Do they really weigh carry-on bags?

Yes, especially in hubs like Kuala Lumpur, Singapore, and Bangkok. Do not gamble on your bag being 'close enough' to the 7kg limit.

Is it worth buying 'Flex' or 'Premium' fares?

Only if you have a high chance of needing to change your flight. Otherwise, the basic fare plus a pre-paid checked bag is almost always cheaper.

What happens if I miss my flight?

Budget airlines rarely offer rebooking for free. You will likely forfeit the entire ticket cost, so ensure your travel insurance covers missed departures.

Flying budget airlines in Asia like a pro

To fly budget airlines in Asia effectively, book at least 3 weeks in advance, strictly adhere to carry-on weight limits, and always purchase baggage during the initial booking process. Avoid airport counter fees by checking in online and printing your boarding pass before arriving at the terminal.

Book through the official airline site. Avoid third-party aggregators for budget carriers like AirAsia, Scoot, or VietJet. Booking directly allows you to manage your reservation, add baggage, and select seats without paying extra service fees or dealing with complex refund policies.
Pre-purchase your baggage allowance. If you need a checked bag, buy it at the moment of booking. Adding baggage at the airport counter can cost 200% to 300% more than purchasing it online. Check the airline’s specific weight limit (usually 15kg-20kg) to avoid surprise overweight fees.
Master the carry-on limit. Most Asian budget carriers have a strict 7kg carry-on limit. They frequently weigh bags at the gate. If your bag is over, you will be forced to check it for a hefty fee.
Check in online 24 hours prior. Use the airline's mobile app or website to check in and save your boarding pass to your phone. Many airlines charge a fee for printing your boarding pass at the airport kiosk.
Bring your own water and snacks. Budget airlines in Asia are notoriously stingy with complimentary items. Buy a bottle of water after security and pack a meal if your flight is over 3 hours long to avoid inflated inflight menu prices.

Do they really weigh carry-on bags?: Yes, especially in hubs like Kuala Lumpur, Singapore, and Bangkok. Do not gamble on your bag being 'close enough' to the 7kg limit.
Is it worth buying 'Flex' or 'Premium' fares?: Only if you have a high chance of needing to change your flight. Otherwise, the basic fare plus a pre-paid checked bag is almost always cheaper.
What happens if I miss my flight?: Budget airlines rarely offer rebooking for free. You will likely forfeit the entire ticket cost, so ensure your travel insurance covers missed departures.