Cheapest return flights from Chicago to London in March from $563

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

Return flights

15 Mar - 31 Mar TAP
10 Mar - 24 Mar Spirit Airlines
04 Mar - 11 Mar TAP
31 Mar - 28 Apr Aer Lingus
09 Mar - 24 Mar Spirit Airlines
10 Mar - 15 Mar jetBlue
23 Mar - 13 Apr Scandinavian Airlines
10 Mar - 16 Mar Icelandair
09 Mar - 15 Mar jetBlue
11 Mar - 24 Mar Virgin Atlantic
04 Mar - 09 Mar KLM
17 Mar - 12 Apr Spirit Airlines
09 Mar - 17 Mar Aer Lingus
30 Mar - 10 Apr KLM
18 Mar - 12 Apr Spirit Airlines
25 Mar - 15 Apr Virgin Atlantic
18 Mar - 01 Apr Finnair
25 Mar - 02 Apr Finnair
25 Mar - 01 Apr Finnair
31 Mar - 06 Apr Spirit Airlines

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

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