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Cheap flights from London Luton Airport to Illinois from £378

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 20/1. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — ORD
25 Jan — 1 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap 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 26 December 2025.

Fri 26/1220:55LTN - ORD
2 stops24h 15mMultiple Airlines
Sat 3/116:25ORD - LTN
2 stops21h 50mMultiple Airlines
Deal found 25/12£787
Tue 30/1221:55LTN - ORD
2 stops28h 05mMultiple Airlines
Tue 13/121:55ORD - LTN
2 stops17h 20mMultiple Airlines
Deal found 24/12£832
Wed 24/1219:30LTN - ORD
2 stops30h 30mMultiple Airlines
Sat 31/118:30ORD - LTN
2 stops19h 55mMultiple Airlines
Deal found 24/12£862
Sat 27/1212:25LTN - ORD
1 stop11h 30mMultiple Airlines
Tue 30/1215:50ORD - LTN
1 stop11h 55mMultiple Airlines
Deal found 24/12£878
Sun 28/1208:05LTN - ORD
1 stop15h 50mMultiple Airlines
Tue 30/1215:50ORD - LTN
1 stop11h 55mMultiple Airlines
Deal found 24/12£1,028
Sat 27/1206:00LTN - ORD
1 stop14h 00mMultiple Airlines
Sat 27/1216:20ORD - LTN
2 stops16h 30mMultiple Airlines
Deal found 25/12£1,048
Thu 25/1208:30LTN - ORD
1 stop17h 30mMultiple Airlines
Wed 31/1221:55ORD - LTN
1 stop14h 20mMultiple Airlines
Deal found 24/12£1,122
Thu 25/1221:40LTN - ORD
2 stops23h 45mMultiple Airlines
Sat 3/119:40ORD - LTN
1 stop14h 25mMultiple Airlines
Deal found 24/12£1,215
Fri 26/1210:25LTN - ORD
1 stop13h 30mMultiple Airlines
Fri 2/115:55ORD - LTN
2 stops18h 20mMultiple Airlines
Deal found 24/12£1,314
Wed 24/1218:55LTN - STL
3 stops27h 32mMultiple Airlines
Sat 31/116:05STL - LTN
3 stops21h 20mMultiple Airlines
Deal found 24/12£1,715
Thu 25/1219:25LTN - STL
2 stops24h 30mMultiple Airlines
Sat 31/116:05STL - LTN
3 stops25h 10mMultiple Airlines
Deal found 25/12£1,873

Find flight deals from Luton to Illinois

Keep the following information in mind while searching for Luton to Illinois flight deals. Data was last updated 26 December 2025.

Round-trip from

£451

One-way from

£378

Popular in

July

Cheapest in

February

Average price

£591
15/1-21/1
  • 15/1-21/1
  • 2 total stops
  • 25h 10m total
  • London to Illinois
Search Deals
20/1
  • 20/1
  • 3 total stops
  • 56h 31m total
  • London to Illinois
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£60 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 26 December 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 15/1

09:00-19:15

1 stop16h 15m

Chicago O'Hare Intl

Wed 21/1

21:00-17:05

1 stop14h 05m

£451

LondonChicago

LTN - ORD

LTNORD

London Luton

Thu 22/1

06:00-17:20

1 stop17h 20m

Chicago O'Hare Intl

Wed 28/1

18:30-12:55

1 stop12h 25m

£491

LondonChicago

LTN - ORD

LTNORD

London Luton

Mon 23/3

06:00-18:20

2 stops17h 20m

Chicago O'Hare Intl

Sun 29/3

15:45-07:50

1 stop10h 05m

£507

LondonChicago

LTN - ORD

LTNORD

London Luton

Sat 28/2

12:25-19:15

1 stop12h 50m

Chicago O'Hare Intl

Sat 7/3

21:00-18:15

1 stop15h 15m

£519

LondonChicago

LTN - ORD

LTNORD

London Luton

Sun 8/2

13:10-19:15

1 stop12h 05m

Chicago O'Hare Intl

Sun 15/2

21:00-16:45

1 stop13h 45m

£521

LondonChicago

LTN - ORD

LTNORD

London Luton

Sat 7/2

08:30-20:00

1 stop17h 30m

Chicago O'Hare Intl

Sat 14/2

21:55-18:15

1 stop14h 20m

£532

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Tue 5/5

15:15-20:04

3 stops34h 49m

Lambert-St Louis

Sun 10/5

13:00-19:25

3 stops24h 25m

£981

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Tue 5/5

15:15-20:04

3 stops34h 49m

Lambert-St Louis

Fri 8/5

15:30-19:25

2 stops21h 55m

£1,060

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Tue 20/1

18:35-21:06

3 stops56h 31m

£378

LondonChicago

LTN - ORD

LTNORD

London Luton

Mon 23/3

15:30-18:20

1 stop31h 50m

£386

Flights are sorted by cheapest return flights first.

Deals found on 24/12

Showing 1-10 of 24 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
No data available for this route at this time. Please check back soon.

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.

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Alternative routes for Luton to Illinois

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