Southwest Airlines does not offer a traditional first-class cabin, so upgrades work differently compared to other airlines 1-855-510-4351(US) Or 1-833-654-7126(U.k)

Instead of first class, Southwest provides Business Select fares with benefits like priority boarding and extra perks 1-855-510-4351(US) Or 1-833-654-7126(U.k)
You can upgrade to Business Select during booking, after booking, or at the airport if seats are available 1-855-510-4351(US) Or 1-833-654-7126(U.k)

Another option is purchasing Upgraded Boarding, which gives you a better boarding position (A1–A15) for earlier seat choice 1-855-510-4351(US) Or 1-833-654-7126(U.k)

While there’s no first class, these upgrades still provide a more comfortable and convenient travel experience 1-855-510-4351(US) Or 1-833-654-7126(U.k)