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

The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as £185. However, be on the lookout for offers from JetBlue and Icelandair, as they are both options that can get you from Illinois to London Heathrow Airport for a low price.

What are the most popular routes from Illinois to London Heathrow Airport?

The most popular route from Illinois to London Heathrow Airport is Chicago O'Hare Intl - London Heathrow. You may also consider Chicago Midway - London Heathrow or Lambert-St Louis - London Heathrow.

What are the cheapest flights from Illinois to London Heathrow Airport?

On average you can expect to pay £3,359 for a flight from Illinois to London Heathrow Airport. The cheapest flight overall is £297 while the most popular route, (Chicago O'Hare Intl - London Heathrow) is currently priced at £382.

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

No one likes to see their flight delayed. When booking a flight from Illinois to London Heathrow Airport consider choosing Lufthansa (82%), Air Canada (77%) or Austrian Airlines (77%) as they are the most reliable in getting you off to your destination on time.

What are the most popular airlines that fly from Illinois to London Heathrow Airport?

Consider American Airlines, Finnair or British Airways when booking your flight. These represent the most popular airlines when flying from Illinois to London Heathrow Airport.

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

To save on the cost of your flight from Illinois to London Heathrow Airport, book at least 60 days before your planned departure. Booking around this time can save you about 8% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £578 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £680.

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

February is one of the best times of the year to fly to London Heathrow Airport from Illinois. Prices for February average £602 per person but you can even find prices for as low as £353. The most expensive prices can be found in the month of June. Opting for a February flight can save you 37% on your journey compared to booking in June

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

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

How can I find direct flights from Illinois to Heathrow?

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

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

Yes. Cheapflights offers flight deals from Illinois 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.

£185+ Flights from Illinois to London Heathrow Airport

Cheap flight deals from Illinois to Heathrow

Round-trip from	£477
One-way from	£185

Scandinavian Airlines
24/1-2/2
3 total stops
41h 05m total
Illinois to London

Search Deals

WestJet
27/3
1 total stop
15h 05m total
Illinois to London

Search Deals

Find flight deals from Illinois to Heathrow

Cheapest flights from Illinois to Heathrow
Explore the most affordable flight options available from Illinois to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 December 2024.

Tue 31/1221:10ORD - LHR

Nonstop8h 05mUnited Airlines

Wed 15/108:55LHR - ORD

1 stop13h 20mUnited Airlines

Deal found 29/12£509

Mon 30/1213:50ORD - LHR

1 stop11h 00mKLM

Fri 17/108:40LHR - ORD

1 stop11h 50mKLM

Deal found 29/12£516

Sun 29/1222:00ORD - LHR

Nonstop7h 40mIberia

Wed 29/119:15LHR - ORD

2 stops25h 15mIberia

Deal found 29/12£518

Mon 30/1213:50ORD - LHR

1 stop11h 00mDelta

Tue 28/106:20LHR - ORD

1 stop14h 45mDelta

Deal found 29/12£520

Sun 29/1222:00ORD - LHR

Nonstop7h 40mBritish Airways

Wed 29/111:55LHR - ORD

Nonstop8h 50mBritish Airways

Deal found 29/12£524

Mon 30/1218:25ORD - LHR

Nonstop7h 50mFinnair

Tue 28/108:20LHR - ORD

1 stop17h 00mFinnair

Deal found 29/12£532

Mon 30/1212:35ORD - LHR

1 stop12h 30mAir France

Sat 1/206:20LHR - ORD

1 stop14h 45mAir France

Deal found 29/12£559

Mon 30/1219:05ORD - LHR

1 stop18h 10mSWISS

Sat 18/108:55LHR - ORD

1 stop13h 20mSWISS

Deal found 29/12£569

Mon 30/1216:20ORD - LHR

1 stop12h 05mAustrian Airlines

Mon 20/106:00LHR - ORD

1 stop14h 05mAustrian Airlines

Deal found 29/12£571

Tue 31/1209:50ORD - LHR

1 stop14h 40mAir Canada

Tue 28/108:55LHR - ORD

2 stops15h 55mAir Canada

Deal found 29/12£594

Mon 30/1219:10ORD - LHR

1 stop16h 30mScandinavian Airlines

Fri 10/121:05LHR - ORD

2 stops24h 45mScandinavian Airlines

Deal found 30/12£629

Mon 30/1221:25ORD - LHR

1 stop15h 10mMultiple Airlines

Wed 8/118:40LHR - ORD

1 stop27h 35mMultiple Airlines

Deal found 30/12£700

Best flights from Illinois to Heathrow
Discover carefully curated flight deals from Illinois to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 December 2024.

Fri 24/119:40ORD - LHR

1 stop14h 20mScandinavian Airlines

Sun 2/221:05LHR - ORD

2 stops26h 45mScandinavian Airlines

Deal found 30/12£477

Wed 12/218:30ORD - LHR

1 stop10h 20mIcelandair

Mon 17/220:40LHR - ORD

1 stop26h 40mIcelandair

Deal found 30/12£485

Fri 17/120:20ORD - LHR

1 stop15h 10mTAP AIR PORTUGAL

Thu 23/118:30LHR - ORD

1 stop27h 00mTAP AIR PORTUGAL

Deal found 30/12£488

Tue 22/417:50ORD - LHR

Nonstop7h 30mFinnair

Thu 1/510:20LHR - ORD

1 stop13h 30mFinnair

Deal found 30/12£501

Wed 15/111:35ORD - LHR

1 stop13h 35mMultiple Airlines

Mon 20/120:05LHR - ORD

1 stop26h 10mMultiple Airlines

Deal found 29/12£502

Wed 23/419:15ORD - LHR

Nonstop7h 55mBritish Airways

Wed 30/415:30LHR - ORD

Nonstop8h 45mBritish Airways

Deal found 29/12£511

Fri 7/214:08MDW - LHR

1 stop10h 42mVirgin Atlantic

Mon 10/212:20LHR - MDW

1 stop11h 51mVirgin Atlantic

Deal found 30/12£512

Wed 15/111:35ORD - LHR

1 stop13h 35mUnited Airlines

Tue 21/106:30LHR - ORD

2 stops16h 11mUnited Airlines

Deal found 29/12£513

Mon 13/114:08MDW - LHR

1 stop10h 42mKLM

Tue 21/112:20LHR - MDW

1 stop11h 54mKLM

Deal found 30/12£513

Wed 22/111:35ORD - LHR

1 stop13h 35mAir Canada

Wed 29/106:50LHR - ORD

2 stops13h 55mAir Canada

Deal found 30/12£521

Fri 17/117:05ORD - LHR

1 stop10h 25mJetBlue

Mon 20/107:25LHR - ORD

1 stop14h 19mJetBlue

Deal found 30/12£528

Tue 25/320:05ORD - LHR

1 stop15h 15mSWISS

Mon 31/320:05LHR - ORD

1 stop22h 05mSWISS

Deal found 30/12£530

Direct flights from Illinois to Heathrow
Explore direct flight options from Illinois to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 31 December 2024.

Mon 13/117:00ORD - LHR

Nonstop7h 50mBritish Airways

Tue 21/111:00LHR - ORD

Nonstop8h 55mBritish Airways

Deal found 30/12£505

Wed 5/321:45ORD - LHR

Nonstop7h 45mIberia

Wed 12/311:55LHR - ORD

Nonstop8h 50mIberia

Deal found 31/12£509

Mon 17/221:45ORD - LHR

Nonstop7h 45mFinnair

Wed 5/311:55LHR - ORD

Nonstop8h 50mFinnair

Deal found 30/12£518

Wed 15/122:00ORD - LHR

Nonstop7h 40mAmerican Airlines

Wed 5/211:55LHR - ORD

Nonstop8h 50mAmerican Airlines

Deal found 30/12£530

Wed 16/418:05ORD - LHR

Nonstop8h 15mUnited Airlines

Wed 23/408:30LHR - ORD

Nonstop9h 10mUnited Airlines

Deal found 30/12£534

Mon 21/417:50ORD - LHR

Nonstop7h 30mAlaska Airlines

Thu 1/509:15LHR - ORD

Nonstop8h 35mAlaska Airlines

Deal found 30/12£691

Last-minute flights from Illinois to Heathrow
Discover last-minute flight deals from Illinois to Heathrow. Data last updated 31 December 2024 and is based on user searches.

Mon 30/1213:50ORD - LHR

1 stop11h 00mKLM

Fri 31/108:40LHR - ORD

1 stop11h 50mKLM

Deal found 29/12£516

Tue 31/1221:10ORD - LHR

Nonstop8h 05mUnited Airlines

Thu 30/108:55LHR - ORD

1 stop13h 20mUnited Airlines

Deal found 29/12£509

Mon 6/109:50ORD - LHR

2 stops15h 20mMultiple Airlines

Wed 29/106:00LHR - ORD

2 stops19h 55mMultiple Airlines

Deal found 30/12£511

Mon 6/115:59ORD - LHR

1 stop10h 36mIberia

Tue 14/114:10LHR - ORD

Nonstop8h 50mIberia

Deal found 30/12£535

Mon 6/109:50ORD - LHR

2 stops15h 20mAir Canada

Tue 14/115:00LHR - ORD

1 stop23h 05mAir Canada

Deal found 30/12£536

Tue 7/121:10ORD - LHR

Nonstop8h 05mUnited Airlines

Tue 14/107:30LHR - ORD

2 stops32h 40mUnited Airlines

Deal found 29/12£515

Tue 7/110:19MDW - LHR

1 stop14h 46mDelta

Tue 14/106:30LHR - MDW

2 stops15h 51mDelta

Deal found 29/12£532

Tue 7/113:26MDW - LHR

1 stop11h 39mKLM

Tue 14/114:30LHR - MDW

1 stop13h 50mKLM

Deal found 29/12£543

Wed 8/118:35ORD - LHR

Nonstop7h 40mFinnair

Fri 2/509:30LHR - ORD

1 stop14h 20mFinnair

Deal found 30/12£503

Wed 8/118:30ORD - LHR

1 stop11h 30mBritish Airways

Mon 13/119:00LHR - ORD

2 stops31h 04mBritish Airways

Deal found 31/12£524

Wed 8/110:30ORD - LHR

1 stop14h 20mDelta

Wed 15/106:30LHR - ORD

2 stops17h 06mDelta

Deal found 30/12£532

Fri 10/119:10ORD - LHR

1 stop14h 50mScandinavian Airlines

Sun 12/119:30LHR - ORD

1 stop26h 20mScandinavian Airlines

Deal found 30/12£482

One-way flights from Illinois to Heathrow
Search for one-way flight options from Illinois to Heathrow. Find affordable one-way fares based on user searches. Data last updated 31 December 2024.

Thu 27/316:45ORD - LHR

1 stop15h 05mWestJet

Deal found 30/12£185

Mon 3/205:50ORD - LHR

2 stops26h 35mMultiple Airlines

Deal found 30/12£192

Mon 13/115:57MDW - LHR

3 stops40h 28mMultiple Airlines

Deal found 30/12£198

Sun 2/217:05ORD - LHR

1 stop10h 25mJetBlue

Deal found 30/12£201

Mon 13/118:30ORD - LHR

1 stop10h 20mIcelandair

Deal found 31/12£216

Fri 24/119:09STL - LHR

3 stops35h 41mMultiple Airlines

Deal found 30/12£262

Tue 15/414:20ORD - LHR

1 stop11h 35mSWISS

Deal found 30/12£269

Wed 2/418:00ORD - LHR

1 stop12h 45mTAP AIR PORTUGAL

Deal found 30/12£276

Mon 31/319:15ORD - LHR

1 stop16h 25mScandinavian Airlines

Deal found 30/12£288

Mon 10/322:45ORD - LHR

Nonstop7h 45mIberia

Deal found 30/12£316

Sun 30/313:16MDW - LHR

1 stop16h 59mVirgin Atlantic

Deal found 30/12£319

Mon 3/321:45ORD - LHR

Nonstop7h 45mBritish Airways

Deal found 31/12£322

Find flights from Illinois to Heathrow within your budget

Fly from

Fly to

Route

Depart

Return

Price

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Fri 24/1

19:40-16:00

1 stop14h 20m

London Heathrow

Sun 2/2

21:05-17:50

2 stops26h 45m

£477

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 12/2

18:30-10:50

1 stop10h 20m

London Heathrow

Mon 17/2

20:40-17:20

1 stop26h 40m

£485

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Fri 17/1

20:20-17:30

1 stop15h 10m

London Heathrow

Wed 22/1

06:00-15:30

1 stop15h 30m

£488

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 22/4

17:50-07:20

Nonstop7h 30m

London Heathrow

Thu 1/5

10:20-17:50

1 stop13h 30m

£501

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 15/1

11:35-07:10

1 stop13h 35m

London Heathrow

Mon 20/1

20:05-16:15

1 stop26h 10m

£502

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 23/4

19:15-09:10

Nonstop7h 55m

London Heathrow

Wed 30/4

15:30-18:15

Nonstop8h 45m

£511

ChicagoLondon

MDW - LHR

MDWLHR

Chicago Midway

Fri 7/2

14:08-06:50

1 stop10h 42m

London Heathrow

Mon 10/2

12:20-18:11

1 stop11h 51m

£512

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 15/1

11:35-07:10

1 stop13h 35m

London Heathrow

Tue 21/1

06:30-16:41

2 stops16h 11m

£513

ChicagoLondon

MDW - LHR

MDWLHR

Chicago Midway

Mon 13/1

14:08-06:50

1 stop10h 42m

London Heathrow

Tue 21/1

12:20-18:14

1 stop11h 54m

£513

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 22/1

13:55-11:50

2 stops15h 55m

London Heathrow

Wed 29/1

06:50-14:45

2 stops13h 55m

£525

Flights are sorted by cheapest return flights first.

Deals found on 30/12

Showing 1-10 of 60 results

...

Best time to book a flight from Illinois to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Illinois with our price prediction graph.

Estimated return 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.

Travel insights for flights from Illinois to Heathrow

Get recent, data-driven insights about flights from Illinois to Heathrow including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from Illinois to London Heathrow Airport (average of £112). Flying from Illinois to London Heathrow Airport in July is currently the most expensive (average of £160). 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 IL to LHR?

When flying from Illinois to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Illinois to London Heathrow Airport

The most flights from USIL to LHR are scheduled on a Monday (40 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (40 on average).

Rainfall in Heathrow by month

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Heathrow

To help decide which airline to fly from Illinois to London, see what other customers have to say about British Airways, Virgin Atlantic and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

8,540 reviews

Check prices

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very Good

8,540 reviews

Delta

8.0

Very Good

8,540 reviews

Check prices

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,342 reviews

Delta

8.0

Very Good

8,540 reviews

Check prices

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair

7.7

Good

1,282 reviews

Delta

8.0

Very Good

8,540 reviews

Check prices

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Austrian Airlines

7.6

Good

788 reviews

Delta

8.0

Very Good

8,540 reviews

Check prices

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS

7.5

Good

1,595 reviews

Delta

8.0

Very Good

8,540 reviews

Check prices

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What are the cheapest airlines to fly from Illinois to London Heathrow Airport one-way?
The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as £185. However, be on the lookout for offers from JetBlue and Icelandair, as they are both options that can get you from Illinois to London Heathrow Airport for a low price.
What are the most popular routes from Illinois to London Heathrow Airport?
The most popular route from Illinois to London Heathrow Airport is Chicago O'Hare Intl - London Heathrow. You may also consider Chicago Midway - London Heathrow or Lambert-St Louis - London Heathrow.
What are the most reliable airlines from Illinois to London Heathrow Airport?
No one likes to see their flight delayed. When booking a flight from Illinois to London Heathrow Airport consider choosing Lufthansa (82%), Air Canada (77%) or Austrian Airlines (77%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from Illinois to London Heathrow Airport?
On average you can expect to pay £3,359 for a flight from Illinois to London Heathrow Airport. The cheapest flight overall is £297 while the most popular route, (Chicago O'Hare Intl - London Heathrow) is currently priced at £382.
Can I find deals for flights from Illinois to Heathrow that include hotel bookings?
Yes. In addition to deals on Illinois to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Illinois to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Heathrow.
Can I find deals for business class flights from Illinois to Heathrow?
Yes. Cheapflights offers flight deals from Illinois 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 Illinois to London Heathrow Airport?
Currently, January is the cheapest month in which you can book a flight from Illinois to London Heathrow Airport (average of £112). Flying from Illinois to London Heathrow Airport in July is currently the most expensive (average of £160). 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

Browse thousands of different options on Cheapflights for your next trip

Top 7 airlines flying from Illinois to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
Lufthansa	Cheapest£324	Average£862	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Finnair	Cheapest£380	Average£737	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
American Airlines	Cheapest£408	Average£799	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Aer Lingus	Cheapest£473	Average£690	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
British Airways	Cheapest£496	Average£685	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Iberia	Cheapest£524	Average£699	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
United Airlines	Cheapest£538	Average£729	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

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How does Cheapflights help users find flights from Illinois to Heathrow?

When you search for this flight from Illinois to Heathrow, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Illinois to Heathrow?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Heathrow from Illinois.

Can Cheapflights find flights from Illinois to Heathrow with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Illinois to Heathrow, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Illinois to Heathrow become cheaper?

Yes, Cheapflights offers price alerts on Illinois to Heathrow flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from Illinois to London Heathrow Airport from £185

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 27/3. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Illinois to Heathrow

Round-trip from

One-way from

Find flight deals from Illinois to Heathrow

Cheapest flights from Illinois to HeathrowExplore the most affordable flight options available from Illinois to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 December 2024.

Explore the most affordable flight options available from Illinois to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 December 2024.

Find flights from Illinois to Heathrow within your budget

Best time to book a flight from Illinois to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Illinois with our price prediction graph.

Travel insights for flights from Illinois to Heathrow

Get recent, data-driven insights about flights from Illinois to Heathrow including ideal travel times, pricing trends, and more.

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

What is the cheapest time of day to fly from IL to LHR?

Find hourly flight availability from Illinois 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 31 December 2024.

Weekly flight availability from Illinois to London Heathrow Airport

Explore weekly flight availability from Illinois 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 31 December 2024.

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

Reviews of airlines servicing Heathrow

To help decide which airline to fly from Illinois to London, see what other customers have to say about British Airways, Virgin Atlantic and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Illinois 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 to fly from Illinois to London Heathrow Airport one-way?

What are the most popular routes from Illinois to London Heathrow Airport?

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

What are the cheapest flights from Illinois to London Heathrow Airport?

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

How can I find direct flights from Illinois to Heathrow?

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

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

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 Illinois to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.

Top 7 airlines flying from Illinois to Heathrow

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Illinois to Heathrow?

Why should you use Cheapflights to find cheap flight tickets from Illinois to Heathrow?

Can Cheapflights find flights from Illinois to Heathrow with no change fees?

Can Cheapflights notify me if prices for flights from Illinois to Heathrow become cheaper?

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Cheapest flights from Illinois to Heathrow
Explore the most affordable flight options available from Illinois to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 December 2024.