Cheapest return flights from Chicago to London in March from $481

Best time to book flights for Chicago (ORD) to London (LHR) flights at AirHint

AirHint found the following cheapest return flights from Chicago (ORD) to London (LHR) in March 2025 (see full year).

Return flights

22 Mar - 29 Mar Scandinavian Airlines
02 Mar - 16 Mar TAP
12 Mar - 28 Mar TAP
05 Mar - 30 Apr TAP
12 Mar - 28 Mar British Airways direct
05 Mar - 30 Apr British Airways direct
09 Mar - 23 Mar TAP
15 Mar - 23 Mar Scandinavian Airlines
13 Mar - 24 Mar Air Canada
09 Mar - 23 Mar British Airways direct
02 Mar - 16 Mar British Airways direct
15 Mar - 23 Mar Iberia direct
16 Mar - 01 Apr TAP
05 Mar - 21 Apr TAP
12 Mar - 25 Apr TAP
05 Mar - 21 Apr Iberia direct
12 Mar - 25 Apr Iberia direct
11 Mar - 26 Apr British Airways direct
16 Mar - 01 Apr Iberia 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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