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$297+ Cheap flights from the United Kingdom 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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ORD
janv. 26 — févr. 21
dim. 1/26
dim. 2/2
1 adult, Economy
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Cheap flight deals from United Kingdom to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from United Kingdom (GB0) 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 janvier 21, 2025.

Round-trip from

$532
(Gotogate)

One-way from

$297
(Kiwi.com)

Good round-trip deal

$736 or less

Good one-way deal

$667 or less
From United Kingdom to Illinois
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One-way flight from United Kingdom to Illinois
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Price to beat on a round-trip flight from United Kingdom to Illinois.
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Price to beat on a one-way flight from United Kingdom to Illinois.
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Find flight deals from United Kingdom to Illinois

Cheapest flights from United Kingdom to Illinois
Explore the most affordable flight options available from United Kingdom to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on janvier 21, 2025.

This Gotogate deal was found by Cheapflights users on 1/21. 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.
jeu. 3/137:40 amLHR - ORD
1 stop12h 30mLufthansa
jeu. 3/276:50 pmORD - LHR
Nonstop8h 05mLufthansa
Deal found 1/21$532
This Scandinavian Airlines deal was found by Cheapflights users on 1/21. 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.
mer. 2/197:50 pmLHR - ORD
2 stops28h 00mScandinavian Airlines
dim. 3/27:40 pmORD - LHR
1 stop16h 00mScandinavian Airlines
Deal found 1/21$533
This Mytrip deal was found by Cheapflights users on 1/21. 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.
lun. 6/233:40 pmLGW - ORD
1 stop11h 35mIcelandair
lun. 7/710:15 pmORD - LGW
1 stop10h 25mIcelandair
Deal found 1/21$536
This Gotogate deal was found by Cheapflights users on 1/21. 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.
jeu. 3/207:25 pmLHR - ORD
1 stop24h 40mAustrian Airlines
mar. 3/256:50 pmORD - LHR
Nonstop8h 05mAustrian Airlines
Deal found 1/21$537
This United Airlines deal was found by Cheapflights users on 1/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 2/169:30 amLHR - ORD
1 stop33h 55mUnited Airlines
dim. 2/238:02 pmORD - LHR
1 stop31h 38mUnited Airlines
Deal found 1/19$538
This Mytrip deal was found by Cheapflights users on 1/21. 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.
lun. 3/36:30 amSTN - ORD
2 stops16h 50mMultiple Airlines
jeu. 3/66:30 pmORD - STN
2 stops21h 20mMultiple Airlines
Deal found 1/21$538
This Air Canada deal was found by Cheapflights users on 1/20. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 2/196:50 amLHR - ORD
2 stops13h 55mMultiple Airlines
mer. 2/2611:35 amORD - LHR
2 stops14h 55mMultiple Airlines
Deal found 1/20$539
This British Airways deal was found by Cheapflights users on 1/20. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 2/193:45 pmLHR - ORD
Nonstop9h 00mBritish Airways
mer. 2/269:45 pmORD - LHR
Nonstop7h 45mBritish Airways
Deal found 1/20$540
This American Airlines deal was found by Cheapflights users on 1/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 1/2711:55 amLHR - ORD
Nonstop8h 50mAmerican Airlines
lun. 2/106:35 pmORD - LHR
Nonstop7h 40mAmerican Airlines
Deal found 1/20$541
This Kiwi.com deal was found by Cheapflights users on 1/21. 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.
lun. 2/36:45 pmLGW - ORD
1 stop27h 30mSWISS
lun. 2/177:05 pmORD - LGW
1 stop16h 45mSWISS
Deal found 1/21$542
This Expedia deal was found by Cheapflights users on 1/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/189:15 amLCY - ORD
1 stop13h 00mSWISS
mar. 2/257:05 pmORD - LCY
1 stop11h 45mSWISS
Deal found 1/21$542
This Mytrip deal was found by Cheapflights users on 1/21. 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. 3/47:55 pmLGW - ORD
3 stops30h 10mMultiple Airlines
lun. 3/1710:25 pmORD - LGW
2 stops19h 25mMultiple Airlines
Deal found 1/21$543

Find flights from United Kingdom to Illinois within your budget

Customize your flight search to find flights from United Kingdom 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 2,558,603 searches. Data last updated janvier 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LondonChicago

LHR - ORD

LHRORD

London Heathrow

jeu. 3/13

7:40 am-3:10 pm

1 stop12h 30m

Chicago O'Hare Intl

jeu. 3/27

6:50 pm-7:55 am

Nonstop8h 05m

$532

LondonChicago

LHR - ORD

LHRORD

London Heathrow

mer. 2/19

7:50 pm-5:50 pm

2 stops28h 00m

Chicago O'Hare Intl

dim. 3/2

7:40 pm-5:40 pm

1 stop16h 00m

$533

LondonChicago

LGW - ORD

LGWORD

London Gatwick

lun. 6/23

3:40 pm-9:15 pm

1 stop11h 35m

Chicago O'Hare Intl

lun. 7/7

10:15 pm-2:40 pm

1 stop10h 25m

$536

LondonChicago

LHR - ORD

LHRORD

London Heathrow

jeu. 3/20

7:25 pm-3:05 pm

1 stop24h 40m

Chicago O'Hare Intl

mar. 3/25

6:50 pm-7:55 am

Nonstop8h 05m

$537

LondonChicago

LHR - ORD

LHRORD

London Heathrow

dim. 2/16

9:30 am-1:25 pm

1 stop33h 55m

Chicago O'Hare Intl

dim. 2/23

8:02 pm-9:40 am

1 stop31h 38m

$538

LondonChicago

STN - ORD

STNORD

London Stansted

lun. 3/3

6:30 am-5:20 pm

2 stops16h 50m

Chicago O'Hare Intl

jeu. 3/6

6:30 pm-9:50 pm

2 stops21h 20m

$538

LondonChicago

LHR - ORD

LHRORD

London Heathrow

mer. 2/19

6:50 am-2:45 pm

2 stops13h 55m

Chicago O'Hare Intl

mer. 2/26

11:35 am-8:30 am

2 stops14h 55m

$539

LondonChicago

LHR - ORD

LHRORD

London Heathrow

mer. 2/19

3:45 pm-6:45 pm

Nonstop9h 00m

Chicago O'Hare Intl

mer. 2/26

9:45 pm-11:30 am

Nonstop7h 45m

$540

LondonChicago

LGW - ORD

LGWORD

London Gatwick

lun. 2/3

6:45 pm-4:15 pm

1 stop27h 30m

Chicago O'Hare Intl

lun. 2/17

7:05 pm-5:50 pm

1 stop16h 45m

$542

LondonChicago

LCY - ORD

LCYORD

London City

mar. 2/18

9:15 am-4:15 pm

1 stop13h 00m

Chicago O'Hare Intl

mar. 2/25

7:05 pm-12:50 pm

1 stop11h 45m

$542

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

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

Have a flexible travel schedule? Discover the best time to fly to Illinois from United Kingdom 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 United Kingdom to Illinois

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

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

Currently, August is the cheapest month in which you can book a flight from United Kingdom to Illinois (average of $245). Flying from United Kingdom to Illinois in March is currently the most expensive (average of $320). 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 GB to IL?

Find hourly flight availability from United Kingdom 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 janvier 21, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from United Kingdom to Illinois as you normally would.

Weekly flight availability from United Kingdom to Illinois

Explore weekly flight availability from United Kingdom 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 janvier 21, 2025.

The most flights from GB0 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 janvier 21, 2025.
Read through reviews of airlines operating flights from United Kingdom to Illinois, such as Lufthansa, SWISS and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

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
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

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
1,341 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

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
1,117 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 10

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

Finnair
7.6
Good
1,286 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 10

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

Austrian Airlines
7.6
Good
786 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

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 United Kingdom 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 United Kingdom to Illinois one-way?

    $440 is the cheapest one-way deal found within the past few days, from Icelandair. You may also be able to find cheap deals on Aer Lingus and Virgin Atlantic, with prices starting from $442 and $509, respectively.

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

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

  • How can I find direct flights from United Kingdom to Illinois?

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

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

    Yes. Cheapflights offers flight deals from United Kingdom 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 United Kingdom to Illinois?

    Currently, August is the cheapest month in which you can book a flight from United Kingdom to Illinois (average of $245). Flying from United Kingdom to Illinois in March is currently the most expensive (average of $320). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for United Kingdom 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 United Kingdom to Illinois

Discover the top 10 airlines that operate flights from United Kingdom 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 2,558,603 searches. Data last updated janvier 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$451Average$635FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$462Average$666FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$483Average$729FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$517Average$819FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$556Average$791FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$559Average$887FlexibilityNo cancel feeOn-time70%
FinnairCheapest$562Average$809FlexibilityNo cancel feeOn-time76%
IberiaCheapest$564Average$787FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$579Average$1,017FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$660Average$1,067FlexibilityNo cancel feeOn-time76%
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