Flights from Chicago to London available from USD 435*

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Our best rates from Chicago to London

Fly in the next three months: flights from Chicago to London

USD

Chicago (ORD)to

London (LON)
Oct 07 2025 - Oct 08 2025
From
USD 519
Round trip
Economy

Chicago (ORD)to

London (LON)
Oct 07 2025 - Oct 15 2025
From
USD 519
Round trip
Economy

Chicago (ORD)to

London (LON)
Oct 07 2025 - Nov 01 2025
From
USD 519
Round trip
Economy

Chicago (ORD)to

London (LON)
Oct 07 2025 - Nov 06 2025
From
USD 519
Round trip
Economy

Chicago (ORD)to

London (LON)
Oct 08 2025 - Oct 15 2025
From
USD 519
Round trip
Economy

Chicago (ORD)to

London (LON)
Oct 08 2025 - Nov 02 2025
From
USD 519
Round trip
Economy

Chicago (ORD)to

London (LON)
Oct 08 2025 - Nov 04 2025
From
USD 519
Round trip
Economy

Chicago (ORD)to

London (LON)
Oct 09 2025 - Oct 12 2025
From
USD 519
Round trip
Economy

Chicago (ORD)to

London (LHR)
Oct 19 2025 - Nov 06 2025
From
USD 523
Round trip
Economy

Chicago (ORD)to

London (LGW)
Sep 30 2025 - Oct 03 2025
From
USD 519
Round trip
Economy

Chicago (ORD)to

London (LGW)
Oct 11 2025 - Oct 15 2025
From
USD 573
Round trip
Economy

Chicago (ORD)to

London (LGW)
Aug 09 2025 - Aug 15 2025
From
USD 677
Round trip
Economy

*Fares displayed have been collected within the last 72hrs and may no longer be available at the time of booking. We display fares for Economy Light as standard but it is possible to change your class of service during the booking process. You can also add baggage, meals and extra legroom to your trip during booking.

 

Blue image with a map of Iceland and text that reads: Include a little more of Iceland in your journey. Add a Stopover

Plan ahead for your trip from Chicago to London with Icelandair

USD
Plan ahead for your trip from Chicago to London with Icelandair
From
To
Fare type
Dates
Price
Chicago (ORD)London (LON)Round trip
/
Economy
Feb 06 2026 - Feb 19 2026

From

USD 519

Viewed 1 day ago

Chicago (ORD)London (LON)Round trip
/
Economy
Feb 06 2026 - Feb 21 2026

From

USD 519

Viewed 1 day ago

Chicago (ORD)London (LON)Round trip
/
Economy
Feb 06 2026 - Feb 22 2026

From

USD 519

Viewed 1 day ago

Chicago (ORD)London (LON)Round trip
/
Economy
Feb 06 2026 - Feb 27 2026

From

USD 519

Viewed 1 day ago

Chicago (ORD)London (LON)Round trip
/
Economy
Feb 06 2026 - Mar 06 2026

From

USD 519

Viewed 1 day ago

Chicago (ORD)London (LON)Round trip
/
Economy
Feb 07 2026 - Feb 19 2026

From

USD 519

Viewed 1 day ago

Chicago (ORD)London (LON)Round trip
/
Economy
Feb 07 2026 - Feb 20 2026

From

USD 519

Viewed 1 day ago

Chicago (ORD)London (LON)Round trip
/
Economy
Feb 07 2026 - Feb 23 2026

From

USD 519

Viewed 1 day ago

Chicago (ORD)London (LON)Round trip
/
Economy
Feb 07 2026 - Feb 26 2026

From

USD 519

Viewed 1 day ago

*Fares displayed have been collected within the last 72hrs and may no longer be available at the time of booking. We display fares for Economy Light as standard but it is possible to change your class of service during the booking process. You can also add baggage, meals and extra legroom to your trip during booking.

Flights to London from Chicago

Marvel in all the grandeur of Buckingham Palace, witness the iconic silhouette of Big Ben standing tall against the Thames, or immerse yourself in the artistic wonders of the National Portrait Gallery - these are just a few of the countless captivating sights that await you in London.

For an unparalleled in-flight experience, choose Icelandair to fly from Chicago (ORD) to London Heathrow (LHR) or Gatwick (LGW).

 

FAQs about travel from Chicago to London

Helpful information for US travelers visiting London

What is the flight duration from Chicago to London?

It takes around 8 hours to fly from Chicago O’Hare International (ORD) 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 also choose to add a Stopover in Iceland for up to 7 days at no extra airfare.

When is the best time to fly from Chicago (ORD) to London (LHR)?

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 flights from Chicago to London is generally between January and February, a quieter season in London and a good time to enjoy the city without the crowds.

Which airport in London will I fly to from Chicago?

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.

How can I find cheap flights from Chicago to London?

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

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

Does Icelandair offer direct flights from Chicago to London?

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

Visit our support hub for more information on flying from the US with Icelandair, including baggage allowances and visa information.