Flights from Chicago to London available from USD 519*

It takes around 8 hours to fly from Chicago to London Gatwick or Heathrow Airport. However, this does not account for any stopovers you have planned, which will extend your overall journey time.

When you book flights to London from Chicago with Icelandair you can extend your stopover in Iceland at no extra airfare.

The best time to visit London depends on what you’d like to do once you arrive. Spring in London is a sight to behold as cherry blossoms paint the streets beautiful shades of pink. It’s the perfect temperature for some sightseeing, too.

On the other hand, London’s festive spirit and celebrations during the winter are unrivaled. The cheapest time to book plane tickets from Chicago to London is between January and February as demand is generally at its lowest.

Passengers booking plane tickets from Chicago to London can fly into London Heathrow Airport (LHR) or Gatwick Airport (LGW).

You can use the flight finder tool above to select flights to your preferred airport.

Being flexible about when you fly, as well as which London airport you depart from can help you find a good deal on your tickets.

We also recommend checking our flight deals page regularly and booking in advance to secure the best airfare.

Passengers flying from Chicago to London with Icelandair will change at Keflavik International Airport. From there, you will fly directly to London. The flight from KEF to LHR is around 3 hours.