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

As of November 2025, there are 37 flights per day flying from Illinois to London Heathrow Airport. The most common time of day flights depart is 9:00PM, with 68% of flights taking off in the evening.

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 Illinois according to our data. British Airways is the first choice among our users, with 50% 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.

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

Iberia, Austrian Airlines, and JetBlue are the most popular carriers operating from Illinois to London Heathrow

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

265 flights are operational weekly from Illinois to London Heathrow Airport as of November 2025. The most popular departure day for this route is Wed, with 17% of flights per week taking off on this day.

How long does it take to fly to London Heathrow Airport?

On average, it takes 8h 43m to fly from Illinois to London Heathrow Airport if you fly out of Chicago (the most popular airport in Illinois) and into London Heathrow Airport (the most popular airport in London Heathrow Airport). If you’re flying out of Peoria and into London Heathrow Airport, then the flight time is around 10h 25m.

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

Prices for flights from Illinois to London Heathrow Airport were last updated today.

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

As of November 2025, there are 17 operators available to choose from for flights from Illinois to London Heathrow Airport.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois 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.

$300 Cheap Flights from Illinois to London Heathrow Airport in 2025/26

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Cheap round-trip flights

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7:20 pm - 9:35 amORD-LHR

32h 15m2 stops

10:20 am - 4:45 pmLHR-ORD

12h 25m1 stop

$557Scandinavian Airlines

Find Deal

sáb., feb. 14 - mié., feb. 18

7:25 pm - 11:55 amORD-LHR

10h 30m1 stop

1:05 pm - 6:15 pmLHR-ORD

11h 10m1 stop

$558Icelandair

Find Deal

mié., abr. 22 - lun., abr. 27

12:50 pm - 6:25 amMDW-LHR

11h 35m1 stop

6:30 am - 6:00 pmLHR-MDW

17h 30m2 stops

$626Delta

Find Deal

mié., dic. 3 - mié., dic. 10

6:00 am - 7:50 amBMI-LHR

19h 50m1 stop

8:40 am - 10:08 pmLHR-BMI

19h 28m2 stops

$626Delta

Find Deal

mié., feb. 4 - dom., feb. 8

1:25 pm - 5:55 amPIA-LHR

10h 30m1 stop

6:30 am - 4:40 pmLHR-PIA

15h 10m2 stops

$630Lufthansa

Find Deal

mié., mar. 4 - mar., mar. 10

1:49 pm - 7:05 amMDW-LHR

11h 16m1 stop

8:40 am - 6:36 pmLHR-MDW

15h 56m2 stops

$633Virgin Atlantic

Find Deal

lun., ene. 12 - jue., ene. 22

5:25 pm - 3:50 pmPIA-LHR

16h 25m2 stops

6:30 am - 4:40 pmLHR-PIA

15h 10m2 stops

$638Lufthansa

Find Deal

mié., mar. 4 - mar., mar. 10

9:34 am - 7:05 amMDW-LHR

15h 31m2 stops

6:30 am - 5:45 pmLHR-MDW

17h 15m2 stops

$638Virgin Atlantic

Find Deal

mié., feb. 18 - mié., feb. 25

6:00 am - 9:00 amBMI-LHR

21h 00m1 stop

12:30 pm - 10:08 pmLHR-BMI

15h 38m1 stop

$653KLM

Find Deal

mié., feb. 4 - dom., feb. 8

6:00 am - 9:00 amBMI-LHR

21h 00m1 stop

1:00 pm - 10:08 pmLHR-BMI

15h 08m2 stops

$658KLM

Find Deal

jue., feb. 12 - mar., feb. 17

Lufthansa flights from Illinois to London Heathrow Airport

Our best Lufthansa deals on Illinois to London Heathrow Airport flight tickets

Lufthansa

Dec 1

ORD9:50 pmChicago O'Hare Intl

15h 45m

1 stop

LHR7:35 pmLondon Heathrow

Dec 24

LHR11:10 amLondon Heathrow

13h 15m

1 stop

ORD6:25 pmChicago O'Hare Intl

$573

Find similar

Lufthansa

Dec 1

ORD9:50 pmChicago O'Hare Intl

15h 45m

1 stop

LHR7:35 pmLondon Heathrow

Dec 24

LHR11:10 amLondon Heathrow

13h 15m

1 stop

ORD6:25 pmChicago O'Hare Intl

$574

Find similar

Lufthansa

Nov 24

ORD9:50 pmChicago O'Hare Intl

12h 00m

1 stop

LHR3:50 pmLondon Heathrow

Dec 5

LHR8:30 amLondon Heathrow

17h 35m

1 stop

ORD8:05 pmChicago O'Hare Intl

$595

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TAP AIR PORTUGAL flights from Illinois to London Heathrow Airport

Our best TAP AIR PORTUGAL deals on Illinois to London Heathrow Airport flight tickets

TAP AIR PORTUGAL

Nov 30

ORD8:25 pmChicago O'Hare Intl

20h 15m

1 stop

LHR10:40 pmLondon Heathrow

Dec 10

LHR6:00 amLondon Heathrow

15h 00m

1 stop

ORD3:00 pmChicago O'Hare Intl

$564

Find similar

TAP AIR PORTUGAL

Dec 3

ORD7:10 pmChicago O'Hare Intl

14h 20m

1 stop

LHR3:30 pmLondon Heathrow

Dec 14

LHR6:00 amLondon Heathrow

14h 45m

1 stop

ORD2:45 pmChicago O'Hare Intl

$576

Find similar

TAP AIR PORTUGAL

Nov 30

ORD8:25 pmChicago O'Hare Intl

15h 05m

1 stop

LHR5:30 pmLondon Heathrow

Dec 25

LHR6:30 pmLondon Heathrow

26h 55m

1 stop

ORD3:25 pmChicago O'Hare Intl

$578

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Illinois to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

sáb. 2/14

7:20 pm-9:35 am

2 stops32h 15m

London Heathrow

mié. 2/18

10:20 am-4:45 pm

1 stop12h 25m

$557

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

mié. 4/22

7:25 pm-11:55 am

1 stop10h 30m

London Heathrow

lun. 4/27

1:05 pm-6:15 pm

1 stop11h 10m

$558

ChicagoLondon

MDW - LHR

MDWLHR

Chicago Midway

mié. 12/3

12:50 pm-6:25 am

1 stop11h 35m

London Heathrow

mié. 12/10

6:30 am-6:00 pm

2 stops17h 30m

$626

BloomingtonLondon

BMI - LHR

BMILHR

Bloomington-Normal

mié. 2/4

6:00 am-7:50 am

1 stop19h 50m

London Heathrow

dom. 2/8

8:40 am-10:08 pm

2 stops19h 28m

$626

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

mié. 3/4

1:25 pm-5:55 am

1 stop10h 30m

London Heathrow

mar. 3/10

6:30 am-4:40 pm

2 stops15h 10m

$630

ChicagoLondon

MDW - LHR

MDWLHR

Chicago Midway

lun. 1/12

1:49 pm-7:05 am

1 stop11h 16m

London Heathrow

jue. 1/22

8:40 am-6:36 pm

2 stops15h 56m

$633

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

mié. 3/4

5:25 pm-3:50 pm

2 stops16h 25m

London Heathrow

mar. 3/10

6:30 am-4:40 pm

2 stops15h 10m

$638

ChicagoLondon

MDW - LHR

MDWLHR

Chicago Midway

mié. 2/18

9:34 am-7:05 am

2 stops15h 31m

London Heathrow

mié. 2/25

6:30 am-5:45 pm

2 stops17h 15m

$638

BloomingtonLondon

BMI - LHR

BMILHR

Bloomington-Normal

mié. 2/4

6:00 am-9:00 am

1 stop21h 00m

London Heathrow

dom. 2/8

12:30 pm-10:08 pm

1 stop15h 38m

$653

BloomingtonLondon

BMI - LHR

BMILHR

Bloomington-Normal

jue. 2/12

6:00 am-9:00 am

1 stop21h 00m

London Heathrow

mar. 2/17

1:00 pm-10:08 pm

2 stops15h 08m

$658

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Illinois 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 cheapest month to fly to London Heathrow Airport?

The month of October is, on average, the cheapest month to fly to London Heathrow Airport from Illinois, with most prices found around $648. If you’re not able to fly to London Heathrow Airport in October, then February is your next best option. Flight prices from Illinois to London Heathrow Airport during February average around $671.

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

Our data shows that Tuesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $772. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $922.

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 evening. momondo users have found flights departing from Illinois to London Heathrow Airport in the evening for as low as $803. 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 $836.

What is the cheapest Illinois to London Heathrow flight route?

Fly from Chicago O'Hare Intl to London Heathrow for the best Illinois - 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 Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $794 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 Illinois for as low as $701 on momondo.

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

There are 4 cabin classes available to choose from on Illinois 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 Illinois to London Heathrow Airport flights?

You could potentially save up to 10% on your flight if you consider stops on a Illinois to London Heathrow Airport flight.

Cheap Illinois to London Heathrow Airport flight deals and tips

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

Best Price Found	$439
Fastest flight time	7h 40m
Direct flights	Every day

The best one-way flight to London Heathrow Airport from Illinois in the past 72 hours is $439. The best round-trip flight deal from Illinois to London Heathrow Airport found on momondo in the last 72 hours is $713.

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

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

Search flight deals

When did momondo last update prices for flights from Illinois to London Heathrow Airport?
Prices for flights from Illinois to London Heathrow Airport were last updated today.
How many operators does momondo search for flights from Illinois to London Heathrow Airport?
As of November 2025, there are 17 operators available to choose from for flights from Illinois to London Heathrow Airport.
How old do you have to be to fly from Illinois to London Heathrow Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois 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 Illinois to London Heathrow Airport?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Illinois to London Heathrow Airport is Boeing 787-9 Dreamliner (38.70% of total bookings). The next most popular plane models are Boeing 787-10 Dreamliner (18.69%), Boeing 767-300 (16.41%), and Boeing 777 (15.64%).

Best airlines flying from Illinois to London Heathrow Airport

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

Airline	Rating	Free Cancellation	Price
JetBlue	PriceFrom $51	Free Cancellation	Rating 7.2 2,902 reviews	Search JetBlue flights
SWISS	PriceFrom $257	Free Cancellation	Rating 7.5 1,788 reviews	Search SWISS flights
Scandinavian Airlines	PriceFrom $338	Free Cancellation	Rating 7.4 1,584 reviews	Search Scandinavian Airlines flights
Delta	PriceFrom $345	Free Cancellation	Rating 7.9 8,002 reviews	Search Delta flights
TAP AIR PORTUGAL	PriceFrom $450	Free Cancellation	Rating 7.1 2,070 reviews	Search TAP AIR PORTUGAL flights
Lufthansa	PriceFrom $460	Free Cancellation	Rating 6.8 7,579 reviews	Search Lufthansa flights
Icelandair	PriceFrom $481	Free Cancellation	Rating 7.0 581 reviews	Search Icelandair flights
Alaska Airlines	PriceFrom $487	Free Cancellation	Rating 8.0 11,326 reviews	Search Alaska Airlines flights
Aer Lingus	PriceFrom $515	Free Cancellation	Rating 7.2 1,377 reviews	Search Aer Lingus flights
Finnair	PriceFrom $542	Free Cancellation	Rating 7.6 1,334 reviews	Search Finnair flights

Gatwick

Hounslow

Milton Keynes

Dover

Luton

Slough

Guildford

Hayes

Dartford

Stratford-upon-Avon

Crawley

Brentwood

Chelmsford

Salisbury

Wembley

Folkestone

Romford

Ilford

Cobham

Swindon

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Illinois to London. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Illinois to London flights to just show those with flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Illinois.

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

Yes. momondo can track prices for Illinois to London flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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.

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Flights to Belfast Intl Airportfrom $510

Flights to Belfast City Airportfrom $510

Cheap flights from Illinois to London from $300

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to London departing on 1/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Find the cheapest flights from Illinois to London

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Lufthansa flights from Illinois to London Heathrow Airport

Our best Lufthansa deals on Illinois to London Heathrow Airport flight tickets

TAP AIR PORTUGAL flights from Illinois to London Heathrow Airport

Our best TAP AIR PORTUGAL deals on Illinois to London Heathrow Airport flight tickets

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Use the filters below to find and compare flights from Illinois to London Heathrow Airport that are best for you.

See travel insights to London from

How to get the cheapest flight ticket from Illinois 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 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 Tuesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $772. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $922.

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

What is the cheapest Illinois to London Heathrow flight route?

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

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

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

There are 4 cabin classes available to choose from on Illinois 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 Illinois to London Heathrow Airport flights?

You could potentially save up to 10% on your flight if you consider stops on a Illinois to London Heathrow Airport flight.

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

Iberia, Austrian Airlines, and JetBlue are the most popular carriers operating from Illinois to London Heathrow

What airlines fly to London Heathrow Airport?

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

As of November 2025, there are 37 flights per day flying from Illinois to London Heathrow Airport. The most common time of day flights depart is 9:00PM, with 68% of flights taking off in the evening.

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

265 flights are operational weekly from Illinois to London Heathrow Airport as of November 2025. The most popular departure day for this route is Wed, with 17% of flights per week taking off on this day.

How long does it take to fly to London Heathrow Airport?

Cheap Illinois to London Heathrow Airport flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

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

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

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

Best airlines flying from Illinois to London Heathrow Airport

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

Traveling to a place near London?

Why use momondo?

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

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

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

I’m not ready to book a flight from Illinois 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