This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 30-4. Fares are subject to change and may not be available on all flights or dates of travel.
— ORD
4 Dec — 11 Dec1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Flights to Illinois in 2026
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Best
Direct
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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 4 November 2026.
Tue 3-1112:35 -
2 stops22h 52m
Mon 9-1118:28 -
1 stop23h 12m
Deal found 1-11HK$7,069
Mon 2-1110:45 -
1 stop19h 00m
Tue 10-1114:03 -
2 stops27h 37m
Deal found 1-11HK$7,084
Tue 1-1200:55 -
2 stops35h 01m
Wed 9-1207:05 -
2 stops26h 05m
Deal found 1-11HK$7,132
Fri 13-1110:45 -
2 stops33h 04m
Sun 22-1115:30 -
2 stops41h 40m
Deal found 2-11HK$7,226
Thu 12-1122:45 -
1 stop20h 35m
Fri 27-1120:29 -
1 stop32h 51m
Deal found 1-11HK$7,312
Thu 3-1200:55 -
2 stops33h 06m
Sun 6-1211:05 -
2 stops52h 05m
Deal found 1-11HK$7,320
Thu 3-1200:55 -
2 stops33h 06m
Thu 10-1208:49 -
2 stops24h 01m
Deal found 1-11HK$7,351
Tue 3-1100:55 -
2 stops35h 10m
Sun 8-1114:03 -
2 stops27h 37m
Deal found 1-11HK$7,375
Fri 6-1110:45 -
1 stop19h 00m
Tue 10-1107:45 -
1 stop33h 55m
Deal found 1-11HK$7,383
Wed 11-1110:45 -
2 stops44h 05m
Sun 15-1107:05 -
2 stops25h 45m
Deal found 1-11HK$7,390
Thu 12-1112:15 -
Nonstop14h 15m
Fri 27-1114:10 -
Nonstop15h 55m
Deal found 1-11HK$7,414
Best flights to Illinois
Discover carefully curated flight deals to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 4 November 2026.
Thu 19-1111:25 -
1 stop19h 35m
Mon 23-1106:00 -
1 stop23h 20m
Deal found 30-10HK$7,084
Wed 23-1210:45 -
2 stops25h 42m
Fri 8-114:22 -
1 stop27h 18m
Deal found 31-10HK$7,383
Thu 19-1112:15 -
Nonstop14h 15m
Mon 23-1114:10 -
Nonstop15h 55m
Deal found 30-10HK$8,332
Fri 20-1111:25 -
1 stop24h 35m
Sun 29-1120:11 -
1 stop33h 04m
Deal found 3-11HK$7,383
Thu 12-1110:45 -
2 stops21h 45m
Fri 27-1109:30 -
1 stop32h 10m
Deal found 1-11HK$7,383
Sat 14-1110:35 -
1 stop26h 52m
Sun 22-1121:57 -
1 stop31h 23m
Deal found 2-11HK$7,383
Sat 12-1210:35 -
2 stops22h 17m
Sat 2-122:00 -
2 stops31h 20m
Deal found 1-11HK$8,787
Direct flights to Illinois
Explore direct flight options to Illinois based on user searches, and compare prices and availability for your desired travel dates. Data last updated 4 November 2026.
Thu 12-1112:15 -
Nonstop14h 15m
Fri 27-1114:10 -
Nonstop15h 55m
Deal found 1-11HK$7,414
Wed 11-1112:15 -
Nonstop14h 15m
Sun 15-1114:10 -
Nonstop15h 55m
Deal found 2-11HK$7,437
Sat 7-1112:15 -
Nonstop14h 15m
Fri 13-1114:10 -
Nonstop15h 55m
Deal found 1-11HK$8,042
Wed 23-1212:15 -
Nonstop14h 15m
Fri 8-114:10 -
Nonstop15h 55m
Deal found 31-10HK$8,191
Thu 19-1112:15 -
Nonstop14h 15m
Mon 23-1114:10 -
Nonstop15h 55m
Deal found 30-10HK$8,332
Tue 22-1212:15 -
Nonstop14h 15m
Sat 2-114:10 -
Nonstop15h 55m
Deal found 3-11HK$8,803
Fri 20-1112:15 -
Nonstop14h 15m
Sun 29-1114:10 -
Nonstop15h 55m
Deal found 3-11HK$8,818
Tue 22-1212:15 -
Nonstop14h 15m
Wed 30-1214:10 -
Nonstop15h 55m
Deal found 1-11HK$10,387
Fri 13-1112:15 -
Nonstop14h 15m
Sun 22-1114:10 -
Nonstop15h 55m
Deal found 2-11HK$10,458
Sat 12-1212:15 -
Nonstop14h 15m
Sat 2-114:10 -
Nonstop15h 55m
Deal found 1-11HK$10,897
Sat 7-1112:15 -
Nonstop14h 15m
Sun 8-1114:10 -
Nonstop15h 55m
Deal found 1-11HK$10,991
Last-minute flights to Illinois
Discover last-minute flight deals to Illinois. Data last updated 4 November 2026 and is based on user searches.
Tue 3-1100:55 -
2 stops35h 10m
Tue 10-1114:03 -
2 stops27h 37m
Deal found 1-11HK$7,069
Tue 3-1100:55 -
2 stops35h 10m
Sat 14-1116:00 -
2 stops25h 40m
Deal found 1-11HK$7,375
Thu 5-1122:30 -
1 stop20h 32m
Tue 10-1107:35 -
1 stop21h 45m
Deal found 1-11HK$7,084
Fri 6-1110:45 -
2 stops24h 42m
Mon 9-1114:44 -
2 stops26h 56m
Deal found 1-11HK$7,383
Wed 11-1110:45 -
2 stops44h 05m
Sun 15-1107:05 -
2 stops25h 45m
Deal found 1-11HK$7,390
Thu 12-1118:05 -
2 stops44h 02m
Mon 16-1111:20 -
2 stops44h 20m
Deal found 30-10HK$9,924
Thu 12-1122:45 -
1 stop20h 35m
Fri 27-1120:29 -
1 stop32h 51m
Deal found 1-11HK$7,312
Thu 12-1112:15 -
Nonstop14h 15m
Fri 27-1114:10 -
Nonstop15h 55m
Deal found 1-11HK$7,414
Fri 13-1110:45 -
2 stops33h 04m
Sun 22-1115:30 -
2 stops41h 40m
Deal found 2-11HK$7,226
Tue 1-1200:55 -
2 stops35h 01m
Wed 9-1207:05 -
2 stops26h 05m
Deal found 1-11HK$7,132
Thu 3-1200:55 -
2 stops33h 06m
Sun 6-1211:05 -
2 stops52h 05m
Deal found 1-11HK$7,320
Thu 3-1200:55 -
2 stops33h 06m
Thu 10-1208:49 -
2 stops24h 01m
Deal found 1-11HK$7,351
One-way flights to Illinois
Search for one-way flight options to Illinois. Find affordable one-way fares based on user searches. Data last updated 4 November 2026.
Fri 30-413:20 -
1 stop17h 35m
Wed 31-1200:00 -
Nonstop0h 00m
Deal found 31-10HK$3,436
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 7,457,451 searches and data was last updated on 4 November 2026.
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 7,457,451 searches and data was last updated on 4 November 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
Fastest return journey
Hong KongChicago
HKG Hong Kong Intl - ORD Chicago O'Hare Intl
HKGORD
Hong Kong Intl
Wed 25-11
13:30-19:35
1 stop20h 05m
Chicago O'Hare Intl
Wed 31-12
00:00-14:00
Nonstop0h 00m
HK$4,692
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$7,084
Hong KongChicago
HKG Hong Kong Intl - ORD Chicago O'Hare Intl
HKGORD
Hong Kong Intl
Wed 23-12
10:45-22:27
2 stops25h 42m
Chicago O'Hare Intl
Fri 8-1
14:22-07:40
1 stop27h 18m
HK$7,383
Hong KongChicago
HKG Hong Kong Intl - ORD Chicago O'Hare Intl
HKGORD
Hong Kong Intl
Fri 20-11
11:25-22:00
1 stop24h 35m
Chicago O'Hare Intl
Sun 29-11
20:11-19:15
1 stop33h 04m
HK$7,383
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
Sat 14-11
10:35-23:27
1 stop26h 52m
Chicago O'Hare Intl
Sun 22-11
21:57-19:20
1 stop31h 23m
HK$7,383
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
Hong KongChicago
HKG Hong Kong Intl - ORD Chicago O'Hare Intl
HKGORD
Hong Kong Intl
Sat 12-12
10:35-18:52
2 stops22h 17m
Chicago O'Hare Intl
Sat 2-1
22:00-19:20
2 stops31h 20m
HK$8,787
Flights are sorted by cheapest return flights first.
Deals found on 31-10
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.
HKG-ORD
HKG-MLI
HKG-PIA
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
HKG-USIL
HKG-ORD
HKG-MLI
HKG-PIA
How long is the flight to Illinois?
On average, a flight from Hong Kong to Illinois takes 17 hours 47 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 most popular airlines that fly to Illinois?
The most popular airlines flying from Hong Kong to Illinois are Cathay Pacific and EVA Air.
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 4 November 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.
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.
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.
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.
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.
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).
Not sure where to visit in United States? Start by selecting one of the most popular places in United States below to filter down your possible destination.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights to Illinois?
Cheapflights helps you search for flights to Illinois via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.
Why should you use Cheapflights to find cheap flight tickets to Illinois?
Cheapflights simply makes it quick and affordable to book flights to Illinois by bringing together all flight options from hundreds of airlines and agencies online — and we put them in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.
Can Cheapflights find flights to Illinois with no change fees?
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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