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Cheap flights from London Luton Airport to Illinois from £369

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 16/1. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — ORD
14 Dec — 21 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 14 November 2025.

Round-trip from

£416

One-way from

£369

Popular in

July

Cheapest in

February

Average price

£470
25/11-2/12
  • 25/11-2/12
  • 4 total stops
  • 33h 55m total
  • London to Illinois
Search Deals
16/1
  • 16/1
  • 3 total stops
  • 57h 44m 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 14 November 2025.

Thu 4/1209:00LTN - ORD
2 stops14h 20mMultiple Airlines
Wed 10/1218:30ORD - LTN
2 stops22h 35mMultiple Airlines
Deal found 13/11£419
Thu 4/1206:50LTN - ORD
2 stops17h 05mMultiple Airlines
Thu 11/1215:50ORD - LTN
2 stops25h 10mMultiple Airlines
Deal found 12/11£427
Sat 6/1206:00LTN - ORD
1 stop14h 00mMultiple Airlines
Tue 9/1215:50ORD - LTN
1 stop11h 55mMultiple Airlines
Deal found 13/11£429
Wed 3/1206:50LTN - ORD
1 stop13h 10mMultiple Airlines
Wed 10/1215:50ORD - LTN
1 stop10h 45mMultiple Airlines
Deal found 12/11£435
Wed 26/1106:50LTN - ORD
1 stop13h 10mMultiple Airlines
Sun 30/1119:40ORD - LTN
1 stop10h 05mMultiple Airlines
Deal found 13/11£438
Wed 10/1206:50LTN - ORD
1 stop17h 05mMultiple Airlines
Wed 17/1215:50ORD - LTN
1 stop10h 45mMultiple Airlines
Deal found 12/11£441
Thu 4/1209:00LTN - ORD
1 stop11h 00mMultiple Airlines
Sun 7/1219:40ORD - LTN
1 stop10h 05mMultiple Airlines
Deal found 12/11£467
Tue 2/1206:50LTN - ORD
2 stops17h 05mMultiple Airlines
Sun 7/1215:50ORD - LTN
2 stops24h 40mMultiple Airlines
Deal found 13/11£481
Tue 25/1109:00LTN - ORD
2 stops14h 20mMultiple Airlines
Fri 28/1118:30ORD - LTN
2 stops14h 55mMultiple Airlines
Deal found 13/11£489
Fri 12/1205:50LTN - ORD
1 stop18h 05mMultiple Airlines
Mon 29/1215:50ORD - LTN
1 stop10h 45mMultiple Airlines
Deal found 12/11£511
Thu 20/1109:00LTN - ORD
1 stop14h 55mMultiple Airlines
Thu 27/1115:50ORD - LTN
1 stop18h 10mMultiple Airlines
Deal found 12/11£524
Tue 30/1221:50LTN - STL
2 stops22h 05mMultiple Airlines
Thu 1/105:30STL - LTN
3 stops26h 35mMultiple Airlines
Deal found 13/11£1,495

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 14 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

Thu 4/12

06:50-17:55

2 stops17h 05m

Chicago O'Hare Intl

Thu 11/12

15:50-23:00

2 stops25h 10m

£427

LondonChicago

LTN - ORD

LTNORD

London Luton

Wed 3/12

06:50-14:00

1 stop13h 10m

Chicago O'Hare Intl

Wed 10/12

15:50-08:35

1 stop10h 45m

£435

LondonChicago

LTN - ORD

LTNORD

London Luton

Mon 2/3

06:15-14:55

1 stop14h 40m

Chicago O'Hare Intl

Mon 9/3

18:40-12:15

1 stop12h 35m

£454

LondonChicago

LTN - ORD

LTNORD

London Luton

Fri 16/1

07:00-17:20

2 stops16h 20m

Chicago O'Hare Intl

Sun 18/1

18:30-14:35

2 stops14h 05m

£470

LondonChicago

LTN - ORD

LTNORD

London Luton

Tue 2/12

06:50-17:55

2 stops17h 05m

Chicago O'Hare Intl

Sun 7/12

15:50-22:30

2 stops24h 40m

£481

LondonChicago

LTN - ORD

LTNORD

London Luton

Sat 7/2

12:40-16:55

2 stops34h 15m

Chicago O'Hare Intl

Sat 14/2

19:20-22:15

2 stops20h 55m

£524

LondonChicago

LTN - ORD

LTNORD

London Luton

Fri 16/1

07:00-16:45

2 stops15h 45m

Chicago O'Hare Intl

Mon 19/1

19:20-21:50

3 stops20h 30m

£537

LondonChicago

LTN - ORD

LTNORD

London Luton

Mon 2/3

14:15-20:00

2 stops35h 45m

Chicago O'Hare Intl

Fri 6/3

21:55-21:25

2 stops17h 30m

£559

LondonChicago

LTN - ORD

LTNORD

London Luton

Mon 30/3

06:25-17:50

2 stops17h 25m

Chicago O'Hare Intl

Sun 12/4

15:45-07:50

1 stop10h 05m

£559

LondonChicago

LTN - ORD

LTNORD

London Luton

Tue 2/12

20:00-14:00

2 stops24h 00m

Chicago O'Hare Intl

Mon 8/12

15:50-12:00

2 stops14h 10m

£566

Flights are sorted by cheapest return flights first.

Deals found on 13/11

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 14 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

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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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