Find flights
When to book

Cheap flights from London Luton Airport to Illinois from £392

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 30/11. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — ORD
5 Jul — 12 Jul1
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 30 June 2025.

Round-trip from

£418

One-way from

£392

Popular in

August

Cheapest in

February

Average price

£525
22/8-25/8
  • 22/8-25/8
  • 4 total stops
  • 54h 15m total
  • London to Illinois
30/11
  • 30/11
  • 1 total stop
  • 17h 20m total
  • London to Illinois
Highest demand for flights based on searches. 12% potential increase in price (£52 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Average for round-trip flights in June 2025

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 30 June 2025.

Fri 22/813:30LTN - ORD
2 stops33h 00mMultiple Airlines
Mon 25/818:10ORD - LTN
2 stops21h 15mMultiple Airlines
Deal found 28/6£418
Thu 21/806:05LTN - STL
3 stops37h 27mMultiple Airlines
Sun 31/814:30STL - LTN
3 stops25h 35mMultiple Airlines
Deal found 29/6£641

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 30 June 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 22/8

13:30-16:30

2 stops33h 00m

Chicago O'Hare Intl

Mon 25/8

18:10-21:25

2 stops21h 15m

£418

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Thu 21/8

06:05-13:32

3 stops37h 27m

Lambert-St Louis

Sun 31/8

14:30-22:05

3 stops25h 35m

£641

LondonChicago

LTN - ORD

LTNORD

London Luton

Sun 30/11

06:00-17:20

1 stop17h 20m

£392

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Sun 9/11

06:00-07:49

3 stops31h 49m

£461

Flights are sorted by cheapest return flights first.

Deals found on 29/6

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 30 June 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

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.

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.