HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Heathrow

$224+ Cheap flights from Chicago (CHI) to Heathrow (LHR)

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 9/28. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — LHR
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Chicago to Heathrow 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 to London Heathrow are usually found in April or February, booked 68 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Chicago to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Heathrow (LHR). 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 July 31, 2025.

Round-trip from

$518
(Kiwi.com)

One-way from

$224
(oojo)

Popular in

June

Cheapest in

April

Average price

$978

Good round-trip deal

$622 or less

Good one-way deal

$388 or less
From Chicago (CHI) to London Heathrow
Search Deals
One-way flight from Chicago (CHI) to London Heathrow
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($216 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals
Price to beat on a round-trip flight from Chicago (CHI) to London Heathrow.
Search Deals
Price to beat on a one-way flight from Chicago (CHI) to London Heathrow.
Search Deals

Find flight deals from Chicago to Heathrow

Cheapest flights from Chicago to Heathrow
Explore the most affordable flight options available from Chicago to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Mon 9/294:20 pmORD - LHR
1 stop16h 00mAustrian Airlines
Tue 10/216:00 amLHR - ORD
1 stop13h 20mAustrian Airlines
Deal found 7/31$518
This Delta deal was found by Cheapflights users on 7/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/253:35 pmORD - LHR
1 stop13h 00mDelta
Fri 12/59:00 amLHR - ORD
1 stop12h 10mDelta
Deal found 7/31$519
This Icelandair deal was found by Cheapflights users on 7/31. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/146:30 pmORD - LHR
1 stop10h 20mIcelandair
Tue 11/1812:15 pmLHR - ORD
1 stop11h 05mIcelandair
Deal found 7/31$520
This United Airlines deal was found by Cheapflights users on 7/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/14:00 pmORD - LHR
Nonstop8h 20mUnited Airlines
Tue 10/218:30 amLHR - ORD
Nonstop9h 00mUnited Airlines
Deal found 7/31$521
This Delta deal was found by Cheapflights users on 7/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/107:07 pmMDW - LHR
1 stop12h 23mDelta
Tue 8/191:05 pmLHR - MDW
1 stop14h 39mDelta
Deal found 7/30$523
This Iberia deal was found by Cheapflights users on 7/31. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/93:04 pmORD - LHR
1 stop9h 56mIberia
Thu 11/2011:00 amLHR - ORD
Nonstop8h 50mIberia
Deal found 7/31$526
This Virgin Atlantic deal was found by Cheapflights users on 7/30. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2310:35 amMDW - LHR
1 stop14h 40mVirgin Atlantic
Tue 10/76:15 amLHR - MDW
2 stops18h 10mVirgin Atlantic
Deal found 7/30$529
This oojo deal was found by Cheapflights users on 7/30. 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.
Sun 11/97:20 pmORD - LHR
2 stops15h 05mScandinavian Airlines
Fri 11/146:40 amLHR - ORD
2 stops16h 05mScandinavian Airlines
Deal found 7/30$545
This Cheapflightsfares deal was found by Cheapflights users on 7/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/19:45 pmORD - LHR
Nonstop7h 50mBritish Airways
Sun 12/73:45 pmLHR - ORD
Nonstop9h 00mBritish Airways
Deal found 7/30$549
This Ovago deal was found by Cheapflights users on 7/30. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/307:05 pmORD - LHR
1 stop11h 55mSWISS
Fri 10/1711:05 amLHR - ORD
Nonstop9h 05mSWISS
Deal found 7/30$559
This Booking.com deal was found by Cheapflights users on 7/31. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/199:55 amORD - LHR
2 stops14h 35mMultiple Airlines
Sat 8/306:00 amLHR - ORD
1 stop15h 55mMultiple Airlines
Deal found 7/31$560
This KLM deal was found by Cheapflights users on 7/30. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/137:15 pmMDW - LHR
1 stop11h 55mKLM
Sat 9/201:05 pmLHR - MDW
1 stop14h 05mKLM
Deal found 7/30$625

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago to Heathrow 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 July 31, 2025.
Use the filters below to find and compare flights from Chicago to London Heathrow Airport that are best for you.

Fly from

Chicago

Fly to

Heathrow

Route

Depart

Return

Price

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 9/29

4:20 pm-2:20 pm

1 stop16h 00m

London Heathrow

Tue 10/21

6:00 am-1:20 pm

1 stop13h 20m

$518

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 11/25

3:35 pm-10:35 am

1 stop13h 00m

London Heathrow

Fri 12/5

9:00 am-3:10 pm

1 stop12h 10m

$519

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Fri 11/14

6:30 pm-10:50 am

1 stop10h 20m

London Heathrow

Sat 11/22

12:15 pm-5:20 pm

1 stop11h 05m

$520

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 10/1

4:00 pm-6:20 am

Nonstop8h 20m

London Heathrow

Thu 10/16

8:30 am-11:30 am

Nonstop9h 00m

$521

ChicagoLondon

MDW - LHR

MDWLHR

Chicago Midway

Sun 8/10

7:07 pm-1:30 pm

1 stop12h 23m

London Heathrow

Tue 8/19

1:05 pm-9:44 pm

1 stop14h 39m

$523

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 11/9

3:04 pm-7:00 am

1 stop9h 56m

London Heathrow

Thu 11/20

5:25 pm-5:38 pm

2 stops30h 13m

$526

ChicagoLondon

MDW - LHR

MDWLHR

Chicago Midway

Tue 9/23

10:35 am-7:15 am

1 stop14h 40m

London Heathrow

Tue 10/7

6:15 am-6:25 pm

2 stops18h 10m

$529

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 8/13

5:40 pm-7:20 am

Nonstop7h 40m

London Heathrow

Sat 8/30

8:15 am-3:45 pm

1 stop13h 30m

$533

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Thu 8/21

10:35 pm-12:15 pm

Nonstop7h 40m

London Heathrow

Thu 9/4

6:10 am-1:30 pm

1 stop13h 20m

$543

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 11/9

7:20 pm-4:25 pm

2 stops15h 05m

London Heathrow

Fri 11/14

6:40 am-4:45 pm

1 stop16h 05m

$545

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Showing 1-10 of 21 results
1
2
3

The best insider tips for Chicago to London Heathrow Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Chicago to London Heathrow Airport trip
Airlines
British Airways

BA's Club Suite offers private pods with doors, available on A350 and most 777 aircraft.


BA's World Traveller Plus offers extra seat width and legroom, ideal for long-haul comfort.

Read more about British Airwaysby Gabriel Leigh
Iberia

Iberia's premium economy offers 37-inch legroom, footrests, and noise-canceling headphones for long-haul comfort.


Iberia offers two hot meal options on long-haul flights, with special meals available upon request.

Read more about Iberiaby Emily Zemler
Airports
ORD

For a smooth departure from ORD, consider taking the "L" train to avoid Chicago traffic delays, especially during peak hours.

Read more about ORDby Ramsey Qubein
LHR

Upon arrival at LHR, the Heathrow Express offers the fastest route to central London, reaching Paddington Station quickly.

Read more about LHRby Ramsey Qubein
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on British Airways

Gabriel Leigh

Gabriel Leigh

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 Zemler

Emily Zemler

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

Ramsey Qubein

Ramsey Qubein

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

Best time to book a flight from Chicago to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Chicago 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 to London Heathrow Airport

How far ahead should I book a flight from Chicago to London Heathrow Airport?

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Heathrow. Price data was last updated on July 25, 2025.

To ensure you get the cheapest price possible for a flight from Chicago to London Heathrow Airport, you should look to book at least 68 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Chicago to London Heathrow Airport?

Currently, November is the cheapest month in which you can book a flight from Chicago to London Heathrow Airport (average of $661). Flying from Chicago to London Heathrow Airport in June is currently the most expensive (average of $1,097). 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 CHI to LHR?

Find hourly flight availability from Chicago to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 31, 2025.

When flying from Chicago to London Heathrow Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 17% versus a flight in the afternoon.

What is the cheapest day to fly from Chicago to London Heathrow Airport?

Use this chart to determine the cheapest time to fly round-trip from Chicago to Heathrow. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Chicago to London Heathrow Airport flight should consider departing on Wednesday mornings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Chicago to London Heathrow Airport

Explore weekly flight availability from Chicago to Heathrow. 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 July 31, 2025.

The most flights from CHI to LHR are scheduled on a Monday (57 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (52 on average).

What’s the top layover airport for flights from Chicago to London Heathrow Airport?

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

Reykjavik (KEF) – chosen by Cheapflights users on 75% of 1-stop itineraries from Chicago to London Heathrow Airport on Cheapflights.

What’s the cheapest layover airport for flights from Chicago to London Heathrow Airport?

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

Lisbon (LIS) is the most affordable 1-stop option, with an average round-trip price of $494.

What’s the fastest layover option from Chicago to London Heathrow Airport?

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

Flights via Dublin (DUB) have the shortest average one-way travel time for 1-stop routes: 10h 03m.

Which airport typically offers the quickest layover for flights from Chicago to London Heathrow Airport?

Average layover duration for 1-stop one-way flights from Chicago to London Heathrow Airport, 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 09m.

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated July 31, 2025.
Peruse reviews from past customers who have flown with Delta, KLM, and Austrian Airlines from Chicago to London Heathrow Airport 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.
Delta
8.0
Very good
7,981 reviews

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,981 reviews

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Austrian Airlines
7.6
Good
823 reviews
Delta
8.0
Very good
7,981 reviews

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.5
Good
1,465 reviews
Delta
8.0
Very good
7,981 reviews

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,686 reviews
Delta
8.0
Very good
7,981 reviews

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Chicago to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Chicago to London Heathrow Airport round-trip?

    Our cheapest airline available from Chicago to London Heathrow Airport is Austrian Airlines. Our recent data shows that you can find tickets from as low as $518 on this airline. Additional options worth looking into are Delta and United Airlines, starting at $519 and $520 round-trip. You may be able to fly from Chicago to London Heathrow Airport for 35% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Chicago to London Heathrow Airport one-way?

    To fly one-way, consider booking your trip with TAP AIR PORTUGAL, which is currently one of the cheapest options available, starting at $224. WestJet flights start at $233 while deals on Icelandair start at $262 one-way.

  • What are the most reliable airlines from Chicago to London Heathrow Airport?

    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 to London Heathrow Airport on time: Air Canada (66%), Austrian Airlines (66%), United Airlines (66%).

  • What are the cheapest flights from Chicago to London Heathrow Airport?

    On average you can expect to pay $2,829 for a flight from Chicago to London Heathrow Airport. The cheapest flight overall is $210 while the most popular route, (Chicago O'Hare Intl - London Heathrow) is currently priced at $426.

  • Where are the most common layover locations when flying from Chicago to London Heathrow Airport?

    Chicago to London Heathrow Airport flights have a layover in Reykjavik most often.

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

    Harpa, Hallgrímskirkja, and Laugardalslaug Geothermal Pool are currently the most popular points of interest in Reykjavik at the moment. Harpa, Hallgrímskirkja, and Laugardalslaug Geothermal Pool can be accessed by traveling approximately 23.3 mi, 23.2 mi, and 24.6 mi, respectively from Reykjavik Keflavik Intl. Travelers in need of a car in Reykjavik can rent one for about $69 per day.

  • Where are the least popular layover locations for Chicago to London Heathrow Airport flights?

    Chicago to London Heathrow Airport flights that have layovers will least frequently stop in Dublin.

  • Can I find deals for flights from Chicago to Heathrow that include hotel bookings?

    Yes. In addition to deals on Chicago to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Heathrow.

  • Can I find deals for business class flights from Chicago to Heathrow?

    Yes. Cheapflights offers flight deals from Chicago to Heathrow 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 to London Heathrow Airport?

    Currently, November is the cheapest month in which you can book a flight from Chicago to London Heathrow Airport (average of $661). Flying from Chicago to London Heathrow Airport in June is currently the most expensive (average of $1,097). 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 Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Hayes
Thornton Heath
Harrow
Canterbury
Dover
Stratford-upon-Avon
Orpington
Watford
Northampton
Gatwick
Borehamwood
Dartford
Broadway
Aylesbury
Chelmsford
Folkestone
Southend-on-Sea
Chichester
Swindon

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 Chicago to Heathrow

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
Midway to Heathrow flights
O'Hare Intl to Stansted flights
O'Hare Intl to Luton flights
St. Louis to Heathrow flights
St. Louis to Gatwick flights
St. Louis to London City flights
Midway to Gatwick flights
St. Louis to Stansted flights
Peoria to Heathrow flights
St. Louis to Luton flights
Moline to Heathrow flights
Midway to London City flights
Bloomington to Heathrow flights
Peoria to Gatwick flights
Evansville to Heathrow flights
Peoria to London City flights
Springfield to Heathrow flights
Moline to Gatwick flights
Champaign to Heathrow flights
Midway to Stansted flights
Evansville to Gatwick flights
Dubuque to Heathrow flights
Midway to Luton flights
Bloomington to Gatwick flights

Top 10 airlines flying from Chicago to Heathrow

Discover the top 10 airlines that operate flights from Chicago to Heathrow. 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$51Average$610FlexibilityNo cancel feeOn-time62%
SWISSCheapest$257Average$671FlexibilityNo cancel feeOn-time79%
DeltaCheapest$345Average$732FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$358Average$597FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$430Average$917FlexibilityNo cancel feeOn-time76%
IcelandairCheapest$470Average$592FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$508Average$804FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$552Average$804FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$568Average$758FlexibilityNo cancel feeOn-time76%
IberiaCheapest$580Average$741FlexibilityNo cancel feeOn-time77%

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.