HK$3,679+ Cheap flights to Illinois

— ORD
17 Sep — 24 Sep1
1 adult
1 adult, Economy, 0 bags

Flights to Illinois in 2026

Enter your travel dates to find the best prices.

Cheapest flights to Illinois

Sun 25-1022:30 -
2 stops24h 30m
Sat 7-1116:07 -
2 stops24h 53m
Deal found 17-8HK$6,699
Thu 10-912:20 -
2 stops24h 37m
Wed 23-907:07 -
1 stop32h 58m
Deal found 14-8HK$6,887
Thu 10-912:20 -
2 stops23h 24m
Wed 23-913:00 -
2 stops27h 05m
Deal found 14-8HK$6,895
Thu 10-922:30 -
1 stop19h 31m
Wed 23-908:50 -
1 stop20h 40m
Deal found 18-8HK$6,902
Tue 1-909:25 -
2 stops26h 11m
Thu 10-917:37 -
2 stops22h 28m
Deal found 15-8HK$6,902
Sun 18-1000:45 -
1 stop21h 45m
Wed 17-312:25 -
1 stop33h 55m
Deal found 14-8HK$6,918
Mon 28-912:20 -
2 stops22h 35m
Wed 14-1018:59 -
1 stop21h 06m
Deal found 15-8HK$6,965
Tue 1-909:25 -
2 stops36h 52m
Fri 4-909:59 -
2 stops41h 21m
Deal found 17-8HK$6,965
Tue 29-909:25 -
1 stop20h 58m
Wed 14-1018:59 -
1 stop21h 06m
Deal found 15-8HK$6,981
Mon 28-912:20 -
2 stops22h 13m
Sat 17-1007:35 -
2 stops32h 30m
Deal found 15-8HK$6,997
Mon 19-1009:25 -
2 stops25h 35m
Mon 22-318:30 -
1 stop23h 10m
Deal found 14-8HK$7,012
Mon 28-912:20 -
2 stops22h 13m
Tue 13-1009:59 -
2 stops23h 46m
Deal found 15-8HK$7,020

Find flights to Illinois

Explore Illinois

Find flight deals to Illinois

Return from

HK$6,699

One-way from

HK$3,679

Popular in

August

Cheapest in

September

Average price

HK$16,276
United Airlines
  • United Airlines
  • 25-10-7-11
  • 4 total stops
  • 49h 23m total
  • Hong Kong to Chicago
16-9
  • 16-9
  • 3 total stops
  • 32h 50m total
  • Hong Kong to Illinois
Highest demand for flights based on searches. 21% potential increase in price (HK$2,420 potential increase over avg. return price).
Cheapest flight prices on average. 7% potential price decrease (HK$659 potential savings vs. average return price).
Average for return flights in August 2026

Cheapflights Fare Finder

 
Use the filters below to find and compare flights to Illinois that are best for you.

Fly from

Route

Departure

Return

Price

Cheapest return flight

Hong KongChicago

HKG Hong Kong Intl - ORD Chicago O'Hare Intl

HKGORD

Hong Kong Intl

Wed 7-10

12:20-22:05

2 stops22h 45m

Chicago O'Hare Intl

Fri 23-10

11:19-05:05

2 stops28h 46m

HK$6,895

Hong KongChicago

HKG Hong Kong Intl - MDW Chicago Midway

HKGMDW

Hong Kong Intl

Wed 9-9

12:20-22:44

2 stops23h 24m

Chicago Midway

Wed 16-9

10:48-05:05

2 stops29h 17m

HK$6,895

Hong KongChicago

HKG Hong Kong Intl - MDW Chicago Midway

HKGMDW

Hong Kong Intl

Thu 10-9

12:20-22:44

2 stops23h 24m

Chicago Midway

Wed 23-9

13:00-05:05

2 stops27h 05m

HK$6,895

Hong KongChicago

HKG Hong Kong Intl - ORD Chicago O'Hare Intl

HKGORD

Hong Kong Intl

Thu 10-9

09:25-23:31

1 stop27h 06m

Chicago O'Hare Intl

Wed 23-9

18:59-05:05

1 stop21h 06m

HK$6,902

Hong KongChicago

HKG Hong Kong Intl - MDW Chicago Midway

HKGMDW

Hong Kong Intl

Thu 3-9

09:25-18:33

2 stops22h 08m

Chicago Midway

Wed 23-9

13:19-05:05

2 stops26h 46m

HK$6,902

Hong KongChicago

HKG Hong Kong Intl - MDW Chicago Midway

HKGMDW

Hong Kong Intl

Wed 23-9

12:20-22:44

2 stops23h 24m

Chicago Midway

Sat 3-10

09:59-05:05

2 stops30h 06m

HK$7,052

Hong KongChicago

HKG Hong Kong Intl - MDW Chicago Midway

HKGMDW

Hong Kong Intl

Wed 23-9

12:20-22:44

2 stops23h 24m

Chicago Midway

Sun 27-9

09:29-05:05

2 stops30h 36m

HK$7,052

Hong KongChicago

HKG Hong Kong Intl - MDW Chicago Midway

HKGMDW

Hong Kong Intl

Sun 13-9

12:20-22:44

2 stops23h 24m

Chicago Midway

Sun 20-9

09:29-22:45

2 stops24h 16m

HK$7,106

Hong KongChicago

HKG Hong Kong Intl - ORD Chicago O'Hare Intl

HKGORD

Hong Kong Intl

Thu 10-9

00:45-16:13

2 stops28h 28m

Chicago O'Hare Intl

Tue 22-9

07:07-05:05

1 stop32h 58m

HK$7,695

Hong KongChicago

HKG Hong Kong Intl - MDW Chicago Midway

HKGMDW

Hong Kong Intl

Thu 10-9

00:45-16:17

2 stops28h 32m

Chicago Midway

Tue 22-9

13:00-05:05

2 stops27h 05m

HK$7,695

Flights are sorted by cheapest return flights first.

Deals found on 13-8

Showing 1-10 of 27 resultsSorted by cheapest first
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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

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 20 hours 25 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 Monday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 on average).

What are the cheapest airlines that fly to Illinois?

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

Rainfall in Illinois 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

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

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

Boarding

8.5

Comfort

8.3

Entertainment

8.0

Crew

8.7

Food

8.1

Overall

8.5

Reviews

1 / 20
10.0
Excellent

Padma,Aug 2026

TPE - SFO

Great but could not allow me to do online booking

Boarding

8.5

Comfort

8.3

Entertainment

8.0

Crew

8.7

Food

8.1

Overall

8.5

Reviews

1 / 20
10.0
Excellent

Padma,Aug 2026

TPE - SFO

Great but could not allow me to do online booking

Boarding

8.5

Comfort

8.3

Entertainment

8.0

Crew

8.7

Food

8.1

Overall

8.5

Reviews

1 / 20
10.0
Excellent

Padma,Aug 2026

TPE - SFO

Great but could not allow me to do online booking

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$267, while return flights cost around HK$1,955.

  • How much is a return flight to Illinois?

    A return flight to Illinois will typically cost around HK$1,955, however they can be found for as little as HK$1,955.

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

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Users can book flights with no change fees policies with our dedicated filters. Book flights to Illinois flexibly with Cheapflights today.

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

Yes, Cheapflights offers price alerts on Illinois flights so you can book your flight when prices are ideal. Enable price alerts by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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