What airlines fly to London Heathrow Airport?

British Airways, Iberia and American Airlines are the top three most popular airlines that fly to London Heathrow Airport from Chicago according to our data. British Airways is the first choice among our users, with 47% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 15 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

How many flights depart from Chicago to London Heathrow Airport on average per week?

As of July 2025, there are 394 flights per week flying from Chicago to London Heathrow Airport. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.

What is the cheapest airline that flies from Chicago to London Heathrow?

Icelandair and TAP AIR PORTUGAL are the most popular carriers operating from Chicago to London Heathrow

How many flights depart from Chicago to London Heathrow Airport on average per day?

As of July 2025, there are 56 flights per day flying from Chicago to London Heathrow Airport. The most common time of day flights depart is 9:00PM, with 65% of flights taking off in the evening.

When did momondo last update prices for flights from Chicago to London Heathrow Airport?

Prices for flights from Chicago to London Heathrow Airport refresh daily.

How many operators does momondo search for flights from Chicago to London Heathrow Airport?

The number of operators available for flights from Chicago to London Heathrow Airport is 15 as of July 2025.

How old do you have to be to fly from Chicago to London Heathrow Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to London Heathrow Airport.

What documentation or ID do you need to fly to London Heathrow Airport?

The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$165 Cheap Flights from Chicago to London Heathrow Airport in 2025

Q: What is the typical price of a round-trip flight between Chicago and London Heathrow Airport?

Prices are currently low for flights on this route. Typical prices usually range from $828 to $1,149. The lowest price recently found on this route was $415.

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Chicago to London

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

7:20 pm - 4:25 pmORD-LHR

15h 05m2 stops

5:30 pm - 4:45 pmLHR-ORD

29h 15m2 stops

$415Scandinavian Airlines

Find Deal

Sat, Dec 6 - Thu, Dec 11

7:20 pm - 6:30 pmORD-LHR

17h 10m2 stops

7:05 am - 4:45 pmLHR-ORD

15h 40m2 stops

$417Scandinavian Airlines

Find Deal

Fri, Nov 7 - Thu, Nov 13

5:55 pm - 11:25 amORD-LHR

11h 30m1 stop

6:50 am - 11:55 amLHR-ORD

11h 05m1 stop

$472Lufthansa

Find Deal

Tue, Aug 5 - Tue, Aug 26

9:30 pm - 10:10 pmORD-LHR

18h 40m1 stop

7:30 am - 5:50 pmLHR-ORD

16h 20m1 stop

$473Finnair

Find Deal

Wed, Aug 13 - Thu, Aug 28

9:30 pm - 10:10 pmORD-LHR

18h 40m1 stop

7:30 am - 5:50 pmLHR-ORD

16h 20m1 stop

$474Finnair

Find Deal

Tue, Aug 19 - Wed, Aug 27

7:25 pm - 8:20 pmORD-LHR

18h 55m1 stop

8:35 pm - 5:20 pmLHR-ORD

26h 45m1 stop

$481Icelandair

Find Deal

Sat, Oct 4 - Tue, Nov 4

1:06 pm - 5:55 amORD-LHR

10h 49m1 stop

8:30 am - 11:25 amLHR-ORD

8h 55mnonstop

$483Lufthansa

Find Deal

Wed, Aug 13 - Wed, Aug 27

4:55 pm - 6:50 amORD-LHR

7h 55mnonstop

6:20 am - 3:45 pmLHR-ORD

15h 25m1 stop

$488British Airways

Find Deal

Wed, Aug 6 - Tue, Aug 12

4:55 pm - 6:50 amORD-LHR

7h 55mnonstop

1:10 pm - 3:55 pmLHR-ORD

8h 45mnonstop

$490British Airways

Find Deal

Tue, Aug 5 - Tue, Aug 26

6:30 pm - 10:50 amORD-LHR

10h 20m1 stop

12:15 pm - 5:20 pmLHR-ORD

11h 05m1 stop

$501Icelandair

Find Deal

Sun, Nov 30 - Sat, Dec 6

Scandinavian Airlines flights from Chicago to London Heathrow Airport

Our best Scandinavian Airlines deals on Chicago to London Heathrow Airport flight tickets

Scandinavian Airlines

Dec 6

ORD7:20 pmChicago O'Hare Intl

15h 05m

2 stops

LHR4:25 pmLondon Heathrow

Dec 11

LHR5:30 pmLondon Heathrow

29h 15m

2 stops

ORD4:45 pmChicago O'Hare Intl

$415

Find similar

Scandinavian Airlines

Nov 7

ORD7:20 pmChicago O'Hare Intl

17h 10m

2 stops

LHR6:30 pmLondon Heathrow

Nov 13

LHR7:05 amLondon Heathrow

15h 40m

2 stops

ORD4:45 pmChicago O'Hare Intl

$417

Find similar

Scandinavian Airlines

Dec 6

ORD7:20 pmChicago O'Hare Intl

15h 05m

2 stops

LHR4:25 pmLondon Heathrow

Dec 11

LHR10:20 amLondon Heathrow

12h 25m

1 stop

ORD4:45 pmChicago O'Hare Intl

$418

Find similar

Finnair flights from Chicago to London Heathrow Airport

Our best Finnair deals on Chicago to London Heathrow Airport flight tickets

Finnair

Aug 13

ORD9:30 pmChicago O'Hare Intl

18h 40m

1 stop

LHR10:10 pmLondon Heathrow

Aug 28

LHR7:30 amLondon Heathrow

16h 20m

1 stop

ORD5:50 pmChicago O'Hare Intl

$473

Find similar

Finnair

Aug 19

ORD9:30 pmChicago O'Hare Intl

18h 40m

1 stop

LHR10:10 pmLondon Heathrow

Aug 27

LHR7:30 amLondon Heathrow

16h 20m

1 stop

ORD5:50 pmChicago O'Hare Intl

$474

Find similar

Finnair

Aug 13

ORD9:30 pmChicago O'Hare Intl

17h 10m

1 stop

LHR8:40 pmLondon Heathrow

Aug 27

LHR7:30 amLondon Heathrow

16h 20m

1 stop

ORD5:50 pmChicago O'Hare Intl

$475

Find similar

How to get the cheapest flight ticket from Chicago to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the typical price of a round-trip flight between Chicago and London Heathrow Airport?

What is the cheapest month to fly to London Heathrow Airport?

The month of November is, on average, the cheapest month to fly to London Heathrow Airport from Chicago, with most prices found around $661. If you’re not able to fly to London Heathrow Airport in November, then April is your next best option. Flight prices from Chicago to London Heathrow Airport during April average around $670.

What is the cheapest day to depart on your flight to London Heathrow Airport?

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $763. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $889.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the morning. momondo users have found flights departing from Chicago to London Heathrow Airport in the morning for as low as $689. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the afternoon are often more expensive with an average ticket price of $824.

What is the cheapest Chicago to London Heathrow flight route?

Fly from Chicago O'Hare Intl to London Heathrow for the best Chicago - London Heathrow flight prices

How far in advance should I book a flight to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $802 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Chicago for as low as $715 on momondo.

What cabin class options are available on Chicago to London Heathrow flights?

There are 4 cabin classes available to choose from on Chicago to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Chicago to London Heathrow Airport flights?

You could potentially save up to 24% on your flight if you consider stops on a Chicago to London Heathrow Airport flight.

How have Chicago to London Heathrow Airport flight prices changed over time?

As of July 2025, prices for Chicago to London Heathrow Airport flights are approximately 39% cheaper when compared to flights at the same time last year.

When to book flights from Chicago to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Chicago to London Heathrow Airport (CHI to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to London Heathrow Airport

Best Price Found	$165
Fastest flight time	7h 40m
Direct flights	Every day

The best one-way flight to London Heathrow Airport from Chicago in the past 72 hours is $165. The best round-trip flight deal from Chicago to London Heathrow Airport found on momondo in the last 72 hours is $415.

The fastest flight from Chicago to London Heathrow Airport takes 7h 40m

Direct flights go from Chicago to London Heathrow Airport every day.

Search flight deals

How far is Chicago to London Heathrow by plane?
There are 3933.5 mi between Chicago and London Heathrow. A reasonable flight in good conditions will take 7h 40m.
When did momondo last update prices for flights from Chicago to London Heathrow Airport?
Prices for flights from Chicago to London Heathrow Airport refresh daily.
How many operators does momondo search for flights from Chicago to London Heathrow Airport?
The number of operators available for flights from Chicago to London Heathrow Airport is 15 as of July 2025.
How old do you have to be to fly from Chicago to London Heathrow Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Chicago to London Heathrow Airport?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Chicago to London Heathrow Airport is Boeing 787-9 Dreamliner (41.75% of total bookings). The next most popular plane models are Boeing 777 (18.72%), Boeing 787-10 Dreamliner (17.80%), and Boeing 767-300 (13.58%).
What is the most popular airline from Chicago to London Heathrow Airport?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Chicago to London Heathrow Airport is British Airways (30% of total bookings). The next most popular airlines are Iberia (21%), United Airlines (13%), and American Airlines (13%).

Best airlines flying from Chicago to London Heathrow Airport

Compare and see reviews for airlines that fly from Chicago to London Heathrow Airport with momondo

Airline	Rating	Free Cancellation	Price
SWISS	PriceFrom $257	Free Cancellation	Rating 7.5 1,655 reviews	Search SWISS flights
Delta	PriceFrom $345	Free Cancellation	Rating 8.0 7,952 reviews	Search Delta flights
Scandinavian Airlines	PriceFrom $381	Free Cancellation	Rating 7.3 1,419 reviews	Search Scandinavian Airlines flights
Lufthansa	PriceFrom $430	Free Cancellation	Rating 6.8 7,199 reviews	Search Lufthansa flights
Icelandair	PriceFrom $468	Free Cancellation	Rating 7.0 514 reviews	Search Icelandair flights
JetBlue	PriceFrom $505	Free Cancellation	Rating 7.3 2,910 reviews	Search JetBlue flights
TAP AIR PORTUGAL	PriceFrom $508	Free Cancellation	Rating 7.1 1,914 reviews	Search TAP AIR PORTUGAL flights
Aer Lingus	PriceFrom $541	Free Cancellation	Rating 7.1 1,152 reviews	Search Aer Lingus flights
Finnair	PriceFrom $569	Free Cancellation	Rating 7.6 1,312 reviews	Search Finnair flights
Iberia	PriceFrom $581	Free Cancellation	Rating 7.0 2,826 reviews	Search Iberia flights

Alaska Airlines Flights From Chicago to London Heathrow Airport
Alaska Airlines operates around 41 flights from Chicago to London Heathrow Airport every week. The average price of these flights found in the last 72 hours has been $973, but momondo users have found Alaska Airlines deals from Chicago to London Heathrow Airport from as low as $809 round-trip. Alaska Airlines has been scored 8.0/10 in 10,000 reviews.
Finnair Flights From Chicago to London Heathrow Airport
Finnair (7.6/10 from 1,312 reviews) operates around 34 flights from Chicago to London Heathrow Airport in any given week. The average Finnair airfare for this route is around $755, with deals from around $569 rare but found on momondo. Referenced prices are for round-trip Chicago to London Heathrow Airport flight searches in the last 72 hours.

Hounslow

Gatwick

Croydon

Luton

Slough

Dover

Dartford

Guildford

Stansted

Hayes

Milton Keynes

Salisbury

Swindon

Ilford

Colchester

Stratford-upon-Avon

Chelmsford

Canterbury

Watford

Richmond

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to London?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Chicago.

Can I find flights from Chicago to London with flexible booking policies on momondo?

Flights from Chicago to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Chicago to London?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Chicago to London.

I’m not ready to book a flight from Chicago to London right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Chicago to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Tue 7/15

Tue 7/22

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London

Popular cities in the United Kingdom

Flights to London Gatwick Airportfrom $319

Flights to London City Airportfrom $457

Flights to London Stansted Airportfrom $362

Flights to London Luton Airportfrom $387

Flights to London Southend Airportfrom $477

Flights to Glasgow Intl Airportfrom $410

Flights to Belfast Intl Airportfrom $475

Flights to Belfast City Airportfrom $475

Cheap flights from Chicago to London from $165

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to London departing on 10/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Chicago to London

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Scandinavian Airlines flights from Chicago to London Heathrow Airport

Our best Scandinavian Airlines deals on Chicago to London Heathrow Airport flight tickets

Finnair flights from Chicago to London Heathrow Airport

Our best Finnair deals on Chicago to London Heathrow Airport flight tickets

See travel insights to London from

How to get the cheapest flight ticket from Chicago to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Chicago and London Heathrow Airport?

What is the cheapest month to fly to London Heathrow Airport?

What is the cheapest day to depart on your flight to London Heathrow Airport?

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $763. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $889.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

What is the cheapest Chicago to London Heathrow flight route?

Fly from Chicago O'Hare Intl to London Heathrow for the best Chicago - London Heathrow flight prices

How far in advance should I book a flight to London Heathrow Airport?

What cabin class options are available on Chicago to London Heathrow flights?

There are 4 cabin classes available to choose from on Chicago to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Chicago to London Heathrow Airport flights?

You could potentially save up to 24% on your flight if you consider stops on a Chicago to London Heathrow Airport flight.

How have Chicago to London Heathrow Airport flight prices changed over time?

As of July 2025, prices for Chicago to London Heathrow Airport flights are approximately 39% cheaper when compared to flights at the same time last year.

What is the cheapest airline that flies from Chicago to London Heathrow?

Icelandair and TAP AIR PORTUGAL are the most popular carriers operating from Chicago to London Heathrow

What airlines fly to London Heathrow Airport?

How many flights depart from Chicago to London Heathrow Airport on average per day?

As of July 2025, there are 56 flights per day flying from Chicago to London Heathrow Airport. The most common time of day flights depart is 9:00PM, with 65% of flights taking off in the evening.

How many flights depart from Chicago to London Heathrow Airport on average per week?

As of July 2025, there are 394 flights per week flying from Chicago to London Heathrow Airport. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.

When to book flights from Chicago to London Heathrow Airport

Cheap Chicago to London Heathrow Airport (CHI to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to London Heathrow Airport

Best Price Found

Fastest flight time

Direct flights

How far is Chicago to London Heathrow by plane?

When did momondo last update prices for flights from Chicago to London Heathrow Airport?

How many operators does momondo search for flights from Chicago to London Heathrow Airport?

How old do you have to be to fly from Chicago to London Heathrow Airport?

What documentation or ID do you need to fly to London Heathrow Airport?

What is the most popular plane model from Chicago to London Heathrow Airport?

What is the most popular airline from Chicago to London Heathrow Airport?

Best airlines flying from Chicago to London Heathrow Airport

Compare and see reviews for airlines that fly from Chicago to London Heathrow Airport with momondo

Alaska Airlines Flights From Chicago to London Heathrow Airport

Finnair Flights From Chicago to London Heathrow Airport

Traveling to a place near London?

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to London?

Can I find flights from Chicago to London with flexible booking policies on momondo?

How can momondo help me find flights from Chicago to London?

I’m not ready to book a flight from Chicago to London right now. Can momondo alert me if prices change?

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to London

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo