AirHint found the following cheapest return flights from Minneapolis (MSP) to London (LHR) in September 2025 (see full year).

Return flights

25 Sep - 02 Oct	Icelandair
03 Sep - 10 Sep	Icelandair
12 Sep - 20 Sep	Icelandair
19 Sep - 26 Sep	Icelandair
08 Sep - 15 Sep	Icelandair
19 Sep - 27 Sep	Icelandair
13 Sep - 27 Sep	Icelandair
04 Sep - 11 Sep	Icelandair
18 Sep - 23 Sep	Icelandair
02 Sep - 09 Sep	Icelandair
11 Sep - 18 Sep	Icelandair
24 Sep - 06 Oct	Sun Country Airlines
27 Sep - 11 Oct	Icelandair
25 Sep - 06 Oct	Sun Country Airlines
26 Sep - 11 Oct	Sun Country Airlines
26 Sep - 03 Oct	Icelandair
26 Sep - 06 Oct	Lufthansa
19 Sep - 02 Oct	Delta
29 Sep - 06 Oct	British Airways
27 Sep - 11 Oct	Virgin Atlantic	direct

Also check the deals for one-way flights from Minneapolis to London in September.

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 Minneapolis to London in September from $503

Return flights