AirHint found the following cheapest return flights from Chicago (ORD) to London (LGW) in August 2026 (see full year).
Return flights
| 21 Aug - 30 Aug | SWISS | ||
| 20 Aug - 31 Aug | Aer Lingus | ||
| 06 Aug - 10 Aug | Spirit Airlines | ||
| 11 Aug - 18 Aug | Iberia | ||
| 09 Aug - 30 Aug | SWISS |
Also check the deals for one-way flights from Chicago to London in August.
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