Cheap British Airways flights Phoenix (PHX) to Southampton (SOU)

Use the "Price (lowest to highest)" filter on Expedia to search for cheap British Airways return flights from $645 from PHX to SOU. Affordable one-way fares are available too.**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.

Landing the best British Airways deals from PHX to SOU is typically all about timing. You can save 17% on international flights when you book 18 to 29 days before takeoff instead of four to five months ahead. As an added bonus, you can pocket 17% on average by buying your tickets on a Sunday compared to a Friday, which is often the most expensive day to book.* It's a good idea to start checking out flights about one month before your departure date.*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.

Sort your results by "Morning" and "Early Morning" to see the earliest departures from PHX to SOU. Leaving early 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.

British Airways makes traveling from PHX to SOU more comfortable with an excellent in-flight experience and top-tier customer service. You also have the chance to earn points with British Airways Executive Club. Make sure you sign up to our free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.