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

Return flights

20 Sep - 27 Sep	Saudia
21 Sep - 28 Sep	Saudia
28 Sep - 13 Oct	Saudia
16 Sep - 23 Sep	Saudia
18 Sep - 25 Sep	Saudia
02 Sep - 12 Sep	Saudia
10 Sep - 17 Sep	Saudia
09 Sep - 16 Sep	Saudia
13 Sep - 28 Sep	Saudia
04 Sep - 11 Sep	Saudia
06 Sep - 13 Sep	Saudia
27 Sep - 04 Oct	Saudia
28 Sep - 05 Oct	Saudia
30 Sep - 07 Oct	Saudia
25 Sep - 06 Oct	Saudia
14 Sep - 14 Oct	Saudia
24 Sep - 01 Oct	Saudia
25 Sep - 02 Oct	Saudia
29 Sep - 06 Oct	Saudia
30 Sep - 21 Oct	Turkish Airlines

Also check the deals for one-way flights from Washington to Mumbai 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.

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Cheapest return flights from Washington to Mumbai in September from $575

Return flights