Cheapest return flights from Bangkok to Kathmandu in December from $206

AirHint found the following cheapest return flights from Bangkok (BKK) to Kathmandu (KTM) in December 2025 (see full year).

Return flights

22 Dec - 28 Dec Thai Lion Air direct
29 Dec - 05 Jan Thai Lion Air direct
14 Dec - 22 Dec Thai Lion Air direct
22 Dec - 04 Jan Thai Lion Air direct
31 Dec - 18 Jan Thai AirAsia direct
15 Dec - 14 Jan Thai Lion Air direct
15 Dec - 19 Dec Thai Lion Air direct
17 Dec - 19 Dec Thai AirAsia direct
19 Dec - 04 Jan Thai AirAsia direct
21 Dec - 29 Dec Thai AirAsia direct
24 Dec - 07 Jan Thai AirAsia direct
26 Dec - 04 Jan Thai AirAsia direct
19 Dec - 02 Jan Thai AirAsia direct
29 Dec - 31 Dec Thai AirAsia direct
24 Dec - 04 Jan Thai AirAsia direct
14 Dec - 21 Dec Thai Lion Air direct
10 Dec - 02 Jan Thai AirAsia direct
10 Dec - 19 Dec Thai AirAsia direct
28 Dec - 29 Dec Thai AirAsia direct
25 Dec - 29 Dec Thai AirAsia X

Also check the deals for one-way flights from Bangkok to Kathmandu in December.

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