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

Return flights

13 Apr - 20 Apr	Air Canada
14 Apr - 27 Apr	Air Canada
17 Apr - 28 Apr	Air Canada
23 Apr - 30 Apr	Air Canada
08 Apr - 14 Apr	Air Canada
26 Apr - 10 May	Lufthansa
01 Apr - 20 Apr	Air France
01 Apr - 08 Apr	Lufthansa
26 Apr - 03 May	Lufthansa
20 Apr - 26 Apr	Spirit Airlines
07 Apr - 17 Apr	Frontier Airlines
21 Apr - 17 May	Lufthansa
10 Apr - 18 Apr	Air Canada

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

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 April from $515

Return flights