AirHint found the following cheapest return flights from Houston (IAH) to London (LGW) in March 2026 (see full year).

Return flights

03 Mar - 28 Mar	Turkish Airlines
02 Mar - 09 Mar	Turkish Airlines
30 Mar - 09 Apr	Frontier Airlines
26 Mar - 18 Apr	Turkish Airlines
22 Mar - 10 Apr	Turkish Airlines
10 Mar - 19 Mar	Turkish Airlines
25 Mar - 18 Apr	Turkish Airlines
24 Mar - 18 Apr	Turkish Airlines
07 Mar - 14 Mar	Turkish Airlines
06 Mar - 14 Mar	Turkish Airlines
06 Mar - 28 Mar	Turkish Airlines
06 Mar - 13 Mar	Turkish Airlines
06 Mar - 15 Mar	Frontier Airlines

Also check the deals for one-way flights from Houston to London in March.

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 London in March from 645€

Return flights