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Cheap flights from Illinois to London Heathrow Airport from £186

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 4/11. 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
25 May — 1 Jun1
1 adult
Sat 25/5
Sat 1/6

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 3% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £509 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £524.

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 £608 per person but you can even find prices for as low as £342. The most expensive prices can be found in the month of June. Opting for a February flight can save you 58% 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 TAP AIR PORTUGAL flights from Illinois to Heathrow

Explore cheap flight options specifically provided by TAP AIR PORTUGAL 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 835,519 searches. Data last updated 20 May 2024.
Peruse some of the lowest-priced TAP AIR PORTUGAL flights we've found from Illinois to London. Come back soon if you're not finding the exact deal you're looking for.
Wed 13/1119:15ORD - LHR
1 stop14h 15mTAP AIR PORTUGAL
Thu 21/1119:55LHR - ORD
1 stop25h 35mTAP AIR PORTUGAL
Deal found 19/5£387
Fri 25/1018:00ORD - LHR
1 stop12h 45mTAP AIR PORTUGAL
Sun 3/1105:00LHR - ORD
1 stop15h 30mTAP AIR PORTUGAL
Deal found 19/5£390
Fri 18/1018:00ORD - LHR
1 stop12h 45mTAP AIR PORTUGAL
Sat 26/1019:50LHR - ORD
1 stop26h 40mTAP AIR PORTUGAL
Deal found 18/5£390
Sun 10/1120:25ORD - LHR
1 stop15h 05mTAP AIR PORTUGAL
Tue 19/1113:40LHR - ORD
1 stop31h 50mTAP AIR PORTUGAL
Deal found 19/5£394
Mon 23/918:00ORD - LHR
1 stop12h 45mTAP AIR PORTUGAL
Tue 15/1018:45LHR - ORD
1 stop27h 25mTAP AIR PORTUGAL
Deal found 19/5£398
Sun 10/1120:25ORD - LHR
1 stop15h 05mTAP AIR PORTUGAL
Sun 17/1106:00LHR - ORD
1 stop15h 30mTAP AIR PORTUGAL
Deal found 19/5£401
Wed 13/1119:15ORD - LHR
1 stop21h 25mTAP AIR PORTUGAL
Wed 20/1106:00LHR - ORD
1 stop15h 30mTAP AIR PORTUGAL
Deal found 19/5£404
Mon 23/918:00ORD - LHR
1 stop22h 55mTAP AIR PORTUGAL
Mon 7/1008:00LHR - ORD
1 stop14h 15mTAP AIR PORTUGAL
Deal found 19/5£407
Fri 1/1121:25ORD - LHR
1 stop19h 10mTAP AIR PORTUGAL
Wed 20/1106:00LHR - ORD
1 stop15h 30mTAP AIR PORTUGAL
Deal found 19/5£410

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 835,519 searches. Data last updated 20 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 8/1120:10ORD - LHR
2 stops31h 25mScandinavian Airlines
Mon 11/1106:40LHR - ORD
1 stop17h 25mScandinavian Airlines
Deal found 20/5£409
Fri 8/1120:10ORD - LHR
2 stops31h 25mScandinavian Airlines
Mon 11/1106:40LHR - ORD
2 stops17h 25mScandinavian Airlines
Deal found 20/5£434
Mon 21/1019:45ORD - LHR
2 stops19h 50mScandinavian Airlines
Mon 28/1007:05LHR - ORD
2 stops17h 00mScandinavian Airlines
Deal found 19/5£438
Mon 21/1019:45ORD - LHR
1 stop14h 15mScandinavian Airlines
Sun 27/1020:30LHR - ORD
1 stop27h 35mScandinavian Airlines
Deal found 19/5£439
Sun 10/1120:10ORD - LHR
2 stops16h 20mScandinavian Airlines
Sun 24/1121:05LHR - ORD
2 stops27h 00mScandinavian Airlines
Deal found 19/5£441
Sun 10/1120:10ORD - LHR
1 stop17h 20mScandinavian Airlines
Sun 24/1121:05LHR - ORD
2 stops27h 00mScandinavian Airlines
Deal found 19/5£442
Sun 10/1120:10ORD - LHR
1 stop15h 30mScandinavian Airlines
Mon 18/1106:40LHR - ORD
1 stop17h 25mScandinavian Airlines
Deal found 20/5£452
Sat 25/519:45ORD - LHR
1 stop17h 45mScandinavian Airlines
Tue 28/507:05LHR - ORD
2 stops16h 50mScandinavian Airlines
Deal found 19/5£821

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 835,519 searches. Prices were last updated on 20 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 29/619:25ORD - LHR
1 stop18h 55mIcelandair
Fri 23/821:25LHR - ORD
1 stop29h 50mIcelandair
Deal found 19/5£483
Mon 20/518:20ORD - LHR
Nonstop8h 10mUnited Airlines
Fri 31/508:40LHR - ORD
1 stop13h 15mUnited Airlines
Deal found 20/5£505
Sun 19/510:45ORD - LHR
1 stop14h 55mUnited Airlines
Tue 28/512:05LHR - ORD
1 stop30h 05mUnited Airlines
Deal found 19/5£505
Mon 20/514:20ORD - LHR
1 stop15h 15mUnited Airlines
Fri 31/508:40LHR - ORD
1 stop13h 15mUnited Airlines
Deal found 20/5£508
Tue 21/510:55ORD - LHR
1 stop13h 35mAir Canada
Wed 5/606:50LHR - ORD
2 stops13h 46mAir Canada
Deal found 19/5£510
Tue 21/514:09ORD - LHR
1 stop11h 06mUnited Airlines
Fri 31/506:50LHR - ORD
1 stop11h 10mUnited Airlines
Deal found 19/5£514
Mon 20/521:25ORD - LHR
1 stop12h 20mLufthansa
Wed 5/609:00LHR - ORD
1 stop15h 15mLufthansa
Deal found 19/5£515
Mon 20/507:10ORD - LHR
1 stop17h 10mDelta
Wed 5/606:15LHR - ORD
1 stop14h 45mDelta
Deal found 19/5£516
Tue 21/508:20ORD - LHR
Nonstop7h 50mFinnair
Fri 7/608:10LHR - ORD
Nonstop8h 35mFinnair
Deal found 20/5£517

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 835,519 searches. Data last updated 20 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.
Wed 6/1119:15ORD - LHR
1 stop20h 20mTAP AIR PORTUGAL
Fri 15/1106:00LHR - ORD
1 stop15h 30mTAP AIR PORTUGAL
Deal found 19/5£387
Fri 25/1018:00ORD - LHR
1 stop12h 45mTAP AIR PORTUGAL
Sun 3/1105:00LHR - ORD
1 stop15h 30mTAP AIR PORTUGAL
Deal found 19/5£390
Fri 18/1018:00ORD - LHR
1 stop12h 45mTAP AIR PORTUGAL
Sat 26/1019:50LHR - ORD
1 stop26h 40mTAP AIR PORTUGAL
Deal found 18/5£390
Sun 10/1120:25ORD - LHR
1 stop15h 05mTAP AIR PORTUGAL
Tue 19/1113:40LHR - ORD
1 stop31h 50mTAP AIR PORTUGAL
Deal found 19/5£394
Mon 23/918:00ORD - LHR
1 stop12h 45mTAP AIR PORTUGAL
Tue 15/1018:45LHR - ORD
1 stop27h 25mTAP AIR PORTUGAL
Deal found 19/5£398
Sun 10/1120:25ORD - LHR
1 stop15h 05mTAP AIR PORTUGAL
Sun 17/1106:00LHR - ORD
1 stop15h 30mTAP AIR PORTUGAL
Deal found 19/5£401
Wed 13/1119:15ORD - LHR
1 stop21h 25mTAP AIR PORTUGAL
Wed 20/1106:00LHR - ORD
1 stop15h 30mTAP AIR PORTUGAL
Deal found 19/5£404
Mon 23/918:00ORD - LHR
1 stop22h 55mTAP AIR PORTUGAL
Mon 7/1008:00LHR - ORD
1 stop14h 15mTAP AIR PORTUGAL
Deal found 19/5£407
Fri 25/1019:45ORD - LHR
2 stops32h 50mScandinavian Airlines
Mon 28/1006:40LHR - ORD
1 stop17h 25mScandinavian Airlines
Deal found 20/5£409

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 835,519 searches. Data last updated 20 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.
Tue 24/919:15ORD - LHR
Nonstop7h 50mBritish Airways
Thu 17/1008:10LHR - ORD
Nonstop8h 35mBritish Airways
Deal found 19/5£469
Sun 22/916:45ORD - LHR
Nonstop7h 50mBritish Airways
Wed 16/1011:05LHR - ORD
Nonstop8h 40mBritish Airways
Deal found 19/5£476
Wed 9/1021:25ORD - LHR
Nonstop7h 50mBritish Airways
Wed 16/1011:05LHR - ORD
Nonstop8h 40mBritish Airways
Deal found 19/5£490
Wed 18/920:25ORD - LHR
Nonstop7h 55mFinnair
Thu 26/914:25LHR - ORD
Nonstop8h 35mFinnair
Deal found 19/5£494
Wed 14/821:30ORD - LHR
Nonstop8h 15mUnited Airlines
Fri 30/815:20LHR - ORD
Nonstop9h 10mUnited Airlines
Deal found 19/5£494
Mon 23/916:45ORD - LHR
Nonstop7h 50mBritish Airways
Sat 12/1008:10LHR - ORD
Nonstop8h 35mBritish Airways
Deal found 19/5£509
Tue 8/1021:25ORD - LHR
Nonstop7h 50mBritish Airways
Tue 15/1015:35LHR - ORD
Nonstop8h 40mBritish Airways
Deal found 18/5£510
Wed 16/1021:25ORD - LHR
Nonstop7h 50mBritish Airways
Thu 24/1008:10LHR - ORD
Nonstop8h 35mBritish Airways
Deal found 18/5£511
Sun 22/916:45ORD - LHR
Nonstop7h 50mBritish Airways
Fri 11/1015:35LHR - ORD
Nonstop8h 40mBritish Airways
Deal found 19/5£515

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 835,519 searches. Data last updated 20 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.
Wed 29/508:20ORD - LHR
Nonstop7h 50mAmerican Airlines
Wed 5/606:10LHR - ORD
1 stop13h 35mAmerican Airlines
Deal found 19/5£537
Thu 30/508:20ORD - LHR
Nonstop7h 50mIberia
Thu 6/606:15LHR - ORD
1 stop14h 05mIberia
Deal found 19/5£539
Wed 29/508:20ORD - LHR
Nonstop7h 50mBritish Airways
Mon 3/619:10LHR - ORD
1 stop25h 20mBritish Airways
Deal found 20/5£543
Wed 29/508:20ORD - LHR
Nonstop7h 50mIberia
Wed 5/619:10LHR - ORD
1 stop25h 10mIberia
Deal found 19/5£547
Wed 29/508:20ORD - LHR
Nonstop7h 50mBritish Airways
Fri 7/608:10LHR - ORD
Nonstop8h 35mBritish Airways
Deal found 19/5£553
Thu 30/508:20ORD - LHR
Nonstop7h 50mBritish Airways
Mon 3/620:35LHR - ORD
1 stop26h 10mBritish Airways
Deal found 19/5£557
Wed 29/508:20ORD - LHR
Nonstop7h 50mBritish Airways
Wed 19/606:10LHR - ORD
1 stop13h 35mBritish Airways
Deal found 19/5£559
Thu 30/508:20ORD - LHR
Nonstop7h 50mAmerican Airlines
Tue 4/609:15LHR - ORD
1 stop12h 31mAmerican Airlines
Deal found 19/5£560
Mon 27/508:20ORD - LHR
Nonstop7h 50mFinnair
Thu 13/610:30LHR - ORD
1 stop14h 49mFinnair
Deal found 19/5£561

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 835,519 searches. Data last updated 20 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.
Mon 4/1118:30ORD - LHR
1 stop10h 25mIcelandair
Deal found 19/5£186
Tue 24/922:15ORD - LHR
1 stop16h 05mIcelandair
Deal found 19/5£192
Sun 6/1019:30ORD - LHR
1 stop10h 25mIcelandair
Deal found 19/5£197
Wed 23/1019:30ORD - LHR
1 stop10h 25mIcelandair
Deal found 18/5£201
Mon 23/919:30ORD - LHR
1 stop10h 25mIcelandair
Deal found 19/5£207
Wed 21/811:14ORD - LHR
2 stops18h 41mMultiple Airlines
Deal found 19/5£233
Tue 23/721:30ORD - LHR
2 stops32h 25mMultiple Airlines
Deal found 19/5£234
Mon 19/819:25ORD - LHR
1 stop10h 30mIcelandair
Deal found 19/5£235
Sun 18/822:15ORD - LHR
1 stop16h 05mIcelandair
Deal found 19/5£236

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 835,519 searches. Data last updated 20 May 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£387 - £459

Route

Depart

Return

Price

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 13/11

1 stop14h 15m

London Heathrow

Thu 21/11

1 stop25h 35m

£387

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Fri 8/11

2 stops31h 25m

London Heathrow

Mon 11/11

1 stop17h 25m

£409

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 6/11

2 stops17h 35m

London Heathrow

Tue 12/11

2 stops34h 00m

£420

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 19/8

1 stop16h 05m

London Heathrow

Fri 23/8

1 stop29h 50m

£429

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 5/11

1 stop11h 10m

London Heathrow

Sun 17/11

1 stop14h 05m

£445

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 13/10

Nonstop7h 50m

London Heathrow

Wed 23/10

1 stop13h 35m

£453

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 25/9

Nonstop7h 50m

London Heathrow

Mon 14/10

1 stop22h 30m

£454

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 6/11

Nonstop7h 40m

London Heathrow

Thu 21/11

1 stop14h 05m

£456

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 8/10

Nonstop8h 15m

London Heathrow

Fri 18/10

1 stop12h 50m

£459

Flights are sorted by cheapest first

Deals found on 19/5

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 20 May 2024.
To help decide which airline to fly from Illinois to London, see what other customers have to say about TAP AIR PORTUGAL, Scandinavian Airlines and Icelandair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
10,615 reviews
Check prices

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.4

Overall

8.0

Boarding

8.2

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
8.0
Very Good
10,615 reviews
Delta
8.0
Very Good
10,615 reviews
Check prices

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.4

Overall

8.0

Boarding

8.2

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
1,558 reviews
Delta
8.0
Very Good
10,615 reviews
Check prices

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.4

Overall

8.0

Boarding

8.2

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
1,980 reviews
Delta
8.0
Very Good
10,615 reviews
Check prices

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.4

Overall

8.0

Boarding

8.2

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
1,372 reviews
Delta
8.0
Very Good
10,615 reviews
Check prices

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.4

Overall

8.0

Boarding

8.2

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
730 reviews
Delta
8.0
Very Good
10,615 reviews
Check prices

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.4

Overall

8.0

Boarding

8.2

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 £400 on Cheapflights?

    Yes, there are multiple flights from Illinois to London Heathrow Airport for under £400. The cheapest flight booked recently is on TAP AIR PORTUGAL for just £387, but on average you can expect to pay £412.

  • 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 £512.

  • Are there last-minute flights available from Illinois to London Heathrow Airport for under £600?

    There are currently 20+ open flights from Illinois to London Heathrow Airport within the next 7 days for less than £600.

  • 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 (92%), Air Canada (78%) or Austrian Airlines (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 £1,428 for a flight from Illinois to London Heathrow Airport. The cheapest flight overall is £358 while the most popular route, (Chicago O'Hare Intl - London Heathrow) is currently priced at £376.

  • 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 20/5.

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 835,519 searches. Data last updated 20 May 2024.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest£346Average£403FlexibilityNo cancel feeOn-time77%
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LufthansaCheapest£386Average£625FlexibilityNo cancel feeOn-time76%
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United AirlinesCheapest£402Average£702FlexibilityNo cancel feeOn-time69%
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Virgin AtlanticCheapest£405Average£424FlexibilityNo cancel feeOn-time72%
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Aer LingusCheapest£468Average£680FlexibilityNo cancel feeOn-timeN/A
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IberiaCheapest£494Average£674FlexibilityNo cancel feeOn-time77%
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British AirwaysCheapest£496Average£686FlexibilityNo cancel feeOn-time70%
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TAP AIR PORTUGALCheapest£529Average£694FlexibilityNo cancel feeOn-timeN/A
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American AirlinesCheapest£577Average£768FlexibilityNo cancel feeOn-time71%
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FinnairCheapest£630Average£765FlexibilityNo 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 20 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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