flight times can benefit from last minute cheap flights to St Mary.

Expedia is the largest online travel agency which means that Expedia have access to cheap airline tickets. So make sure you check Expedia regularly for these bargain flights because the cheapest airline ticket deals sell out fast.

Expedia is not only free for everyone to use but it quick and easy to use. Find the lowest flight prices guaranteed and book directly through Expedia. Browse through hundreds of cheap flight offers to find the one that suits your budget by simply inputting your travel dates. Expedia will then find the cheapest flights to St Mary for that period and let you choose your preferred time and airline.

Travel information

Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Destination city name
St. Louis
Return price
฿36,035
*Available to Expedia members.