Cheapest return flights from Chicago to London in March from 630€

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

Return flights

29 Mar - 14 Apr Turkish Airlines
30 Mar - 09 Apr Aer Lingus
25 Mar - 30 Mar SWISS
30 Mar - 06 Apr Lufthansa
25 Mar - 02 Apr Delta
29 Mar - 06 Apr SWISS
29 Mar - 14 Apr British Airways direct
30 Mar - 09 Apr British Airways direct
31 Mar - 05 Apr Air Canada
29 Mar - 11 Apr Lufthansa
30 Mar - 05 Apr Air Canada
26 Mar - 31 Mar British Airways
28 Mar - 31 Mar Aer Lingus
25 Mar - 29 Mar Austrian Airlines
25 Mar - 30 Mar Finnair direct
27 Mar - 29 Mar Delta
26 Mar - 31 Mar Finnair direct
27 Mar - 29 Mar Iberia direct
25 Mar - 29 Mar Iberia direct
28 Mar - 30 Mar LOT

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

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