Title: Cheap Flights from St. Louis (STL) to Southampton (SOU) - Expedia.ca ![](https://images.trvl-media.com/place/3245/acf3792e-6d54-4d71-86cf-feb4fa305abd.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 from St. Louis (STL) to Southampton (SOU) - [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 ## Popular airlines from Lambert-St. Louis International Airport (STL) to Southampton (SOU) - ![Aer Lingus](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_EI.svg) Aer Lingus [](https://www.expedia.ca/Flights-Search?leg1=from:stl,to:sou,departure:22/10/2025TANYT&leg2=from:sou,to:stl,departure:29/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"EI"}}]) - ![Virgin Atlantic](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_VS.svg) Virgin Atlantic [](https://www.expedia.ca/Flights-Search?leg1=from:stl,to:sou,departure:22/10/2025TANYT&leg2=from:sou,to:stl,departure:29/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"VS"}}]) - ![Delta](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:stl,to:sou,departure:22/10/2025TANYT&leg2=from:sou,to:stl,departure:29/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![KLM](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_KL.svg) KLM [](https://www.expedia.ca/Flights-Search?leg1=from:stl,to:sou,departure:22/10/2025TANYT&leg2=from:sou,to:stl,departure:29/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"KL"}}]) ![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 Southampton (STL - SOU) route information | Origin airport | Lambert-St. Louis Intl. | | --- | --- | | Destination airport | Southampton | | Distance | 6672 km | ## St. Louis to Southampton Flights **The easy way to book your flights from St. Louis to Southampton**  With Expedia, it’s simple to find and book flights to Southampton from St. Louis whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from airlines that cover this route. There are nonstop flights to Southampton, too.   Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from St. Louis to Southampton today, tomorrow, or this week.   **Save dollars with cheap flights from Lambert-St. Louis Intl., STL to Southampton, SOU**  Sort your search results by price to find great deals on your flight from St. Louis to Southampton—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Southampton from St. Louis currently is just rising to .   Here are more money-saving tips:  - Fly in when flight prices are normally at their lowest  - Book about a month to 6 weeks before you travel for the best prices to Southampton   - Avoid peak season and weekends when flights can cost more - Early morning and late-night flights are sometimes cheaper, so try varying your travel times  - One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!  **Reasons to choose Expedia for your flight to Southampton from St. Louis**  Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Southampton with Expedia today. ## Frequently asked questions ### How much is a flight from Lambert-St. Louis Intl. Airport (STL) to Southampton Airport? > Based on fares listed within the last 7 days on Expedia for flights departing within the next year, round-trip flights between Lambert Field and Southampton Airport (SOU) start from . Book now to secure the best price for your big adventure. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from Lambert Field to Southampton Airport (SOU)? > Most flights can be cancelled online, but whether or not you are charged a fee varies between airlines. If you do need to cancel your getaway, follow the instructions in the [Customer Service Portal](https://www.expedia.ca/helpcenter). ### How do I find cheap flights from Lambert Field to Southampton Airport (SOU) that have flexible change policies? > Flights from Lambert Field to Southampton Airport (SOU) offering flexible change policies are available with many airlines. Simply use our "No change fees" filter during your search. You'll only need to cover the fare difference, with no added fees to worry about. ### How far is the flight from Lambert Field to Southampton Airport? > You'll have 6,700 kilometres to cover on the long-haul St. Louis to Southampton route. Dress in comfy clothes and consider taking a sleep mask and earplugs. ### Which airlines fly direct from Lambert-St. Louis Intl. Airport (STL) to SOU? > At present, no airlines offer flights directly from STL to Southampton Airport. You'll need to book a flight with at least one stop. To score the best price and connections, lock in your fare well ahead of time. ### Are Lambert Field to Southampton Airport flight tickets cheaper when they're purchased at the last minute? > Flight prices go up and down like a yo-yo, so there are no guarantees. While last-minute deals between STL and Southampton Airport (SOU) are of course possible, it's also a good idea to keep track of prices well before you fly. In fact, some air carriers announce their prices up to a year ahead of the departure date. 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