Cheap flights from the United Kingdom to Illinois from £286
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 24/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ORD
3 Dec — 10 Dec1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheap flight deals from United Kingdom to Illinois
Enter your travel dates to find the best prices.
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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 3 November 2026.
Thu 19/1112:50 -
2 stops32h 40m
Wed 2/1219:00 -
2 stops17h 35m
Deal found 29/10£483
Wed 2/1206:00 -
2 stops17h 20m
Wed 9/1218:30 -
2 stops16h 45m
Deal found 2/11£488
Wed 9/1208:35 -
2 stops14h 45m
Sun 13/1218:30 -
2 stops12h 50m
Deal found 2/11£508
Sat 21/1113:10 -
2 stops33h 35m
Mon 30/1119:10 -
2 stops21h 20m
Deal found 1/11£509
Thu 12/1107:15 -
2 stops16h 05m
Wed 18/1118:30 -
2 stops20h 45m
Deal found 29/10£518
Fri 20/1121:35 -
2 stops47h 55m
Sun 6/1220:10 -
1 stop13h 35m
Deal found 2/11£518
Sun 22/1107:45 -
2 stops15h 35m
Thu 3/1218:30 -
2 stops20h 45m
Deal found 31/10£519
Fri 13/1115:40 -
Nonstop9h 05m
Wed 9/1221:50 -
Nonstop7h 45m
Deal found 30/10£519
Thu 19/1111:25 -
1 stop34h 05m
Wed 2/1219:00 -
1 stop33h 40m
Deal found 29/10£519
Mon 23/1107:00 -
2 stops16h 20m
Fri 27/1118:30 -
2 stops19h 00m
Deal found 31/10£520
Wed 11/1106:00 -
1 stop15h 30m
Sun 22/1120:10 -
1 stop20h 30m
Deal found 29/10£520
Wed 18/1108:00 -
2 stops15h 20m
Sun 22/1118:30 -
2 stops19h 10m
Deal found 31/10£521
Best flights from United Kingdom to Illinois
Discover carefully curated flight deals from United Kingdom to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 3 November 2026.
Thu 18/210:10 -
1 stop12h 35m
Tue 23/219:10 -
2 stops35h 05m
Deal found 2/11£533
Thu 3/1211:55 -
1 stop11h 25m
Mon 7/1218:30 -
1 stop9h 25m
Deal found 2/11£599
Wed 9/1206:00 -
1 stop14h 25m
Sun 13/1210:38 -
2 stops17h 07m
Deal found 2/11£614
Sat 5/1206:15 -
2 stops16h 02m
Sun 13/1218:25 -
1 stop13h 10m
Deal found 29/10£614
Thu 24/1206:00 -
1 stop14h 25m
Wed 6/113:45 -
2 stops21h 00m
Deal found 30/10£620
Mon 30/1105:55 -
1 stop14h 30m
Sun 13/1216:25 -
1 stop11h 50m
Deal found 1/11£622
Sun 15/1106:50 -
2 stops18h 01m
Sun 15/1121:48 -
1 stop17h 32m
Deal found 30/10£632
Fri 20/1121:35 -
2 stops47h 55m
Fri 11/1220:10 -
1 stop31h 40m
Deal found 29/10£641
Mon 30/1118:40 -
1 stop27h 35m
Mon 7/1216:10 -
2 stops15h 30m
Deal found 2/11£660
Thu 11/212:10 -
1 stop13h 05m
Wed 17/220:40 -
Nonstop7h 45m
Deal found 31/10£668
Mon 7/1207:50 -
Nonstop9h 05m
Wed 23/1215:45 -
Nonstop8h 10m
Deal found 2/11£669
Fri 4/1208:20 -
1 stop16h 00m
Fri 11/1220:05 -
1 stop16h 25m
Deal found 3/11£694
Mon 7/1208:20 -
1 stop17h 39m
Wed 23/1212:00 -
1 stop18h 10m
Deal found 30/10£702
Wed 10/210:05 -
1 stop29h 55m
Wed 17/220:15 -
1 stop30h 55m
Deal found 31/10£801
Sat 27/215:35 -
2 stops31h 10m
Sat 13/319:10 -
2 stops15h 15m
Deal found 31/10£538
Sat 13/219:15 -
1 stop27h 30m
Tue 23/219:10 -
1 stop17h 25m
Deal found 1/11£543
Fri 4/1210:40 -
1 stop11h 35m
Fri 11/1210:38 -
2 stops17h 07m
Deal found 1/11£618
Mon 7/1209:30 -
1 stop16h 35m
Wed 23/1221:50 -
Nonstop8h 10m
Deal found 29/10£641
Tue 2/211:25 -
1 stop34h 05m
Sun 14/220:10 -
1 stop32h 30m
Deal found 30/10£641
Mon 1/311:35 -
1 stop11h 45m
Mon 8/315:55 -
1 stop10h 00m
Deal found 29/10£667
Sun 24/120:25 -
2 stops26h 20m
Thu 28/119:10 -
2 stops34h 35m
Deal found 2/11£559
Sat 14/1108:50 -
1 stop11h 20m
Fri 15/121:50 -
Nonstop7h 45m
Deal found 31/10£685
Thu 21/111:20 -
1 stop12h 00m
Mon 25/118:30 -
1 stop9h 50m
Deal found 1/11£685
Thu 10/1205:50 -
1 stop14h 35m
Fri 25/1218:45 -
1 stop20h 35m
Deal found 29/10£689
Wed 20/105:40 -
1 stop14h 45m
Wed 3/216:25 -
1 stop17h 40m
Deal found 29/10£692
Wed 2/1212:35 -
1 stop11h 45m
Wed 30/1215:55 -
1 stop14h 10m
Deal found 2/11£706
Tue 17/1110:40 -
1 stop34h 50m
Tue 1/1217:46 -
2 stops33h 39m
Deal found 29/10£671
Mon 7/1208:40 -
2 stops16h 05m
Wed 23/1209:59 -
1 stop15h 06m
Deal found 2/11£676
Mon 7/1213:30 -
1 stop12h 35m
Tue 22/1215:45 -
Nonstop8h 10m
Deal found 2/11£676
Sun 15/1108:40 -
2 stops15h 35m
Wed 25/1121:35 -
2 stops14h 15m
Deal found 31/10£759
Direct flights from United Kingdom to Illinois
Explore direct flight options from United Kingdom to Illinois based on user searches, and compare prices and availability for your desired travel dates. Data last updated 3 November 2026.
Fri 13/1115:40 -
Nonstop9h 05m
Wed 9/1221:50 -
Nonstop7h 45m
Deal found 30/10£519
Mon 16/1115:40 -
Nonstop9h 05m
Tue 8/1221:50 -
Nonstop7h 45m
Deal found 30/10£540
Fri 20/1115:40 -
Nonstop9h 05m
Mon 30/1121:50 -
Nonstop7h 45m
Deal found 1/11£550
Sun 15/1115:40 -
Nonstop9h 05m
Tue 8/1221:50 -
Nonstop7h 45m
Deal found 30/10£572
Wed 2/1215:40 -
Nonstop9h 05m
Tue 8/1221:50 -
Nonstop7h 45m
Deal found 29/10£591
Thu 11/211:00 -
Nonstop8h 45m
Sat 13/217:10 -
Nonstop7h 45m
Deal found 31/10£603
Mon 30/1111:00 -
Nonstop8h 45m
Fri 4/1221:50 -
Nonstop7h 45m
Deal found 1/11£606
Tue 1/1207:40 -
Nonstop9h 05m
Mon 7/1221:50 -
Nonstop8h 10m
Deal found 30/10£623
Wed 2/1215:40 -
Nonstop9h 05m
Tue 8/1220:30 -
Nonstop7h 55m
Deal found 1/11£623
Mon 7/1213:35 -
Nonstop9h 20m
Wed 23/1215:45 -
Nonstop8h 10m
Deal found 1/11£630
Mon 1/310:25 -
Nonstop9h 20m
Thu 11/315:45 -
Nonstop8h 10m
Deal found 30/10£632
Last-minute flights from United Kingdom to Illinois
Discover last-minute flight deals from United Kingdom to Illinois. Data last updated 3 November 2026 and is based on user searches.
Wed 11/1106:00 -
1 stop15h 30m
Sun 22/1120:10 -
1 stop20h 30m
Deal found 29/10£520
Thu 12/1107:15 -
2 stops16h 05m
Wed 18/1118:30 -
2 stops20h 45m
Deal found 29/10£518
Fri 13/1115:40 -
Nonstop9h 05m
Wed 9/1221:50 -
Nonstop7h 45m
Deal found 30/10£519
Wed 18/1108:00 -
2 stops15h 20m
Sun 22/1118:30 -
2 stops19h 10m
Deal found 31/10£521
Thu 19/1112:50 -
2 stops32h 40m
Wed 2/1219:00 -
2 stops17h 35m
Deal found 29/10£483
Thu 19/1111:25 -
1 stop34h 05m
Wed 2/1219:00 -
1 stop33h 40m
Deal found 29/10£519
Fri 20/1121:35 -
2 stops47h 55m
Sun 6/1220:10 -
1 stop13h 35m
Deal found 2/11£518
Sat 21/1113:10 -
2 stops33h 35m
Mon 30/1119:10 -
2 stops21h 20m
Deal found 1/11£509
Sun 22/1107:45 -
2 stops15h 35m
Thu 3/1218:30 -
2 stops20h 45m
Deal found 31/10£519
Mon 23/1107:00 -
2 stops16h 20m
Fri 27/1118:30 -
2 stops19h 00m
Deal found 31/10£520
Wed 2/1206:00 -
2 stops17h 20m
Wed 9/1218:30 -
2 stops16h 45m
Deal found 2/11£488
Wed 9/1208:35 -
2 stops14h 45m
Sun 13/1218:30 -
2 stops12h 50m
Deal found 2/11£508
One-way flights from United Kingdom to Illinois
Search for one-way flight options from United Kingdom to Illinois. Find affordable one-way fares based on user searches. Data last updated 3 November 2026.
Sun 24/108:50 -
2 stops40h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 2/11£286
Thu 10/1206:45 -
2 stops38h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/10£292
Fri 11/1216:50 -
2 stops52h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/10£293
Sat 16/121:05 -
3 stops44h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 2/11£295
Wed 17/317:10 -
2 stops30h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 30/10£295
Thu 19/1106:45 -
2 stops38h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 2/11£298
Tue 13/415:50 -
2 stops30h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 30/10£301
Sat 12/1215:10 -
3 stops30h 20m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/10£301
Thu 21/107:10 -
3 stops40h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 31/10£302
Tue 17/1118:35 -
2 stops28h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 2/11£303
Sat 21/1106:15 -
2 stops39h 15m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 31/10£304
Thu 18/308:00 -
2 stops15h 20m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 30/10£304
Find flight deals from United Kingdom to Illinois
Keep the following information in mind while searching for United Kingdom to Illinois flight deals. Data was last updated 3 November 2026.
Customise 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 7,457,451 searches. Data last updated 3 November 2026.
Use the filters below to find and compare flights from the United Kingdom to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest return flight
GlasgowChicago
GLA Glasgow Intl - ORD Chicago O'Hare Intl
GLAORD
Glasgow Intl
Sun 24/1
22:25-17:20
3 stops48h 55m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£298
GlasgowChicago
GLA Glasgow Intl - ORD Chicago O'Hare Intl
GLAORD
Glasgow Intl
Tue 13/4
15:50-16:00
2 stops30h 10m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£301
BirminghamChicago
BHX Birmingham - ORD Chicago O'Hare Intl
BHXORD
Birmingham
Thu 17/12
06:05-15:30
2 stops39h 25m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£314
ManchesterChicago
MAN Manchester - ORD Chicago O'Hare Intl
MANORD
Manchester
Wed 18/11
18:15-17:20
2 stops29h 05m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£315
ManchesterChicago
MAN Manchester - ORD Chicago O'Hare Intl
MANORD
Manchester
Thu 15/4
12:05-16:00
3 stops33h 55m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£317
GlasgowChicago
GLA Glasgow Intl - ORD Chicago O'Hare Intl
GLAORD
Glasgow Intl
Sat 16/1
10:35-17:20
2 stops36h 45m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£324
GlasgowChicago
GLA Glasgow Intl - ORD Chicago O'Hare Intl
GLAORD
Glasgow Intl
Wed 20/1
07:00-17:20
3 stops40h 20m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£324
ManchesterChicago
MAN Manchester - ORD Chicago O'Hare Intl
MANORD
Manchester
Tue 10/11
08:10-15:30
2 stops37h 20m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£325
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Wed 7/4
08:00-16:00
1 stop14h 00m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£415
LondonChicago
LGW London Gatwick - ORD Chicago O'Hare Intl
LGWORD
London Gatwick
Thu 15/4
10:40-16:00
1 stop35h 20m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£416
Flights are sorted by cheapest return flights first.
Deals found on 2/11
Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
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6
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.
LHR-ORD
MAN-ORD
BHX-ORD
EDI-ORD
LGW-ORD
Estimated return 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.
Cheapflights Insights
Everything you need to know about your flight from the United Kingdom to Illinois
GB0-USIL
LHR-ORD
MAN-ORD
BHX-ORD
EDI-ORD
What is the cheapest month to book a flight from United Kingdom to Illinois?
Currently, February is the cheapest month in which you can book a flight from United Kingdom to Illinois (average of £503). Flying from United Kingdom to Illinois in August is currently the most expensive (average of £803). 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 3 November 2026.
When flying from United Kingdom 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 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 3 November 2026.
The most flights from GB0 to USIL are scheduled on a Saturday (41 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (33 on average).
How far ahead should I book a flight from United Kingdom to Illinois?
Booking 55 days in advance of your planned departure date is, on average, the best time to get cheap flights from United Kingdom to Illinois. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
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 3 November 2026.
Read through reviews of airlines operating flights from the United Kingdom to Illinois, such as Scandinavian Airlines,Aer Lingus, andIcelandair. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
I was seated in premium economy and I didn’t feel the crew being attentive or a warm sense of hospitality, the plane was clean. The seats were comfortable.
I was seated in premium economy and I didn’t feel the crew being attentive or a warm sense of hospitality, the plane was clean. The seats were comfortable.
I was seated in premium economy and I didn’t feel the crew being attentive or a warm sense of hospitality, the plane was clean. The seats were comfortable.
I was seated in premium economy and I didn’t feel the crew being attentive or a warm sense of hospitality, the plane was clean. The seats were comfortable.
I was seated in premium economy and I didn’t feel the crew being attentive or a warm sense of hospitality, the plane was clean. The seats were comfortable.
I was seated in premium economy and I didn’t feel the crew being attentive or a warm sense of hospitality, the plane was clean. The seats were comfortable.
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.
How long is the flight from United Kingdom to Illinois?
A quick flight from United Kingdom to Illinois can take about 11h 25m. Scandinavian Airlines provides one of the quickest options available for as low as £599. The distance between United Kingdom and Illinois is about 3663 mi. Both multi-stop and direct flights can be found to your destination and back.
What are the cheapest airlines to fly from United Kingdom to Illinois one-way?
£210 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 United Airlines, with prices starting from £316 and £321, 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 holiday 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, February is the cheapest month in which you can book a flight from United Kingdom to Illinois (average of £503). Flying from United Kingdom to Illinois in August is currently the most expensive (average of £803). 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.
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 7,457,451 searches. Data last updated 3 November 2026.
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 United Kingdom to Illinois?
900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Illinois from United Kingdom today with Cheapflights!
Why should you use Cheapflights to find cheap flight tickets from United Kingdom to Illinois?
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 Illinois from United Kingdom.
Can Cheapflights find flights from United Kingdom to Illinois with no change fees?
Cheapflights does show flights with no change fees to all users. To see these options for flights from United Kingdom to Illinois, users can toggle the no change fees filter when performing a flight search.
Can Cheapflights notify me if prices for flights from United Kingdom to Illinois become cheaper?
Yes, Cheapflights offers price alerts on United Kingdom to Illinois 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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