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

Return flights

09 Sep - 20 Sep	Spirit Airlines
03 Sep - 18 Sep	Spirit Airlines
11 Sep - 20 Sep	Spirit Airlines
23 Sep - 30 Sep	Air Canada
09 Sep - 16 Sep	United
24 Sep - 01 Oct	United
30 Sep - 07 Oct	United
13 Sep - 26 Sep	Air Canada
05 Sep - 13 Sep	Spirit Airlines
04 Sep - 15 Sep	Spirit Airlines
05 Sep - 14 Sep	Spirit Airlines
01 Sep - 06 Sep	Spirit Airlines
27 Sep - 07 Oct	United
19 Sep - 10 Oct	Delta
15 Sep - 05 Oct	KLM
25 Sep - 06 Oct	Delta
27 Sep - 04 Oct	United

Also check the deals for one-way flights from Houston to Rome 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 Rome in September from 412€

Return flights