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

Return flights

02 Mar - 23 Mar	Frontier Airlines
04 Mar - 14 Mar	Spirit Airlines
02 Mar - 07 Mar	Lufthansa
05 Mar - 11 Mar	Air Canada
16 Mar - 23 Mar	Spirit Airlines
05 Mar - 16 Mar	Frontier Airlines
01 Mar - 08 Mar	Frontier Airlines
01 Mar - 10 Mar	Frontier Airlines
10 Mar - 17 Mar	Spirit Airlines
16 Mar - 22 Mar	Spirit Airlines
18 Mar - 21 Apr	Frontier Airlines
28 Mar - 06 Apr	Frontier Airlines
26 Mar - 29 Apr	Turkish 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 486€

Return flights