Cheapest return flights from Houston to London in May from $645

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

Return flights

05 May - 13 May Delta
06 May - 12 May Air France
12 May - 19 May KLM
06 May - 14 May Air France
06 May - 18 May Air Canada
04 May - 18 May Air Canada
12 May - 22 May British Airways direct
12 May - 19 May British Airways direct
06 May - 14 May British Airways direct
05 May - 13 May American Airlines direct
10 May - 10 Jun Delta
10 May - 10 Jun United direct
16 May - 03 Jun KLM
20 May - 06 Jun Iberia
20 May - 07 Jun Air Canada
09 May - 13 Jun Air Canada
15 May - 06 Jun KLM
20 May - 06 Jun United direct
20 May - 07 Jun United direct
26 May - 04 Jun Air France

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

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