Cheapest return flights from Chicago to London in April from $633

Best time to book flights for Chicago (ORD) to London (LHR) flights at AirHint

AirHint found the following cheapest return flights from Chicago (ORD) to London (LHR) in April 2025 (see full year).

Return flights

27 Apr - 09 May Icelandair
30 Apr - 15 May Icelandair
23 Apr - 30 Apr Aer Lingus
30 Apr - 08 May Air Canada
30 Apr - 09 May Air Canada
23 Apr - 20 May Aer Lingus
29 Apr - 06 May Aer Lingus
23 Apr - 06 May Aer Lingus
23 Apr - 10 May jetBlue
21 Apr - 21 May Finnair
22 Apr - 29 Apr Air Canada
22 Apr - 30 Apr Air Canada
26 Apr - 01 May jetBlue
23 Apr - 28 Apr jetBlue
25 Apr - 29 Apr Icelandair
25 Apr - 28 Apr Icelandair
23 Apr - 30 Apr Finnair direct
22 Apr - 30 Apr Finnair direct
22 Apr - 29 Apr Finnair direct
25 Apr - 30 Apr Icelandair

Also check the deals for one-way flights from Chicago to London in April.

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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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