AirHint found the following cheapest return flights from Miami (MIA) to London (LHR) in August 2026 (see full year).

Return flights

19 Aug - 26 Aug	Air Canada
18 Aug - 25 Aug	Air Canada
26 Aug - 14 Sep	Air Canada
19 Aug - 04 Sep	United
19 Aug - 26 Aug	British Airways	direct
27 Aug - 31 Aug	Spirit Airlines
18 Aug - 06 Sep	British Airways	direct
26 Aug - 14 Sep	British Airways	direct
07 Aug - 10 Aug	TAP
01 Aug - 07 Aug	TAP
04 Aug - 09 Aug	TAP
07 Aug - 10 Aug	Iberia	direct
04 Aug - 09 Aug	Iberia	direct

Also check the deals for one-way flights from Miami to London in August.

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 Miami to London in August from 544€

Return flights