Chicago to London Flights on Aer Lingus from $655.79*

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Book Chicago to London flight deals*

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Flights from Chicago to London

Aer Lingus offers flights to London Heathrow (LHR) from Chicago (ORD) with a fast connection in Dublin Airport's Terminal 2.

Why fly to London with Aer Lingus?

Book your flight to London with Aer Lingusand start your UK adventure with a warm welcome on board. Enjoy a complimentary meal and drink, relax with your choice of movies, shows, or music, and stay connected with Wi-Fi and mobile access — all designed to make your journey as comfortable and enjoyable as possible.

Things to do and places to see in London

The capital of Great Britain needs no introduction. A modern and vibrant city is waiting for you to show what it's got. There are plenty of things to do in London no doubt. Experience panoramic city views from the top of the London Eye or the viewing point at The Shard. Walk around the Shaftesbury Memorial Fountain at Piccadilly Circus or visit Tower Bridge.

Then, spend an afternoon in Hyde Park horseback riding or strolling around the Rose Garden. See relics from two of the ancient world's seven wonders at the British Museum - the Mausoleum of Halicarnassus and the Temple of Artemis at Ephesus where you can also view Imperial jades, Aztec art and the Classical Greek era Parthenon Marbles.

If you are looking for more excitement, take a boat ride to Greenwich. Catch the boat just outside Westminster bridge and sail down the Themes right to the small town of Greenwich where time started! Enjoy a walk in the park, take a look around the famous Cutty Sark merchant ship. During your visit to London, you can travel by tube or bus throughout the day getting from place to place as you wish.

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Book Chicago to London flight deals*

Book Chicago to London flight deals*
From
To
Fare Type
Dates
Price
Chicago (ORD)London (LHR)Roundtrip*
/
Economy
Mar 21 2026 - Mar 28 2026

From

$1,000.37

Seen: 18 hrs ago

Chicago (ORD)London (LHR)Roundtrip*
/
Economy
Jun 9 2026 - Jun 21 2026

From

$1,773.58

Seen: 13 hrs ago

Chicago (ORD)London (LHR)Roundtrip*
/
Economy
Jun 16 2026 - Jun 26 2026

From

$2,284.14

Seen: 21 hrs ago

Chicago (ORD)London (LON)Roundtrip*
/
Economy
May 6 2026 - May 15 2026

From

$673.80

Seen: 21 hrs ago

* Fares displayed include air transportation charges, taxes and fees. Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Fares are economy class and may include connections with our partner airlines. Modifying this information may result in a different fare. Additional baggage fees and charges for optional products and services may apply.