Cheapest return flights from Seattle to Kathmandu in May from $866

AirHint found the following cheapest return flights from Seattle (SEA) to Kathmandu (KTM) in May 2026 (see full year).

Return flights

05 May - 05 Jun Singapore Airlines
19 May - 19 Jun Singapore Airlines
16 May - 20 Jun Singapore Airlines
17 May - 19 Jun Singapore Airlines
17 May - 20 Jun Singapore Airlines
20 May - 20 Jun Alaska Airlines
18 May - 19 Jun Alaska Airlines
23 May - 19 Jun Singapore Airlines
04 May - 04 Jun Alaska Airlines
24 May - 19 Jun Alaska Airlines

Also check the deals for one-way flights from Seattle to Kathmandu in May.

Powered by

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.

Book a cheap hotel in Kathmandu

Cheap car rent in Kathmandu

Feel free to contact us with any feedback or request another flight research.