What is the cheapest airport to fly out of Illinois?

Chicago O'Hare Intl airport offers the cheapest routes to Almaty, from £310; whereas Chicago Midway airport is typically cheaper if you're flying to London, from £384. 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 £310 round trip Travel from Chicago to Edinburgh from £335 round trip Travel from Chicago to Glasgow from £342 round trip Travel from Chicago to Bristol from £365 round trip Travel from Chicago to Almaty from £930 round trip

£85+ Cheap Flights from Illinois

What to know about flights from Illinois

Good round-trip deal	£43 or less
Good one-way deal	£51 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

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 17 September 2025.

Wed 28/111:15ORD - LHR

2 stops13h 55mMultiple Airlines

Wed 4/209:00LHR - ORD

2 stops15h 51mMultiple Airlines

Deal found 15/9£370

Mon 2/218:30ORD - LGW

1 stop10h 25mIcelandair

Sun 15/211:55LGW - ORD

1 stop11h 25mIcelandair

Deal found 15/9£370

Mon 1/1218:30ORD - STN

2 stops13h 50mMultiple Airlines

Sun 14/1206:30STN - ORD

2 stops16h 50mMultiple Airlines

Deal found 15/9£370

Fri 10/1021:12ORD - LHR

2 stops17h 48mMultiple Airlines

Sun 12/1006:00LHR - ORD

1 stop13h 20mMultiple Airlines

Deal found 15/9£371

Wed 5/1118:30ORD - LGW

2 stops16h 50mMultiple Airlines

Tue 11/1108:50LGW - ORD

2 stops14h 30mMultiple Airlines

Deal found 14/9£371

Sun 28/916:00ORD - LHR

Nonstop8h 20mUnited Airlines

Tue 21/1006:50LHR - ORD

1 stop11h 15mUnited Airlines

Deal found 15/9£372

Mon 6/1019:51ORD - LGW

1 stop32h 09mMultiple Airlines

Thu 9/1014:00LGW - ORD

1 stop34h 46mMultiple Airlines

Deal found 15/9£372

Fri 28/1118:30ORD - STN

2 stops20h 05mMultiple Airlines

Fri 5/1205:55STN - ORD

2 stops17h 25mMultiple Airlines

Deal found 14/9£372

Sun 28/910:40ORD - LHR

1 stop13h 50mAir Canada

Tue 28/1013:00LHR - ORD

1 stop11h 30mAir Canada

Deal found 16/9£372

Thu 12/218:30ORD - LGW

1 stop10h 25mIcelandair

Sun 15/211:55LGW - ORD

1 stop11h 25mIcelandair

Deal found 15/9£372

Wed 5/1118:30ORD - LTN

2 stops22h 35mMultiple Airlines

Wed 12/1106:50LTN - ORD

2 stops16h 30mMultiple Airlines

Deal found 15/9£373

Sun 28/907:11ORD - LHR

1 stop17h 19mAir Canada

Tue 7/1006:50LHR - ORD

2 stops13h 58mAir Canada

Deal found 15/9£373

Best flights from Illinois
Discover carefully curated flight deals from Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 September 2025.

Sun 28/916:00ORD - LHR

Nonstop8h 20mUnited Airlines

Tue 21/1006:50LHR - ORD

1 stop11h 15mUnited Airlines

Deal found 15/9£372

Fri 28/1118:30ORD - STN

2 stops20h 05mMultiple Airlines

Fri 5/1205:55STN - ORD

2 stops17h 25mMultiple Airlines

Deal found 14/9£372

Tue 14/1018:20ORD - LHR

1 stop10h 40mDelta

Wed 29/1009:00LHR - ORD

1 stop12h 10mDelta

Deal found 15/9£377

Wed 25/217:10ORD - LHR

Nonstop7h 45mBritish Airways

Tue 10/311:00LHR - ORD

Nonstop8h 50mBritish Airways

Deal found 16/9£380

Mon 17/1118:30ORD - LGW

1 stop10h 25mIcelandair

Tue 25/1111:55LGW - ORD

1 stop11h 25mIcelandair

Deal found 15/9£380

Tue 2/1210:45STL - LHR

2 stops14h 05mVirgin Atlantic

Tue 9/1211:30LHR - STL

2 stops16h 28mVirgin Atlantic

Deal found 14/9£387

Mon 27/1018:23MDW - LHR

1 stop9h 22mKLM

Tue 11/1111:05LHR - MDW

1 stop13h 13mKLM

Deal found 15/9£390

Sun 1/316:05STL - LHR

2 stops22h 30mAir Canada

Fri 13/318:00LHR - STL

2 stops25h 18mAir Canada

Deal found 14/9£393

Thu 26/220:20ORD - EDI

1 stop37h 00mTurkish Airlines

Fri 6/311:00EDI - ORD

1 stop37h 25mTurkish Airlines

Deal found 15/9£561

Tue 21/1010:40ORD - LHR

1 stop16h 55mUnited Airlines

Mon 27/1016:40LHR - ORD

1 stop27h 30mUnited Airlines

Deal found 15/9£375

Wed 3/1218:30ORD - LTN

2 stops22h 35mMultiple Airlines

Tue 9/1209:00LTN - ORD

2 stops14h 20mMultiple Airlines

Deal found 14/9£375

Wed 1/1018:28ORD - LHR

1 stop10h 57mDelta

Tue 21/1006:30LHR - ORD

1 stop13h 40mDelta

Deal found 15/9£378

Mon 17/1118:30ORD - LGW

1 stop10h 25mIcelandair

Mon 24/1111:55LGW - ORD

1 stop11h 25mIcelandair

Deal found 15/9£380

Wed 21/113:05MDW - LHR

1 stop12h 45mVirgin Atlantic

Wed 4/306:20LHR - MDW

2 stops17h 48mVirgin Atlantic

Deal found 16/9£390

Tue 20/114:00MDW - LHR

1 stop11h 05mKLM

Thu 5/313:00LHR - MDW

1 stop11h 34mKLM

Deal found 16/9£396

Tue 14/1014:00ORD - STN

2 stops16h 00mMultiple Airlines

Tue 21/1021:45STN - ORD

2 stops28h 32mMultiple Airlines

Deal found 15/9£378

Sun 28/920:10ORD - LHR

1 stop11h 00mDelta

Tue 21/1008:40LHR - ORD

1 stop11h 30mDelta

Deal found 16/9£378

Tue 21/1018:00ORD - LHR

Nonstop8h 20mUnited Airlines

Wed 29/1013:35LHR - ORD

Nonstop9h 25mUnited Airlines

Deal found 15/9£379

Wed 19/1118:30ORD - LGW

1 stop10h 25mIcelandair

Wed 26/1111:55LGW - ORD

1 stop11h 25mIcelandair

Deal found 14/9£380

Tue 20/114:00MDW - LHR

1 stop11h 05mKLM

Wed 4/308:55LHR - MDW

1 stop13h 30mKLM

Deal found 16/9£396

Tue 30/916:00ORD - LHR

Nonstop8h 20mUnited Airlines

Thu 16/1009:30LHR - ORD

1 stop11h 18mUnited Airlines

Deal found 15/9£379

Tue 18/1118:30ORD - LGW

1 stop10h 25mIcelandair

Tue 25/1111:55LGW - ORD

1 stop11h 25mIcelandair

Deal found 15/9£380

Wed 5/1113:26ORD - LCY

2 stops13h 24mVirgin Atlantic

Wed 12/1109:20LCY - ORD

1 stop11h 00mVirgin Atlantic

Deal found 15/9£419

Wed 26/1118:30ORD - LTN

2 stops21h 50mMultiple Airlines

Tue 2/1206:50LTN - ORD

2 stops16h 30mMultiple Airlines

Deal found 16/9£386

Tue 14/1010:45STL - LHR

2 stops16h 05mDelta

Wed 22/1006:30LHR - STL

2 stops15h 25mDelta

Deal found 13/9£389

Wed 21/114:00MDW - LHR

1 stop11h 05mKLM

Wed 4/311:05LHR - MDW

1 stop13h 03mKLM

Deal found 16/9£396

Sun 28/921:25ORD - LHR

Nonstop8h 20mUnited Airlines

Fri 17/1008:30LHR - ORD

Nonstop9h 00mUnited Airlines

Deal found 16/9£380

Tue 2/1218:30ORD - LGW

1 stop10h 25mIcelandair

Sun 7/1211:55LGW - ORD

1 stop11h 25mIcelandair

Deal found 16/9£381

Tue 14/1016:15ORD - LCY

1 stop21h 25mVirgin Atlantic

Tue 21/1009:20LCY - ORD

2 stops17h 03mVirgin Atlantic

Deal found 14/9£424

Thu 6/1108:00ORD - ALA

2 stops30h 30mQatar Airways

Wed 26/1103:00ALA - ORD

2 stops44h 03mQatar Airways

Deal found 16/9£1,034

Direct flights from Illinois
Explore direct flight options from Illinois based on user searches, and compare prices and availability for your desired travel dates. Data last updated 17 September 2025.

Sun 28/918:00ORD - LHR

Nonstop8h 20mAir Canada

Tue 7/1014:10LHR - ORD

Nonstop9h 10mAir Canada

Deal found 16/9£372

Wed 21/117:10ORD - LHR

Nonstop7h 45mFinnair

Tue 27/112:35LHR - ORD

Nonstop8h 50mFinnair

Deal found 16/9£374

Tue 14/1019:10ORD - LHR

Nonstop7h 55mBritish Airways

Tue 21/1013:10LHR - ORD

Nonstop8h 45mBritish Airways

Deal found 15/9£375

Wed 3/1217:10ORD - LHR

Nonstop7h 45mIberia

Wed 10/1211:00LHR - ORD

Nonstop8h 50mIberia

Deal found 14/9£376

Wed 11/318:10ORD - LHR

Nonstop7h 45mFinnair

Wed 25/311:00LHR - ORD

Nonstop8h 50mFinnair

Deal found 15/9£378

Sun 28/921:25ORD - LHR

Nonstop8h 20mUnited Airlines

Tue 7/1014:10LHR - ORD

Nonstop9h 10mUnited Airlines

Deal found 15/9£379

Sun 28/921:25ORD - LHR

Nonstop8h 20mUnited Airlines

Fri 17/1008:30LHR - ORD

Nonstop9h 00mUnited Airlines

Deal found 16/9£380

Thu 30/1018:50ORD - LHR

Nonstop8h 05mLufthansa

Thu 6/1110:25LHR - ORD

Nonstop9h 20mLufthansa

Deal found 15/9£386

Sun 1/317:10ORD - LHR

Nonstop7h 45mBritish Airways

Wed 6/509:15LHR - ORD

Nonstop8h 40mBritish Airways

Deal found 15/9£387

Tue 30/922:35ORD - LHR

Nonstop7h 40mBritish Airways

Wed 8/1011:05LHR - ORD

Nonstop8h 45mBritish Airways

Deal found 16/9£396

Wed 15/1018:25ORD - EDI

Nonstop8h 00mUnited Airlines

Wed 22/1011:30EDI - ORD

Nonstop8h 25mUnited Airlines

Deal found 15/9£761

Mon 13/1018:25ORD - EDI

Nonstop8h 00mUnited Airlines

Tue 21/1011:30EDI - ORD

Nonstop8h 25mUnited Airlines

Deal found 15/9£762

Last-minute flights from Illinois
Discover last-minute flight deals departing from Illinois. Data was last updated 17 September 2025 and is based on user searches.

Mon 22/921:50ORD - LHR

Nonstop7h 55mAir Canada

Tue 30/909:30LHR - ORD

1 stop11h 25mAir Canada

Deal found 15/9£370

Mon 22/917:40ORD - LHR

Nonstop7h 40mIberia

Tue 21/1012:15LHR - ORD

Nonstop8h 25mIberia

Deal found 15/9£375

Mon 22/908:40ORD - STN

2 stops20h 00mMultiple Airlines

Tue 30/907:15STN - ORD

2 stops32h 36mMultiple Airlines

Deal found 15/9£375

Mon 22/910:40ORD - LHR

1 stop13h 45mDelta

Tue 7/1006:30LHR - ORD

1 stop13h 40mDelta

Deal found 15/9£378

Tue 23/922:35ORD - LHR

Nonstop7h 40mFinnair

Fri 3/1014:25LHR - ORD

Nonstop8h 35mFinnair

Deal found 16/9£374

Wed 24/908:40ORD - LHR

1 stop15h 50mUnited Airlines

Tue 7/1006:50LHR - ORD

1 stop11h 15mUnited Airlines

Deal found 16/9£372

Fri 3/1017:17ORD - LGW

1 stop34h 43mMultiple Airlines

Mon 6/1014:00LGW - ORD

1 stop33h 53mMultiple Airlines

Deal found 15/9£375

Sun 5/1022:15ORD - LGW

1 stop10h 25mIcelandair

Tue 14/1015:40LGW - ORD

1 stop32h 35mIcelandair

Deal found 16/9£376

Mon 6/1019:51ORD - LGW

1 stop32h 09mMultiple Airlines

Thu 9/1014:00LGW - ORD

1 stop34h 46mMultiple Airlines

Deal found 15/9£372

Tue 14/1019:05ORD - LGW

1 stop16h 45mSWISS

Tue 21/1018:35LGW - ORD

1 stop27h 20mSWISS

Deal found 15/9£375

Wed 22/1010:40ORD - STN

2 stops21h 10mMultiple Airlines

Tue 28/1021:20STN - ORD

2 stops25h 00mMultiple Airlines

Deal found 15/9£372

Wed 29/1019:50ORD - LGW

1 stop17h 00mSWISS

Mon 3/1118:40LGW - ORD

1 stop27h 40mSWISS

Deal found 14/9£377

One-way flights from Illinois
Search for one-way flight options from Illinois. Find affordable one-way fares based on user searches. Data last updated 17 September 2025.

Thu 9/1017:30ORD - EDI

1 stop34h 35mWestJet

Deal found 15/9£166

Sat 25/1017:30ORD - LHR

1 stop14h 20mWestJet

Deal found 15/9£169

Fri 28/1120:15ORD - STN

2 stops21h 55mMultiple Airlines

Deal found 13/9£169

Wed 12/1119:10ORD - LTN

2 stops19h 55mMultiple Airlines

Deal found 13/9£171

Sun 19/1021:54ORD - LGW

2 stops50h 26mMultiple Airlines

Deal found 15/9£171

Fri 17/1019:43ORD - LGW

2 stops28h 37mMultiple Airlines

Deal found 14/9£172

Sat 18/1018:15ORD - LGW

1 stop33h 30mTAP AIR PORTUGAL

Deal found 14/9£172

Thu 20/1106:20MDW - LGW

2 stops32h 20mMultiple Airlines

Deal found 14/9£173

Sat 27/917:40ORD - LGW

2 stops30h 40mMultiple Airlines

Deal found 15/9£173

Wed 12/1119:10ORD - STN

2 stops21h 05mMultiple Airlines

Deal found 13/9£173

Wed 5/1119:10ORD - LTN

2 stops21h 10mMultiple Airlines

Deal found 15/9£174

Sun 2/1120:25ORD - LGW

1 stop31h 25mTAP AIR PORTUGAL

Deal found 14/9£174

Fly to

Route

Depart

Return

Price

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 28/9

16:00-06:20

Nonstop8h 20m

London Heathrow

Tue 21/10

06:50-12:05

1 stop11h 15m

£372

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Fri 28/11

18:30-20:35

2 stops20h 05m

London Stansted

Fri 5/12

05:55-17:20

2 stops17h 25m

£372

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 21/10

10:40-09:35

1 stop16h 55m

London Heathrow

Mon 27/10

16:40-15:10

1 stop27h 30m

£375

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Wed 3/12

18:30-23:05

2 stops22h 35m

London Luton

Tue 9/12

09:00-17:20

2 stops14h 20m

£375

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 14/10

18:20-11:00

1 stop10h 40m

London Heathrow

Wed 29/10

09:00-16:10

1 stop12h 10m

£377

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 1/10

18:28-11:25

1 stop10h 57m

London Heathrow

Tue 21/10

06:30-14:10

1 stop13h 40m

£378

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Tue 14/10

14:00-12:00

2 stops16h 00m

London Stansted

Tue 21/10

21:45-20:17

2 stops28h 32m

£378

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 28/9

20:10-13:10

1 stop11h 00m

London Heathrow

Tue 21/10

08:40-14:10

1 stop11h 30m

£378

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 21/10

18:00-08:20

Nonstop8h 20m

London Heathrow

Wed 29/10

13:35-18:00

Nonstop9h 25m

£379

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 30/9

16:00-06:20

Nonstop8h 20m

London Heathrow

Thu 16/10

09:30-14:48

1 stop11h 18m

£379

Flights are sorted by cheapest return flights first.

Deals found on 13/9

Showing 1-10 of 60 results

...

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 £287). Flying from Illinois in June will prove the most costly (average of £658). 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, United Airlines, Lufthansa. 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 Palm Beach Intl, with prices starting at £21. Explore other affordable destinations below.

Browse thousands of different options on Cheapflights for your next trip

Related info for your journey

What is the cheapest airport to fly out of Illinois?
Chicago O'Hare Intl airport offers the cheapest routes to Almaty, from £310; whereas Chicago Midway airport is typically cheaper if you're flying to London, from £384. 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 £310 round trip
Travel from Chicago to Edinburgh from £335 round trip
Travel from Chicago to Glasgow from £342 round trip
Travel from Chicago to Bristol from £365 round trip
Travel from Chicago to Almaty from £930 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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£85+ 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 29/10. 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.

What to know about flights from Illinois

Good round-trip deal

Good one-way deal

Find flights from Illinois

Cheapest flights from IllinoisExplore the most affordable flight options available from Illinois. Find the lowest fares based on data from user searches, with prices last updated on 17 September 2025.

Explore the most affordable flight options available from Illinois. Find the lowest fares based on data from user searches, with prices last updated on 17 September 2025.

Find flights from Illinois within your budget

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.

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?

Which airlines fly from Illinois?

What is the cheapest place to fly to from Illinois?

Browse thousands of different options on Cheapflights for your next trip

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Related info for your journey

What is the cheapest airport to fly out of Illinois?

What is the cheapest month to fly from Illinois?

Where are the cheapest places to fly to from Illinois?

How does Cheapflights help users find flights from Illinois?

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

Can Cheapflights find flights from Illinois with no change fees?

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

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?

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

Can Cheapflights find flights from Illinois with no change fees?

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

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Travel Smart

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 17 September 2025.