Cheap flights from Chicago to London

from 240 USD · 15h 55m flight time

Prices last checked 8 July 2026. Fares change often - book the cheapest date, not the most convenient one.

Flights

Hotels

Fares from Chicago to London start at 240 USD, based on 1 live price points sampled just now. September tends to be the cheapest month to fly this route right now. 1 airline currently show fares here. Prices move fast, so treat this as a live baseline, not a locked-in quote.

Cheapest dates to fly - September is usually lowest

Depart date	Price (USD)
Thu, 9 Jul 2026	1,221
Thu, 16 Jul 2026	1,091
Tue, 4 Aug 2026	804
Sat, 8 Aug 2026	912
Sun, 30 Aug 2026	649
Wed, 2 Sep 2026	644
Sat, 1 May 2027	760
Thu, 9 Jul 2026	1,221
Thu, 16 Jul 2026	1,091
Tue, 4 Aug 2026	804
Sat, 8 Aug 2026	912
Sun, 30 Aug 2026	649

Airlines flying this route

Frequently asked questions

How much does a flight from Chicago to London cost?

Real fares currently start at 240 USD round trip, based on live price data.

What is the cheapest month to fly from Chicago to London?

September currently has the lowest average fares based on the live price calendar for this route.

Which airlines fly from Chicago to London?

Airlines currently showing live fares on this route: FI.

book your flight to London

Flights

Hotels

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