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S$ 621+ 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 29-5. Fares are subject to change and may not be available on all flights or dates of travel.
— ORD
17 Apr — 24 Apr1
1 adult

Flights to Illinois in 2025

Find the latest flights to Illinois in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 200,618 searches and data was last updated on 12 April 2025.

Return from

S$ 1,163

One-way from

S$ 621

Popular in

August

Cheapest in

February

Average price

S$ 1,356
Air Canada
  • Air Canada
  • 24-6-23-7
  • 3 total stops
  • 88h 41m total
  • Singapore to Chicago
29-5
  • 29-5
  • 3 total stops
  • 57h 57m total
  • Singapore to Illinois
Highest demand for flights based on searches. 8% potential increase in price (S$ 204 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (S$ 47 potential savings vs. average return price).
Average for return flights in April 2025

Find flight deals to Illinois

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 12 April 2025.

Mon 27-1021:00SIN - ORD
2 stops30h 39mAir Canada
Thu 13-1107:20ORD - SIN
2 stops34h 35mAir Canada
Deal found 11-4S$ 1,121
Sat 12-420:05SIN - ORD
1 stop31h 20mCathay Pacific
Fri 25-416:00ORD - SIN
1 stop39h 35mCathay Pacific
Deal found 11-4S$ 1,200
Fri 5-1210:10SIN - ORD
1 stop26h 27mUnited Airlines
Mon 5-122:00ORD - SIN
1 stop32h 15mUnited Airlines
Deal found 11-4S$ 1,228
Sun 26-1001:30SIN - ORD
1 stop21h 00mKorean Air
Thu 13-1111:05ORD - SIN
1 stop23h 05mKorean Air
Deal found 11-4S$ 1,230
Mon 1-1201:30SIN - ORD
2 stops32h 17mDelta
Mon 5-107:30ORD - SIN
2 stops31h 30mDelta
Deal found 11-4S$ 1,271
Tue 24-620:30SIN - ORD
1 stop23h 55mAir India
Wed 23-712:00ORD - SIN
1 stop30h 30mAir India
Deal found 11-4S$ 1,348
Mon 12-515:10SIN - ORD
2 stops27h 55mMultiple Airlines
Sat 17-519:59ORD - SIN
2 stops27h 01mMultiple Airlines
Deal found 11-4S$ 1,356
Fri 6-608:05SIN - ORD
1 stop20h 55mJapan Airlines
Tue 10-601:30ORD - SIN
1 stop27h 00mJapan Airlines
Deal found 11-4S$ 1,468
Sun 25-503:10SIN - ORD
1 stop24h 55mQatar Airways
Mon 2-616:44ORD - SIN
2 stops34h 01mQatar Airways
Deal found 10-4S$ 1,530
Mon 26-523:30SIN - ORD
1 stop26h 20mSWISS
Mon 2-620:15ORD - SIN
2 stops31h 50mSWISS
Deal found 10-4S$ 1,591
Tue 24-615:10SIN - ORD
2 stops27h 35mEVA Air
Tue 22-700:30ORD - SIN
1 stop24h 20mEVA Air
Deal found 11-4S$ 1,595
Fri 6-608:05SIN - ORD
2 stops24h 51mAmerican Airlines
Tue 10-601:30ORD - SIN
1 stop27h 00mAmerican Airlines
Deal found 11-4S$ 1,600

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 200,618 searches and data was last updated on 12 April 2025.
Use the filters below to find and compare flights to Illinois that are best for you.

Fly from

Singapore

Route

Depart

Return

Price

SingaporeChicago

SIN - ORD

SINORD

Singapore Changi

Tue 24-6

09:10-14:49

1 stop42h 39m

Chicago O'Hare Intl

Wed 23-7

20:03-07:05

2 stops46h 02m

S$ 1,163

SingaporeChicago

SIN - ORD

SINORD

Singapore Changi

Mon 12-5

09:00-19:39

1 stop23h 39m

Chicago O'Hare Intl

Sat 17-5

20:30-18:25

1 stop32h 55m

S$ 1,228

SingaporeChicago

SIN - ORD

SINORD

Singapore Changi

Tue 24-6

20:30-07:25

1 stop23h 55m

Chicago O'Hare Intl

Wed 23-7

12:00-07:30

1 stop30h 30m

S$ 1,348

SingaporeChicago

SIN - ORD

SINORD

Singapore Changi

Mon 12-5

15:10-06:05

2 stops27h 55m

Chicago O'Hare Intl

Sat 17-5

19:59-12:00

2 stops27h 01m

S$ 1,356

SingaporeChicago

SIN - ORD

SINORD

Singapore Changi

Mon 23-6

01:50-14:25

1 stop25h 35m

Chicago O'Hare Intl

Wed 23-7

16:00-05:30

1 stop24h 30m

S$ 1,405

SingaporeChicago

SIN - ORD

SINORD

Singapore Changi

Fri 6-6

08:05-16:00

1 stop20h 55m

Chicago O'Hare Intl

Tue 10-6

01:30-17:30

1 stop27h 00m

S$ 1,468

SingaporeChicago

SIN - ORD

SINORD

Singapore Changi

Sun 25-5

03:10-15:05

1 stop24h 55m

Chicago O'Hare Intl

Mon 2-6

16:44-15:45

2 stops34h 01m

S$ 1,530

SingaporeChicago

SIN - ORD

SINORD

Singapore Changi

Mon 26-5

23:30-12:50

1 stop26h 20m

Chicago O'Hare Intl

Mon 2-6

20:15-17:05

2 stops31h 50m

S$ 1,590

SingaporeChicago

SIN - ORD

SINORD

Singapore Changi

Tue 24-6

15:10-05:45

2 stops27h 35m

Chicago O'Hare Intl

Tue 22-7

00:30-13:50

1 stop24h 20m

S$ 1,595

SingaporeChicago

SIN - ORD

SINORD

Singapore Changi

Fri 6-6

08:05-19:56

2 stops24h 51m

Chicago O'Hare Intl

Tue 10-6

01:30-17:30

1 stop27h 00m

S$ 1,600

Flights are sorted by cheapest return flights first.

Deals found on 11-4

Showing 1-10 of 36 results
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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
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 Singapore to Illinois takes 24 hours 5 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 United Airlines, Cathay Pacific and Korean Air.

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).

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

Destination popularity is based on the amount of flight searches to Illinois in the last few years. This data was updated on 12 April 2025.
The most popular places in Illinois to fly to are Chicago and Champaign.

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 12 April 2025.
Read reviews from past customers who have flown EVA Air, Korean Air and Japan Airlines to Illinois. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.6

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Food

8.1

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Crew

8.6

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Food

8.1

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Crew

8.6

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Food

8.1

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Crew

8.6

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Food

8.1

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
8.3
Very Good

Crew

8.6

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Food

8.1

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Crew

8.6

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Food

8.1

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

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$ 97, while return flights cost around S$ 207.

  • How much is a return flight to Illinois?

    A return flight to Illinois will typically cost around S$ 214, however they can be found for as little as S$ 156.

  • 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 (21 hours 28 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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