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Cheap Flights to St. Marys , IA from CA $199

View CA $199 flight on Thu, Sep 24, 2026Opens in a new window

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How much is the cheapest flight to St. Marys?

Prices were available within the past 7 days and start at CA $199 for one-way flights and CA $399 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
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United
WestJet
Alaska Airlines

Find the cheapest month to fly from Columbus (CMH) to Des Moines (DSM)

From CA $268 - CA $818 per traveller.

Frequently asked questions

What is the name of St. Marys' airport?
St. Marys has one main airport, Des Moines Intl. Airport (DSM).
How far is Des Moines Intl. Airport (DSM) from central St. Marys?
Lengthy commutes aren't a big deal if you plan ahead for them. Downtown St. Marys is 26 kilometres from Des Moines Intl. Airport, so it's smart to know how to get to the city before you land.
What airport is best to fly into St. Marys?
With one major airport operating in St. Marys, it won't take very long to get your hands on the best flight. You'll be jetting off to Des Moines Intl. Airport, which sits around 26 kilometres from the centre of town.
How many airlines fly to St. Marys?
There are 6 air carriers that service St. Marys from 24 worldwide airports.
Which airlines fly to St. Marys?
United Airlines and American Airlines fly frequently into St. Marys. Catching a United Airlines flight from Chicago is one of the most preferred ways to travel there.
How many nonstop flights are there to St. Marys?
With roughly 307 direct flights running every week, you'll be touching down in St. Marys before you have time to say, "Are we there yet?"
Where are the most popular flights to St. Marys departing from?
A large number of flights to St. Marys take off from Chicago, Denver and Phoenix airports.
How long is the flight to St. Marys Airport?
If it's Chicago you're departing, you'll be airborne for around 1 hour and 32 minutes before you arrive in St. Marys. Airport to airport from Denver takes approximately 1 hour and 50 minutes and from Phoenix, the average flight time is 2 hours and 49 minutes.
How to book the cheapest flight to St. Marys?
If you want to save some cash on your trip to St. Marys, listen up! As every experienced jet-setter knows, avoid booking at the last minute. Prices are usually more expensive just prior to the departure date. Another good way to nab an unbeatable deal is to research all options. If your destination has a few airports, be sure to look into the cost of flying into a less busy terminal. Last of all, be prepared to secure your seat quickly if you stumble on a real bargain. It might not be available for long! With a bit of know-how and a little luck, the ideal airfare can be yours.
Do you have any tips for my flight to St. Marys?
Depending on where you're coming from, your flight to St. Marys could be as easy as pie or it could drag on forever. We've rounded up some useful travel tips that will help you start your next great adventure on a positive note. What to pack in your hand luggage:
  • It's simple — first, put in your passport, official ID, bank cards and vital medications. Next, you'll want some entertainment to help pass the time. A thrilling novel and a phone filled with your favourite movies are always good options. If you plan to catch up on some sleep, a neck pillow and some noise-cancelling headphones will also be useful. Finally, find room for a toothbrush and some cleansing wipes to ensure you arrive looking fresh and raring to go.
Do not pack the following items in your hand luggage:
  • Squeeze all your full-sized bottles of shampoo and conditioner in your checked baggage. Any liquids in your carry-on suitcase larger than 3.4 ounces (100 millilitres) will be confiscated by authorities. Sharp or pointed objects, like a Swiss Army knife, and dangerous goods which are flammable or explosive, such as aerosol cans, spray paint and strong acids, are also not allowed.
What to wear on a flight:
  • You'll want to choose comfort over style. Prepare for temperature changes in the cabin by layering up, and wear easy-to-remove footwear like slip-ons.
  • Deep vein thrombosis (DVT) can pose a risk on long-distance flights. It results from blood clots forming due to poor circulation, so do some gentle leg and foot exercises in your seat and consider wearing compression tights or socks.
How to get through airport security fast when flying to St. Marys?
A little pre-planning before you get to the airport will make your getaway to St. Marys a piece of cake. Read through our useful tips for a stress-free journey past security:
  • Keep your ID and travel documents someplace easily accessible. They're the first items you'll be asked for by airport security.
  • Your jacket, belt, keys and other items in your pocket, like your headphones, will need to go on a tray through the X-ray machine. Make the whole process easier by removing them before your turn arrives.
  • Your electronic gadgets like phones and laptops will also need to go on a tray for inspection. Don't worry though, you'll be back online in no time.
  • Want to bring along your favourite perfume? Not a problem. As long as the volume is no greater than 3.4 ounces (100 millilitres) and it's stored in a zip-close bag, you can bring it with you in your carry-on.
  • It's also likely that you'll need to remove your shoes to be X-rayed, so wearing slip-on sneakers is always a clever idea.
  • Avoid taking prohibited items in your carry-on bag. If you have any sharp objects like a pocket knife or tools, pack them safely away in your checked baggage. They won't be allowed in the cabin.

Book with confidence

Find Your Flights to St. Marys DSM

Cheap flights to St. Marys (DSM)

Get started finding a cheap flight to St. Marys on Expedia by either choosing a deal on this page or using the search bar to enter your travel dates, origin airport, and whether you want a 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.

We recommend using the ‘Flexible Dates’ calendar at the top of the page to see the price of plane tickets on the surrounding dates. This allows you to pick the cheapest days to fly if your trip allows flexibility and score cheap flight deals to St. Marys.

Roundtrip prices range from CA $399 - CA $763, and one-ways St. Marys start as low as CA $199.

Be aware that choosing a non-stop flight can sometimes be more expensive while saving you time. And routes with connections may be available at a cheaper rate.

Airlines that fly to St. Marys (DSM)

You have several options for which airline you choose to travel with to St. Marys. There are 10 airlines flying into DSM: American Airlines, Delta, Southwest Airlines, United, WestJet, Alaska Airlines. 

Cheap plane tickets may be available from different airlines at different times and with unique terms. It’s best to understand the details of each airline’s offer before judging its value.

For example, if you plan to check a bag or bring a carry-on, check whether the cheap airfare deal includes a baggage allowance. If not, verify whether the baggage fee is higher than the difference of other airline plane ticket deals offering free checked/carry-on baggage in exchange for a slightly higher airfare. 

Additionally, your preferred frequent flyer membership programmes may influence your choice of cheap airline. Expedia allows you to enter your membership numbers during checkout to earn points from your airline and Expedia Rewards—all while getting a great deal and planning all your travel on one online platform.

Find the best deals

At Expedia, we source many flight deals from multiple providers, so you can easily find the best deals that are right for you. A great strategy for getting the best deals can be to make sure you book and travel at optimal times. Airfare to St. Marys (DSM) varies throughout the year based on seasonal demand. You’ll see the lowest rates for roundtrips to DSM in December and in September for one-ways.

Cancellation & flexibility

To change or cancel eligible flights, go to ‘My Trips’ and navigate to your itinerary. If you booked within the last 24 hours, you might be able to cancel your flight for free. Learn more about flight changes or cancellations from our customer service portal. Some plane tickets are available with no change fees, which you can filter for during your search.

Find Your Flights to St. Marys DSM

Travel information

Destination airport
Des Moines Intl.
Destination airport IATA code
DSM
Destination city name
Des Moines
Roundtrip price
CA $398
*Available to Expedia members.