Cheapest one-way ORD–LHR flights, September

AirHint found the following cheapest one-way flights from Chicago (ORD) to London (LHR) in September 2026 (see full year).

One-Way flights

08 Sep Spirit Airlines
16 Sep jetBlue
05 Sep Spirit Airlines
24 Sep Porter Airlines (Canada) Ltd
14 Sep Spirit Airlines
13 Sep Porter Airlines (Canada) Ltd
20 Sep Icelandair
16 Sep Lufthansa direct
13 Sep Lufthansa direct
14 Sep Lufthansa direct

Also check the deals for return flights from Chicago to London in September.

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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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