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Cheap flights from London Luton Airport to Illinois from £320

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 21/9. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — ORD
10 Aug — 17 Aug1
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 11 July 2026.

Sat 21/1111:05
LTN
-
ORD
1 stop13h 20m
Multiple Airlines
Sat 28/1115:55
ORD
-
LTN
1 stop10h 10m
Multiple Airlines
Deal found 6/7£517
Mon 31/812:45
LTN
-
ORD
2 stops33h 25m
Multiple Airlines
Mon 14/919:15
ORD
-
LTN
3 stops21h 45m
Multiple Airlines
Deal found 8/7£518
Sun 6/911:00
LTN
-
ORD
1 stop14h 15m
Multiple Airlines
Sun 13/915:45
ORD
-
LTN
1 stop15h 40m
Multiple Airlines
Deal found 7/7£519
Wed 26/806:15
LTN
-
ORD
3 stops19h 50m
Multiple Airlines
Mon 31/822:25
ORD
-
LTN
2 stops17h 40m
Multiple Airlines
Deal found 8/7£522
Mon 31/808:15
LTN
-
ORD
1 stop11h 45m
Multiple Airlines
Tue 8/921:00
ORD
-
LTN
1 stop10h 25m
Multiple Airlines
Deal found 9/7£523
Wed 2/906:15
LTN
-
ORD
1 stop13h 45m
Multiple Airlines
Wed 9/915:45
ORD
-
LTN
1 stop17h 40m
Multiple Airlines
Deal found 8/7£525
Fri 18/912:45
LTN
-
ORD
2 stops33h 20m
Multiple Airlines
Thu 24/918:00
ORD
-
LTN
2 stops24h 50m
Multiple Airlines
Deal found 6/7£525
Wed 26/806:10
LTN
-
ORD
2 stops21h 15m
Multiple Airlines
Sat 29/819:25
ORD
-
LTN
2 stops20h 50m
Multiple Airlines
Deal found 7/7£526
Wed 16/906:15
LTN
-
ORD
1 stop13h 45m
Multiple Airlines
Mon 21/915:45
ORD
-
LTN
1 stop11h 30m
Multiple Airlines
Deal found 9/7£528
Wed 9/913:50
LTN
-
ORD
2 stops32h 20m
Multiple Airlines
Sun 27/919:15
ORD
-
LTN
2 stops20h 25m
Multiple Airlines
Deal found 9/7£529
Sun 23/819:00
LTN
-
ORD
2 stops32h 25m
Multiple Airlines
Sun 30/819:25
ORD
-
LTN
2 stops15h 50m
Multiple Airlines
Deal found 9/7£530
Fri 21/808:30
LTN
-
STL
3 stops35h 34m
Multiple Airlines
Fri 28/815:30
STL
-
LTN
2 stops21h 45m
Multiple Airlines
Deal found 7/7£760

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 11 July 2026.

Round-trip from

£517

One-way from

£320

Popular in

July

Cheapest in

February

Average price

£692
21/11-28/11
  • 21/11-28/11
  • 2 total stops
  • 23h 30m total
  • London to Illinois
Search Deals
21/9
  • 21/9
  • 3 total stops
  • 32h 15m total
  • London to Illinois
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£78 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 July 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 11 July 2026.
Use the filters below to find and compare flights from London Luton Airport to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonChicago

LTN - ORD

LTNORD

London Luton

Sun 20/9

11:00-16:10

2 stops35h 10m

Chicago O'Hare Intl

Sun 27/9

19:15-21:40

2 stops20h 25m

£529

LondonChicago

LTN - ORD

LTNORD

London Luton

Tue 25/8

15:15-18:15

2 stops33h 00m

Chicago O'Hare Intl

Fri 18/9

15:45-16:20

2 stops18h 35m

£535

LondonChicago

LTN - ORD

LTNORD

London Luton

Thu 27/8

09:25-19:15

1 stop15h 50m

Chicago O'Hare Intl

Sat 29/8

15:45-08:20

1 stop10h 35m

£537

LondonChicago

LTN - ORD

LTNORD

London Luton

Sun 23/8

06:45-21:25

2 stops20h 40m

Chicago O'Hare Intl

Sun 30/8

19:25-21:40

2 stops20h 15m

£540

LondonChicago

LTN - ORD

LTNORD

London Luton

Tue 25/8

15:15-18:15

2 stops33h 00m

Chicago O'Hare Intl

Tue 1/9

09:50-15:30

3 stops23h 40m

£554
Fastest return journey

LondonChicago

LTN - ORD

LTNORD

London Luton

Wed 2/9

13:50-19:15

1 stop11h 25m

Chicago O'Hare Intl

Sat 5/9

15:45-08:20

1 stop10h 35m

£556

LondonChicago

LTN - ORD

LTNORD

London Luton

Tue 15/9

15:15-18:15

2 stops33h 00m

Chicago O'Hare Intl

Thu 24/9

09:50-13:35

3 stops21h 45m

£557

LondonChicago

LTN - ORD

LTNORD

London Luton

Wed 26/8

06:15-16:57

2 stops16h 42m

Chicago O'Hare Intl

Fri 18/9

15:40-14:00

3 stops16h 20m

£625

LondonChicago

LTN - ORD

LTNORD

London Luton

Tue 25/8

13:10-16:57

2 stops33h 47m

Chicago O'Hare Intl

Thu 17/9

15:45-12:25

2 stops14h 40m

£627

LondonChicago

LTN - ORD

LTNORD

London Luton

Wed 26/8

06:15-16:57

2 stops16h 42m

Chicago O'Hare Intl

Thu 17/9

15:45-12:25

2 stops14h 40m

£627

Flights are sorted by cheapest return flights first.

Deals found on 10/7

Showing 1-10 of 43 resultsSorted by cheapest first
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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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