Cheap British Airways flights St. Louis (STL) to Southampton (SOU)

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Flights from St. Louis (STL) to Southampton (SOU)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Southampton
Airlines serving
Aer Lingus, Delta, KLM, Virgin Atlantic
Popular airline
Aer Lingus
Distance
4170 mi

Frequently asked questions

How much is a British Airways flight from Lambert-St. Louis Intl. Airport (STL) to Southampton Airport (SOU)?
Set the "Price (lowest to highest)" filter on Expedia to find cheap British Airways round-trip flights from STL to SOU. Affordable one-way options are also available.**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 SOU with British Airways?
Search for one-way or return flights to Southampton in January or February. You could find a cheap fare with British Airways during these off-peak travel months.
What is the cheapest time to book flights from Lambert-St. Louis Intl. Airport (STL) to Southampton Airport (SOU) with British Airways?
To get affordable flights from STL to SOU with British Airways, begin your search about one month before your intended departure. You can save 17% when you lock in your international tickets 18 to 29 days ahead instead of booking four to five months in advance. Another useful tip? Booking on Sunday can lead to average savings of 17% compared to Friday (the most expensive day).**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does British Airways fly nonstop from Lambert-St. Louis Intl. Airport (STL) to Southampton Airport (SOU)?
Use our "Nonstop" filter when searching for direct British Airways flights from STL to SOU. It's also an easy way to compare other carriers offering the same direct trip.
What is the earliest British Airways flight from STL to SOU?
To find the earliest departure from STL to SOU with British Airways, sort your results by "Morning" and "Early Morning." Booking an early flight generally means you're less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does British Airways fly into in Southampton?
Take a British Airways flight from Lambert-St. Louis Intl. Airport (STL) to Southampton, and you'll probably land at Southampton Airport (SOU). This is the airline's primary hub here.
What kind of luggage can I take on a British Airways flight from Lambert-St. Louis Intl. Airport (STL) to Southampton Airport (SOU)?
On a standard economy flight with British Airways from STL to SOU, you can bring 1 checked-in bag up to 50 lb with dimensions no larger than 29 inches x 15 inches x 16 inches in total. For hand luggage, you can have 2 cabin bags weighing up to 50 lb and measuring no more than 19 inches x 9 inches x 17 inches. Weight and size allowances can vary depending on the cabin class you're in and airfare type. To make sure you won't face extra charges at the airport, check your British Airways booking or look up the airline's website before loading up your suitcase.
Why fly with British Airways from STL to SOU?
With an excellent in-flight experience and a 4-star airline rating, British Airways is a favorite for many passengers flying from STL to SOU. Also, if you're a British Airways Executive Club and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be used on future getaways.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my British Airways flight from Lambert-St. Louis Intl. Airport (STL) to Southampton Airport (SOU)?
Depending on the type of ticket you purchased, a fee may apply if you cancel or reschedule your booking more than 24 hours after confirmation. To find flexible plane tickets, select our "Changes included" or "No cancel fee" filter when you search for flights. For additional information on canceling or changing your reservation, head to "Trips," select your flight and tick "Manage Booking."

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*Available to One Key members.