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

Return flights

07 Mar - 17 Mar	Air France
04 Mar - 12 Mar	Air France
01 Mar - 10 Mar	Air France
04 Mar - 11 Mar	Air France
10 Mar - 17 Mar	Air France
04 Mar - 10 Mar	Air France
04 Mar - 18 Mar	Air France
10 Mar - 17 Mar	British Airways	direct
05 Mar - 10 Mar	WestJet
18 Mar - 21 Apr	Air France
01 Mar - 08 Mar	Brussels Airlines
18 Mar - 21 Apr	British Airways	direct
28 Mar - 06 Apr	Air France
26 Mar - 29 Apr	Air Canada
26 Mar - 07 Apr	Delta
26 Mar - 29 Apr	American Airlines	direct

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 504€

Return flights