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Cheap flights from London Luton Airport to Illinois from £331

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 18/4. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — ORD
12 Mar — 19 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 10 February 2026.

Thu 12/314:10
LTN
-
ORD
2 stops32h 45m
Multiple Airlines
Wed 18/320:20
ORD
-
LTN
2 stops21h 45m
Multiple Airlines
Deal found 8/2£446
Thu 9/413:00
LTN
-
ORD
3 stops33h 10m
Multiple Airlines
Mon 13/419:15
ORD
-
LTN
2 stops21h 35m
Multiple Airlines
Deal found 9/2£463
Tue 7/409:40
LTN
-
ORD
2 stops14h 35m
Multiple Airlines
Sun 12/419:25
ORD
-
LTN
2 stops20h 15m
Multiple Airlines
Deal found 9/2£471
Wed 8/406:15
LTN
-
ORD
2 stops18h 00m
Multiple Airlines
Wed 15/419:25
ORD
-
LTN
2 stops19h 50m
Multiple Airlines
Deal found 7/2£473
Fri 20/213:05
LTN
-
ORD
2 stops33h 40m
Multiple Airlines
Sun 22/219:10
ORD
-
LTN
2 stops20h 50m
Multiple Airlines
Deal found 7/2£474
Wed 25/306:50
LTN
-
ORD
2 stops16h 30m
Multiple Airlines
Wed 1/419:25
ORD
-
LTN
2 stops19h 50m
Multiple Airlines
Deal found 8/2£482
Fri 10/415:15
LTN
-
ORD
2 stops36h 00m
Multiple Airlines
Fri 8/519:25
ORD
-
LTN
2 stops21h 30m
Multiple Airlines
Deal found 6/2£486
Mon 4/506:25
LTN
-
ORD
2 stops17h 25m
Multiple Airlines
Mon 11/515:45
ORD
-
LTN
1 stop11h 30m
Multiple Airlines
Deal found 9/2£495
Mon 4/506:25
LTN
-
ORD
2 stops17h 25m
Multiple Airlines
Sun 10/521:00
ORD
-
LTN
1 stop10h 25m
Multiple Airlines
Deal found 8/2£498
Mon 2/307:15
LTN
-
ORD
1 stop18h 40m
Multiple Airlines
Wed 11/322:55
ORD
-
LTN
2 stops15h 55m
Multiple Airlines
Deal found 7/2£511
Sun 3/509:05
LTN
-
STL
3 stops18h 47m
Multiple Airlines
Sun 17/513:00
STL
-
LTN
2 stops20h 25m
Multiple Airlines
Deal found 8/2£766
Fri 22/506:20
LTN
-
STL
2 stops19h 44m
Multiple Airlines
Thu 20/808:55
STL
-
LTN
2 stops22h 50m
Multiple Airlines
Deal found 7/2£915

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 10 February 2026.

Round-trip from

£446

One-way from

£331

Popular in

July

Cheapest in

September

Average price

£435
12/3-18/3
  • 12/3-18/3
  • 4 total stops
  • 54h 30m total
  • London to Illinois
Search Deals
18/4
  • 18/4
  • 3 total stops
  • 55h 29m total
  • London to Illinois
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£57 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 February 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 10 February 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

Tue 7/4

09:40-18:15

2 stops14h 35m

Chicago O'Hare Intl

Sun 12/4

19:25-21:40

2 stops20h 15m

£471

LondonChicago

LTN - ORD

LTNORD

London Luton

Wed 8/4

06:15-18:15

2 stops18h 00m

Chicago O'Hare Intl

Wed 15/4

19:25-21:15

2 stops19h 50m

£473

LondonChicago

LTN - ORD

LTNORD

London Luton

Fri 10/4

15:15-21:15

2 stops36h 00m

Chicago O'Hare Intl

Fri 8/5

19:25-22:55

2 stops21h 30m

£486

LondonChicago

LTN - ORD

LTNORD

London Luton

Mon 16/3

08:25-20:55

1 stop17h 30m

Chicago O'Hare Intl

Mon 30/3

21:50-01:10

2 stops21h 20m

£514

LondonChicago

LTN - ORD

LTNORD

London Luton

Sat 7/3

08:30-20:00

1 stop17h 30m

Chicago O'Hare Intl

Tue 17/3

22:55-18:00

1 stop14h 05m

£516

LondonChicago

LTN - ORD

LTNORD

London Luton

Mon 9/3

06:00-15:00

1 stop14h 00m

Chicago O'Hare Intl

Mon 23/3

16:50-08:35

1 stop10h 45m

£521

LondonChicago

LTN - ORD

LTNORD

London Luton

Fri 6/3

08:30-20:00

1 stop17h 30m

Chicago O'Hare Intl

Wed 11/3

22:55-18:15

1 stop14h 20m

£529

LondonChicago

LTN - ORD

LTNORD

London Luton

Wed 25/2

06:50-19:15

1 stop18h 25m

Chicago O'Hare Intl

Sun 1/3

15:50-08:55

1 stop11h 05m

£540

LondonChicago

LTN - ORD

LTNORD

London Luton

Thu 26/2

06:05-14:55

1 stop14h 50m

Chicago O'Hare Intl

Sun 1/3

17:40-12:00

1 stop12h 20m

£540

LondonChicago

LTN - ORD

LTNORD

London Luton

Thu 7/5

21:40-18:15

2 stops26h 35m

Chicago O'Hare Intl

Mon 18/5

15:45-09:15

1 stop11h 30m

£549

Flights are sorted by cheapest return flights first.

Deals found on 8/2

Showing 1-10 of 42 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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Fly with Cheapflights

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How does Cheapflights help users find flights from Luton to Illinois?

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