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HK$3,477+ 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 1-9. Fares are subject to change and may not be available on all flights or dates of travel.
— ORD
17 Jul — 24 Jul1
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 12 July 2025.

Return from

HK$5,919

One-way from

HK$3,477

Popular in

August

Cheapest in

April

Average price

HK$12,567

Good round-trip deal

HK$8,695 or less
24-9-16-10
  • 24-9-16-10
  • 4 total stops
  • 63h 48m total
  • Hong Kong to Chicago
1-9
  • 1-9
  • 2 total stops
  • 29h 59m total
  • Hong Kong to Illinois
Highest demand for flights based on searches. 15% potential increase in price (HK$13,727 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease (HK$2,914 potential savings vs. average return price).
Average for return flights in July 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 12 July 2025.

Wed 24-900:45HKG - ORD
2 stops36h 18mMultiple Airlines
Thu 16-1006:00ORD - HKG
2 stops27h 30mMultiple Airlines
Deal found 11-7HK$5,919
Thu 11-921:45HKG - ORD
1 stop36h 00mEVA Air
Sun 8-300:30ORD - HKG
1 stop19h 30mEVA Air
Deal found 10-7HK$6,343
Thu 4-918:00HKG - ORD
1 stop34h 00mAir Canada
Wed 17-915:40ORD - HKG
1 stop35h 25mAir Canada
Deal found 11-7HK$7,159
Thu 11-909:30HKG - ORD
1 stop18h 25mANA
Mon 22-917:45ORD - HKG
1 stop29h 45mANA
Deal found 9-7HK$7,355
Thu 4-914:35HKG - ORD
1 stop37h 35mUnited Airlines
Thu 11-919:43ORD - HKG
1 stop20h 17mUnited Airlines
Deal found 11-7HK$7,426
Wed 3-900:45HKG - ORD
1 stop21h 45mKorean Air
Wed 17-912:10ORD - HKG
1 stop33h 30mKorean Air
Deal found 11-7HK$7,622
Wed 10-900:45HKG - ORD
2 stops24h 57mDelta
Mon 22-911:00ORD - HKG
2 stops22h 30mDelta
Deal found 9-7HK$7,810
Wed 10-900:45HKG - MDW
2 stops24h 43mDelta
Mon 22-912:43MDW - HKG
2 stops32h 57mDelta
Deal found 9-7HK$7,810
Mon 25-801:25HKG - STL
2 stops34h 49mQatar Airways
Tue 2-917:30STL - HKG
2 stops39h 15mQatar Airways
Deal found 11-7HK$10,142
Tue 26-816:05HKG - STL
1 stop20h 09mCathay Pacific
Tue 2-917:30STL - HKG
1 stop22h 05mCathay Pacific
Deal found 11-7HK$10,809
Tue 26-821:05HKG - STL
3 stops35h 55mMultiple Airlines
Tue 2-913:30STL - HKG
2 stops37h 35mMultiple Airlines
Deal found 11-7HK$11,249
Tue 26-811:15HKG - STL
1 stop18h 38mUnited Airlines
Tue 2-911:05STL - HKG
2 stops29h 35mUnited Airlines
Deal found 11-7HK$11,539

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 12 July 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

Wed 24-9

00:45-00:03

2 stops36h 18m

Chicago O'Hare Intl

Thu 16-10

06:00-22:30

2 stops27h 30m

HK$5,919

Hong KongChicago

HKG - ORD

HKGORD

Hong Kong Intl

Thu 11-9

21:45-20:45

1 stop36h 00m

Chicago O'Hare Intl

Sun 8-3

00:30-09:00

1 stop19h 30m

HK$6,343

Hong KongChicago

HKG - ORD

HKGORD

Hong Kong Intl

Thu 4-9

18:00-15:00

1 stop34h 00m

Chicago O'Hare Intl

Wed 17-9

15:40-16:05

1 stop35h 25m

HK$7,159

Hong KongChicago

HKG - ORD

HKGORD

Hong Kong Intl

Thu 11-9

09:30-14:55

1 stop18h 25m

Chicago O'Hare Intl

Mon 22-9

17:45-12:30

1 stop29h 45m

HK$7,355

Hong KongChicago

HKG - ORD

HKGORD

Hong Kong Intl

Thu 4-9

14:35-15:10

1 stop37h 35m

Chicago O'Hare Intl

Thu 11-9

19:43-05:00

1 stop20h 17m

HK$7,426

Hong KongChicago

HKG - ORD

HKGORD

Hong Kong Intl

Wed 3-9

00:45-09:30

1 stop21h 45m

Chicago O'Hare Intl

Wed 17-9

12:10-10:40

1 stop33h 30m

HK$7,622

Hong KongChicago

HKG - ORD

HKGORD

Hong Kong Intl

Wed 10-9

00:45-12:42

2 stops24h 57m

Chicago O'Hare Intl

Mon 22-9

11:00-22:30

2 stops22h 30m

HK$7,810

Hong KongChicago

HKG - MDW

HKGMDW

Hong Kong Intl

Wed 10-9

00:45-12:28

2 stops24h 43m

Chicago Midway

Mon 22-9

12:43-10:40

2 stops32h 57m

HK$7,810

Hong KongSt. Louis

HKG - STL

HKGSTL

Hong Kong Intl

Mon 25-8

01:25-23:14

2 stops34h 49m

Lambert-St Louis

Tue 2-9

17:30-21:45

2 stops39h 15m

HK$10,142

Hong KongSt. Louis

HKG - STL

HKGSTL

Hong Kong Intl

Tue 26-8

16:05-23:14

1 stop20h 09m

Lambert-St Louis

Tue 2-9

17:30-04:35

1 stop22h 05m

HK$10,809

Flights are sorted by cheapest return flights first.

Deals found on 11-7

Showing 1-10 of 27 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 26 hours 55 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.

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 12 July 2025.
See what other customers who have flown with EVA Air, ANA, andKorean Air to the United States have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.4

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.4

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
8.4
Very Good

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.4

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.4

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.4

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
8.0
Very Good

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.4

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

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$668, while return flights cost around HK$986.

  • How much is a return flight to Illinois?

    A return flight to Illinois will typically cost around HK$987, however they can be found for as little as HK$126.

  • 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 25 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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