£75+ Cheap flights from Illinois
This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 30/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
ORD — LHR
10 Nov — 17 Nov1
Find flights from Illinois within your budget
Find flights departing from Illinois that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 11 October 2026. In the last 7 days, Cheapflights users made a total of 7,457,451 searches
Fly to
Route
Depart
Return
Cheapest return flight
ChicagoLos Angeles
ORD Chicago O'Hare Intl - LAX Los Angeles
ORDLAX
Chicago O'Hare Intl
Wed 18/11
20:11-22:55
Nonstop4h 44m
Los Angeles
Wed 31/12
00:00-02:00
Nonstop0h 00m
£75
ChicagoLos Angeles
ORD Chicago O'Hare Intl - LAX Los Angeles
ORDLAX
Chicago O'Hare Intl
Sat 31/10
06:35-15:15
1 stop10h 40m
Los Angeles
Wed 31/12
00:00-02:00
Nonstop0h 00m
£75
ChicagoLos Angeles
ORD Chicago O'Hare Intl - LAX Los Angeles
ORDLAX
Chicago O'Hare Intl
Tue 5/1
07:00-14:50
1 stop9h 50m
Los Angeles
Wed 31/12
00:00-02:00
Nonstop0h 00m
£75
ChicagoLos Angeles
ORD Chicago O'Hare Intl - LAX Los Angeles
ORDLAX
Chicago O'Hare Intl
Sat 21/11
18:54-08:40
1 stop15h 46m
Los Angeles
Wed 31/12
00:00-02:00
Nonstop0h 00m
£79
ChicagoLos Angeles
ORD Chicago O'Hare Intl - LAX Los Angeles
ORDLAX
Chicago O'Hare Intl
Wed 3/2
14:55-17:30
Nonstop4h 35m
Los Angeles
Wed 31/12
00:00-02:00
Nonstop0h 00m
£82
ChicagoLos Angeles
ORD Chicago O'Hare Intl - LAX Los Angeles
ORDLAX
Chicago O'Hare Intl
Fri 5/2
12:40-20:43
1 stop10h 03m
Los Angeles
Wed 31/12
00:00-02:00
Nonstop0h 00m
£90
ChicagoLos Angeles
ORD Chicago O'Hare Intl - LAX Los Angeles
ORDLAX
Chicago O'Hare Intl
Fri 1/1
06:00-15:04
1 stop11h 04m
Los Angeles
Wed 31/12
00:00-02:00
Nonstop0h 00m
£90
ChicagoLos Angeles
ORD Chicago O'Hare Intl - LAX Los Angeles
ORDLAX
Chicago O'Hare Intl
Sun 15/11
06:23-11:05
1 stop6h 42m
Los Angeles
Wed 31/12
00:00-02:00
Nonstop0h 00m
£90
ChicagoLas Vegas
ORD Chicago O'Hare Intl - LAS Las Vegas Harry Reid Intl
ORDLAS
Chicago O'Hare Intl
Thu 7/1
07:10-13:47
1 stop8h 37m
Las Vegas Harry Reid Intl
Wed 31/12
00:00-02:00
Nonstop0h 00m
£94
ChicagoLos Angeles
ORD Chicago O'Hare Intl - LAX Los Angeles
ORDLAX
Chicago O'Hare Intl
Tue 27/10
14:45-17:16
Nonstop4h 31m
Los Angeles
Wed 31/12
00:00-02:00
Nonstop0h 00m
£97
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Illinois
Have a flexible travel schedule? Discover the best time to fly from Illinois with our price prediction graph.
BOM-DEL
BOM-DXB
ORD-LAX
ORD-LAS
ORD-JFK
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.
Travel insights for flights from Illinois
Get recent, data-driven insights about flights from Illinois including ideal travel times, pricing trends, and more.
USIL-LHR
BOM-DEL
BOM-DXB
ORD-LAX
ORD-LAS
What is the cheapest month to book a flight from Illinois?
Currently, January is the cheapest month in which you can book a flight from Illinois (average of £473). Flying from Illinois in June will prove the most costly (average of £1,045). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.
Which airlines fly from Illinois?
Many airlines operate round-trip flights from Illinois: British Airways, Aer Lingus, United Airlines, Icelandair, American Airlines. These airlines fly to the following popular destinations: London.
What is the cheapest place to fly to from Illinois?
The cheapest city to fly to from Illinois is Houston Hobby, with prices starting at £69. Explore other affordable destinations below.
When is the best time to book a flight from Illinois?
Booking 65 days in advance of your planned departure date is, on average, the best time to get cheap flights from Illinois. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
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.
Direct flights from USA
International destinations
Other Illinois origins
Other United States cities
Popular destinations
Popular flights
Direct flights from USA
Book a direct flight from one of these other cities located in USA.
Popular international destinations from Illinois
The most popular international flight routes departing from Illinois we’ve come across at this time.
Fly from popular cities in Illinois
Consider departing from one of these cities also located in Illinois. Flight origins are based on user searches made on Cheapflights and were last updated on 11 October 2026.
Fly from other United States cities
Popular Return Flight Destinations
Consider these popular destinations that Cheapflights users have chosen when departing from Illinois. Routes are based on user searches and were last updated on 11 October 2026.
Popular flight searches
Check out other popular destinations found by fellow travellers in 2026
Related info for your journey
Access useful and relevant information related to your journey from Illinois. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 11 October 2026.
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 Illinois?
Cheapflights makes it easy to find flights from Illinois by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
Why should you use Cheapflights to find cheap flight tickets from Illinois?
Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Illinois for you. Better yet — we are completely free to use.
Can Cheapflights find flights from Illinois with no change fees?
Need flexible booking options for your flight from Illinois ? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.
Can Cheapflights notify me if prices for flights from Illinois become cheaper?
Not ready to book yet? You can track prices for flights from Illinois on Cheapflights with our Price Alerts feature and get notified when better prices are available.