AirHint found the following cheapest return flights from Miami (MIA) to London (LHR) in October 2025 (see full year).

Return flights

23 Oct - 26 Oct	Air Canada
06 Oct - 27 Oct	Air Canada
28 Oct - 27 Nov	Air Canada
04 Oct - 30 Oct	Air Canada
01 Oct - 29 Oct	Air Canada
08 Oct - 29 Oct	Air Canada
14 Oct - 21 Oct	Air Canada
14 Oct - 27 Oct	Air Canada
20 Oct - 03 Nov	Air Canada
21 Oct - 15 Nov	TAP
04 Oct - 31 Oct	Air Canada
27 Oct - 22 Nov	TAP
21 Oct - 31 Oct	Delta
22 Oct - 04 Nov	Delta
26 Oct - 11 Nov	Delta
08 Oct - 14 Oct	British Airways	direct
20 Oct - 15 Nov	TAP
22 Oct - 04 Nov	British Airways	direct
26 Oct - 06 Nov	Delta	direct
28 Oct - 04 Nov	British Airways	direct

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

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 October from $474

Return flights