Title: Cheap Flights to St. Marys , IA from CA $227 - Expedia.ca ![Default HTG hotel image](https://a.travel-assets.com/travel-assets-manager/fallback-images-brand/bex_flights_v2.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://a.travel-assets.com/travel-assets-manager/fallback-images-brand/bex_flights_v2.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights to St. Marys , IA from CA $227 [View CA $227 flight on Wed, Jun 3, 2026](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:YHZ,to:DSM,departure:03/06/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:226.32&airProductToken=AQpnCjIIwYIBEgQxMzIzGPjJASDvWSiX3o4DMKPfjgM4QkAAWAFqBUJBU0lDcghPVUFDWlNCVgoxCMGCARIENDQwNhjvWSDDZCie4Y4DMNLijgM4QkABWAFqBUJBU0lDcghPVUFDWlNCVhIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) [Hotels in St. Marys](https://expedia.ca/St-Marys-Hotels.d553248634983299478.Travel-Guide-Hotels)[St. Marys Car Rentals](https://expedia.ca/Car-Rentals-In-St-Marys.d553248634983299478.Car-Rental-Guide)[St. Marys Vacation Packages](https://expedia.ca/St-Marys.d553248634983299478.Destination-Travel-Guides) ## Popular airlines - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:St. Marys, Iowa, United States of America,departure:18/04/2026TANYT&leg2=from:St. Marys, Iowa, United States of America,to:CMH,departure:25/04/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:St. Marys, Iowa, United States of America,departure:18/04/2026TANYT&leg2=from:St. Marys, Iowa, United States of America,to:CMH,departure:25/04/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:St. Marys, Iowa, United States of America,departure:18/04/2026TANYT&leg2=from:St. Marys, Iowa, United States of America,to:CMH,departure:25/04/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WN.svg) Southwest Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:St. Marys, Iowa, United States of America,departure:18/04/2026TANYT&leg2=from:St. Marys, Iowa, United States of America,to:CMH,departure:25/04/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AS.svg) Alaska Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:St. Marys, Iowa, United States of America,departure:18/04/2026TANYT&leg2=from:St. Marys, Iowa, United States of America,to:CMH,departure:25/04/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_F9.svg) Frontier Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:St. Marys, Iowa, United States of America,departure:18/04/2026TANYT&leg2=from:St. Marys, Iowa, United States of America,to:CMH,departure:25/04/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F9"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AC.svg) Air Canada [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:St. Marys, Iowa, United States of America,departure:18/04/2026TANYT&leg2=from:St. Marys, Iowa, United States of America,to:CMH,departure:25/04/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) ## How much is the cheapest flight to St. Marys? Prices were available within the past 7 days and start at CA $227 for one-way flights and CA $377 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Sat, Jun 13 - Sat, Jun 27 YHZ Halifax DSM Des Moines CA $377 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YHZ,to:DSM,departure:13/06/2026TANYT&leg2=from:DSM,to:YHZ,departure:27/06/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:376.38&airProductToken=AQppCiEIxJgBEgQ1NDc0GPjJASDLASj6yo8DMP_LjwM4RUAAWAEKIQjEmAESBDEwNzgYywEg47QBKOXMjwMw3c2PAzhFQAFYAQohCMSYARIENTM0NRjjtAEgw2QogNCPAzD10I8DOEVAAVgBCmYKIAjEmAESBDI3MjcYw2Qg4Fwoi-mQAzCM6pADOEVAAFgBCh8IxJgBEgM0NjAY4FwgywEomuyQAzCl7ZADOEVAAVgBCiEIxJgBEgQ1NDg4GMsBIPjJASjz7pADMPTvkAM4RUABWAESCggBEAEYASoCREwYASIECAEQASgEMAE) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Sep 2 - Tue, Sep 22 YHZ Halifax DSM Des Moines CA $394 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YHZ,to:DSM,departure:02/09/2026TANYT&leg2=from:DSM,to:YHZ,departure:22/09/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:393.19&airProductToken=AQppCiII1YIBEgQzNjMwGPjJASDEjQEouNqWAzDG25YDOE5AAFgBCiEI1YIBEgQxNTI1GMSNASCuHCjB3JYDMOTdlgM4TkABWAEKIAjVggESBDI4MzYYrhwgw2QoiN6WAzDZ3pYDOE5AAVgBCmkKIAjVggESBDE0MTAYw2Qgrhwot76YAzCcv5gDOE5AAFgBCiEI1YIBEgQyMzI1GK4cIMSNASjzv5gDMIjBmAM4TkABWAEKIgjVggESBDM2OTQYxI0BIPjJASiUwpgDMJjDmAM4TkABWAESCggBEAEYASoCVUEYASIECAEQASgEMAE) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Thu, May 21 - Thu, May 28 YHZ Halifax DSM Des Moines CA $451 Roundtrip found 10 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YHZ,to:DSM,departure:21/05/2026TANYT&leg2=from:DSM,to:YHZ,departure:28/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:450.32&airProductToken=AQpFCiEIwYYBEgQzNTgzGPjJASCuHCiGzY0DMO_OjQM4R0AAWAEKIAjBhgESBDM5ODMYrhwgw2QontCNAzCA0Y0DOEdAAVgBCkUKIAjBhgESBDQyMjgYw2Qgrhwo1JeOAzC4mI4DOEdAAFgBCiEIwYYBEgQzNDYzGK4cIPjJASjsmY4DMLKbjgM4R0ABWAESCggBEAEYASoCQUMYASIECAEQASgIKAQwAQ) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Wed, Jul 1 - Tue, Jul 14 YHZ Halifax DSM Des Moines CA $461 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YHZ,to:DSM,departure:01/07/2026TANYT&leg2=from:DSM,to:YHZ,departure:14/07/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:460.39&airProductToken=AQpFCiEIwYIBEgQ0NTc1GPjJASDLASi6mZEDMMSakQM4T0AAWAEKIAjBggESBDQzOTUYywEgw2QouJuRAzCHnZEDOE9AAVgBCkUKIAjBggESBDQ0NjMYw2Qg71kotqiSAzDXqZIDOE9AAFgBCiEIwYIBEgQzMDUxGO9ZIPjJASiLqpIDMIyrkgM4T0ABWAESCggBEAEYASoCQUEYASIECAEQASgIKAQwAQ) ![WestJet](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/WS.gif) Mon, Aug 31 - Mon, Sep 7 YHZ Halifax DSM Des Moines CA $473 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YHZ,to:DSM,departure:31/08/2026TANYT&leg2=from:DSM,to:YHZ,departure:07/09/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:472.99&airProductToken=AQpHCiII16YBEgQxMDUwGPjJASDjtAEo9seWAzCgyZYDOExAAFgBCiEI16YBEgQ3MDIyGOO0ASDDZCi7ypYDMKnLlgM4TEABWAEKRwohCNemARIENzI3MRjDZCDjtAEok5WXAzD-lZcDOExAAFgBCiII16YBEgQxMDUxGOO0ASD4yQEospiXAzDNmZcDOExAAVgBEgoIARABGAEqAldTGAEiBAgBEAEoBDAB) ## Frequently asked questions ### What is the name of St. Marys' airport? ### How far is Des Moines Intl. Airport (DSM) from central St. Marys? ### What airport is best to fly into St. Marys? ### How many airlines fly to St. Marys? ### Which airlines fly to St. Marys? ### How many nonstop flights are there to St. Marys? ### Where are the most popular flights to St. Marys departing from? ### How long is the flight to St. Marys Airport? ### How to book the cheapest flight to St. Marys? ### Do you have any tips for my flight to St. Marys? > - 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? > - 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 Expedia.ca gives you the best tools to secure great deals on flights to St. Marys. Use our easy and convenient booking engine to browse nonstop flights and convenient departure points every day of the year. Search airfares from the top airlines to book your perfect flight to St. Marys. Whatever your travel needs, you can always rely on Expedia.ca to help you find cheap flights to St. Marys. Using our booking engine is simple - just type in your points of travel and preferred dates and Expedia.ca does the rest! If your travel times are flexible, you can find even better bargains by adjusting your flight dates. Browse connecting flights to increase your chances of finding even lower fares. Thanks to Expedia's Best Price Guarantee, you can book your St. Marys flights with full confidence knowing that you've found the best deal online. Expedia.ca makes the booking process easy and stress-free by offering support along the entire way. Our friendly staff is available 24 hours a day to provide assistance and help you book your ticket. Call us toll-free at 1-888-397-3342 to answer any questions that you may have about your trip to St. Marys. Looking to save even more? Get additional savings by bundling your St. Marys flight with a hotel and/or car rental to create a bargain travel package. Early birds can discover terrific savings by booking in advance while last minute travelers can enjoy great last minute deals. With Expedia.ca, there's no shortage of options to save even more on your St. Marys trip! ## Travel information | Destination airport | Des Moines Intl. | | ----------------------------- | ---------------- | | Destination airport IATA code | DSM | | Destination city name | Des Moines | | Roundtrip price | CA $376 | ## Trending flights to St. Marys Prices were available within the past 7 days and start at CA $227 for one-way flights and CA $377 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Sat, Jun 13 - Sat, Jun 27 YHZ Halifax DSM Des Moines CA $377 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YHZ,to:DSM,departure:13/06/2026TANYT&leg2=from:DSM,to:YHZ,departure:27/06/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:376.38&airProductToken=AQppCiEIxJgBEgQ1NDc0GPjJASDLASj6yo8DMP_LjwM4RUAAWAEKIQjEmAESBDEwNzgYywEg47QBKOXMjwMw3c2PAzhFQAFYAQohCMSYARIENTM0NRjjtAEgw2QogNCPAzD10I8DOEVAAVgBCmYKIAjEmAESBDI3MjcYw2Qg4Fwoi-mQAzCM6pADOEVAAFgBCh8IxJgBEgM0NjAY4FwgywEomuyQAzCl7ZADOEVAAVgBCiEIxJgBEgQ1NDg4GMsBIPjJASjz7pADMPTvkAM4RUABWAESCggBEAEYASoCREwYASIECAEQASgEMAE) \*Available to Expedia members.