Cheap flights from Chicago to London
Round-trip fares from Chicago O'Hare International Airport (ORD) to London (All Airports) (LON) over the next few months. Cheapest right now: EUR 609. Based on recent samples, August 2026 currently looks like the cheapest month from EUR 609.
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Set a price alert| Depart | Return | Nights | Price | Book |
|---|---|---|---|---|
| Sun 02 Aug | Tue 25 Aug | 23 | EUR 609 | See deal |
| Sun 19 Jul | Thu 23 Jul | 4 | EUR 705 | See deal |
| Tue 21 Jul | Thu 23 Jul | 2 | EUR 842 | See deal |
| Wed 15 Jul | Sat 15 Aug | 31 | EUR 851 | See deal |
| Thu 02 Jul | Tue 07 Jul | 5 | EUR 880 | See deal |
| Fri 26 Jun | Tue 30 Jun | 4 | EUR 1111 | See deal |
Automatic checks 3 times per day. Prices may differ on the booking site due to some delay. Booking links may earn us a commission at no extra cost to you.