AirHint found the following cheapest return flights from Mumbai (BOM) to Seattle (SEA) in September 2025 (see full year).

Return flights

18 Sep - 25 Sep	Air France
12 Sep - 22 Sep	Air France
23 Sep - 27 Sep	Air France
15 Sep - 25 Oct	Air France
09 Sep - 15 Sep	Air France
09 Sep - 05 Oct	Air France
18 Sep - 19 Oct	Air France
19 Sep - 19 Oct	Air France
21 Sep - 19 Oct	Air France
22 Sep - 19 Oct	Air France
23 Sep - 19 Oct	Air France
24 Sep - 19 Oct	Air France
25 Sep - 19 Oct	Air France
26 Sep - 19 Oct	Air France
17 Sep - 30 Sep	Air France
12 Sep - 26 Sep	Delta
05 Sep - 27 Sep	Delta
17 Sep - 29 Sep	SWISS
02 Sep - 09 Sep	Lufthansa
02 Sep - 08 Sep	Lufthansa

Also check the deals for one-way flights from Mumbai to Seattle in September.

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 Seattle

Cheap car rent in Seattle

Cheapest return flights from Mumbai to Seattle in September from 750€

Return flights