S$ 670+ 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 4-4. Fares are subject to change and may not be available on all flights or dates of travel.
— ORD
31 Mar — 7 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 1 March 2026.

Thu 23-406:15
SIN
-
ORD
1 stop21h 40m
ANA
Mon 27-411:50
ORD
-
SIN
1 stop22h 30m
ANA
Deal found 28-2S$ 1,044
Tue 14-411:05
SIN
-
ORD
1 stop34h 35m
ANA
Thu 16-417:45
ORD
-
SIN
1 stop34h 30m
ANA
Deal found 27-2S$ 1,046
Thu 23-411:00
SIN
-
ORD
2 stops34h 35m
Multiple Airlines
Mon 27-405:15
ORD
-
SIN
2 stops34h 45m
Multiple Airlines
Deal found 28-2S$ 1,164
Tue 21-409:45
SIN
-
ORD
2 stops35h 50m
Multiple Airlines
Sun 26-413:10
ORD
-
SIN
1 stop43h 35m
Multiple Airlines
Deal found 27-2S$ 1,180
Tue 15-1210:10
SIN
-
ORD
1 stop26h 45m
United Airlines
Thu 7-106:25
ORD
-
SIN
1 stop23h 50m
United Airlines
Deal found 25-2S$ 1,203
Thu 2-409:00
SIN
-
ORD
1 stop22h 48m
United Airlines
Mon 6-406:25
ORD
-
SIN
1 stop23h 10m
United Airlines
Deal found 27-2S$ 1,205
Mon 9-310:10
SIN
-
ORD
1 stop23h 05m
United Airlines
Sun 22-321:15
ORD
-
SIN
1 stop34h 00m
United Airlines
Deal found 1-3S$ 1,208
Fri 6-310:10
SIN
-
ORD
1 stop20h 52m
United Airlines
Sun 22-321:15
ORD
-
SIN
1 stop34h 00m
United Airlines
Deal found 28-2S$ 1,218
Mon 20-401:25
SIN
-
MDW
2 stops28h 01m
Delta
Sun 26-409:27
MDW
-
SIN
2 stops30h 33m
Delta
Deal found 27-2S$ 1,363
Tue 14-413:45
SIN
-
MDW
2 stops28h 55m
Multiple Airlines
Thu 16-411:00
MDW
-
SIN
2 stops36h 35m
Multiple Airlines
Deal found 27-2S$ 1,462
Fri 6-314:25
SIN
-
MDW
2 stops29h 30m
Multiple Airlines
Sun 22-310:45
MDW
-
SIN
2 stops37h 20m
Multiple Airlines
Deal found 28-2S$ 1,485
Mon 9-314:25
SIN
-
MDW
2 stops34h 15m
Multiple Airlines
Sun 22-310:45
MDW
-
SIN
2 stops37h 20m
Multiple Airlines
Deal found 1-3S$ 1,487

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 1 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 200,618 searches and data was last updated on 1 March 2026.

Return from

S$ 1,044

One-way from

S$ 670

Popular in

January

Cheapest in

February

Average price

S$ 1,360
ANA
  • ANA
  • 23-4-27-4
  • 2 total stops
  • 44h 10m total
  • Singapore to Chicago
4-4
  • 4-4
  • 2 total stops
  • 58h 35m total
  • Singapore to Illinois
Highest demand for flights based on searches. 3% potential increase in price (S$ 46 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (S$ 44 potential savings vs. average return price).
Average for return flights in March 2026

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 1 March 2026.
Use the filters below to find and compare flights to Illinois that are best for you.

Fly from

Route

Depart

Return

Price

SingaporeChicago

SIN - ORD

SINORD

Singapore Changi

Thu 2-4

09:00-05:27

1 stop33h 27m

Chicago O'Hare Intl

Mon 6-4

21:40-18:35

1 stop31h 55m

S$ 1,207

SingaporeChicago

SIN - ORD

SINORD

Singapore Changi

Mon 13-4

09:00-20:47

1 stop24h 47m

Chicago O'Hare Intl

Mon 20-4

22:45-18:35

1 stop30h 50m

S$ 1,207

SingaporeChicago

SIN - ORD

SINORD

Singapore Changi

Tue 14-4

01:25-21:18

2 stops32h 53m

Chicago O'Hare Intl

Wed 22-4

05:15-23:55

2 stops29h 40m

S$ 1,224

SingaporeChicago

SIN - ORD

SINORD

Singapore Changi

Sun 12-4

20:35-07:07

1 stop23h 32m

Chicago O'Hare Intl

Sun 19-4

18:20-06:45

1 stop23h 25m

S$ 1,334

SingaporeChicago

SIN - MDW

SINMDW

Singapore Changi

Mon 20-4

01:25-16:26

2 stops28h 01m

Chicago Midway

Sun 26-4

09:27-05:00

2 stops30h 33m

S$ 1,363

SingaporeChicago

SIN - ORD

SINORD

Singapore Changi

Sat 15-8

13:45-06:20

2 stops29h 35m

Chicago O'Hare Intl

Sun 30-8

20:42-12:35

2 stops26h 53m

S$ 1,422

SingaporeChicago

SIN - ORD

SINORD

Singapore Changi

Thu 4-6

13:45-06:20

2 stops29h 35m

Chicago O'Hare Intl

Thu 11-6

17:39-12:35

2 stops29h 56m

S$ 1,424

SingaporeChicago

SIN - ORD

SINORD

Singapore Changi

Sat 11-4

23:00-11:10

2 stops49h 10m

Chicago O'Hare Intl

Sat 18-4

14:00-09:40

1 stop30h 40m

S$ 1,425

SingaporeChicago

SIN - MDW

SINMDW

Singapore Changi

Tue 14-4

13:45-05:40

2 stops28h 55m

Chicago Midway

Thu 16-4

11:00-12:35

2 stops36h 35m

S$ 1,462

SingaporeChicago

SIN - ORD

SINORD

Singapore Changi

Thu 4-6

08:45-00:59

1 stop29h 14m

Chicago O'Hare Intl

Thu 11-6

22:45-18:35

1 stop30h 50m

S$ 1,563

Flights are sorted by cheapest return flights first.

Deals found on 25-2

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 35 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, Japan Airlines and ANA.

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 1 March 2026.
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 1 March 2026.
Check out reviews from past customers who have flown EVA Air, ANA, 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.

Crew

8.6

Entertainment

8.0

Comfort

8.3

Food

8.1

Overall

8.4

Boarding

8.4

Reviews

1 / 20
8.0
Excellent

Jack,Feb 2026

TPE - SFO

Premium Economy for a.long-haul flight was worth it for the extra room. It is a 2-5-2 layout, so unless you have a family, get a seat in the 2-seat section. Nice slippers and goody bag. Food was tasty, although it seemed a bit repetitive (i.e., each meal used the same ingredients slightly re-configured). Staff were excellent.

Crew

8.6

Entertainment

8.0

Comfort

8.3

Food

8.1

Overall

8.4

Boarding

8.4

Reviews

1 / 20
8.0
Excellent

Jack,Feb 2026

TPE - SFO

Premium Economy for a.long-haul flight was worth it for the extra room. It is a 2-5-2 layout, so unless you have a family, get a seat in the 2-seat section. Nice slippers and goody bag. Food was tasty, although it seemed a bit repetitive (i.e., each meal used the same ingredients slightly re-configured). Staff were excellent.
8.4
Very Good

Crew

8.6

Entertainment

8.0

Comfort

8.3

Food

8.1

Overall

8.4

Boarding

8.4

Reviews

1 / 20
8.0
Excellent

Jack,Feb 2026

TPE - SFO

Premium Economy for a.long-haul flight was worth it for the extra room. It is a 2-5-2 layout, so unless you have a family, get a seat in the 2-seat section. Nice slippers and goody bag. Food was tasty, although it seemed a bit repetitive (i.e., each meal used the same ingredients slightly re-configured). Staff were excellent.

Crew

8.6

Entertainment

8.0

Comfort

8.3

Food

8.1

Overall

8.4

Boarding

8.4

Reviews

1 / 20
8.0
Excellent

Jack,Feb 2026

TPE - SFO

Premium Economy for a.long-haul flight was worth it for the extra room. It is a 2-5-2 layout, so unless you have a family, get a seat in the 2-seat section. Nice slippers and goody bag. Food was tasty, although it seemed a bit repetitive (i.e., each meal used the same ingredients slightly re-configured). Staff were excellent.

Crew

8.6

Entertainment

8.0

Comfort

8.3

Food

8.1

Overall

8.4

Boarding

8.4

Reviews

1 / 20
8.0
Excellent

Jack,Feb 2026

TPE - SFO

Premium Economy for a.long-haul flight was worth it for the extra room. It is a 2-5-2 layout, so unless you have a family, get a seat in the 2-seat section. Nice slippers and goody bag. Food was tasty, although it seemed a bit repetitive (i.e., each meal used the same ingredients slightly re-configured). Staff were excellent.

Crew

8.6

Entertainment

8.0

Comfort

8.3

Food

8.1

Overall

8.4

Boarding

8.4

Reviews

1 / 20
8.0
Excellent

Jack,Feb 2026

TPE - SFO

Premium Economy for a.long-haul flight was worth it for the extra room. It is a 2-5-2 layout, so unless you have a family, get a seat in the 2-seat section. Nice slippers and goody bag. Food was tasty, although it seemed a bit repetitive (i.e., each meal used the same ingredients slightly re-configured). Staff were excellent.

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$ 241, while return flights cost around S$ 136.

  • How much is a return flight to Illinois?

    A return flight to Illinois will typically cost around S$ 262, however they can be found for as little as S$ 136.

  • 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 42 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 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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