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Cheap flights from Illinois to London from £144

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 21/9. 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 — LON
21 May — 28 May1
1 adult
Tue 21/5
Tue 28/5

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 11 days in advance, which can save you up to 3% on flights from Illinois to London compared to booking the week you need them. Waiting 11 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £510. For sooner than that we have options available in the next 3 days from £525.

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

Flights from Illinois to London lean towards being more expensive in June. Prices are generally better when you fly from Illinois to London in February, with the cheapest ticket starting at £343.

When is the cheapest time to fly from Illinois to London (IL - LON)?

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

Cheap Finnair flights from Illinois to London

Explore cheap flight options specifically provided by Finnair for the route between Illinois and London. 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 844,321 searches. Data last updated 16 May 2024.
Take a look at some of the lowest-priced Finnair flights heading from Illinois to London. Be sure to come back soon if the deals available don't appeal to you at this time.
Tue 21/508:20ORD - LHR
Nonstop7h 50mFinnair
Tue 28/512:15LHR - ORD
Nonstop8h 40mFinnair
Deal found 15/5£359
Mon 7/1021:15ORD - LHR
Nonstop7h 50mFinnair
Tue 15/1010:30LHR - ORD
1 stop14h 36mFinnair
Deal found 15/5£403
Tue 12/1109:00ORD - LHR
Nonstop7h 40mFinnair
Fri 22/1115:45LHR - ORD
Nonstop9h 00mFinnair
Deal found 15/5£470
Wed 5/608:10ORD - LHR
Nonstop8h 00mFinnair
Wed 19/608:10LHR - ORD
Nonstop8h 35mFinnair
Deal found 15/5£517
Fri 24/508:20ORD - LHR
Nonstop7h 50mFinnair
Tue 28/512:15LHR - ORD
Nonstop8h 40mFinnair
Deal found 15/5£552
Tue 21/508:20ORD - LHR
Nonstop7h 50mFinnair
Sun 30/610:05LHR - ORD
Nonstop8h 40mFinnair
Deal found 16/5£553
Tue 21/508:20ORD - LHR
Nonstop7h 50mFinnair
Mon 27/512:15LHR - ORD
Nonstop8h 40mFinnair
Deal found 15/5£556
Tue 21/523:00ORD - LHR
Nonstop7h 45mFinnair
Mon 3/608:10LHR - ORD
Nonstop8h 35mFinnair
Deal found 16/5£557
Fri 24/508:20ORD - LHR
Nonstop7h 50mFinnair
Thu 30/510:05LHR - ORD
1 stop15h 16mFinnair
Deal found 15/5£561

Cheap Scandinavian Airlines flights from Illinois to London

Explore cheap flight options specifically provided by Scandinavian Airlines for the route between Illinois and London. 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 844,321 searches. Data last updated 16 May 2024.
Browse through some of the cheapest Scandinavian Airlines flights travelling from Illinois to London. Check back soon if you're not seeing flights that suit your needs.
Fri 8/1120:10ORD - LHR
2 stops31h 25mScandinavian Airlines
Mon 11/1106:40LHR - ORD
1 stop17h 25mScandinavian Airlines
Deal found 16/5£410
Wed 23/1019:45ORD - LHR
1 stop17h 45mScandinavian Airlines
Thu 31/1007:05LHR - ORD
2 stops17h 00mScandinavian Airlines
Deal found 16/5£418
Wed 23/1019:45ORD - LHR
2 stops16h 45mScandinavian Airlines
Thu 31/1007:05LHR - ORD
2 stops17h 00mScandinavian Airlines
Deal found 15/5£430

Cheap Illinois to London flights in May & June 2024

Find cheap flight options from Illinois to London specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 844,321 searches. Prices were last updated on 16 May 2024.
Check out some of the best flight deals from Illinois to London in 2024. For more flight deals, be sure to check back very soon.
Tue 18/617:18ORD - LGW
2 stops34h 42mMultiple Airlines
Mon 24/620:40LGW - ORD
1 stop19h 34mMultiple Airlines
Deal found 16/5£458
Tue 18/617:34ORD - LGW
1 stop34h 26mMultiple Airlines
Mon 24/620:40LGW - ORD
1 stop19h 34mMultiple Airlines
Deal found 16/5£470
Sun 19/514:20ORD - LHR
1 stop11h 35mSWISS
Mon 10/618:40LHR - ORD
1 stop23h 30mSWISS
Deal found 16/5£490
Sat 15/615:56ORD - LGW
1 stop33h 04mMultiple Airlines
Mon 17/610:00LGW - ORD
1 stop28h 21mMultiple Airlines
Deal found 16/5£491
Wed 19/605:39ORD - LGW
1 stop22h 21mMultiple Airlines
Sun 23/620:40LGW - ORD
1 stop31h 12mMultiple Airlines
Deal found 16/5£492
Wed 12/614:45ORD - LHR
1 stop11h 00mIberia
Sun 30/608:10LHR - ORD
Nonstop8h 35mIberia
Deal found 16/5£495
Mon 17/608:27MDW - LGW
1 stop16h 33mMultiple Airlines
Fri 21/610:00LGW - MDW
1 stop28h 34mMultiple Airlines
Deal found 16/5£495
Tue 18/617:18ORD - LGW
2 stops34h 42mMultiple Airlines
Wed 26/613:05LGW - ORD
1 stop14h 47mMultiple Airlines
Deal found 16/5£496
Wed 12/614:45ORD - LHR
1 stop11h 00mIberia
Sun 30/612:30LHR - ORD
1 stop12h 50mIberia
Deal found 16/5£499

Illinois to London 2024 flight deals

Discover exclusive flight deals for travel between Illinois and London in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 844,321 searches. Data last updated 16 May 2024.
Check out some of the best flight deals from Illinois to London in 2024. For more flight deals, be sure to check back very soon.
Mon 9/918:00ORD - LHR
1 stop17h 45mTAP AIR PORTUGAL
Mon 23/906:00LHR - ORD
1 stop16h 15mTAP AIR PORTUGAL
Deal found 16/5£381
Wed 6/1119:15ORD - LGW
1 stop13h 50mTAP AIR PORTUGAL
Tue 12/1116:35LGW - ORD
1 stop28h 55mTAP AIR PORTUGAL
Deal found 16/5£384
Wed 2/1018:00ORD - LHR
1 stop15h 35mTAP AIR PORTUGAL
Tue 22/1019:50LHR - ORD
1 stop26h 20mTAP AIR PORTUGAL
Deal found 15/5£386
Mon 30/918:00ORD - LHR
1 stop12h 45mTAP AIR PORTUGAL
Tue 15/1019:50LHR - ORD
1 stop26h 20mTAP AIR PORTUGAL
Deal found 16/5£390
Wed 30/1020:15ORD - LGW
1 stop13h 50mTAP AIR PORTUGAL
Thu 7/1115:55LGW - ORD
1 stop29h 35mTAP AIR PORTUGAL
Deal found 16/5£391
Fri 18/1018:00ORD - LHR
1 stop12h 45mTAP AIR PORTUGAL
Sat 26/1018:45LHR - ORD
1 stop27h 45mTAP AIR PORTUGAL
Deal found 16/5£397
Mon 21/1018:00ORD - LHR
1 stop12h 45mTAP AIR PORTUGAL
Tue 29/1018:30LHR - ORD
1 stop27h 00mTAP AIR PORTUGAL
Deal found 16/5£398
Fri 18/1018:00ORD - LHR
1 stop12h 45mTAP AIR PORTUGAL
Sat 26/1018:45LHR - ORD
1 stop27h 45mTAP AIR PORTUGAL
Deal found 16/5£398
Sun 29/918:00ORD - LHR
1 stop12h 45mTAP AIR PORTUGAL
Sun 6/1019:50LHR - ORD
1 stop26h 25mTAP AIR PORTUGAL
Deal found 16/5£399

Direct flights to London from Illinois

Discover direct flight options from Illinois to London. 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 844,321 searches. Data last updated 16 May 2024.
For a quicker trip, book one of these direct flights from Illinois to London. Users seeking other options on flights from Illinois to London should update the search form at the top of the page.
Wed 2/1021:25ORD - LHR
Nonstop7h 50mBritish Airways
Thu 17/1008:10LHR - ORD
Nonstop8h 35mBritish Airways
Deal found 15/5£469
Wed 2/1021:25ORD - LHR
Nonstop7h 50mBritish Airways
Tue 8/1013:10LHR - ORD
Nonstop8h 40mBritish Airways
Deal found 16/5£469
Wed 16/1021:25ORD - LHR
Nonstop7h 50mBritish Airways
Wed 23/1008:10LHR - ORD
Nonstop8h 35mBritish Airways
Deal found 16/5£477
Tue 8/1019:15ORD - LHR
Nonstop7h 50mBritish Airways
Tue 15/1013:10LHR - ORD
Nonstop8h 40mBritish Airways
Deal found 16/5£489
Wed 9/1021:25ORD - LHR
Nonstop7h 50mBritish Airways
Tue 15/1011:05LHR - ORD
Nonstop8h 40mBritish Airways
Deal found 16/5£491
Sun 18/818:45ORD - LHR
Nonstop8h 15mUnited Airlines
Wed 28/813:05LHR - ORD
Nonstop8h 55mUnited Airlines
Deal found 15/5£493
Tue 3/908:35ORD - LHR
Nonstop7h 35mIberia
Tue 17/908:10LHR - ORD
Nonstop8h 35mIberia
Deal found 16/5£494
Wed 12/618:00ORD - LHR
Nonstop7h 50mIberia
Sun 30/608:10LHR - ORD
Nonstop8h 35mIberia
Deal found 16/5£495
Tue 1/1016:45ORD - LHR
Nonstop7h 50mBritish Airways
Wed 9/1015:35LHR - ORD
Nonstop8h 40mBritish Airways
Deal found 16/5£498

Illinois to London flights leaving soon

Find last-minute flight options from Illinois to London 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 844,321 searches. Data last updated 16 May 2024.
Users seeking a last-minute flight from Illinois to London should consider booking one of these fares. Users should be sure to double check the price, date, and time of their last-minute flight.
Tue 21/508:20ORD - LHR
Nonstop7h 50mFinnair
Tue 28/512:15LHR - ORD
Nonstop8h 40mFinnair
Deal found 15/5£359
Fri 24/508:20ORD - LHR
Nonstop7h 50mBritish Airways
Tue 28/510:05LHR - ORD
Nonstop8h 40mBritish Airways
Deal found 15/5£488
Thu 23/508:20ORD - LHR
Nonstop7h 50mIberia
Tue 28/512:15LHR - ORD
Nonstop8h 40mIberia
Deal found 15/5£493
Thu 23/508:20ORD - LHR
Nonstop7h 50mIberia
Tue 28/513:00LHR - ORD
1 stop12h 54mIberia
Deal found 15/5£497
Tue 21/511:05ORD - LGW
1 stop16h 55mDelta
Tue 28/512:00LGW - ORD
1 stop14h 11mDelta
Deal found 16/5£500
Tue 21/523:00ORD - LHR
Nonstop7h 45mIberia
Tue 28/520:10LHR - ORD
1 stop24h 10mIberia
Deal found 14/5£503
Tue 21/515:45ORD - LHR
Nonstop8h 10mUnited Airlines
Fri 7/608:40LHR - ORD
1 stop13h 15mUnited Airlines
Deal found 15/5£504
Tue 21/509:32ORD - LGW
2 stops18h 28mAir France
Tue 28/512:00LGW - ORD
2 stops14h 55mAir France
Deal found 16/5£504
Tue 21/515:45ORD - LHR
Nonstop8h 10mUnited Airlines
Fri 31/508:40LHR - ORD
1 stop13h 15mUnited Airlines
Deal found 16/5£505

One-way flights to London from Illinois

Search for one-way flight options from Illinois to London. 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 844,321 searches. Data last updated 16 May 2024.
Take a look at some of the best available options we've come across on one-way flights from Illinois to London. Those seeking round-trip flights from Illinois to London should utilise the search form at the top of the page.
Sat 21/916:45ORD - LGW
1 stop14h 45mMultiple Airlines
Deal found 15/5£144
Wed 18/920:13MDW - LGW
1 stop28h 47mMultiple Airlines
Deal found 16/5£147
Tue 10/907:27ORD - LGW
1 stop17h 33mMultiple Airlines
Deal found 15/5£147
Wed 18/921:15ORD - LGW
1 stop27h 45mMultiple Airlines
Deal found 15/5£148
Tue 10/907:27ORD - LGW
1 stop17h 33mMultiple Airlines
Deal found 16/5£148
Sat 28/911:14ORD - LGW
1 stop20h 16mMultiple Airlines
Deal found 15/5£151
Tue 16/721:15ORD - LGW
1 stop27h 45mMultiple Airlines
Deal found 15/5£159
Wed 17/709:31MDW - LGW
1 stop15h 29mMultiple Airlines
Deal found 16/5£161
Wed 17/721:15ORD - LGW
1 stop27h 45mMultiple Airlines
Deal found 16/5£162

Find flights from Illinois to London within your budget

Customise your flight search to find flights from Illinois to London 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 844,321 searches. Data last updated 16 May 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£364 - £452

Route

Depart

Return

Price

Chicago O'Hare IntlLondon Gatwick

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Sun 3/11

2 stops18h 25m

London Gatwick

Tue 5/11

1 stop28h 55m

£364

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 7/10

Nonstop7h 50m

London Heathrow

Tue 15/10

1 stop14h 36m

£403

Chicago O'Hare IntlLondon Gatwick

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Tue 1/10

1 stop14h 11m

London Gatwick

Tue 8/10

1 stop15h 57m

£405

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

£410

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 3/9

1 stop18h 55m

London Heathrow

Tue 17/9

1 stop11h 10m

£429

Chicago O'Hare IntlLondon Gatwick

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Sun 11/8

1 stop14h 05m

London Gatwick

Mon 26/8

1 stop31h 00m

£443

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 1/10

1 stop11h 45m

London Heathrow

Thu 31/10

1 stop13h 20m

£447

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 5/11

1 stop10h 10m

London Heathrow

Tue 12/11

1 stop13h 10m

£451

Chicago O'Hare IntlLondon Gatwick

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Wed 9/10

1 stop14h 00m

London Gatwick

Wed 16/10

1 stop15h 00m

£452

Flights are sorted by cheapest first

Deals found on 15/5

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

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated 16 May 2024.
See what other customers who have flown with Finnair, Scandinavian Airlines and SWISS from Illinois to London have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
10,673 reviews
Check prices

Food

7.4

Crew

8.6

Entertainment

8.0

Overall

8.0

Comfort

7.9

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
10,673 reviews
Delta
8.0
Very Good
10,673 reviews
Check prices

Food

7.4

Crew

8.6

Entertainment

8.0

Overall

8.0

Comfort

7.9

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
1,568 reviews
Delta
8.0
Very Good
10,673 reviews
Check prices

Food

7.4

Crew

8.6

Entertainment

8.0

Overall

8.0

Comfort

7.9

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
1,994 reviews
Delta
8.0
Very Good
10,673 reviews
Check prices

Food

7.4

Crew

8.6

Entertainment

8.0

Overall

8.0

Comfort

7.9

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
1,376 reviews
Delta
8.0
Very Good
10,673 reviews
Check prices

Food

7.4

Crew

8.6

Entertainment

8.0

Overall

8.0

Comfort

7.9

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
735 reviews
Delta
8.0
Very Good
10,673 reviews
Check prices

Food

7.4

Crew

8.6

Entertainment

8.0

Overall

8.0

Comfort

7.9

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 London. 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 for under £400 on Cheapflights?

    Yes, there are multiple flights from Illinois to London for under £400. The cheapest flight booked recently is on TAP AIR PORTUGAL for just £364, but on average you can expect to pay £387.

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

    Cheapflights has at least 20 direct flights from Illinois to London under £500. A good price for a nonstop flight from Illinois to London is less than £502.

  • Are there last-minute flights available from Illinois to London for under £400?

    There are currently 20+ open flights from Illinois to London within the next 7 days for less than £400.

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

    Direct flights are available for this route on the following days: Sunday, Monday, Friday, Saturday.

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

    6 flight departures from Illinois to London per day on average.
    Evening (6pm - Midnight) - 100% of flight departures

  • How long is the flight from Illinois to London?

    Departing from Illinois to London will take you 7h 50m. Illinois and London are separated by a distance of 3964 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Illinois to London?

    When deciding which route to take from Illinois to London consider Chicago O'Hare Intl - London Heathrow, Chicago O'Hare Intl - London Gatwick or Chicago O'Hare Intl - London City as they are the most popular.

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

    Before booking your flight from Illinois to London check out the most popular airlines for this route: American Airlines, Finnair or British Airways.

  • What are the most reliable airlines from Illinois to London?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Illinois to London on time: EL AL (91%), Qatar Airways (78%), Aer Lingus (78%).

  • What are the cheapest flights from Illinois to London?

    Looking for the cheapest flight from Illinois to London? While on average our users pay £1,353, our data indicates the cheapest price to be £355. The most popular route (Chicago O'Hare Intl - London Heathrow), is priced around £359.

  • What does ORD to LHR mean?

    ORD stands for Chicago O'Hare Intl Airport, while LHR stands for London Heathrow Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry. London Gatwick Airport (LGW), London Stansted Airport (STN), London Luton Airport (LTN), London City Airport (LCY), London Southend Airport (SEN) are some additional IATA codes for airports related to your trip.

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

    The amount of baggage you can bring on your Illinois to London 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 London with specific airlines?

    Yes, Cheapflights allows you to browse and filter Illinois to London 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 London that include hotel bookings?

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

  • How can I find direct flights from Illinois to London?

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

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

    Yes. Cheapflights offers flight deals from Illinois to London 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 London that allow pets onboard?

    Many airlines flying from Illinois to London 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 London?

    Yes, you can often find last-minute deals on Illinois to London 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 flight deals updated?

    The Illinois to London flight deals you see on this page were last updated on 16/5.

See more FAQs

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Alternative routes for Illinois to London
See prices for flight routes from nearby airports that may be better suited for you.

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Top 10 airlines flying from Illinois to London

Discover the top 10 airlines that operate flights from Illinois to London. 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 844,321 searches. Data last updated 16 May 2024.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest£347Average£403FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
LufthansaCheapest£387Average£626FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£403Average£704FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£406Average£425FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Aer LingusCheapest£469Average£681FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
British AirwaysCheapest£484Average£586FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IberiaCheapest£495Average£675FlexibilityNo cancel feeOn-time77%
Search Iberia flights
TAP AIR PORTUGALCheapest£530Average£696FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
American AirlinesCheapest£578Average£770FlexibilityNo cancel feeOn-time71%
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Search flights from Illinois to London by cabin class

Find flights from Illinois to London, 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 London

Find hourly flight availability from Illinois to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 16 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
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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 London?

Cheapflights helps you search for flights from Illinois to London via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Illinois to London for you. Better yet — we are completely free to use.

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

Certainly. Search results for flights to London from Illinois shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights offers price alerts on Illinois to London 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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