Cheapest return flights from Houston to Kathmandu in September from 936€

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

Return flights

03 Sep - 05 Sep Turkish Airlines
07 Sep - 03 Oct Spirit Airlines
05 Sep - 12 Sep Frontier Airlines
01 Sep - 17 Oct Spirit Airlines
15 Sep - 30 Sep Turkish Airlines
23 Sep - 21 Oct Spirit Airlines
19 Sep - 03 Oct Spirit Airlines
18 Sep - 03 Oct Spirit Airlines
23 Sep - 28 Oct Spirit Airlines
23 Sep - 13 Oct Turkish Airlines
24 Sep - 14 Oct Spirit Airlines
23 Sep - 14 Oct Turkish Airlines
19 Sep - 05 Oct Turkish Airlines

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

Skyscanner

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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