The cheapest flight price from Thailand to Savannakhet is ฿ 5,350. On average you can expect to pay ฿ 5,350. The most popular route, (Bangkok Suvarnabhumi - Savannakhét), can usually be booked for ฿ 8,700.
Lao Airlines is one of the carriers that may have flexible change policies. You can use our site to filter for other airlines that may also have this kind of flexibility.