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

Return flights

10 May - 12 May	Delta
10 May - 22 May	Delta
04 May - 11 May	Virgin Atlantic
05 May - 12 May	Delta
06 May - 14 May	Delta
13 May - 20 May	Air France
05 May - 13 May	Delta
11 May - 20 May	United	direct
10 May - 22 May	United	direct
05 May - 12 May	British Airways	direct
05 May - 04 Jun	Air France
10 May - 10 Jun	Delta
10 May - 10 Jun	United	direct
05 May - 04 Jun	British Airways	direct
20 May - 06 Jun	United	direct
09 May - 13 Jun	Air Canada
27 May - 10 Jun	Air Canada
31 May - 11 Jun	Lufthansa
27 May - 10 Jun	Lufthansa	direct
26 May - 04 Jun	Air France

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.

Book a cheap hotel in London

Cheap car rent in London

Cheapest return flights from Houston to London in May from 511€

Return flights