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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 1/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
ORD — LHR
9 May — 16 May1
1 adult
Thu 9/5
Thu 16/5

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 11 days before your planned departure. Booking around this time can save you about 12% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £450 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £511.

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 £605 per person but you can even find prices for as low as £326. The most expensive prices can be found in the month of June. Opting for a February flight can save you 62% on your journey compared to booking in June

When is the cheapest time to fly from Illinois to London Heathrow Airport (IL - 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.

Cheap Icelandair flights from Illinois to Heathrow

Explore cheap flight options specifically provided by Icelandair for the route between Illinois and Heathrow. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 892,239 searches. Data last updated 4 May 2024.
Peruse some of the lowest-priced Icelandair flights we've found from Illinois to London. Come back soon if you're not finding the exact deal you're looking for.
Mon 19/822:15ORD - LHR
1 stop16h 05mIcelandair
Sun 25/821:25LHR - ORD
1 stop26h 50mIcelandair
Deal found 4/5£421
Sun 1/922:15ORD - LHR
1 stop31h 40mIcelandair
Tue 10/913:05LHR - ORD
1 stop11h 10mIcelandair
Deal found 4/5£433
Mon 19/822:15ORD - LHR
1 stop16h 05mIcelandair
Sun 25/821:25LHR - ORD
1 stop26h 50mIcelandair
Deal found 3/5£434
Mon 19/819:25ORD - LHR
1 stop18h 55mIcelandair
Fri 23/821:25LHR - ORD
1 stop29h 50mIcelandair
Deal found 3/5£438
Mon 26/822:15ORD - LHR
1 stop16h 05mIcelandair
Mon 16/921:25LHR - ORD
1 stop26h 50mIcelandair
Deal found 3/5£440
Mon 19/822:15ORD - LHR
1 stop16h 05mIcelandair
Mon 26/813:05LHR - ORD
1 stop11h 10mIcelandair
Deal found 3/5£448
Tue 8/1019:30ORD - LHR
1 stop18h 50mIcelandair
Wed 23/1013:05LHR - ORD
1 stop11h 15mIcelandair
Deal found 4/5£448
Sun 15/919:30ORD - LHR
1 stop10h 25mIcelandair
Mon 30/921:25LHR - ORD
1 stop26h 50mIcelandair
Deal found 4/5£449
Mon 19/819:25ORD - LHR
1 stop18h 55mIcelandair
Mon 9/921:25LHR - ORD
1 stop26h 50mIcelandair
Deal found 3/5£450

Cheap Scandinavian Airlines flights from Illinois to Heathrow

Explore cheap flight options specifically provided by Scandinavian Airlines for the route between Illinois and Heathrow. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 892,239 searches. Data last updated 4 May 2024.
Some of the lowest-priced Scandinavian Airlines flights we've found at this time heading from Illinois to London. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.
Fri 18/1019:45ORD - LHR
2 stops31h 50mScandinavian Airlines
Mon 21/1006:40LHR - ORD
1 stop17h 15mScandinavian Airlines
Deal found 4/5£437
Mon 21/1019:45ORD - LHR
1 stop15h 55mScandinavian Airlines
Mon 28/1019:30LHR - ORD
2 stops28h 35mScandinavian Airlines
Deal found 3/5£442
Mon 21/1019:45ORD - LHR
1 stop14h 15mScandinavian Airlines
Mon 28/1019:30LHR - ORD
2 stops28h 35mScandinavian Airlines
Deal found 4/5£443
Fri 11/1019:45ORD - LHR
1 stop11h 50mScandinavian Airlines
Sun 13/1010:35LHR - ORD
2 stops37h 20mScandinavian Airlines
Deal found 3/5£446
Fri 18/1019:45ORD - LHR
2 stops31h 50mScandinavian Airlines
Mon 21/1006:40LHR - ORD
2 stops17h 15mScandinavian Airlines
Deal found 4/5£461
Sun 20/1019:45ORD - LHR
1 stop17h 45mScandinavian Airlines
Wed 30/1007:05LHR - ORD
2 stops17h 00mScandinavian Airlines
Deal found 3/5£464
Wed 2/1019:45ORD - LHR
2 stops16h 45mScandinavian Airlines
Tue 22/1019:30LHR - ORD
2 stops28h 25mScandinavian Airlines
Deal found 3/5£465
Wed 2/1019:45ORD - LHR
1 stop15h 55mScandinavian Airlines
Mon 28/1019:30LHR - ORD
2 stops28h 35mScandinavian Airlines
Deal found 3/5£466
Wed 2/1019:45ORD - LHR
2 stops19h 35mScandinavian Airlines
Tue 22/1019:30LHR - ORD
2 stops28h 25mScandinavian Airlines
Deal found 3/5£468

Cheap Illinois to Heathrow flights in May & June 2024

Find cheap flight options from Illinois to Heathrow specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 892,239 searches. Prices were last updated on 4 May 2024.
Scroll through some of the best deals on flights from Illinois to London in 2024. More deals are always being added, so be sure to check back regularly.
Tue 7/519:15ORD - LHR
1 stop11h 45mSWISS
Wed 15/508:40LHR - ORD
1 stop13h 25mSWISS
Deal found 4/5£489
Wed 8/519:15ORD - LHR
1 stop18h 10mSWISS
Wed 15/508:40LHR - ORD
1 stop13h 25mSWISS
Deal found 4/5£491
Fri 3/518:50ORD - LHR
Nonstop8h 10mUnited Airlines
Sun 5/506:50LHR - ORD
1 stop11h 10mUnited Airlines
Deal found 3/5£495
Wed 8/519:15ORD - LHR
1 stop18h 10mSWISS
Tue 18/606:00LHR - ORD
1 stop12h 10mSWISS
Deal found 4/5£496
Mon 6/520:55ORD - LHR
1 stop11h 00mAer Lingus
Wed 8/508:50LHR - ORD
1 stop11h 10mAer Lingus
Deal found 2/5£499
Sun 5/521:35ORD - LHR
Nonstop8h 10mLufthansa
Tue 14/508:30LHR - ORD
Nonstop8h 50mLufthansa
Deal found 4/5£499
Tue 7/523:00ORD - LHR
Nonstop7h 45mIberia
Tue 14/506:15LHR - ORD
1 stop14h 05mIberia
Deal found 3/5£500
Wed 8/518:20ORD - LHR
Nonstop8h 10mUnited Airlines
Wed 22/508:40LHR - ORD
1 stop13h 25mUnited Airlines
Deal found 4/5£501
Wed 8/521:35ORD - LHR
Nonstop8h 10mUnited Airlines
Wed 15/508:40LHR - ORD
1 stop13h 25mUnited Airlines
Deal found 4/5£502

Illinois to Heathrow 2024 flight deals

Discover exclusive flight deals for travel between Illinois and Heathrow in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 892,239 searches. Data last updated 4 May 2024.
Scroll through some of the best deals on flights from Illinois to London in 2024. More deals are always being added, so be sure to check back regularly.
Sat 26/1019:45ORD - LHR
1 stop18h 45mScandinavian Airlines
Mon 28/1019:30LHR - ORD
2 stops28h 35mScandinavian Airlines
Deal found 4/5£413
Mon 19/822:15ORD - LHR
1 stop16h 05mIcelandair
Sun 25/821:25LHR - ORD
1 stop26h 50mIcelandair
Deal found 4/5£421
Fri 8/1119:55ORD - LHR
2 stops43h 40mScandinavian Airlines
Mon 11/1120:30LHR - ORD
1 stop27h 35mScandinavian Airlines
Deal found 3/5£427
Wed 13/1119:55ORD - LHR
1 stop19h 45mScandinavian Airlines
Wed 20/1106:40LHR - ORD
1 stop17h 25mScandinavian Airlines
Deal found 4/5£429
Mon 19/819:25ORD - LHR
1 stop18h 55mIcelandair
Fri 23/821:25LHR - ORD
1 stop29h 50mIcelandair
Deal found 4/5£430
Tue 3/919:25ORD - LHR
1 stop18h 55mIcelandair
Tue 1/1013:05LHR - ORD
1 stop14h 10mIcelandair
Deal found 4/5£431
Mon 19/822:15ORD - LHR
1 stop16h 05mIcelandair
Sun 25/821:25LHR - ORD
1 stop26h 50mIcelandair
Deal found 3/5£434
Fri 13/919:25ORD - LHR
1 stop10h 30mIcelandair
Fri 20/913:05LHR - ORD
1 stop14h 10mIcelandair
Deal found 4/5£435
Tue 3/919:25ORD - LHR
1 stop18h 55mIcelandair
Tue 17/913:05LHR - ORD
1 stop11h 10mIcelandair
Deal found 4/5£437

Direct flights to Heathrow from Illinois

Discover direct flight options from Illinois to Heathrow. Find direct flights with no stopovers, providing a convenient travel experience. Explore direct flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 892,239 searches. Data last updated 4 May 2024.
Take a look at some of the direct flights travelling from Illinois to London in the near future. Those looking to potentially save on 1 or 2-stop flights from Illinois to London should utilise the search form at the top of the page.
Sun 20/1019:10ORD - LHR
Nonstop7h 50mBritish Airways
Wed 30/1011:00LHR - ORD
Nonstop8h 55mBritish Airways
Deal found 4/5£488
Tue 15/1020:25ORD - LHR
Nonstop7h 55mBritish Airways
Tue 22/1012:15LHR - ORD
Nonstop8h 55mBritish Airways
Deal found 4/5£503
Tue 1/1020:25ORD - LHR
Nonstop7h 55mFinnair
Wed 9/1012:15LHR - ORD
Nonstop8h 55mFinnair
Deal found 3/5£505
Sun 1/908:35ORD - LHR
Nonstop7h 35mBritish Airways
Tue 10/911:05LHR - ORD
Nonstop8h 40mBritish Airways
Deal found 4/5£513
Mon 19/808:35ORD - LHR
Nonstop7h 35mBritish Airways
Wed 28/808:10LHR - ORD
Nonstop8h 35mBritish Airways
Deal found 3/5£514
Tue 21/519:15ORD - LHR
Nonstop7h 50mBritish Airways
Fri 31/512:15LHR - ORD
Nonstop8h 40mBritish Airways
Deal found 3/5£522
Tue 22/1019:15ORD - LHR
Nonstop7h 50mBritish Airways
Sat 2/1115:45LHR - ORD
Nonstop9h 00mBritish Airways
Deal found 4/5£525
Mon 19/818:15ORD - LHR
Nonstop7h 35mBritish Airways
Fri 30/808:10LHR - ORD
Nonstop8h 35mBritish Airways
Deal found 3/5£536
Tue 13/808:35ORD - LHR
Nonstop7h 35mBritish Airways
Wed 21/811:05LHR - ORD
Nonstop8h 40mBritish Airways
Deal found 4/5£542

Illinois to Heathrow flights leaving soon

Find last-minute flight options from Illinois to Heathrow for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 892,239 searches. Data last updated 4 May 2024.
Have a look at some of the last-minute flights available departing from Illinois to London. Users should be sure to double check the price, date, and time of their last-minute flight.
Mon 13/508:20ORD - LHR
Nonstop7h 50mIberia
Wed 22/506:15LHR - ORD
1 stop14h 05mIberia
Deal found 3/5£500
Mon 13/515:45ORD - LHR
Nonstop8h 10mUnited Airlines
Mon 18/1113:45LHR - ORD
1 stop32h 25mUnited Airlines
Deal found 4/5£501
Mon 13/513:59ORD - LHR
1 stop11h 46mIberia
Wed 22/506:15LHR - ORD
1 stop14h 05mIberia
Deal found 3/5£503
Mon 13/512:47ORD - LHR
1 stop16h 48mUnited Airlines
Tue 26/1113:45LHR - ORD
1 stop32h 25mUnited Airlines
Deal found 4/5£504
Mon 13/508:20ORD - LHR
Nonstop7h 50mAmerican Airlines
Wed 29/506:10LHR - ORD
1 stop13h 35mAmerican Airlines
Deal found 3/5£506
Mon 13/515:20ORD - LHR
1 stop11h 45mAmerican Airlines
Wed 29/506:10LHR - ORD
1 stop13h 35mAmerican Airlines
Deal found 3/5£508
Tue 14/508:45ORD - LHR
1 stop15h 45mUnited Airlines
Fri 31/508:40LHR - ORD
1 stop13h 15mUnited Airlines
Deal found 4/5£509
Tue 14/515:27ORD - LHR
1 stop12h 03mAmerican Airlines
Fri 31/506:15LHR - ORD
1 stop13h 30mAmerican Airlines
Deal found 3/5£510
Sun 12/507:30ORD - LHR
1 stop22h 05mUnited Airlines
Wed 22/506:50LHR - ORD
1 stop11h 10mUnited Airlines
Deal found 4/5£511

One-way flights to Heathrow from Illinois

Search for one-way flight options from Illinois to Heathrow. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 892,239 searches. Data last updated 4 May 2024.
Some of the best available deals we've found on one-way flights from Illinois to London. Users in need of a round-trip flight from Illinois to London instead should update the search form at the top of page.
Tue 1/1019:25ORD - LHR
1 stop10h 30mIcelandair
Deal found 2/5£185
Tue 8/1019:30ORD - LHR
1 stop10h 25mIcelandair
Deal found 4/5£189
Sun 6/1019:30ORD - LHR
1 stop10h 25mIcelandair
Deal found 4/5£190
Mon 23/919:30ORD - LHR
1 stop18h 50mIcelandair
Deal found 3/5£202
Sun 22/919:30ORD - LHR
1 stop10h 25mIcelandair
Deal found 4/5£227
Sat 5/1019:25ORD - LHR
1 stop10h 30mIcelandair
Deal found 3/5£229
Mon 15/719:25ORD - LHR
1 stop18h 55mIcelandair
Deal found 3/5£230
Tue 13/819:25ORD - LHR
1 stop10h 30mIcelandair
Deal found 3/5£231
Thu 17/1019:30ORD - LHR
1 stop10h 25mIcelandair
Deal found 3/5£232

Find flights from Illinois to Heathrow within your budget

Customise your flight search to find flights from Illinois 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 892,239 searches. Data last updated 4 May 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£421 - £506

Route

Depart

Return

Price

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 19/8

1 stop16h 05m

London Heathrow

Sun 25/8

1 stop26h 50m

£421

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Fri 18/10

2 stops31h 50m

London Heathrow

Mon 21/10

1 stop17h 15m

£437

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 21/10

1 stop12h 45m

London Heathrow

Tue 29/10

1 stop27h 00m

£441

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 9/10

Nonstop7h 50m

London Heathrow

Wed 23/10

1 stop13h 35m

£489

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 2/10

Nonstop8h 15m

London Heathrow

Tue 15/10

1 stop12h 50m

£494

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Fri 23/8

1 stop12h 00m

London Heathrow

Fri 6/9

1 stop13h 15m

£495

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Tue 8/10

2 stops30h 20m

London Heathrow

Tue 22/10

2 stops22h 55m

£503

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 2/10

Nonstop7h 50m

London Heathrow

Tue 15/10

Nonstop8h 55m

£505

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 21/5

Nonstop7h 45m

London Heathrow

Wed 5/6

1 stop13h 35m

£506

Flights are sorted by cheapest first

Deals found on 4/5

No data available for this route at this time. Please check back soon.

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 4 May 2024.
To help decide which airline to fly from Illinois to London, see what other customers have to say about Icelandair, Scandinavian Airlines and TAP AIR PORTUGAL. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.1
Very Good
10,838 reviews
Check prices

Entertainment

8.0

Comfort

7.9

Overall

8.1

Crew

8.6

Boarding

8.2

Food

7.4

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Delta
8.1
Very Good
10,838 reviews
Delta
8.1
Very Good
10,838 reviews
Check prices

Entertainment

8.0

Comfort

7.9

Overall

8.1

Crew

8.6

Boarding

8.2

Food

7.4

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

KLM
7.9
Good
1,604 reviews
Delta
8.1
Very Good
10,838 reviews
Check prices

Entertainment

8.0

Comfort

7.9

Overall

8.1

Crew

8.6

Boarding

8.2

Food

7.4

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

SWISS
7.8
Good
2,019 reviews
Delta
8.1
Very Good
10,838 reviews
Check prices

Entertainment

8.0

Comfort

7.9

Overall

8.1

Crew

8.6

Boarding

8.2

Food

7.4

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Finnair
7.8
Good
1,379 reviews
Delta
8.1
Very Good
10,838 reviews
Check prices

Entertainment

8.0

Comfort

7.9

Overall

8.1

Crew

8.6

Boarding

8.2

Food

7.4

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Virgin Atlantic
7.7
Good
742 reviews
Delta
8.1
Very Good
10,838 reviews
Check prices

Entertainment

8.0

Comfort

7.9

Overall

8.1

Crew

8.6

Boarding

8.2

Food

7.4

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

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.

  • Can I find flights from Illinois to London Heathrow Airport for under £500 on Cheapflights?

    Yes, there are multiple flights from Illinois to London Heathrow Airport for under £500. The cheapest flight booked recently is on Icelandair for just £421, but on average you can expect to pay £443.

  • Are there nonstop flights from Illinois to London Heathrow Airport for under £500 on Cheapflights?

    Cheapflights has at least 20 direct flights from Illinois to London Heathrow Airport under £500. A good price for a nonstop flight from Illinois to London Heathrow Airport is less than £540.

  • Are there last-minute flights available from Illinois to London Heathrow Airport for under £500?

    There are currently 20+ open flights from Illinois to London Heathrow Airport within the next 7 days for less than £500.

  • What days are direct flights available from Illinois to London Heathrow Airport?

    Direct flights can be found on the following days: Monday, Wednesday, Thursday, Saturday.

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

    14 flight departures from Illinois to London Heathrow Airport per day on average.
    Afternoon (Midday - 6pm) - 21% of flight departures
    Evening (6pm - Midnight) - 79% of flight departures

  • How long is the flight from Illinois to London Heathrow Airport?

    For as low as £421, Icelandair can have you in London Heathrow Airport from Illinois in 12h 45m. The distance from Illinois to London Heathrow Airport is about 3964 mi. This flight may include one or multiple stops.

  • 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 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.

  • 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 EL AL (91%), Qatar Airways (78%) or Aer Lingus (78%) 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 £1,000 for a flight from Illinois to London Heathrow Airport. The cheapest flight overall is £346 while the most popular route, (Chicago O'Hare Intl - London Heathrow) is currently priced at £427.

  • What does ORD to LHR mean?

    Great question - ORD to LHR just means Chicago O'Hare Intl Airport to London Heathrow Airport. Now you’ll know what these unique codes when you look for flights! Chicago Midway Airport (MDW), Moline Quad-City Airport (MLI), Greater Peoria Airport (PIA), Bloomington-Normal Airport (BMI), Springfield Capital Airport (SPI) are other airports near this flight route and their unique identifiers/IATA codes.

  • Can I find deals for flights from Illinois to Heathrow that include extra baggage allowance?

    The amount of baggage you can bring on your Illinois to Heathrow flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Illinois to Heathrow with specific airlines?

    Yes, Cheapflights allows you to browse and filter Illinois to Heathrow flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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.

  • Can I find deals for flights from Illinois to Heathrow that allow pets onboard?

    Many airlines flying from Illinois to Heathrow offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Illinois to Heathrow?

    Yes, you can often find last-minute deals on Illinois to Heathrow flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Illinois to London Heathrow Airport flight deals updated?

    The Illinois to London Heathrow Airport flight deals you see on this page were last updated on 4/5.

See more FAQs

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Top 10 airlines flying from Illinois to Heathrow

Discover the top 10 airlines that operate flights from Illinois 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 892,239 searches. Data last updated 4 May 2024.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest£350Average£407FlexibilityNo cancel feeOn-time77%
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LufthansaCheapest£384Average£627FlexibilityNo cancel feeOn-time76%
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United AirlinesCheapest£406Average£711FlexibilityNo cancel feeOn-time69%
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Virgin AtlanticCheapest£409Average£429FlexibilityNo cancel feeOn-time72%
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Aer LingusCheapest£473Average£688FlexibilityNo cancel feeOn-timeN/A
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IberiaCheapest£500Average£663FlexibilityNo cancel feeOn-time77%
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British AirwaysCheapest£501Average£704FlexibilityNo cancel feeOn-time70%
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TAP AIR PORTUGALCheapest£536Average£703FlexibilityNo cancel feeOn-timeN/A
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American AirlinesCheapest£544Average£739FlexibilityNo cancel feeOn-time71%
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FinnairCheapest£628Average£785FlexibilityNo cancel feeOn-time76%
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Search flights from Illinois to Heathrow by cabin class

Find flights from Illinois to Heathrow, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Hourly flight availability from Illinois to Heathrow

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 4 May 2024.
1%of flight departuresEarly morningMidnight to 6 am
10%of flight departuresMorning6 am to noon
49%of flight departuresAfternoonNoon to 6 pm
40%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Midday
6 PM

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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?

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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