Cheapest return flights from London to Kathmandu in September from $792

Best time to book flights for London (LHR) to Kathmandu (KTM) flights at AirHint

AirHint found the following cheapest return flights from London (LHR) to Kathmandu (KTM) in September 2025 (see full year).

Return flights

09 Sep - 21 Sep SriLankan Airlines
23 Sep - 19 Oct SriLankan Airlines
01 Sep - 28 Sep SriLankan Airlines
03 Sep - 24 Sep IndiGo
22 Sep - 29 Sep SriLankan Airlines
07 Sep - 21 Sep IndiGo
17 Sep - 24 Sep IndiGo
09 Sep - 23 Sep IndiGo
08 Sep - 22 Sep IndiGo
10 Sep - 21 Sep IndiGo
17 Sep - 28 Sep IndiGo
29 Sep - 26 Oct SriLankan Airlines
30 Sep - 26 Oct SriLankan Airlines
22 Sep - 12 Oct SriLankan Airlines
16 Sep - 16 Oct SriLankan Airlines
16 Sep - 27 Oct SriLankan Airlines
08 Sep - 08 Oct SriLankan Airlines
27 Sep - 26 Oct SriLankan Airlines
26 Sep - 23 Oct SriLankan Airlines
09 Sep - 10 Oct Air India

Also check the deals for one-way flights from London to Kathmandu in September.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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