Title: Cheap United fights from St. Louis to Shannon - Expedia.ca ![Adobe](https://images.trvl-media.com/place/3229/c184ea28-b6d2-406d-b2b3-64d892371946.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 United fights from St. Louis (STL) to Shannon (SNN) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ![notification illustration](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\* ![deals illustration](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\* ![trophy illustration](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) Flight from St. Louis to Shannon (STL - SNN) route information | Origin airport | Lambert-St. Louis Intl. | | --- | --- | | Destination airport | Shannon | | Distance | 6122 km | ## Frequently asked questions ### How much is a United Airlines flight from Lambert-St. Louis Intl. Airport (STL) to Shannon Airport (SNN)? > Make use of the "Price (lowest to highest)" filter on Expedia to look for cheap United Airlines round-trip flights from STL to SNN. Affordable one-way options are available as well.\**\*These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.* ### What is the cheapest month to fly from STL to SNN with United Airlines? > Browse for one-way or return flights to Shannon in January or February. You could find a cheap fare with United Airlines during these off-season months. ### Does United Airlines fly nonstop from Lambert-St. Louis Intl. Airport (STL) to Shannon Airport (SNN)? > Enter your dates, click search and use the "Nonstop" filter on Expedia to find any direct flights from STL to SNN with United Airlines or other airlines. ### What airports does United Airlines fly into in Shannon? > Shannon Airport (SNN) is the main Shannon hub for United Airlines flights from Lambert-St. Louis Intl. Airport (STL). ### Can I change or cancel my United Airlines flight from Lambert-St. Louis Intl. Airport (STL) to Shannon Airport (SNN)? > Typically, you can reschedule or cancel your flight, although additional charges may apply if your booking was made more than 24 hours ago. Need to keep your options open? Use our "Changes included" or "No cancel fee" filter to find flights that won't penalize you if you have to alter your plans. To make modifications, visit "[Trips](https://www.expedia.ca/trips)," select your flight and click on "Manage Booking" for more information. ## Explore a world of travel with Expedia \*Available to Expedia members.