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

Return flights

06 May - 13 May	Air Canada
05 May - 12 May	Air Canada
06 May - 20 May	Air Canada
12 May - 18 May	Air Canada
19 May - 29 May	Air Canada
20 May - 29 May	Air Canada
26 May - 08 Jun	Spirit Airlines
21 May - 31 May	Spirit Airlines
28 May - 08 Jun	Spirit Airlines
22 May - 31 May	Spirit Airlines
30 May - 13 Jun	Spirit Airlines
01 May - 10 May	Turkish Airlines
05 May - 23 Jun	Aer Lingus
27 May - 04 Jun	Spirit Airlines
15 May - 25 May	Spirit Airlines
25 May - 06 Jun	WestJet

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

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 May from 462€

Return flights