Find flights
When to book

Cheap flights from London Luton Airport to Illinois from £421

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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — ORD
21 Jul — 28 Jul1
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 21 June 2026.

Tue 21/709:40
LTN
-
ORD
2 stops18h 25m
Multiple Airlines
Mon 21/919:25
ORD
-
LTN
2 stops15h 45m
Multiple Airlines
Deal found 16/6£573
Wed 29/706:15
LTN
-
ORD
2 stops18h 00m
Multiple Airlines
Mon 3/819:25
ORD
-
LTN
2 stops21h 25m
Multiple Airlines
Deal found 17/6£576
Fri 4/912:50
LTN
-
ORD
1 stop12h 25m
Multiple Airlines
Mon 7/915:45
ORD
-
LTN
1 stop11h 30m
Multiple Airlines
Deal found 18/6£578
Sun 30/816:25
LTN
-
ORD
2 stops32h 50m
Multiple Airlines
Thu 17/919:25
ORD
-
LTN
2 stops23h 25m
Multiple Airlines
Deal found 19/6£581
Wed 8/706:15
LTN
-
ORD
2 stops18h 00m
Multiple Airlines
Tue 21/719:25
ORD
-
LTN
2 stops20h 45m
Multiple Airlines
Deal found 18/6£582
Sat 7/1112:15
LTN
-
ORD
2 stops33h 15m
Multiple Airlines
Mon 7/1218:30
ORD
-
LTN
2 stops16h 25m
Multiple Airlines
Deal found 16/6£584
Tue 15/905:40
LTN
-
ORD
3 stops20h 08m
Multiple Airlines
Tue 22/919:25
ORD
-
LTN
2 stops21h 25m
Multiple Airlines
Deal found 17/6£585
Tue 7/707:55
LTN
-
ORD
3 stops18h 10m
Multiple Airlines
Tue 14/717:35
ORD
-
LTN
2 stops23h 15m
Multiple Airlines
Deal found 19/6£586
Fri 28/806:20
LTN
-
ORD
2 stops21h 05m
Multiple Airlines
Wed 2/919:25
ORD
-
LTN
2 stops19h 50m
Multiple Airlines
Deal found 20/6£587
Fri 21/806:20
LTN
-
ORD
3 stops33h 56m
Multiple Airlines
Sun 30/819:25
ORD
-
LTN
2 stops20h 55m
Multiple Airlines
Deal found 18/6£590
Thu 22/1008:30
LTN
-
ORD
2 stops15h 45m
Multiple Airlines
Wed 28/1019:30
ORD
-
LTN
2 stops15h 45m
Multiple Airlines
Deal found 17/6£590
Fri 28/806:20
LTN
-
STL
2 stops20h 02m
Multiple Airlines
Mon 7/912:10
STL
-
LTN
2 stops21h 35m
Multiple Airlines
Deal found 18/6£762

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 21 June 2026.

Round-trip from

£573

One-way from

£421

Popular in

July

Cheapest in

February

Average price

£665
21/7-21/9
  • 21/7-21/9
  • 4 total stops
  • 34h 10m total
  • London to Illinois
Search Deals
9/10
  • 9/10
  • 3 total stops
  • 47h 20m 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 June 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 21 June 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 30/8

16:25-19:15

2 stops32h 50m

Chicago O'Hare Intl

Thu 17/9

19:25-00:50

2 stops23h 25m

£581
Fastest return journey

LondonChicago

LTN - ORD

LTNORD

London Luton

Thu 15/10

08:30-18:15

2 stops15h 45m

Chicago O'Hare Intl

Sun 15/11

15:55-09:15

1 stop11h 20m

£581

LondonChicago

LTN - ORD

LTNORD

London Luton

Sat 7/11

12:15-15:30

2 stops33h 15m

Chicago O'Hare Intl

Mon 7/12

18:30-16:55

2 stops16h 25m

£584

LondonChicago

LTN - ORD

LTNORD

London Luton

Tue 6/10

21:50-14:30

2 stops22h 40m

Chicago O'Hare Intl

Sun 11/10

22:25-22:20

2 stops17h 55m

£595

LondonChicago

LTN - ORD

LTNORD

London Luton

Thu 8/10

08:25-19:50

1 stop17h 25m

Chicago O'Hare Intl

Tue 13/10

21:50-19:05

1 stop15h 15m

£597

LondonChicago

LTN - ORD

LTNORD

London Luton

Sat 24/10

08:30-18:15

2 stops15h 45m

Chicago O'Hare Intl

Sat 31/10

19:30-18:30

2 stops18h 00m

£615

LondonChicago

LTN - ORD

LTNORD

London Luton

Thu 13/8

07:10-19:52

2 stops18h 42m

Chicago O'Hare Intl

Sat 22/8

22:25-21:00

2 stops16h 35m

£627

LondonChicago

LTN - ORD

LTNORD

London Luton

Thu 16/7

13:00-19:15

1 stop12h 15m

Chicago O'Hare Intl

Thu 23/7

21:00-23:25

1 stop20h 25m

£641

LondonChicago

LTN - ORD

LTNORD

London Luton

Wed 29/7

08:55-16:57

2 stops14h 02m

Chicago O'Hare Intl

Mon 10/8

22:25-20:55

2 stops16h 30m

£655

LondonChicago

LTN - ORD

LTNORD

London Luton

Fri 3/7

06:20-19:15

1 stop18h 55m

Chicago O'Hare Intl

Mon 6/7

21:00-22:50

1 stop19h 50m

£662

Flights are sorted by cheapest return flights first.

Deals found on 20/6

Showing 1-10 of 43 resultsSorted by cheapest first
1
2
3
...
5

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.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Luton to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Newark flights
Heathrow to John F Kennedy Intl flights
Gatwick to John F Kennedy Intl flights
Heathrow to LaGuardia flights
Gatwick to Newark flights
Stansted to John F Kennedy Intl flights
Gatwick to LaGuardia flights
London City to John F Kennedy Intl flights
Heathrow to Orlando flights
Heathrow to Los Angeles flights
Heathrow to Dallas/Fort Worth flights
Heathrow to Miami flights
Heathrow to Boston flights
Luton to John F Kennedy Intl flights
Luton to Newark flights
Stansted to Newark flights
London City to Newark flights
Heathrow to Dulles Intl flights
Heathrow to Seattle flights
Gatwick to Orlando flights
Heathrow to O'Hare Intl flights
Heathrow to San Francisco flights
Gatwick to Los Angeles flights
Heathrow to Baltimore flights
Heathrow to Las Vegas flights
Stansted to Los Angeles flights
Gatwick to Boston flights
London City to Los Angeles flights
Gatwick to Miami flights
Stansted to Orlando flights
Stansted to Miami flights
Heathrow to Tampa flights
London City to Miami flights
Heathrow to Atlanta flights
Heathrow to Hobby flights
Heathrow to Ontario flights
London City to Orlando flights
Heathrow to Denver flights
London City to Boston flights
Heathrow to George Bush Intcntl flights
Stansted to Boston flights
Heathrow to Reagan-National flights
Gatwick to Dulles Intl flights
Luton to Miami flights
Heathrow to Sky Harbor Intl flights
Stansted to LaGuardia flights
Luton to Los Angeles flights
Gatwick to Dallas/Fort Worth flights
Gatwick to Seattle flights
London City to Seattle flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Luton to Illinois. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Luton to Illinois?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Luton to Illinois for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Luton to Illinois with no change fees?

Yes! Cheapflights helps users easily find flights from Luton to Illinois with no change fees.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.