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Cheap flights from London Luton Airport to Illinois from £342

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 17/5. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — ORD
1 Mar — 8 Mar1
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 30 January 2026.

Thu 26/214:10
LTN
-
ORD
2 stops32h 35m
Multiple Airlines
Sun 8/320:20
ORD
-
LTN
2 stops20h 40m
Multiple Airlines
Deal found 29/1£416
Thu 26/214:10
LTN
-
ORD
1 stop11h 05m
Multiple Airlines
Thu 5/321:00
ORD
-
LTN
1 stop10h 20m
Multiple Airlines
Deal found 29/1£441
Sat 7/212:25
LTN
-
ORD
1 stop12h 50m
Multiple Airlines
Sat 14/221:00
ORD
-
LTN
1 stop15h 15m
Multiple Airlines
Deal found 28/1£456
Tue 31/309:40
LTN
-
ORD
1 stop15h 35m
Multiple Airlines
Sat 4/415:45
ORD
-
LTN
1 stop10h 35m
Multiple Airlines
Deal found 28/1£478
Sat 28/212:25
LTN
-
ORD
1 stop12h 50m
Multiple Airlines
Sat 7/321:00
ORD
-
LTN
1 stop17h 15m
Multiple Airlines
Deal found 29/1£481
Mon 13/406:25
LTN
-
ORD
2 stops17h 25m
Multiple Airlines
Mon 4/515:45
ORD
-
LTN
1 stop11h 30m
Multiple Airlines
Deal found 28/1£487
Wed 29/407:15
LTN
-
ORD
2 stops16h 35m
Multiple Airlines
Wed 6/515:45
ORD
-
LTN
1 stop11h 15m
Multiple Airlines
Deal found 28/1£490
Wed 15/406:15
LTN
-
ORD
2 stops18h 00m
Multiple Airlines
Fri 1/519:25
ORD
-
LTN
2 stops21h 30m
Multiple Airlines
Deal found 29/1£505
Wed 18/1106:50
LTN
-
ORD
2 stops16h 30m
Multiple Airlines
Sun 22/1119:40
ORD
-
LTN
1 stop10h 05m
Multiple Airlines
Deal found 29/1£508
Tue 3/308:30
LTN
-
ORD
1 stop17h 30m
Multiple Airlines
Wed 11/322:55
ORD
-
LTN
1 stop14h 20m
Multiple Airlines
Deal found 30/1£508
Wed 6/519:55
LTN
-
STL
3 stops30h 10m
Multiple Airlines
Mon 10/812:10
STL
-
LTN
2 stops19h 35m
Multiple Airlines
Deal found 29/1£956
Sun 19/721:50
LTN
-
STL
3 stops27h 02m
Multiple Airlines
Sat 25/708:55
STL
-
LTN
3 stops23h 40m
Multiple Airlines
Deal found 28/1£1,197

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 30 January 2026.

Round-trip from

£416

One-way from

£342

Popular in

July

Cheapest in

February

Average price

£452
26/2-8/3
  • 26/2-8/3
  • 4 total stops
  • 53h 15m total
  • London to Illinois
Search Deals
17/5
  • 17/5
  • 3 total stops
  • 55h 29m total
  • London to Illinois
Search Deals
Highest demand for flights based on searches. 14% 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 January 2026
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 30 January 2026.
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 26/2

14:10-19:15

1 stop11h 05m

Chicago O'Hare Intl

Sun 8/3

20:40-16:45

1 stop15h 05m

£442

LondonChicago

LTN - ORD

LTNORD

London Luton

Mon 13/4

06:25-17:50

2 stops17h 25m

Chicago O'Hare Intl

Mon 4/5

15:45-09:15

1 stop11h 30m

£487

LondonChicago

LTN - ORD

LTNORD

London Luton

Wed 29/4

07:15-17:50

2 stops16h 35m

Chicago O'Hare Intl

Wed 6/5

15:45-09:00

1 stop11h 15m

£490

LondonChicago

LTN - ORD

LTNORD

London Luton

Wed 25/2

08:30-20:00

1 stop17h 30m

Chicago O'Hare Intl

Mon 2/3

21:55-18:15

1 stop14h 20m

£513

LondonChicago

LTN - ORD

LTNORD

London Luton

Thu 19/2

08:30-20:00

1 stop17h 30m

Chicago O'Hare Intl

Fri 6/3

21:55-18:15

1 stop14h 20m

£513

LondonChicago

LTN - ORD

LTNORD

London Luton

Mon 2/3

07:30-18:25

2 stops16h 55m

Chicago O'Hare Intl

Mon 16/3

19:50-21:35

1 stop20h 45m

£515

LondonChicago

LTN - ORD

LTNORD

London Luton

Thu 12/2

14:10-16:45

2 stops32h 35m

Chicago O'Hare Intl

Sun 15/2

19:10-22:00

2 stops20h 50m

£521

LondonChicago

LTN - ORD

LTNORD

London Luton

Fri 13/3

08:30-21:00

1 stop17h 30m

Chicago O'Hare Intl

Wed 18/3

22:55-18:15

1 stop14h 20m

£550

LondonChicago

LTN - ORD

LTNORD

London Luton

Sun 15/3

08:05-18:55

1 stop15h 50m

Chicago O'Hare Intl

Sun 22/3

16:50-08:55

1 stop11h 05m

£557

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Wed 6/5

19:55-20:05

3 stops30h 10m

Lambert-St Louis

Mon 10/8

12:10-13:45

2 stops19h 35m

£956

Flights are sorted by cheapest return flights first.

Deals found on 29/1

Showing 1-10 of 32 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

See prices for flight routes from nearby airports that may be better suited for you.
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