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£66+ 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 6/12. 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
7 déc. — 14 déc.1
1 adult
1 adult, Economy, 0 bags

What to know about flights from Illinois

Discover essential information about flights departing from Illinois, including flight schedules, destinations, airlines operating at the Illinois airport, and any specific guidelines or requirements for travellers. Please note that the information is based on the most recent updates available. Data last updated 7 novembre 2025.

Good round-trip deal

£45 or less

Good one-way deal

£38 or less
Price to beat on a round-trip flight from Illinois.
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Price to beat on a one-way flight from Illinois.
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Find flights from Illinois

Enter your travel dates to find the best prices.

Cheapest flights from Illinois
Explore the most affordable flight options available from Illinois. Find the lowest fares based on data from user searches, with prices last updated on 7 novembre 2025.

mar. 2/1218:30ORD - EDI
2 stops17h 55mMultiple Airlines
mar. 9/1208:40EDI - ORD
2 stops14h 40mMultiple Airlines
Deal found 4/11£380
mar. 2/1218:30ORD - EDI
2 stops17h 55mMultiple Airlines
mer. 10/1208:20EDI - ORD
2 stops15h 00mMultiple Airlines
Deal found 5/11£385
dim. 7/1218:30ORD - EDI
2 stops21h 35mMultiple Airlines
dim. 14/1208:00EDI - ORD
2 stops15h 20mMultiple Airlines
Deal found 5/11£386
mer. 3/1218:30ORD - EDI
2 stops21h 45mMultiple Airlines
mer. 10/1207:25EDI - ORD
2 stops15h 55mMultiple Airlines
Deal found 5/11£388
jeu. 4/1218:30ORD - EDI
2 stops22h 00mMultiple Airlines
jeu. 11/1207:45EDI - ORD
2 stops15h 35mMultiple Airlines
Deal found 4/11£399
mer. 3/1219:40ORD - EDI
1 stop18h 10mAer Lingus
mer. 10/1209:35EDI - ORD
1 stop14h 20mAer Lingus
Deal found 6/11£409
lun. 2/319:20ORD - LHR
1 stop16h 20mScandinavian Airlines
jeu. 5/310:20LHR - ORD
1 stop12h 25mScandinavian Airlines
Deal found 5/11£415
lun. 19/107:00ORD - LGW
1 stop21h 00mMultiple Airlines
mer. 18/215:20LGW - ORD
2 stops29h 35mMultiple Airlines
Deal found 5/11£415
dim. 30/1118:30ORD - LHR
1 stop19h 00mIcelandair
sam. 6/1212:15LHR - ORD
1 stop11h 05mIcelandair
Deal found 5/11£415
lun. 17/1106:40ORD - LGW
1 stop17h 20mMultiple Airlines
ven. 21/1121:45LGW - ORD
2 stops47h 00mMultiple Airlines
Deal found 5/11£415
lun. 12/119:20ORD - LHR
2 stops15h 05mScandinavian Airlines
mar. 20/119:50LHR - ORD
2 stops26h 55mScandinavian Airlines
Deal found 6/11£416
mer. 31/1218:30ORD - LGW
1 stop10h 25mIcelandair
dim. 11/111:55LGW - ORD
1 stop11h 25mIcelandair
Deal found 5/11£416

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 7 novembre 2025. In the last 7 days, Cheapflights users made a total of 858,174 searches

Fly to

Heathrow

Route

Depart

Return

Price

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

mer. 19/11

19:40-17:05

1 stop15h 25m

London Luton

lun. 24/11

06:00-14:00

1 stop14h 00m

£419

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

mer. 19/11

19:40-15:05

1 stop13h 25m

London Stansted

lun. 24/11

06:30-14:00

1 stop13h 30m

£419

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

mer. 25/2

07:01-13:00

2 stops23h 59m

London Stansted

lun. 2/3

07:35-16:45

1 stop15h 10m

£421

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

mer. 11/2

18:30-20:55

2 stops20h 25m

London Stansted

lun. 16/2

21:20-17:20

2 stops26h 00m

£422

ChicagoEdinburgh

ORD - EDI

ORDEDI

Chicago O'Hare Intl

mer. 3/12

15:50-07:50

1 stop10h 00m

Edinburgh Turnhouse

mer. 10/12

08:20-14:00

1 stop11h 40m

£443

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

mar. 2/12

21:45-11:35

Nonstop7h 50m

London Heathrow

ven. 12/12

11:00-13:50

Nonstop8h 50m

£444

ChicagoLondon

MDW - LHR

MDWLHR

Chicago Midway

lun. 24/11

13:47-07:05

1 stop11h 18m

London Heathrow

mar. 2/12

08:55-16:18

1 stop13h 23m

£447

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

lun. 2/2

17:10-06:55

Nonstop7h 45m

London Heathrow

mer. 18/2

11:00-13:50

Nonstop8h 50m

£450

ChicagoLondon

MDW - LHR

MDWLHR

Chicago Midway

mer. 3/12

13:50-07:05

1 stop11h 15m

London Heathrow

mer. 10/12

06:20-18:00

2 stops17h 40m

£450

ChicagoLondon

MDW - LHR

MDWLHR

Chicago Midway

mar. 2/12

12:50-06:25

1 stop11h 35m

London Heathrow

mer. 10/12

06:20-18:00

2 stops17h 40m

£450

Flights are sorted by cheapest return flights first.

Deals found on 5/11

Showing 1-10 of 60 results
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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.
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.

What is the cheapest month to book a flight from Illinois?

Currently, May is the cheapest month in which you can book a flight from Illinois (average of £305). Flying from Illinois in June will prove the most costly (average of £688). 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, Iberia, Finnair, Aer Lingus, United Airlines. These airlines fly to the following popular destinations: London.

British Airways
British Airways
From £392
Iberia
Iberia
From £373
United Airlines
United Airlines
From £134
Aer Lingus
Aer Lingus
From £320

What is the cheapest place to fly to from Illinois?

The cheapest city to fly to from Illinois is Palm Beach Intl, with prices starting at £22. Explore other affordable destinations below.

Palm Beach Intl
Palm Beach Intl
From £22
New York
New York
From £34
Dallas/Fort Worth
Dallas/Fort Worth
From £37
Houston Hobby
Houston Hobby
From £40

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Direct flights from USA

Book a direct flight from one of these other cities located in USA.
Direct flights from Peoria
Direct flights from Bloomington
Direct flights from Marion
Direct flights from St. Louis

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 7 novembre 2025.

  • What is the cheapest airport to fly out of Illinois?

    Chicago O'Hare Intl airport offers the cheapest routes to Almaty, from £312; whereas Chicago Midway airport is typically cheaper if you're flying to London, from £370. It's best to make sure you are flexible on dates to find the cheapest possible flight options for your journey.

  • What is the cheapest month to fly from Illinois?

    At the present moment the cheapest month to fly from Illinois is currently May; with June being the most expensive. Prices will vary depending on multiple factors such as booking in advance, airline and departure airports and times.

  • Where are the cheapest places to fly to from Illinois?

    Check out the cheapest flights from Illinois to embark to:
    Travel from Chicago to London from £312 round trip
    Travel from Chicago to Edinburgh from £331 round trip
    Travel from Chicago to Almaty from £969 round trip

  • 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.

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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.

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