Flight prices from Chicago to London Heathrow

There’s no fixed price — fares between Chicago and London can vary a lot by day or time.

The lowest fare seen in the past 15 days was £333.

The lowest fares are often found with some flexibility in travel dates. If your plans are flexible, you’ll have a better chance of finding cheap flights.

Planning flights between Chicago and London? Don’t forget the airport options

Especially when flying to medium or large cities, it's worth checking all possible airport combinations before booking.

• Airports in Chicago: 3 airports are listed in Chicago - Midway, O'Hare, Rockford.
• Airports in London: London features 6 airports - City Airport, Gatwick, Heathrow, Luton, Southend, Stansted.

Check for differences in transport costs to and from each airport — they affect your total spend. Choosing the right airport can make a real difference in price and timing.

Adjust your flight filters for Chicago – London Heathrow

Jetcost gives you tools to search smarter. Pick your ideal price range, airline, departure time, and flight type — then compare offers from agencies like Expedia, eDreams, and more.

Other popular destinations

Planning a trip to United Kingdom? These cities are popular too: Edinburgh, Glasgow, London, Manchester, Newquay.

Sorting options let you see the most affordable flights first. Some results may include extra fees shown only at checkout — always read carefully to see what’s included.