Cheapest return flights from Chicago to London in March from 365€

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

Return flights

04 Mar - 11 Mar TAP
04 Mar - 10 Mar TAP
10 Mar - 23 Mar Icelandair
10 Mar - 24 Mar Aer Lingus
03 Mar - 13 Mar Aer Lingus
23 Mar - 11 Apr Icelandair
05 Mar - 09 Mar Icelandair
06 Mar - 15 Mar Icelandair
10 Mar - 24 Mar British Airways direct
04 Mar - 10 Mar British Airways direct
15 Mar - 29 Mar Icelandair
18 Mar - 06 Apr Finnair
23 Mar - 11 Apr British Airways direct
26 Mar - 05 Apr Air Canada
27 Mar - 06 Apr Aer Lingus
12 Mar - 04 Apr Finnair
28 Mar - 04 Apr Finnair
12 Mar - 04 Apr British Airways direct
28 Mar - 04 Apr British Airways direct
27 Mar - 04 Apr Aer Lingus

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

Skyscanner

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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