Cheap flights from London to Chicago
Cheap return flights from London to Chicago
Find the best deals
All prices shown are per person based on return flights only. Prices found in the last 48 hours.
Chicago flight facts
What you need to know
What are the cheapest airlines?
- Norwegian Air
- British Airways
- American Airlines
These airlines usually offer the cheapest flights from London to Chicago.
What airlines fly indirectly?
- Lufthansa
- Air Canada
- United Airlines
These airlines fly from London to Chicago, but you’ll have at least one layover.
How long is the flight?
9 hours 30 minutes
This is the shortest flight time from London to Chicago.
Alternative flights from the UK to Chicago
Check out prices for other routes
Alternative flights from London
You might find cheaper flights nearby
Today alone, Netflights has searched over five flights. 05 / Feb / 2026 is currently the lowest priced day of the year to fly the London/Chicago route. There are around 35 flights on any given week from the UK to Chicago and the cheapest month to fly right now is February. Not suitable? Try running another search or viewing all cheap flight deals.
How to get cheap flights from London to Chicago
Tips and advice from our flight experts
You've searched for flights from London to Chicago. We've found 25 flights and compared them to give you the best offers. Norwegian Air is, on average, the cheapest for this route. Look out for them! The cheapest offer we've found is a one-way ticket for the route from London to Chicago on 10/06/2026 at 01:45 for £45.
We've scanned hundreds of airfares from dozens of airlines across the globe. In total, we've found 15 airlines that operate the 6,400 km flight from London to Chicago.
To find the best offers, consider booking 2-3 months in advance or looking for last-minute deals. The cheapest popular airline for this route is Norwegian Air, with an average flight duration of 9 hours 30 minutes. After selecting an offer, fill out your information and proceed with payment. We also recommend booking a hotel with us or using our flight + hotel service to save time and money.
Other popular destinations near Chicago
Where other people are flying to
