Cheapest return flights from Houston to Kathmandu in September from $1024

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

Return flights

04 Sep - 12 Sep IndiGo
21 Sep - 28 Sep Qatar Airways
12 Sep - 27 Sep Turkish Airlines
27 Sep - 13 Oct Spirit Airlines
27 Sep - 12 Oct Spirit Airlines
24 Sep - 09 Oct Turkish Airlines
26 Sep - 13 Oct Spirit 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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