Cheapest return flights from Chicago to London in April from $451

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

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

Return flights

07 Apr - 21 Apr Frontier Airlines
08 Apr - 23 Apr Spirit Airlines
28 Apr - 08 May Spirit Airlines
29 Apr - 06 May Spirit Airlines
08 Apr - 30 Apr Frontier Airlines
08 Apr - 28 Apr Frontier Airlines
08 Apr - 07 May Frontier Airlines
08 Apr - 29 Apr Frontier Airlines
08 Apr - 09 May Frontier Airlines
13 Apr - 23 Apr Spirit Airlines
08 Apr - 08 May Spirit Airlines
30 Apr - 16 May Spirit Airlines
30 Apr - 20 May Spirit Airlines
30 Apr - 14 May Spirit Airlines
29 Apr - 04 May Spirit Airlines
05 Apr - 02 May Spirit Airlines
08 Apr - 26 Apr Spirit Airlines
09 Apr - 27 Apr Spirit Airlines
08 Apr - 27 Apr Spirit Airlines
11 Apr - 23 Apr Spirit Airlines

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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