| Route | Duration | Benchmark price | Good to know |
|---|---|---|---|
| Hanoi - Bangkok (direct) | 1 h 45 to 2 h 25 | from about 115 EUR on one comparison site | BKK or DMK depending on airline |
| Hanoi - Siem Reap (direct) | about 1 h 40 to 2 h | 60 to 220 USD (very variable) | check the direct link exists for your date |
| Hanoi - Siem Reap (via Saigon) | about 4 h 12 | 100 to 190 USD | fallback if no direct |
| Hanoi - Siem Reap overland | over 47 h | from about 50 USD | not recommended |
Hanoi - Bangkok
The route is well served; a low-cost airline and the national carrier share the traffic. Look at the arrival airport: Don Mueang and Suvarnabhumi do not have the same links to the centre. Before leaving, check the entry rules for your nationality and keep an eSIM or a SIM card for the next leg.
Hanoi - Siem Reap
One operator ran a direct link; the last date seen for the reverse route is 19 March 2025, so confirm it still exists for your date. Failing that, the stop in Saigon remains a good plan. For Angkor, plan two or three days.
Before leaving
The transfer to Noi Bai is detailed in from the airport to central Hanoi (same route in reverse). For Vietnam's entry rules, see the e-visa.
