Cheapest return flights from Chicago to London in March from 399€

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

Return flights

10 Mar - 24 Mar Icelandair
01 Mar - 08 Mar Icelandair
17 Mar - 31 Mar Icelandair
02 Mar - 06 Mar Scandinavian Airlines
12 Mar - 20 Mar Scandinavian Airlines
02 Mar - 09 Mar Icelandair
15 Mar - 21 Mar Scandinavian Airlines
03 Mar - 10 Mar Icelandair
03 Mar - 10 Mar British Airways direct
06 Mar - 15 Mar Scandinavian Airlines
10 Mar - 04 Apr Icelandair
10 Mar - 04 Apr British Airways direct
26 Mar - 02 Apr Finnair
27 Mar - 05 Apr Icelandair
28 Mar - 18 Apr Icelandair
26 Mar - 02 Apr British Airways direct
27 Mar - 06 Apr Aer Lingus
28 Mar - 04 Apr British Airways direct
28 Mar - 18 Apr British Airways direct

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

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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