Cheapest return flights from Chicago to London in March from $416

AirHint found the following cheapest return flights from Chicago (ORD) to London (LHR) in March 2026 (see full year).

Return flights

04 Mar - 07 Mar Scandinavian Airlines
04 Mar - 11 Mar TAP
04 Mar - 10 Mar TAP
17 Mar - 23 Mar Icelandair
03 Mar - 08 Mar Icelandair
31 Mar - 12 Apr Icelandair
11 Mar - 18 Mar Icelandair
11 Mar - 17 Mar Icelandair
04 Mar - 15 Mar Icelandair
24 Mar - 30 Mar Icelandair
01 Mar - 31 Mar Icelandair
30 Mar - 07 Apr British Airways
31 Mar - 14 Apr British Airways
25 Mar - 15 Apr Finnair
27 Mar - 11 Apr Icelandair
29 Mar - 07 Apr American Airlines
23 Mar - 07 Apr British Airways
27 Mar - 27 Apr Scandinavian Airlines
29 Mar - 06 Apr British Airways
29 Mar - 20 Apr Air Canada

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

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