HK$3,436+ Cheap flights to Illinois

— ORD
29 Nov — 6 Dec1
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

Tue 24-1110:35 -
2 stops23h 46m
Tue 1-1209:21 -
2 stops31h 39m
Deal found 27-10HK$6,692
Thu 12-1110:35 -
2 stops21h 54m
Sun 15-1112:40 -
2 stops28h 20m
Deal found 29-10HK$6,943
Mon 2-1112:15 -
Nonstop14h 15m
Sun 15-1114:10 -
Nonstop15h 55m
Deal found 28-10HK$7,022
Thu 29-1022:45 -
1 stop20h 14m
Mon 2-1115:00 -
1 stop26h 00m
Deal found 29-10HK$7,077
Thu 19-1111:25 -
1 stop19h 35m
Mon 23-1106:00 -
1 stop23h 20m
Deal found 28-10HK$7,085
Thu 12-1111:25 -
1 stop19h 35m
Fri 27-1117:52 -
1 stop23h 08m
Deal found 29-10HK$7,304
Tue 27-1000:55 -
2 stops25h 04m
Sun 1-1110:35 -
2 stops31h 05m
Deal found 26-10HK$7,375
Sat 31-1009:45 -
2 stops27h 12m
Thu 15-418:30 -
1 stop21h 35m
Deal found 29-10HK$7,383
Sun 1-1110:45 -
1 stop27h 05m
Sun 8-1117:29 -
2 stops39h 41m
Deal found 30-10HK$7,626
Fri 6-1122:45 -
1 stop21h 13m
Fri 13-1106:00 -
1 stop23h 20m
Deal found 27-10HK$7,752

Find flight deals to Illinois

Return from

HK$6,692

One-way from

HK$3,436

Popular in

August

Cheapest in

April

Average price

HK$7,877

Good round-trip deal

HK$8,924 or less
United Airlines
  • United Airlines
  • 24-11-1-12
  • 4 total stops
  • 55h 25m total
  • Hong Kong to Chicago
Philippine Airlines
  • Philippine Airlines
  • 24-11-31-12
  • 1 total stop
  • 32h 00m total
  • Hong Kong to Illinois
Highest demand for flights based on searches. 19% potential increase in price (HK$2,288 potential increase over avg. return price).
Cheapest flight prices on average. 7% potential price decrease (HK$679 potential savings vs. average return price).
Average for return flights in October 2026
Price to beat on a round-trip flight from Hong Kong Intl to Illinois.

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

Mon 14-12

14:35-00:54

3 stops48h 19m

Chicago O'Hare Intl

Wed 31-12

00:00-14:00

Nonstop0h 00m

HK$4,237

Hong KongChicago

HKG Hong Kong Intl - ORD Chicago O'Hare Intl

HKGORD

Hong Kong Intl

Tue 24-11

22:30-05:47

1 stop21h 17m

Chicago O'Hare Intl

Tue 1-12

07:00-19:15

1 stop22h 15m

HK$7,085

Hong KongChicago

HKG Hong Kong Intl - ORD Chicago O'Hare Intl

HKGORD

Hong Kong Intl

Thu 24-12

10:45-20:18

2 stops23h 33m

Chicago O'Hare Intl

Thu 31-12

09:00-07:40

2 stops32h 40m

HK$7,085

Hong KongChicago

HKG Hong Kong Intl - ORD Chicago O'Hare Intl

HKGORD

Hong Kong Intl

Thu 19-11

11:25-17:00

1 stop19h 35m

Chicago O'Hare Intl

Mon 23-11

06:00-19:20

1 stop23h 20m

HK$7,085

Hong KongChicago

HKG Hong Kong Intl - ORD Chicago O'Hare Intl

HKGORD

Hong Kong Intl

Thu 12-11

10:45-18:30

2 stops21h 45m

Chicago O'Hare Intl

Fri 27-11

09:30-07:40

1 stop32h 10m

HK$7,383

Hong KongChicago

HKG Hong Kong Intl - ORD Chicago O'Hare Intl

HKGORD

Hong Kong Intl

Thu 28-1

12:35-21:36

2 stops23h 01m

Chicago O'Hare Intl

Thu 25-3

07:35-06:25

1 stop33h 50m

HK$7,493

Hong KongChicago

HKG Hong Kong Intl - ORD Chicago O'Hare Intl

HKGORD

Hong Kong Intl

Tue 30-3

09:25-20:37

2 stops24h 12m

Chicago O'Hare Intl

Mon 5-4

18:30-05:05

1 stop21h 35m

HK$7,500
Fastest return journey

Hong KongChicago

HKG Hong Kong Intl - ORD Chicago O'Hare Intl

HKGORD

Hong Kong Intl

Thu 19-11

12:15-12:30

Nonstop14h 15m

Chicago O'Hare Intl

Mon 23-11

14:10-20:05

Nonstop15h 55m

HK$8,332

Flights are sorted by cheapest return flights first.

Deals found on 25-10

Sorted by cheapest first

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 19 hours 2 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.

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.

Food

8.1

Entertainment

8.0

Crew

8.7

Overall

8.5

Boarding

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Padma,Aug 2026

TPE - SFO

Great but could not allow me to do online booking

Food

8.1

Entertainment

8.0

Crew

8.7

Overall

8.5

Boarding

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Padma,Aug 2026

TPE - SFO

Great but could not allow me to do online booking

Food

8.1

Entertainment

8.0

Crew

8.7

Overall

8.5

Boarding

8.4

Comfort

8.3

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$1,956.

  • How much is a return flight to Illinois?

    A return flight to Illinois will typically cost around HK$1,956, however they can be found for as little as HK$1,956.

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

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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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