S$ 567+ Cheap flights to Illinois

— ORD
26 Sep — 3 Oct1
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 11-1007:00 -
1 stop20h 43m
Sun 18-1015:40 -
1 stop24h 35m
Deal found 26-8S$ 945
Sat 3-1007:00 -
1 stop20h 43m
Sun 18-1008:49 -
1 stop31h 26m
Deal found 26-8S$ 954
Thu 15-1007:00 -
1 stop20h 43m
Wed 28-1008:40 -
2 stops33h 20m
Deal found 24-8S$ 975
Sun 18-1007:00 -
1 stop20h 43m
Thu 29-1015:30 -
1 stop26h 30m
Deal found 26-8S$ 992
Thu 8-1007:00 -
1 stop20h 43m
Thu 15-1015:40 -
1 stop24h 35m
Deal found 24-8S$ 995
Mon 21-901:25 -
2 stops30h 08m
Tue 29-909:59 -
2 stops24h 56m
Deal found 25-8S$ 1,438
Sat 3-1001:25 -
2 stops34h 19m
Sun 11-1010:01 -
2 stops29h 59m
Deal found 22-8S$ 1,440
Mon 21-907:30 -
2 stops39h 19m
Sun 27-919:01 -
2 stops39h 54m
Deal found 25-8S$ 1,522
Wed 14-1001:25 -
2 stops34h 08m
Wed 28-1009:29 -
2 stops30h 31m
Deal found 24-8S$ 1,536
Sat 5-913:55 -
2 stops35h 45m
Tue 8-921:00 -
2 stops26h 30m
Deal found 22-8S$ 1,539
Sun 4-1013:55 -
2 stops29h 10m
Sat 10-1019:45 -
2 stops27h 45m
Deal found 24-8S$ 1,540
Wed 23-913:55 -
2 stops29h 00m
Wed 30-917:15 -
2 stops30h 15m
Deal found 26-8S$ 1,544

Find flights to Illinois

Explore Illinois

Find flight deals to Illinois

Return from

S$ 945

One-way from

S$ 567

Popular in

August

Cheapest in

September

Average price

S$ 2,610
Air Canada
  • Air Canada
  • 11-10-18-10
  • 2 total stops
  • 45h 18m total
  • Singapore to Chicago
Air Canada
  • Air Canada
  • 26-11
  • 1 total stop
  • 19h 57m total
  • Singapore to Illinois
Highest demand for flights based on searches. 14% potential increase in price (S$ 256 potential increase over avg. return price).
Cheapest flight prices on average. 8% potential price decrease (S$ 114 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

Depart

Return

Price

Cheapest return flight
Fastest return journey

SingaporeChicago

SIN Singapore Changi - ORD Chicago O'Hare Intl

SINORD

Singapore Changi

Sun 11-10

07:00-14:43

1 stop20h 43m

Chicago O'Hare Intl

Sun 18-10

15:40-05:15

1 stop24h 35m

S$ 945

SingaporeChicago

SIN Singapore Changi - ORD Chicago O'Hare Intl

SINORD

Singapore Changi

Thu 21-1

08:40-19:58

2 stops25h 18m

Chicago O'Hare Intl

Mon 15-2

08:45-06:55

2 stops32h 10m

S$ 1,029

SingaporeChicago

SIN Singapore Changi - ORD Chicago O'Hare Intl

SINORD

Singapore Changi

Wed 23-9

21:00-08:35

1 stop24h 35m

Chicago O'Hare Intl

Wed 30-9

20:25-09:40

1 stop24h 15m

S$ 1,222

SingaporeChicago

SIN Singapore Changi - ORD Chicago O'Hare Intl

SINORD

Singapore Changi

Thu 5-11

19:25-07:55

1 stop26h 30m

Chicago O'Hare Intl

Mon 9-11

13:10-09:35

1 stop30h 25m

S$ 1,234

SingaporeChicago

SIN Singapore Changi - ORD Chicago O'Hare Intl

SINORD

Singapore Changi

Thu 24-12

19:25-07:55

1 stop26h 30m

Chicago O'Hare Intl

Wed 30-12

13:10-09:35

1 stop30h 25m

S$ 1,352

SingaporeChicago

SIN Singapore Changi - MDW Chicago Midway

SINMDW

Singapore Changi

Sat 3-10

01:25-22:44

2 stops34h 19m

Chicago Midway

Sun 11-10

10:01-05:00

2 stops29h 59m

S$ 1,440

SingaporeChicago

SIN Singapore Changi - ORD Chicago O'Hare Intl

SINORD

Singapore Changi

Tue 8-9

06:20-20:45

3 stops27h 25m

Chicago O'Hare Intl

Thu 10-9

00:30-18:45

2 stops29h 15m

S$ 1,464

SingaporeChicago

SIN Singapore Changi - MDW Chicago Midway

SINMDW

Singapore Changi

Wed 14-10

01:25-22:33

2 stops34h 08m

Chicago Midway

Wed 28-10

09:29-05:00

2 stops30h 31m

S$ 1,536

SingaporeChicago

SIN Singapore Changi - MDW Chicago Midway

SINMDW

Singapore Changi

Sat 17-10

13:55-11:25

2 stops34h 30m

Chicago Midway

Wed 28-10

15:35-13:05

2 stops32h 30m

S$ 1,540

SingaporeChicago

SIN Singapore Changi - MDW Chicago Midway

SINMDW

Singapore Changi

Sun 4-10

13:55-06:05

2 stops29h 10m

Chicago Midway

Sat 10-10

19:45-12:30

2 stops27h 45m

S$ 1,540

Flights are sorted by cheapest return flights first.

Deals found on 24-8

Showing 1-10 of 21 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 Singapore to Illinois takes 24 hours 26 minutes. Flights to Illinois from other popular cities in Singapore 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 Singapore to Illinois are Korean Air, United Airlines and EVA Air.

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).

What are the most popular places to fly to in Illinois?

The most popular places in Illinois to fly to are Chicago and Champaign.

Reviews of airlines servicing Illinois

Check out reviews from past customers who have flown EVA Air,Korean Air, andJapan Airlines to the United States to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.5

Entertainment

8.0

Food

8.1

Comfort

8.3

Overall

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Padma,Aug 2026

TPE - SFO

Great but could not allow me to do online booking

Boarding

8.5

Entertainment

8.0

Food

8.1

Comfort

8.3

Overall

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Padma,Aug 2026

TPE - SFO

Great but could not allow me to do online booking

Boarding

8.5

Entertainment

8.0

Food

8.1

Comfort

8.3

Overall

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Padma,Aug 2026

TPE - SFO

Great but could not allow me to do online booking

Boarding

8.5

Entertainment

8.0

Food

8.1

Comfort

8.3

Overall

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Padma,Aug 2026

TPE - SFO

Great but could not allow me to do online booking

Boarding

8.5

Entertainment

8.0

Food

8.1

Comfort

8.3

Overall

8.5

Crew

8.7

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, United Airlines 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 S$ 220, while return flights cost around S$ 463.

  • How much is a return flight to Illinois?

    A return flight to Illinois will typically cost around S$ 518, however they can be found for as little as S$ 463.

  • Where does the fastest flight to Illinois depart from?

    For those looking to save time traveling to Illinois, Singapore Changi offers the quickest one-way flight (19 hours 52 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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Deals for Illinois flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose to your preference, such as price, airport, cabin class, and plenty of other options.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights 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.

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Yes, Cheapflights has a feature called Price Alerts, which notifies users when flight prices change. Track prices for your flight to Illinois today and book when you’re ready!

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