HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
London

$354+ Cheap flights from O'Hare Intl (ORD) to London (LON)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/22. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LON
feb. 26 — mar. 51
jue. 2/26
jue. 3/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from O'Hare Intl to London with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.
Cheapflights Tip: The best prices from Chicago O'Hare Intl to London are usually found in February or November, booked 49 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from O'Hare Intl to London

Cheapest flights from O'Hare Intl to London
Explore the most affordable flight options available from O'Hare Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 27, 2026.

This oojo deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/217:25 pm
ORD
-
LHR
1 stop10h 30m
Icelandair
sáb. 5/21:05 pm
LHR
-
ORD
1 stop11h 10m
Icelandair
Deal found 1/25$519
This oojo deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 4/2410:25 pm
ORD
-
LHR
1 stop15h 55m
Icelandair
vie. 5/19:25 pm
LHR
-
ORD
1 stop26h 50m
Icelandair
Deal found 1/26$521
This Kiwi.com deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/16:40 am
ORD
-
LGW
1 stop17h 20m
Multiple Airlines
jue. 3/52:00 pm
LGW
-
ORD
1 stop25h 06m
Multiple Airlines
Deal found 1/25$521
This Kiwi.com deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/117:30 pm
ORD
-
LHR
1 stop19h 00m
Icelandair
mié. 3/258:35 pm
LHR
-
ORD
1 stop26h 45m
Icelandair
Deal found 1/25$522
This Kiwi.com deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/248:16 pm
ORD
-
LGW
2 stops27h 44m
Multiple Airlines
jue. 3/52:00 pm
LGW
-
ORD
1 stop25h 06m
Multiple Airlines
Deal found 1/26$522
This Mytrip deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/256:30 pm
ORD
-
STN
2 stops22h 20m
Multiple Airlines
mar. 3/36:30 am
STN
-
ORD
2 stops16h 50m
Multiple Airlines
Deal found 1/26$522
This FlightHub deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/210:25 pm
ORD
-
LHR
1 stop31h 30m
Icelandair
dom. 10/119:25 pm
LHR
-
ORD
1 stop26h 50m
Icelandair
Deal found 1/27$523
This oojo deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/307:25 pm
ORD
-
LGW
1 stop13h 15m
Icelandair
dom. 5/103:40 pm
LGW
-
ORD
1 stop11h 45m
Icelandair
Deal found 1/26$523
This KAYAK deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/87:30 pm
ORD
-
LHR
1 stop10h 20m
Icelandair
mié. 3/258:35 pm
LHR
-
ORD
1 stop26h 45m
Icelandair
Deal found 1/25$524
This Kiwi.com deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/298:06 am
ORD
-
LGW
1 stop16h 14m
Multiple Airlines
mar. 4/211:05 pm
LGW
-
ORD
1 stop15h 38m
Multiple Airlines
Deal found 1/26$524
This oojo deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/177:25 pm
ORD
-
LGW
1 stop13h 15m
Icelandair
sáb. 9/263:40 pm
LGW
-
ORD
1 stop32h 35m
Icelandair
Deal found 1/26$525
This Gotogate deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/57:25 pm
ORD
-
LHR
1 stop10h 30m
Icelandair
mié. 5/131:05 pm
LHR
-
ORD
1 stop14h 20m
Icelandair
Deal found 1/26$526

Find flight deals from O'Hare Intl to London

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$519
(oojo)

One-way from

$354
(Mytrip)

Popular in

June

Cheapest in

February

Average price

$646

Good round-trip deal

$641 or less

Good one-way deal

$398 or less
Provider with most accurate pricing for Chicago O'Hare Intl-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago O'Hare Intl-London (LON) flights.
Search Deals
From Chicago O'Hare Intl to London (LON)
Search Deals
One-way flight from Chicago O'Hare Intl to London (LON)
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($218 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Chicago O'Hare Intl to London (LON).
Search Deals
Price to beat on a one-way flight from Chicago O'Hare Intl to London (LON).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from O'Hare Intl to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated enero 27, 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to London that are best for you.

Fly from

O'Hare Intl

Fly to

London

Route

Depart

Return

Price

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

mié. 2/11

6:30 pm-3:05 pm

2 stops14h 35m

London Stansted

mié. 2/18

6:30 am-5:20 pm

2 stops16h 50m

$530

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

mar. 4/21

7:25 pm-3:30 pm

2 stops14h 05m

London Luton

mar. 4/28

9:40 am-6:15 pm

2 stops14h 35m

$543

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

mié. 2/25

6:30 pm-10:15 pm

2 stops21h 45m

London Stansted

mié. 4/8

10:45 pm-7:25 pm

2 stops26h 40m

$548

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

mar. 2/24

6:30 pm-8:05 pm

2 stops19h 35m

London Luton

jue. 3/5

9:00 am-5:20 pm

2 stops14h 20m

$549

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

dom. 4/12

6:00 pm-11:40 pm

2 stops23h 40m

London Luton

sáb. 4/18

6:30 pm-4:00 pm

2 stops27h 30m

$554

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

dom. 4/12

6:00 pm-4:25 pm

2 stops16h 25m

London Southend

vie. 4/17

8:05 pm-4:15 pm

2 stops26h 10m

$557

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

mié. 3/4

7:15 am-7:40 pm

2 stops30h 25m

London Stansted

vie. 3/13

8:05 am-9:05 pm

2 stops18h 00m

$561

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

mié. 3/11

8:20 pm-7:50 pm

2 stops18h 30m

London Luton

mié. 3/18

11:45 am-5:45 pm

2 stops35h 00m

$572

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

mié. 2/18

7:20 pm-4:00 pm

1 stop14h 40m

London Heathrow

jue. 2/26

7:30 pm-4:45 pm

1 stop27h 15m

$606

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

vie. 2/13

7:20 pm-8:55 am

2 stops31h 35m

London Heathrow

lun. 2/16

6:40 am-4:45 pm

1 stop16h 05m

$617

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 60 results
1
2
3
...
6

Compare providers for flights from O'Hare Intl to London

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from O'Hare Intl to London in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*2 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
Justfly.comPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago O'Hare Intl Airport-London flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago O'Hare Intl Airport-London flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago O'Hare Intl Airport-London flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago O'Hare Intl Airport-London flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago O'Hare Intl Airport-London flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from O'Hare Intl to London

Have a flexible travel schedule? Discover the best time to fly to London from O'Hare Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chicago O'Hare Intl Airport to London

How far ahead should I book a flight from Chicago O'Hare Intl Airport to London?

Use this chart to determine the optimal time to book a round-trip flight from O'Hare Intl to London. Price data was last updated on January 23, 2026.

The best time to book flights from Chicago O'Hare Intl Airport to London is 49 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to London?

Currently, June is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to London (average of $375). Flying from Chicago O'Hare Intl Airport to London in July is currently the most expensive (average of $608). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ORD to LON?

Find hourly flight availability from O'Hare Intl to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated enero 27, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Chicago O'Hare Intl Airport to London as you normally would.

Weekly flight availability from Chicago O'Hare Intl Airport to London

Explore weekly flight availability from O'Hare Intl to London. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated enero 27, 2026.

The most flights from ORD to LON are scheduled on a Monday (45 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (37 on average).

What’s the top layover airport for flights from Chicago O'Hare Intl Airport to London?

Share of 1-stop round-trip flights from Chicago O'Hare Intl Airport to London chosen by Cheapflights users in the past 12 months, using the same layover each way.

Reykjavik (KEF) – chosen by Cheapflights users on 67% of 1-stop itineraries from Chicago O'Hare Intl Airport to London on Cheapflights.

What’s the cheapest layover airport for flights from Chicago O'Hare Intl Airport to London?

Average round-trip fare for 1-stop flights from Chicago O'Hare Intl Airport to London, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Reykjavik (KEF) is the most affordable 1-stop option, with an average round-trip price of $490.

What’s the fastest layover option from Chicago O'Hare Intl Airport to London?

Shortest average travel time for 1-stop one-way flights from Chicago O'Hare Intl Airport to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Reykjavik (KEF) have the shortest average one-way travel time for 1-stop routes: 10h 23m.

Which airport typically offers the quickest layover for flights from Chicago O'Hare Intl Airport to London?

Average layover duration for 1-stop one-way flights from Chicago O'Hare Intl Airport to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Reykjavik (KEF) offer the fastest connection on this route, with an average layover time of 1h 00m.

How often are flights from Chicago to London delayed?

About 25% of weekly flights between Chicago and London have experienced delays in the past year, with the average delay time being 167 minutes.

What is the most punctual flight time for Chicago to London flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Chicago to London flights?

Over the last year, American Airlines have had the lowest number of delays on this route, with just 25% of flights being delayed.

The best insider tips for Chicago O'Hare Intl Airport to London flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Chicago O'Hare Intl Airport to London trip
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on British Airways

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Emily Zemler

Emily Zemler

Expert on Iberia

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on ORD and LHR

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated enero 27, 2026.
Peruse reviews from past customers who have flown with United Airlines, American Airlines, and Icelandair from Chicago O'Hare Intl Airport to London to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,206 reviews

Entertainment

7.1

Crew

8.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,206 reviews
United Airlines
7.4
Good
9,206 reviews

Entertainment

7.1

Crew

8.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
American Airlines
7.2
Good
11,198 reviews
United Airlines
7.4
Good
9,206 reviews

Entertainment

7.1

Crew

8.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Icelandair
7.1
Good
603 reviews
United Airlines
7.4
Good
9,206 reviews

Entertainment

7.1

Crew

8.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Iberia
7.0
Good
3,098 reviews
United Airlines
7.4
Good
9,206 reviews

Entertainment

7.1

Crew

8.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
British Airways
6.7
Okay
7,702 reviews
United Airlines
7.4
Good
9,206 reviews

Entertainment

7.1

Crew

8.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Chicago O'Hare Intl Airport to London?

    A quick flight from Chicago O'Hare Intl Airport to London can take about 8h. Scandinavian Airlines provides one of the quickest options available for as low as $622. The distance from Chicago O'Hare Intl Airport to London is about 3939 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Chicago O'Hare Intl Airport to London round-trip?

    Flying on JetBlue is currently your cheapest option to London, with prices starting at $51. Additional round-trip tickets that might be worth considering are offered by SWISS and Scandinavian Airlines, with the lowest prices starting at $257 and $331, respectively. You may be able to fly from Chicago O'Hare Intl Airport to London for 93% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to London one-way?

    One-way options have recently been found by users for as low as $135 on JetBlue. Other airlines that offer cheap prices include Icelandair from $218 and TAP AIR PORTUGAL from $237 one-way.

  • What are the most popular routes from Chicago O'Hare Intl Airport to London?

    Most travelers choose Chicago O'Hare Intl - London Heathrow, Chicago O'Hare Intl - London Gatwick or Chicago O'Hare Intl - London City when deciding on the best route from Chicago O'Hare Intl Airport to London.

  • What are the most reliable airlines from Chicago O'Hare Intl Airport to London?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Chicago O'Hare Intl Airport to London on time: Aer Lingus (73%), American Airlines (66%), Alaska Airlines (66%).

  • What are the cheapest flights from Chicago O'Hare Intl Airport to London?

    Looking at all options, your cheapest flight can be booked for $263. While the most popular route (Chicago O'Hare Intl - London Heathrow) can be booked for $412 on average, our data indicates $2,596 when flying from Chicago O'Hare Intl Airport to London.

  • Where are the most common layover locations when flying from Chicago O'Hare Intl Airport to London?

    Chicago O'Hare Intl Airport to London flights have a layover in Reykjavik most often.

  • What are some popular things to do or see while on a layover in Reykjavik?

    The majority of Reykjavik visitors spend their time at Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool. Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool can be accessed by traveling approximately 23.2 mi, 23.3 mi, and 24.6 mi, respectively from Reykjavik Keflavik Intl. Travelers can book a car rental at Reykjavik Keflavik Intl for about $52 per day to make their sightseeing more efficient.

  • Where are the least popular layover locations for Chicago O'Hare Intl Airport to London flights?

    Chicago O'Hare Intl Airport to London flights have a layover in Dublin least often.

  • Can I find deals for flights from O'Hare Intl to London that include hotel bookings?

    Yes. In addition to deals on O'Hare Intl to London flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from O'Hare Intl to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'Hare Intl to London.

  • Can I find deals for business class flights from O'Hare Intl to London?

    Yes. Cheapflights offers flight deals from O'Hare Intl to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to London?

    Currently, June is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to London (average of $375). Flying from Chicago O'Hare Intl Airport to London in July is currently the most expensive (average of $608). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Ilford
Hounslow
Southend-on-Sea
Harrow
Croydon
Eastleigh
Gatwick
Dartford
Dover
Winchester
Orpington
Watford
Hayes
Borehamwood
Aylesbury
Chipping Norton
Horley
Kingston upon Thames
Eastbourne
Sutton

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for O'Hare Intl to London

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Heathrow flights
O'Hare Intl to Gatwick flights
O'Hare Intl to London City flights
O'Hare Intl to Stansted flights
Midway to Heathrow flights
O'Hare Intl to Edinburgh flights
O'Hare Intl to Luton flights
O'Hare Intl to Manchester flights
Midway to Edinburgh flights
Midway to Gatwick flights
Midway to Manchester flights
O'Hare Intl to Leeds flights
O'Hare Intl to Birmingham flights
O'Hare Intl to Southampton flights
O'Hare Intl to Bristol flights
Midway to Birmingham flights
O'Hare Intl to Newcastle upon Tyne flights
O'Hare Intl to Liverpool flights
Midway to Stansted flights
Midway to Leeds flights
Midway to Luton flights
O'Hare Intl to Newquay flights
Midway to Bristol flights
Midway to Southampton flights
Midway to Grimsby flights
O'Hare Intl to Exeter flights
Midway to Newcastle upon Tyne flights
O'Hare Intl to Darlington flights
O'Hare Intl to Doncaster flights
O'Hare Intl to Grimsby flights
Midway to London City flights

Top 10 airlines flying from O'Hare Intl to London

Discover the top 10 airlines that operate flights from O'Hare Intl to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated enero 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$51Average$505FlexibilityNo cancel feeOn-time62%
SWISSCheapest$257Average$674FlexibilityNo cancel feeOn-time79%
Scandinavian AirlinesCheapest$331Average$568FlexibilityNo cancel feeOn-time77%
DeltaCheapest$345Average$902FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$427Average$577FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$471Average$679FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$480Average$1,108FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$499Average$782FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$516Average$769FlexibilityNo cancel feeOn-time76%
Alaska AirlinesCheapest$522Average$809FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.