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Cheap flights from London Luton Airport to Illinois from £417

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 27/9. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — ORD
20 Aug — 27 Aug1
1 adult

Cheap flight deals from Luton to Illinois

Keep the following information in mind while searching for Luton to Illinois flight deals. Data was last updated 15 August 2025.

Round-trip from

£423

One-way from

£417

Popular in

July

Cheapest in

February

Average price

£622
5/9-8/9
  • 5/9-8/9
  • 2 total stops
  • 24h 45m total
  • London to Illinois
Search Deals
27/9
  • 27/9
  • 2 total stops
  • 19h 05m 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 August 2025
Search Deals

Find flight deals from Luton to Illinois

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 15 August 2025.

Fri 5/911:30LTN - ORD
1 stop13h 30mMultiple Airlines
Mon 8/915:45ORD - LTN
1 stop11h 15mMultiple Airlines
Deal found 13/8£423
Sat 6/908:40LTN - ORD
1 stop16h 20mMultiple Airlines
Sat 13/915:45ORD - LTN
1 stop11h 45mMultiple Airlines
Deal found 13/8£431
Sat 1/1121:00LTN - ORD
2 stops24h 00mMultiple Airlines
Wed 5/1119:10ORD - LTN
2 stops21h 10mMultiple Airlines
Deal found 14/8£438
Wed 10/910:00LTN - ORD
2 stops35h 55mMultiple Airlines
Wed 17/910:40ORD - LTN
2 stops22h 45mMultiple Airlines
Deal found 13/8£439
Fri 12/911:30LTN - ORD
1 stop13h 30mMultiple Airlines
Fri 19/921:15ORD - LTN
1 stop12h 30mMultiple Airlines
Deal found 13/8£443
Thu 4/912:35LTN - ORD
2 stops33h 35mMultiple Airlines
Mon 8/911:13ORD - LTN
3 stops22h 47mMultiple Airlines
Deal found 14/8£452
Mon 22/912:50LTN - ORD
2 stops33h 05mMultiple Airlines
Sun 28/915:35ORD - LTN
2 stops21h 50mMultiple Airlines
Deal found 13/8£457
Sun 5/1009:55LTN - ORD
1 stop15h 05mMultiple Airlines
Sun 12/1021:15ORD - LTN
1 stop18h 15mMultiple Airlines
Deal found 13/8£466
Sat 27/908:40LTN - ORD
1 stop11h 20mMultiple Airlines
Sat 4/1015:45ORD - LTN
1 stop11h 45mMultiple Airlines
Deal found 13/8£469
Mon 20/1019:45LTN - ORD
2 stops26h 25mMultiple Airlines
Mon 27/1020:20ORD - LTN
2 stops16h 55mMultiple Airlines
Deal found 14/8£473
Thu 4/908:45LTN - ORD
2 stops18h 30mMultiple Airlines
Thu 11/919:25ORD - LTN
2 stops15h 10mMultiple Airlines
Deal found 14/8£487
Sat 13/906:05LTN - STL
2 stops19h 52mMultiple Airlines
Sat 20/916:05STL - LTN
2 stops20h 05mMultiple Airlines
Deal found 14/8£769

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 15 August 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

Fri 5/9

11:30-19:00

1 stop13h 30m

Chicago O'Hare Intl

Mon 8/9

15:45-09:00

1 stop11h 15m

£423

LondonChicago

LTN - ORD

LTNORD

London Luton

Sat 6/9

08:40-19:00

1 stop16h 20m

Chicago O'Hare Intl

Sat 13/9

15:45-09:30

1 stop11h 45m

£431

LondonChicago

LTN - ORD

LTNORD

London Luton

Sat 1/11

21:00-16:00

2 stops24h 00m

Chicago O'Hare Intl

Wed 5/11

19:10-22:20

2 stops21h 10m

£438

LondonChicago

LTN - ORD

LTNORD

London Luton

Wed 10/9

10:00-15:55

2 stops35h 55m

Chicago O'Hare Intl

Wed 17/9

10:40-15:25

2 stops22h 45m

£439

LondonChicago

LTN - ORD

LTNORD

London Luton

Fri 3/10

13:30-19:00

1 stop11h 30m

Chicago O'Hare Intl

Sun 5/10

21:15-15:40

1 stop12h 25m

£439

LondonChicago

LTN - ORD

LTNORD

London Luton

Fri 12/9

11:30-19:00

1 stop13h 30m

Chicago O'Hare Intl

Fri 19/9

21:15-15:45

1 stop12h 30m

£443

LondonChicago

LTN - ORD

LTNORD

London Luton

Thu 4/9

12:35-16:10

2 stops33h 35m

Chicago O'Hare Intl

Mon 8/9

11:13-16:00

3 stops22h 47m

£452

LondonChicago

LTN - ORD

LTNORD

London Luton

Mon 22/9

12:50-15:55

2 stops33h 05m

Chicago O'Hare Intl

Sun 28/9

15:35-19:25

2 stops21h 50m

£457

LondonChicago

LTN - ORD

LTNORD

London Luton

Sun 5/10

09:55-19:00

1 stop15h 05m

Chicago O'Hare Intl

Sun 12/10

21:15-21:30

1 stop18h 15m

£466

LondonChicago

LTN - ORD

LTNORD

London Luton

Sat 27/9

08:40-14:00

1 stop11h 20m

Chicago O'Hare Intl

Sat 4/10

15:45-09:30

1 stop11h 45m

£469

Flights are sorted by cheapest return flights first.

Deals found on 13/8

Showing 1-10 of 27 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

What is the cheapest time of day to fly from LTN to IL?

Find hourly flight availability from Luton to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 August 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Luton Airport to Illinois as you normally would.

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.

  • What is the cheapest month to book a flight from London Luton Airport to Illinois?

    Currently, January is the cheapest month in which you can book a flight from London Luton Airport to Illinois (average of £595). Flying from London Luton Airport to Illinois in July is currently the most expensive (average of £843). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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

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Can Cheapflights notify me if prices for flights from Luton to Illinois become cheaper?

Yes! Start tracking prices for Luton to Illinois flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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