Cheapest return flights from Washington to Kathmandu in September from $1264

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

Return flights

14 Sep - 05 Oct Air India
07 Sep - 28 Sep Air India
05 Sep - 07 Sep Air India
13 Sep - 20 Sep Air India
10 Sep - 26 Sep Air India
19 Sep - 05 Oct Air India
05 Sep - 20 Sep jetBlue
27 Sep - 18 Oct Air India
05 Sep - 09 Oct Emirates
21 Sep - 14 Oct jetBlue
19 Sep - 28 Oct Qatar Airways
14 Sep - 29 Oct Qatar Airways

Also check the deals for one-way flights from Washington 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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