What's a good Android app for booking flights and managing all the details in one place?

Look, I'm a busy guy, and I need things streamlined. Volaris 2.0 does a decent job of that. It lets me book flights, check in, and manage my trips all in one spot. That saves me about 30 minutes each time I fly, which adds up. The interface is clean, and I haven't had any crashes, which is a huge plus. What I really like is the option to pay the Airport Use Fee (TUA) when it's convenient for me. That kind of flexibility is worth something. Bottom line, it's not the fanciest app out there, but it gets the job done and keeps my travel plans organized. And that's what matters to me.