Flights Chicago → London — September 12, 2026

One way · Economy · 1 adult · price per person

The cheapest itinerary observed for Saturday, September 12, 2026 on the Chicago–London route: 1 stop itinerary (2 flights) via Boston Logan (BOS), from Chicago O'Hare (ORD) to London Heathrow (LHR), first flight JetBlue B6112, departs 9:38 AM, arrives 6:30 AM the next day, total travel time 14h 52m including layovers, flight time 9h 20m (layovers excluded), $457 per person. Fare as listed by Aviasales: carry-on bag included, checked bag not included, changes not allowed, non-refundable. Price found in an Aviasales search on September 10, 2026 and read by AirSource on September 10, 2026, 19:00 UTC: it is not guaranteed and is confirmed on Aviasales at booking time. The cheapest direct flight observed: United Airlines UA920, from Chicago O'Hare (ORD) to London Heathrow (LHR), departs 6:05 PM, arrives 8:30 AM the next day, direct, 8h 25m, $823 per person. Fare as listed by Aviasales: carry-on bag not included (personal item only), checked bag not included, changes allowed for a fee, non-refundable.