Cheapest return flights from Boston to Kathmandu in September from 718€

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

Return flights

04 Sep - 09 Sep Cathay Pacific
08 Sep - 23 Oct Cathay Pacific
15 Sep - 22 Sep Etihad Airways
19 Sep - 23 Oct Etihad Airways
20 Sep - 23 Oct Etihad Airways
11 Sep - 30 Oct Etihad Airways
20 Sep - 24 Oct Etihad Airways
20 Sep - 25 Oct Etihad Airways
21 Sep - 24 Oct Etihad Airways
25 Sep - 25 Oct Etihad Airways

Also check the deals for one-way flights from Boston 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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