AirHint found the following cheapest one-way flights from Chicago (ORD) to London (LHR) in May 2026 (see full year).
One-Way flights
| 12 May | jetBlue | ||
| 01 May | jetBlue | ||
| 16 May | Scandinavian Airlines | ||
| 12 May | Iberia | direct | |
| 25 May | WestJet | ||
| 14 May | WestJet | ||
| 18 May | United | direct | |
| 01 May | Iberia | direct | |
| 16 May | Iberia | direct | |
| 28 May | Icelandair |
Also check the deals for return flights from Chicago to London in May.
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