Most reliable airlines, 2024. 1. 🇲🇽 Aeromexico 2. 🇸🇦 Saudia 3. 🇺🇸 Delta Airlines 4. 🇨🇱 LATAM Airlines 5. 🇶🇦 Qatar Airways 6. 🇧🇷 Azul 7. 🇨🇴 Avianca 8. 🇪🇸 Iberia 9. 🇸🇪 SAS 10. 🇺🇸 Unit