AirHint found the following cheapest return flights from Houston (IAH) to Delhi (DEL) in September 2025 (see full year).

Return flights

02 Sep - 09 Sep	Air France
03 Sep - 10 Sep	KLM
08 Sep - 15 Sep	Air France
10 Sep - 17 Sep	KLM
13 Sep - 20 Sep	Air France
14 Sep - 21 Sep	Air France
18 Sep - 25 Sep	Air France
15 Sep - 22 Sep	KLM
17 Sep - 24 Sep	Air France
19 Sep - 26 Sep	Air France
25 Sep - 02 Oct	Air France
01 Sep - 11 Oct	Air France
24 Sep - 01 Oct	Air France
26 Sep - 03 Oct	Air France
30 Sep - 07 Oct	Turkish Airlines
27 Sep - 04 Oct	Spirit Airlines
29 Sep - 06 Oct	Spirit Airlines
28 Sep - 05 Oct	Spirit Airlines

Also check the deals for one-way flights from Houston to Delhi 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 Houston to Delhi in September from 603€

Return flights