Cheapest return flights from Chicago to London in March from $440

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

Return flights

21 Mar - 23 Mar Scandinavian Airlines
07 Mar - 10 Mar Scandinavian Airlines
03 Mar - 08 Mar Scandinavian Airlines
11 Mar - 15 Mar Scandinavian Airlines
03 Mar - 14 Mar Scandinavian Airlines
09 Mar - 15 Mar Scandinavian Airlines
01 Mar - 25 Mar Icelandair
06 Mar - 15 Mar Scandinavian Airlines
15 Mar - 25 Mar Scandinavian Airlines
21 Mar - 28 Mar Scandinavian Airlines
22 Mar - 11 Apr Scandinavian Airlines
23 Mar - 18 Apr Scandinavian Airlines
19 Mar - 11 Apr Scandinavian Airlines
17 Mar - 11 Apr Icelandair
30 Mar - 15 Apr Scandinavian Airlines
31 Mar - 11 Apr Icelandair
30 Mar - 25 Apr Icelandair
31 Mar - 25 Apr Icelandair
25 Mar - 02 Apr British Airways direct
26 Mar - 02 Apr Icelandair

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

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