HK$3,966+ 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 28-8. Fares are subject to change and may not be available on all flights or dates of travel.
— ORD
18 Apr — 25 Apr1
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
Explore the most affordable flight options available to Illinois. Find the lowest fares based on data from user searches, with prices last updated on 19 March 2026.

Fri 12-609:25
HKG
-
ORD
1 stop27h 20m
Delta
Fri 6-1114:55
ORD
-
HKG
1 stop25h 10m
Delta
Deal found 17-3HK$5,510
Mon 1-612:20
HKG
-
ORD
2 stops36h 32m
Delta
Thu 17-907:10
ORD
-
HKG
2 stops26h 35m
Delta
Deal found 17-3HK$5,541
Wed 7-1015:25
HKG
-
ORD
1 stop18h 20m
EVA Air
Thu 22-1000:30
ORD
-
HKG
1 stop29h 00m
EVA Air
Deal found 15-3HK$6,231
Wed 7-1019:40
HKG
-
ORD
2 stops24h 20m
Multiple Airlines
Fri 23-1020:42
ORD
-
HKG
2 stops24h 28m
Multiple Airlines
Deal found 15-3HK$6,427
Thu 8-1021:45
HKG
-
ORD
1 stop36h 00m
Multiple Airlines
Fri 16-1015:09
ORD
-
HKG
2 stops28h 41m
Multiple Airlines
Deal found 16-3HK$6,458
Thu 8-1021:45
HKG
-
ORD
1 stop36h 00m
EVA Air
Thu 15-1000:30
ORD
-
HKG
1 stop20h 35m
EVA Air
Deal found 16-3HK$6,497
Thu 30-417:55
HKG
-
ORD
2 stops43h 03m
Delta
Tue 25-818:30
ORD
-
HKG
1 stop21h 35m
Delta
Deal found 17-3HK$6,591
Wed 7-1009:25
HKG
-
ORD
2 stops25h 28m
Delta
Fri 23-1013:35
ORD
-
HKG
2 stops26h 30m
Delta
Deal found 18-3HK$6,607
Mon 9-1118:10
HKG
-
ORD
1 stop28h 20m
Korean Air
Thu 12-1111:15
ORD
-
HKG
1 stop21h 55m
Korean Air
Deal found 15-3HK$6,615
Thu 8-1009:25
HKG
-
MDW
2 stops25h 20m
Delta
Fri 16-1013:00
MDW
-
HKG
2 stops27h 05m
Delta
Deal found 16-3HK$6,615
Wed 29-420:10
HKG
-
MDW
2 stops22h 30m
Multiple Airlines
Wed 6-515:55
MDW
-
HKG
2 stops29h 10m
Multiple Airlines
Deal found 15-3HK$7,164
Sun 7-600:45
HKG
-
MDW
2 stops24h 11m
Delta
Mon 7-910:35
MDW
-
HKG
2 stops29h 30m
Delta
Deal found 18-3HK$7,979

Find flights to Illinois

Browse one-way and return flights deals to Illinois on Cheapflights. Flight deals are based on user searches and were last updated on 19 March 2026
Explore Illinois

Find flight deals to Illinois

Find the latest flights to Illinois in 2026, 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 19 March 2026.

Return from

HK$5,510

One-way from

HK$3,966

Popular in

July

Cheapest in

September

Average price

HK$6,858

Good round-trip deal

HK$6,814 or less
Delta
  • Delta
  • 12-6-6-11
  • 2 total stops
  • 52h 30m total
  • Hong Kong to Chicago
28-8
  • 28-8
  • 3 total stops
  • 31h 14m total
  • Hong Kong to Illinois
Highest demand for flights based on searches. 22% potential increase in price (HK$2,497 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease (HK$377 potential savings vs. average return price).
Average for return flights in March 2026
Price to beat on a round-trip flight from Hong Kong Intl to Illinois.

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 19 March 2026.
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 - ORD

HKGORD

Hong Kong Intl

Fri 12-6

09:25-23:45

1 stop27h 20m

Chicago O'Hare Intl

Fri 6-11

14:55-06:05

1 stop25h 10m

HK$5,510

Hong KongChicago

HKG - ORD

HKGORD

Hong Kong Intl

Mon 1-6

12:20-11:52

2 stops36h 32m

Chicago O'Hare Intl

Thu 17-9

07:10-22:45

2 stops26h 35m

HK$5,541

Hong KongChicago

HKG - MDW

HKGMDW

Hong Kong Intl

Wed 29-4

20:10-05:40

2 stops22h 30m

Chicago Midway

Wed 6-5

15:55-10:05

2 stops29h 10m

HK$7,164

Hong KongChicago

HKG - ORD

HKGORD

Hong Kong Intl

Tue 28-4

00:45-23:58

2 stops36h 13m

Chicago O'Hare Intl

Wed 6-5

07:15-22:45

2 stops26h 30m

HK$7,446

Hong KongChicago

HKG - ORD

HKGORD

Hong Kong Intl

Mon 1-6

10:10-21:00

1 stop23h 50m

Chicago O'Hare Intl

Wed 16-9

00:30-19:55

1 stop30h 25m

HK$7,516

Hong KongChicago

HKG - ORD

HKGORD

Hong Kong Intl

Sun 21-6

01:25-15:05

1 stop26h 40m

Chicago O'Hare Intl

Fri 14-8

19:20-21:55

1 stop37h 35m

HK$7,704

Hong KongChicago

HKG - MDW

HKGMDW

Hong Kong Intl

Tue 9-6

09:25-18:31

2 stops22h 06m

Chicago Midway

Mon 7-9

13:05-05:05

2 stops27h 00m

HK$8,041

Hong KongChicago

HKG - ORD

HKGORD

Hong Kong Intl

Thu 23-4

00:55-15:05

1 stop27h 10m

Chicago O'Hare Intl

Thu 11-6

19:20-23:20

1 stop39h 00m

HK$8,261

Hong KongChicago

HKG - MDW

HKGMDW

Hong Kong Intl

Mon 27-4

00:45-16:26

2 stops28h 41m

Chicago Midway

Tue 5-5

06:00-22:45

2 stops27h 45m

HK$8,300

Hong KongChicago

HKG - MDW

HKGMDW

Hong Kong Intl

Mon 20-4

17:55-16:26

2 stops35h 31m

Chicago Midway

Thu 30-4

19:16-22:45

2 stops38h 29m

HK$8,300

Flights are sorted by cheapest return flights first.

Deals found on 14-3

Showing 1-10 of 25 resultsSorted by cheapest first
1
2
3

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 30 hours 30 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 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 19 March 2026.
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.

Entertainment

8.0

Overall

8.5

Boarding

8.4

Food

8.1

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

TPE - SFO

Why when we’re about to board they suddenly announced the letters ABC to board first .. so what is the use us waiting at the door (with wheelchairs) ended up almost at the end to board and I can see people walking boarding first? Is this something new? You go by letters now?

Entertainment

8.0

Overall

8.5

Boarding

8.4

Food

8.1

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

TPE - SFO

Why when we’re about to board they suddenly announced the letters ABC to board first .. so what is the use us waiting at the door (with wheelchairs) ended up almost at the end to board and I can see people walking boarding first? Is this something new? You go by letters now?

Entertainment

8.0

Overall

8.5

Boarding

8.4

Food

8.1

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

TPE - SFO

Why when we’re about to board they suddenly announced the letters ABC to board first .. so what is the use us waiting at the door (with wheelchairs) ended up almost at the end to board and I can see people walking boarding first? Is this something new? You go by letters now?

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$220, while return flights cost around HK$1,950.

  • How much is a return flight to Illinois?

    A return flight to Illinois will typically cost around HK$1,954, however they can be found for as little as HK$1,954.

  • 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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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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