Cheapest return flights from Chicago to London in March from $510

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

Return flights

01 Mar - 15 Mar Icelandair
24 Mar - 31 Mar Icelandair
05 Mar - 12 Mar Icelandair
04 Mar - 09 Mar Icelandair
22 Mar - 11 Apr Icelandair
24 Mar - 18 Apr Icelandair
02 Mar - 28 Mar Icelandair
15 Mar - 22 Mar Icelandair
08 Mar - 12 Mar Icelandair
08 Mar - 13 Mar Icelandair
08 Mar - 14 Mar Icelandair
08 Mar - 15 Mar Icelandair
25 Mar - 18 Apr Aer Lingus
20 Mar - 11 Apr Scandinavian Airlines
11 Mar - 04 Apr TAP
28 Mar - 18 Apr Icelandair
27 Mar - 03 Apr Icelandair
28 Mar - 04 Apr Air Canada
27 Mar - 06 Apr Icelandair
27 Mar - 07 Apr Icelandair

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

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