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Cheap flights from London Luton Airport to Illinois from £377

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 16/12. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — ORD
8 Dec — 15 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Luton to Illinois

Keep the following information in mind while searching for Luton to Illinois flight deals. Data was last updated 8 November 2025.

Round-trip from

£409

One-way from

£377

Popular in

July

Cheapest in

February

Average price

£489
10/12-17/12
  • 10/12-17/12
  • 4 total stops
  • 33h 05m total
  • London to Illinois
Search Deals
16/12
  • 16/12
  • 3 total stops
  • 46h 13m total
  • London to Illinois
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£62 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find flight deals from Luton to Illinois

Enter your travel dates to find the best prices.

Cheapest flights from Luton to Illinois
Explore the most affordable flight options available from Luton to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 November 2025.

Wed 10/1206:50LTN - ORD
2 stops16h 30mMultiple Airlines
Wed 17/1218:30ORD - LTN
2 stops16h 35mMultiple Airlines
Deal found 8/11£409
Tue 25/1109:00LTN - ORD
2 stops14h 20mMultiple Airlines
Tue 2/1218:30ORD - LTN
2 stops19h 35mMultiple Airlines
Deal found 8/11£419
Mon 24/1106:00LTN - ORD
1 stop17h 55mMultiple Airlines
Mon 8/1215:50ORD - LTN
1 stop10h 45mMultiple Airlines
Deal found 7/11£423
Sun 23/1108:05LTN - ORD
1 stop11h 55mMultiple Airlines
Sun 30/1115:50ORD - LTN
1 stop11h 05mMultiple Airlines
Deal found 7/11£429
Fri 12/1205:50LTN - ORD
1 stop14h 10mMultiple Airlines
Mon 15/1215:50ORD - LTN
1 stop10h 45mMultiple Airlines
Deal found 7/11£431
Fri 21/1105:50LTN - ORD
1 stop18h 05mMultiple Airlines
Mon 24/1115:50ORD - LTN
1 stop10h 45mMultiple Airlines
Deal found 8/11£448
Mon 24/1106:00LTN - ORD
1 stop14h 00mMultiple Airlines
Mon 1/1215:50ORD - LTN
1 stop10h 45mMultiple Airlines
Deal found 7/11£456
Tue 2/1209:00LTN - ORD
1 stop14h 55mMultiple Airlines
Tue 9/1215:50ORD - LTN
1 stop11h 55mMultiple Airlines
Deal found 8/11£457
Thu 13/1119:20LTN - STL
3 stops29h 56mMultiple Airlines
Sun 16/1115:50STL - LTN
2 stops16h 25mMultiple Airlines
Deal found 7/11£1,063
Mon 22/1210:25LTN - STL
3 stops35h 04mMultiple Airlines
Mon 29/1216:05STL - LTN
2 stops21h 25mMultiple Airlines
Deal found 7/11£1,495
Tue 11/1114:00LTN - STL
2 stops29h 55mMultiple Airlines
Wed 17/1216:05STL - LTN
3 stops20h 35mMultiple Airlines
Deal found 6/11£1,597
Wed 12/1105:50LTN - STL
3 stops24h 06mMultiple Airlines
Wed 17/1216:05STL - LTN
3 stops20h 35mMultiple Airlines
Deal found 6/11£1,837

Cheapflights Fare Finder

 
Customise your flight search to find flights from Luton 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 858,174 searches. Data last updated 8 November 2025.
Use the filters below to find and compare flights from London Luton Airport to Illinois that are best for you.

Fly from

Luton

Fly to

Illinois

Route

Depart

Return

Price

LondonChicago

LTN - ORD

LTNORD

London Luton

Wed 10/12

06:50-17:20

2 stops16h 30m

Chicago O'Hare Intl

Wed 17/12

18:30-17:05

2 stops16h 35m

£409

LondonChicago

LTN - ORD

LTNORD

London Luton

Mon 24/11

06:00-14:00

1 stop14h 00m

Chicago O'Hare Intl

Fri 28/11

15:50-16:15

1 stop18h 25m

£425

LondonChicago

LTN - ORD

LTNORD

London Luton

Mon 24/11

06:25-17:55

2 stops17h 30m

Chicago O'Hare Intl

Mon 8/12

15:50-22:20

2 stops24h 30m

£425

LondonChicago

LTN - ORD

LTNORD

London Luton

Mon 24/11

06:00-14:00

1 stop14h 00m

Chicago O'Hare Intl

Mon 1/12

15:50-08:35

1 stop10h 45m

£425

LondonChicago

LTN - ORD

LTNORD

London Luton

Sun 23/11

08:05-14:00

1 stop11h 55m

Chicago O'Hare Intl

Sun 30/11

15:50-08:55

1 stop11h 05m

£429

LondonChicago

LTN - ORD

LTNORD

London Luton

Fri 16/1

05:50-19:15

1 stop19h 25m

Chicago O'Hare Intl

Sun 18/1

21:00-22:00

1 stop19h 00m

£459

LondonChicago

LTN - ORD

LTNORD

London Luton

Sun 1/3

13:10-19:15

1 stop12h 05m

Chicago O'Hare Intl

Sun 8/3

16:50-08:55

1 stop11h 05m

£461

LondonChicago

LTN - ORD

LTNORD

London Luton

Sun 14/12

08:05-14:00

1 stop11h 55m

Chicago O'Hare Intl

Tue 30/12

15:50-09:45

1 stop11h 55m

£510

LondonChicago

LTN - ORD

LTNORD

London Luton

Sat 22/11

12:25-17:55

1 stop11h 30m

Chicago O'Hare Intl

Sat 29/11

19:40-16:05

1 stop14h 25m

£513

LondonChicago

LTN - ORD

LTNORD

London Luton

Fri 12/12

07:00-17:20

2 stops16h 20m

Chicago O'Hare Intl

Sun 14/12

18:30-14:35

2 stops14h 05m

£514

Flights are sorted by cheapest return flights first.

Deals found on 8/11

Showing 1-10 of 33 results
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Best time to book a flight from Luton to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Luton with our price prediction graph.
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 London Luton Airport to Illinois

What is the cheapest time of day to fly from LTN to IL?

Find hourly flight availability from Luton 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 8 November 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 23% on flights from London Luton Airport to Illinois by exploring options for tickets at midday.

Related info for your journey

Find useful and relevant information for your journey from Luton to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Luton 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.

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Luton to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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How does Cheapflights help users find flights from Luton to Illinois?

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Yes! Start tracking prices for Luton to Illinois flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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