Q: What are the travel class differences and upgrade options for international flights from Delhi to Mumbai with onward connections?
- Economy Class: Basic seating with limited legroom, complimentary meals, and standard in-flight entertainment.
- Premium Economy: Enhanced legroom, priority boarding, and upgraded meal options.
- Business Class: Lie-flat seats, gourmet meals, lounge access, and priority services.
- First Class: Ultimate luxury with private suites, personalized service, and exclusive amenities.
- Using frequent flyer miles to upgrade at the time of booking or check-in.
- Paying for upgrades during online check-in or at the airport.
- Taking advantage of airline promotions for discounted upgrades.

