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HK$3,998+ Cheap flights to Illinois

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 23-9. Fares are subject to change and may not be available on all flights or dates of travel.
— ORD
23 Apr — 30 Apr1
1 adult

Flights to Illinois in 2025

Find the latest flights to Illinois in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 70,647 searches and data was last updated on 18 April 2025.

Return from

HK$7,444

One-way from

HK$3,998

Popular in

August

Cheapest in

October

Average price

HK$7,747

Good round-trip deal

HK$8,854 or less
EVA Air
  • EVA Air
  • 1-9-24-1
  • 3 total stops
  • 56h 53m total
  • Hong Kong to Chicago
23-9
  • 23-9
  • 3 total stops
  • 37h 25m total
  • Hong Kong to Illinois
Highest demand for flights based on searches. 14% potential increase in price (HK$12,085 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (HK$2,656 potential savings vs. average return price).
Average for return flights in April 2025
Price to beat on a round-trip flight from Hong Kong Intl to Illinois.

Find flight deals to Illinois

Cheapest flights to Illinois
Explore the most affordable flight options available to Illinois. Find the lowest fares based on data from user searches, with prices last updated on 18 April 2025.

Mon 1-919:40HKG - ORD
2 stops37h 23mMultiple Airlines
Sat 24-123:30ORD - HKG
1 stop19h 30mMultiple Airlines
Deal found 17-4HK$7,444
Mon 19-521:45HKG - ORD
1 stop36h 15mEVA Air
Wed 28-500:30ORD - HKG
1 stop20h 35mEVA Air
Deal found 16-4HK$7,452
Wed 11-618:00HKG - ORD
2 stops35h 51mAir Canada
Wed 6-815:35ORD - HKG
1 stop35h 30mAir Canada
Deal found 17-4HK$7,631
Wed 21-522:30HKG - ORD
1 stop19h 41mUnited Airlines
Mon 10-1110:50ORD - HKG
2 stops30h 10mUnited Airlines
Deal found 17-4HK$7,747
Tue 20-500:45HKG - ORD
2 stops33h 35mDelta
Mon 10-1107:30ORD - HKG
2 stops25h 40mDelta
Deal found 17-4HK$7,794
Tue 20-500:45HKG - MDW
2 stops33h 42mDelta
Mon 10-1118:50MDW - HKG
2 stops38h 20mDelta
Deal found 17-4HK$7,794
Fri 2-514:45HKG - ORD
1 stop30h 55mANA
Mon 5-518:33ORD - HKG
2 stops39h 12mANA
Deal found 18-4HK$8,026
Tue 8-722:30HKG - ORD
1 stop24h 10mTurkish Airlines
Tue 29-719:50ORD - HKG
1 stop24h 00mTurkish Airlines
Deal found 17-4HK$8,407
Sun 1-601:25HKG - ORD
1 stop26h 40mQatar Airways
Mon 9-619:20ORD - HKG
1 stop30h 50mQatar Airways
Deal found 18-4HK$8,469
Tue 10-601:25HKG - ORD
1 stop26h 40mJetBlue
Wed 6-819:20ORD - HKG
1 stop30h 50mJetBlue
Deal found 17-4HK$8,795
Tue 20-500:45HKG - ORD
1 stop21h 55mKorean Air
Mon 10-1111:05ORD - HKG
1 stop39h 45mKorean Air
Deal found 17-4HK$8,958
Sun 1-623:00HKG - STL
2 stops31h 00mMultiple Airlines
Sun 8-606:00STL - HKG
2 stops44h 50mMultiple Airlines
Deal found 16-4HK$9,005

Cheapflights Fare Finder

Locate flights to Illinois that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 70,647 searches and data was last updated on 18 April 2025.
Use the filters below to find and compare flights to Illinois that are best for you.

Fly from

Hong Kong

Route

Departure

Return

Price

Hong KongChicago

HKG - ORD

HKGORD

Hong Kong Intl

Mon 1-9

19:40-20:03

2 stops37h 23m

Chicago O'Hare Intl

Sat 24-1

23:30-09:00

1 stop19h 30m

HK$7,444

Hong KongChicago

HKG - ORD

HKGORD

Hong Kong Intl

Mon 19-5

21:45-21:00

1 stop36h 15m

Chicago O'Hare Intl

Wed 28-5

00:30-10:05

1 stop20h 35m

HK$7,452

Hong KongChicago

HKG - ORD

HKGORD

Hong Kong Intl

Wed 11-6

18:00-16:51

2 stops35h 51m

Chicago O'Hare Intl

Wed 6-8

15:35-16:05

1 stop35h 30m

HK$7,631

Hong KongChicago

HKG - ORD

HKGORD

Hong Kong Intl

Wed 21-5

22:30-05:11

1 stop19h 41m

Chicago O'Hare Intl

Mon 10-11

10:50-07:00

2 stops30h 10m

HK$7,747

Hong KongChicago

HKG - ORD

HKGORD

Hong Kong Intl

Tue 20-5

00:45-21:20

2 stops33h 35m

Chicago O'Hare Intl

Mon 10-11

07:30-23:10

2 stops25h 40m

HK$7,794

Hong KongChicago

HKG - MDW

HKGMDW

Hong Kong Intl

Tue 20-5

00:45-21:27

2 stops33h 42m

Chicago Midway

Mon 10-11

18:50-23:10

2 stops38h 20m

HK$7,794

Hong KongChicago

HKG - ORD

HKGORD

Hong Kong Intl

Fri 2-5

14:45-08:40

1 stop30h 55m

Chicago O'Hare Intl

Mon 5-5

18:33-22:45

2 stops39h 12m

HK$8,026

Hong KongChicago

HKG - ORD

HKGORD

Hong Kong Intl

Tue 8-7

22:30-09:40

1 stop24h 10m

Chicago O'Hare Intl

Tue 29-7

19:50-08:50

1 stop24h 00m

HK$8,407

Hong KongChicago

HKG - ORD

HKGORD

Hong Kong Intl

Sun 1-6

01:25-15:05

1 stop26h 40m

Chicago O'Hare Intl

Mon 9-6

19:20-15:10

1 stop30h 50m

HK$8,469

Hong KongChicago

HKG - ORD

HKGORD

Hong Kong Intl

Tue 10-6

01:25-15:05

1 stop26h 40m

Chicago O'Hare Intl

Wed 6-8

19:20-15:10

1 stop30h 50m

HK$8,795

Flights are sorted by cheapest return flights first.

Deals found on 17-4

Showing 1-10 of 43 results
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Best time to book a flight to Illinois

Have a flexible travel schedule? Discover the best time to fly to 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.

Cheapflights Insights

Everything you need to know about your flight to Illinois

How long is the flight to Illinois?

On average, a flight from Hong Kong to Illinois takes 25 hours 46 minutes. Flights to Illinois from other popular cities in Hong Kong will vary in length. Below are a few examples of popular routes and their flight times.

When is the cheapest time to fly to Illinois?

Use this chart to determine the cheapest time to fly return from Hong Kong to Illinois. Price data was last updated on 14 April 2024.

Users looking for the lowest fares to Illinois should consider flying on Friday afternoons, when prices are typically cheapest. Budget-minded travellers will want to avoid Monday afternoons, when prices are usually at their highest.

Weekly flight availability to Illinois

The most flights from Hong Kong to Illinois are scheduled on a Tuesday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

What are the cheapest airlines that fly to Illinois?

The cheapest airlines flying from Hong Kong to Illinois are EVA Air, United Airlines and Cathay Pacific.

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 43.0 - 125.0 mm per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Illinois when rainfall is around 43.0 mm.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated 18 April 2025.
Peruse reviews from past customers who have flown EVA Air, Korean Air and Japan Airlines to Illinois to help guide your decision. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Food

8.1

Overall

8.4

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Food

8.1

Overall

8.4

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Food

8.1

Overall

8.4

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Food

8.1

Overall

8.4

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
8.3
Very Good

Food

8.1

Overall

8.4

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Food

8.1

Overall

8.4

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

FAQs about flying to Illinois

Illinois climate

Illinois’s winters are very cold and long with snow and icy winds from late November through to April. Summers, especially July and August, the weather tends to be hot and humid. The best times to visit is when the weather is perfect, in spring and autumn; tornado season can occur anytime between the months of March and May. Chicago’s summers are humid with highs of 30 degrees (Celsius) or more and its winters are bitterly cold.

Getting around Illinois

Public transportation is reliable and taxis are easy to find. Driving is not recommended because of heavy traffic and parking is almost impossible to find. The El, a system operated by The Chicago Transit Authority consists of elevated trains running 24 hours a day. During the summer rush hour a River Bus is available.

What is good to know if travelling to Illinois?

  • Chicago has a wealth of things to see and do. The best view of the city can be found at 1,450 feet from the top of North America’s tallest building – the Sears Tower. Head to the 103rd floor to the Skydeck where you can see the entire city laid out.  The Hancock Building is also well worth a visit and offers stunning city views from its observation deck or cocktail bar.
  • Don’t miss a trip to the Anderson Japanese Gardens in Rockford. Set on twelve acres the gardens are adorned with Japanese maples, magnolias, and rhododendrons and have several ponds and waterfalls with Japanese bronze structures surrounding them. There’s also an authentic tea house and contemporary “Garden of Reflection”.  
  • Visit the preserved Frank Lloyd Wright Museum on Chicago Avenue in Oak Park where the famed architect spent 20 years of his career and designed 130 of his masterpieces.  Wright lived here until 1909.
  • One of the most visited attractions in Chicago is the Art Institute of Chicago. Art lovers – well any visitor – shouldn’t miss a trip to the museum, it’s remarkable. The gargantuan building houses more than 250,000 works of art from all over the world including ancient Egyptian, Japanese, Korean, Greek and Roman relics. One of its highlights is the anthology of Impressionist art which has an impressive collection by Monet, Pablo Picasso and Henri Matisse to name a few.
  • Anyone interested in the lives of the Amish people should head to central Illinois where a welcoming group of Amish villages are set up. Take a tour of the community in the Illinois Amish Interpretative Centre in Arcola, visit a working farm and watch how supper is prepared and enjoyed in a family home.
  • When is the best time to fly to Illinois?

    Peak Season: Winter is peak season in Illinois for skiing and snowmobiling. In summer many different festivals take place in Chicago’s parks and neighbourhoods almost every weekend, making it difficult to find a cheap Illinois flight. Off Season: The best month to book a cheap Illinois flight is September, which is also the mildest month. Autumn is visually the prettiest time to visit when the temperature is still mild and the foliage is changing. The quietest months in Chicago are from January to March but they can also be the coldest and windiest.

  • Can I find cheaper flights to Illinois if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Illinois on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Illinois?

    Based on reviews from Cheapflights users, EVA Air is rated the highest out of the airlines that fly to Illinois.

  • What is the cheapest airport to fly to in Illinois?

    Chicago O'Hare Intl is currently the cheapest airport to fly to in Illinois. One-way flights to Chicago O'Hare Intl typically cost HK$437, while return flights cost around HK$1,308.

  • How much is a return flight to Illinois?

    A return flight to Illinois will typically cost around HK$283, however they can be found for as little as HK$168.

  • Where does the fastest flight to Illinois depart from?

    For those looking to save time traveling to Illinois, Hong Kong Intl offers the quickest one-way flight (14 hours 45 minutes).

  • Does Chicago O'Hare Intl have rental cars?

    Yes. Those touching down at Chicago O'Hare Intl can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Chicago O'Hare Intl?

    Yes. Chicago O'Hare Intl has hotels nearby for those requiring accommodations. Hilton Chicago O'Hare Airport is the closest property to Chicago O'Hare Intl (0.0 km away from Chicago O'Hare Intl).

See more FAQs

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