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Cheap flights from London Luton Airport to Illinois from £304

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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — ORD
21 Feb — 28 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 22 January 2026.

Thu 29/109:00
LTN
-
ORD
1 stop16h 15m
Multiple Airlines
Wed 11/221:00
ORD
-
LTN
1 stop20h 05m
Multiple Airlines
Deal found 21/1£441
Thu 5/214:10
LTN
-
ORD
2 stops32h 35m
Multiple Airlines
Sun 8/219:10
ORD
-
LTN
2 stops20h 50m
Multiple Airlines
Deal found 22/1£444
Thu 5/306:05
LTN
-
ORD
1 stop14h 50m
Multiple Airlines
Mon 9/318:40
ORD
-
LTN
1 stop12h 35m
Multiple Airlines
Deal found 20/1£447
Tue 3/209:00
LTN
-
ORD
2 stops14h 20m
Multiple Airlines
Fri 6/218:30
ORD
-
LTN
2 stops14h 55m
Multiple Airlines
Deal found 20/1£456
Tue 17/209:00
LTN
-
ORD
1 stop16h 15m
Multiple Airlines
Tue 24/221:00
ORD
-
LTN
1 stop17h 05m
Multiple Airlines
Deal found 20/1£458
Sat 7/221:00
LTN
-
ORD
2 stops25h 55m
Multiple Airlines
Wed 11/219:20
ORD
-
LTN
2 stops21h 45m
Multiple Airlines
Deal found 20/1£461
Mon 13/406:25
LTN
-
ORD
2 stops17h 25m
Multiple Airlines
Mon 20/415:45
ORD
-
LTN
1 stop15h 00m
Multiple Airlines
Deal found 20/1£464
Sat 14/206:00
LTN
-
ORD
1 stop19h 15m
Multiple Airlines
Fri 20/221:00
ORD
-
LTN
1 stop13h 15m
Multiple Airlines
Deal found 21/1£466
Wed 6/506:15
LTN
-
STL
3 stops19h 49m
Multiple Airlines
Sat 9/513:00
STL
-
LTN
3 stops24h 55m
Multiple Airlines
Deal found 20/1£678
Mon 8/621:50
LTN
-
STL
3 stops27h 02m
Multiple Airlines
Mon 22/613:15
STL
-
LTN
2 stops18h 30m
Multiple Airlines
Deal found 20/1£1,017
Mon 27/719:55
LTN
-
STL
3 stops24h 07m
Multiple Airlines
Wed 26/812:10
STL
-
LTN
2 stops21h 15m
Multiple Airlines
Deal found 20/1£1,118
Wed 1/408:55
LTN
-
STL
3 stops20h 07m
Multiple Airlines
Mon 13/416:05
STL
-
LTN
2 stops14h 40m
Multiple Airlines
Deal found 20/1£1,120

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 22 January 2026.

Round-trip from

£447

One-way from

£304

Popular in

July

Cheapest in

February

Average price

£465
5/3-9/3
  • 5/3-9/3
  • 2 total stops
  • 27h 25m total
  • London to Illinois
Search Deals
7/4
  • 7/4
  • 3 total stops
  • 49h 45m total
  • London to Illinois
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£65 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 22 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

Tue 3/2

09:00-17:20

2 stops14h 20m

Chicago O'Hare Intl

Fri 6/2

18:30-15:25

2 stops14h 55m

£456

LondonChicago

LTN - ORD

LTNORD

London Luton

Sat 7/2

21:00-16:55

2 stops25h 55m

Chicago O'Hare Intl

Wed 11/2

19:20-23:05

2 stops21h 45m

£461

LondonChicago

LTN - ORD

LTNORD

London Luton

Sat 14/2

06:00-19:15

1 stop19h 15m

Chicago O'Hare Intl

Fri 20/2

21:00-16:15

1 stop13h 15m

£466

LondonChicago

LTN - ORD

LTNORD

London Luton

Mon 13/4

06:25-17:50

2 stops17h 25m

Chicago O'Hare Intl

Sun 19/4

21:00-13:25

1 stop10h 25m

£468

LondonChicago

LTN - ORD

LTNORD

London Luton

Mon 13/4

06:25-17:50

2 stops17h 25m

Chicago O'Hare Intl

Tue 21/4

21:00-13:25

1 stop10h 25m

£468

LondonChicago

LTN - ORD

LTNORD

London Luton

Mon 27/4

13:00-13:00

2 stops30h 00m

Chicago O'Hare Intl

Tue 5/5

15:45-09:15

1 stop11h 30m

£468

LondonChicago

LTN - ORD

LTNORD

London Luton

Mon 13/4

06:25-17:50

2 stops17h 25m

Chicago O'Hare Intl

Wed 22/4

15:45-09:00

1 stop11h 15m

£468

LondonChicago

LTN - ORD

LTNORD

London Luton

Thu 5/2

09:00-19:15

1 stop16h 15m

Chicago O'Hare Intl

Sat 7/2

21:00-16:05

1 stop13h 05m

£479

LondonChicago

LTN - ORD

LTNORD

London Luton

Thu 16/4

09:25-18:15

2 stops14h 50m

Chicago O'Hare Intl

Sun 19/4

21:00-13:25

1 stop10h 25m

£488

LondonChicago

LTN - ORD

LTNORD

London Luton

Tue 14/4

09:40-18:15

2 stops14h 35m

Chicago O'Hare Intl

Sun 19/4

21:00-13:25

1 stop10h 25m

£488

Flights are sorted by cheapest return flights first.

Deals found on 21/1

Showing 1-10 of 41 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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