Does proof of onward travel from Thailand have to be a flight ticket?

Immigration in Thailand is inconsistent — sometimes they barely glance at documents, other times they check everything carefully. A bus or train ticket technically qualifies as proof of onward travel, but flight tickets are what officers are most familiar with and can verify fastest. Bus tickets have worked, but sometimes prompted extra questions. For peace of mind after a long flight, a cheap or refundable flight out is the safest option.

Fake onward tickets are increasingly being spotted at the border. That said, a flight isn't required — a train ticket to Laos, for example, is accepted and is a very cheap option.

One traveler used an onward travel booking service and paid $16 for a flight reservation to Vietnam when extending a 60-day visa by 30 days — and wasn't asked about it at all. A friend had the same experience. The challenge is not knowing when or where you'll leave. Options include buying a cheap refundable ticket or using a temporary reservation service.

A practical tip: bringing cash instead of bank statements can work well. You can explain you're leaving by bus or train, but in practice many travelers report never being asked for proof of onward travel at all.

The airline itself may also require proof of onward travel before boarding. It's worth checking with your carrier in advance and asking them to add a note to your booking record regarding your exit ticket from Thailand.