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$334+ Cheap flights from London (LON) to Illinois

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 2/20. Fares are subject to change and may not be available on all flights or dates of travel.
LON — ORD
nov. 25 — dic. 21
lun. 11/25
lun. 12/2
1 adult, Economy
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Cheap flight deals from London to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated noviembre 20, 2024.

Find flight deals from London to Illinois

Cheapest flights from London to Illinois
Explore the most affordable flight options available from London to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 20, 2024.

This Mytrip deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/53:55 pmLGW - ORD
1 stop29h 35mTAP AIR PORTUGAL
dom. 12/88:25 pmORD - LGW
1 stop13h 20mTAP AIR PORTUGAL
Deal found 11/20$563
This Voliamo deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Voliamo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/56:30 pmLHR - ORD
1 stop27h 00mTAP AIR PORTUGAL
dom. 12/88:25 pmORD - LHR
1 stop15h 05mTAP AIR PORTUGAL
Deal found 11/19$563
This Scandinavian Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/166:40 amLHR - ORD
1 stop15h 10mScandinavian Airlines
jue. 1/97:10 pmORD - LHR
2 stops17h 40mScandinavian Airlines
Deal found 11/19$568
This Gotogate deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/511:55 amLGW - ORD
1 stop11h 25mIcelandair
dom. 12/86:30 pmORD - LGW
1 stop10h 25mIcelandair
Deal found 11/19$573
This Gotogate deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/57:50 amLHR - ORD
1 stop12h 10mAer Lingus
mar. 12/103:55 pmORD - LHR
1 stop10h 10mAer Lingus
Deal found 11/19$574
This Mytrip deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/68:50 pmLGW - ORD
2 stops27h 05mMultiple Airlines
dom. 12/83:55 pmORD - LGW
2 stops22h 25mMultiple Airlines
Deal found 11/19$592
This Gotogate deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/118:40 pmLHR - ORD
1 stop26h 40mIcelandair
mar. 12/176:30 pmORD - LHR
1 stop19h 00mIcelandair
Deal found 11/20$603
This The Travel House deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/276:50 amLHR - ORD
1 stop11h 25mLufthansa
sáb. 11/304:00 pmORD - LHR
1 stop32h 30mLufthansa
Deal found 11/19$605
This Kiwi.com deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/46:30 amSTN - ORD
1 stop13h 30mMultiple Airlines
mar. 12/107:40 pmORD - STN
1 stop11h 45mMultiple Airlines
Deal found 11/19$610
This Mytrip deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/39:55 amLHR - ORD
2 stops34h 10mMultiple Airlines
mar. 12/103:35 pmORD - LHR
2 stops22h 30mMultiple Airlines
Deal found 11/19$613
This Kiwi.com deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/46:50 amLTN - ORD
1 stop13h 10mMultiple Airlines
mar. 12/103:55 pmORD - LTN
1 stop11h 50mMultiple Airlines
Deal found 11/19$613
This Delta deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/46:30 amLHR - MDW
2 stops16h 32mDelta
mar. 12/1012:44 pmMDW - LHR
1 stop11h 36mDelta
Deal found 11/19$613

Find flights from London to Illinois within your budget

Customize your flight search to find flights from London to Illinois 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 2,629,791 searches. Data last updated noviembre 20, 2024.

Fly from

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Fly to

Any airport

Route

Depart

Return

Price

LondonChicago

LGW - ORD

LGWORD

London Gatwick

jue. 12/5

3:55 pm-3:30 pm

1 stop29h 35m

Chicago O'Hare Intl

dom. 12/8

8:25 pm-3:45 pm

1 stop13h 20m

$563

LondonChicago

LHR - ORD

LHRORD

London Heathrow

jue. 12/5

6:30 pm-3:30 pm

1 stop27h 00m

Chicago O'Hare Intl

dom. 12/8

8:25 pm-5:30 pm

1 stop15h 05m

$563

LondonChicago

LHR - ORD

LHRORD

London Heathrow

lun. 1/13

6:40 am-3:50 pm

1 stop15h 10m

Chicago O'Hare Intl

lun. 1/27

7:10 pm-5:00 pm

2 stops15h 50m

$565

LondonChicago

LGW - ORD

LGWORD

London Gatwick

vie. 2/7

11:55 am-5:20 pm

1 stop11h 25m

Chicago O'Hare Intl

jue. 4/24

7:30 pm-2:40 pm

1 stop13h 10m

$566

LondonChicago

LHR - ORD

LHRORD

London Heathrow

mar. 3/18

7:00 am-3:30 pm

1 stop13h 30m

Chicago O'Hare Intl

lun. 3/24

4:50 pm-10:15 am

1 stop12h 25m

$567

LondonChicago

LTN - ORD

LTNORD

London Luton

jue. 1/16

7:05 am-5:20 pm

2 stops16h 15m

Chicago O'Hare Intl

mié. 1/22

6:30 pm-9:40 pm

2 stops21h 10m

$569

LondonChicago

LHR - ORD

LHRORD

London Heathrow

jue. 12/5

7:50 am-2:00 pm

1 stop12h 10m

Chicago O'Hare Intl

mar. 12/10

3:55 pm-8:05 am

1 stop10h 10m

$574

LondonChicago

LHR - MDW

LHRMDW

London Heathrow

lun. 2/17

6:30 am-6:14 pm

2 stops17h 44m

Chicago Midway

jue. 2/27

2:08 pm-6:50 am

1 stop10h 42m

$574

LondonChicago

LGW - ORD

LGWORD

London Gatwick

jue. 1/16

2:00 pm-12:39 pm

2 stops28h 39m

Chicago O'Hare Intl

mié. 1/22

7:00 am-6:00 am

1 stop17h 00m

$576

LondonChicago

LHR - ORD

LHRORD

London Heathrow

lun. 1/13

6:20 am-5:20 pm

2 stops17h 00m

Chicago O'Hare Intl

lun. 1/27

6:30 pm-6:20 pm

2 stops17h 50m

$585

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/18

Showing 1-10 of 60 results
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Best time to book a flight from London to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from London with our price prediction graph.
Estimated round-trip 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 London to Illinois

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

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

Currently, September is the cheapest month in which you can book a flight from London to Illinois (average of $232). Flying from London to Illinois in June is currently the most expensive (average of $308). 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 LON to IL?

Find hourly flight availability from London to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated noviembre 20, 2024.

When flying from London to Illinois, 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 London to Illinois

Explore weekly flight availability from London to Illinois. 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 noviembre 20, 2024.

The most flights from LON to USIL are scheduled on a Monday (36 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (30 on average).

Rainfall in Illinois by month

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

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

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

If weather is an important factor for your trip to Illinois, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated noviembre 20, 2024.
Peruse reviews from past customers who have flown with Finnair, Aer Lingus and Virgin Atlantic from London to Illinois to help guide your decision. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,756 reviews

Overall

8.0

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,756 reviews
Delta
8.0
Very good
8,756 reviews

Overall

8.0

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,350 reviews
Delta
8.0
Very good
8,756 reviews

Overall

8.0

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air Transat
7.8
Good
389 reviews
Delta
8.0
Very good
8,756 reviews

Overall

8.0

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair
7.7
Good
1,300 reviews
Delta
8.0
Very good
8,756 reviews

Overall

8.0

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

LOT
7.6
Good
1,165 reviews
Delta
8.0
Very good
8,756 reviews

Overall

8.0

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

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

    To fly one-way, consider booking your trip with Icelandair, which is currently one of the cheapest options available, starting at $531. Aer Lingus flights start at $531 while deals on TAP AIR PORTUGAL start at $542 one-way.

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

    The most popular route from London to Illinois is London Heathrow - Chicago O'Hare Intl. You may also consider London Gatwick - Chicago O'Hare Intl or London City - Chicago O'Hare Intl.

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

    Consider Malaysia Airlines (89%), Air Canada (84%) or Austrian Airlines (84%) when booking your flight. These represent the most reliable airlines when flying from London to Illinois.

  • What are the cheapest flights from London to Illinois?

    The cheapest flight price from London to Illinois is $623. On average you can expect to pay $1,396. The most popular route, (London Heathrow - Chicago O'Hare Intl), can usually be booked for $468.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from London to Illinois 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 London to Illinois?

    Currently, September is the cheapest month in which you can book a flight from London to Illinois (average of $232). Flying from London to Illinois in June is currently the most expensive (average of $308). 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.

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Alternative routes for London to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from London to Illinois

Discover the top 10 airlines that operate flights from London to Illinois. 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 2,629,791 searches. Data last updated noviembre 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$449Average$601FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$483Average$729FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$501Average$676FlexibilityNo cancel feeOn-time76%
FinnairCheapest$535Average$662FlexibilityNo cancel feeOn-time76%
IberiaCheapest$555Average$770FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$556Average$778FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$557Average$1,010FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$561Average$796FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$578Average$733FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$646Average$1,058FlexibilityNo cancel feeOn-time76%
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