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$359+ Cheap flights from Illinois to Singapore (SIN)

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 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SIN
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Illinois to Singapore

Keep the following information in mind while searching for Illinois to Singapore flight deals. Data was last updated September 16, 2025.

Round-trip from

$693
(lastminute.com)

One-way from

$359
(oojo)

Popular in

December

Cheapest in

September

Average price

$805
From Illinois to Singapore Changi
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One-way flight from Illinois to Singapore Changi
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Highest demand for flights based on searches. 13% potential increase in price ($177 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($66 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Illinois to Singapore

Cheapest flights from Illinois to Singapore
Explore the most affordable flight options available from Illinois to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This lastminute.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2712:15 pmORD - SIN
1 stop22h 55mKorean Air
Sun 11/910:30 pmSIN - ORD
1 stop24h 00mKorean Air
Deal found 9/16$693
This Jettzy deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jettzy is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3012:15 pmORD - SIN
1 stop22h 55mKorean Air
Wed 11/51:35 amSIN - ORD
1 stop20h 55mKorean Air
Deal found 9/15$702
This Bravofly deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/294:00 pmORD - SIN
1 stop24h 30mCathay Pacific
Sun 10/51:25 pmSIN - ORD
1 stop38h 00mCathay Pacific
Deal found 9/16$710
This oojo deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/234:00 pmORD - SIN
1 stop24h 30mCathay Pacific
Tue 9/304:05 pmSIN - ORD
1 stop35h 20mCathay Pacific
Deal found 9/14$712
This oojo deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/32:40 pmORD - SIN
1 stop32h 25mCathay Pacific
Tue 11/118:15 pmSIN - ORD
1 stop30h 45mCathay Pacific
Deal found 9/14$713
This oojo deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/293:35 pmORD - SIN
1 stop35h 10mCathay Pacific
Wed 11/124:45 pmSIN - ORD
1 stop34h 15mCathay Pacific
Deal found 9/15$721
This oojo deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/224:00 pmORD - SIN
1 stop34h 25mCathay Pacific
Mon 10/2710:00 amSIN - ORD
1 stop40h 55mCathay Pacific
Deal found 9/15$722
This lastminute.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/293:40 pmORD - SIN
1 stop25h 00mCathay Pacific
Wed 11/56:00 pmSIN - ORD
1 stop33h 00mCathay Pacific
Deal found 9/14$728
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/179:35 amMDW - SIN
2 stops25h 05mDelta
Mon 9/221:10 amSIN - MDW
2 stops24h 18mDelta
Deal found 9/15$734
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/36:00 amMDW - SIN
2 stops33h 00mDelta
Tue 11/1110:30 pmSIN - MDW
2 stops32h 09mDelta
Deal found 9/15$884
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/154:28 pmMDW - SIN
2 stops41h 42mDelta
Mon 11/2410:30 pmSIN - MDW
2 stops32h 08mDelta
Deal found 9/15$901
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/165:34 pmMDW - SIN
2 stops40h 36mDelta
Sat 11/2210:30 pmSIN - MDW
2 stops32h 08mDelta
Deal found 9/15$902

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Singapore that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Illinois to Singapore that are best for you.

Fly from

Illinois

Fly to

Singapore

Route

Depart

Return

Price

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Wed 11/19

11:15 am-8:25 pm

1 stop43h 10m

Singapore Changi

Tue 11/25

1:35 am-8:30 am

1 stop20h 55m

$723

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Sun 11/16

11:15 am-12:10 am

1 stop22h 55m

Singapore Changi

Sun 11/23

1:35 am-8:30 am

1 stop20h 55m

$735

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Wed 10/29

12:15 pm-12:10 am

1 stop22h 55m

Singapore Changi

Tue 11/11

1:35 am-8:30 am

1 stop20h 55m

$870

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Wed 10/29

6:45 am-12:10 am

2 stops28h 25m

Singapore Changi

Tue 11/4

1:35 am-8:30 am

1 stop20h 55m

$874

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Thu 10/16

5:20 am-11:40 pm

2 stops29h 20m

Singapore Changi

Sun 10/19

1:10 am-9:30 am

1 stop21h 20m

$874

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Wed 11/19

6:45 am-5:00 am

2 stops32h 15m

Singapore Changi

Tue 11/25

1:35 am-8:30 am

1 stop20h 55m

$874

ChicagoSingapore

MDW - SIN

MDWSIN

Chicago Midway

Mon 11/3

6:00 am-5:00 am

2 stops33h 00m

Singapore Changi

Tue 11/11

10:30 pm-4:39 pm

2 stops32h 09m

$884

ChicagoSingapore

MDW - SIN

MDWSIN

Chicago Midway

Sat 11/15

4:28 pm-12:10 am

2 stops41h 42m

Singapore Changi

Mon 11/24

10:30 pm-4:38 pm

2 stops32h 08m

$901

ChicagoSingapore

MDW - SIN

MDWSIN

Chicago Midway

Wed 10/29

9:35 am-12:10 am

2 stops25h 35m

Singapore Changi

Wed 11/5

10:40 am-12:28 pm

2 stops39h 48m

$937

ChicagoSingapore

MDW - SIN

MDWSIN

Chicago Midway

Wed 10/29

6:00 am-12:10 am

2 stops29h 10m

Singapore Changi

Wed 11/12

10:40 am-9:01 am

2 stops36h 21m

$942

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 55 results
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Best time to book a flight from Illinois to Singapore

Have a flexible travel schedule? Discover the best time to fly to Singapore from Illinois with our price prediction graph.
Estimated round-trip 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 from Illinois to Singapore

What is the cheapest month to book a flight from Illinois to Singapore?

Currently, October is the cheapest month in which you can book a flight from Illinois to Singapore (average of $1,002). Flying from Illinois to Singapore in December is currently the most expensive (average of $1,665). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to SIN?

Find hourly flight availability from Illinois to Singapore. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Singapore as you normally would.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Singapore. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Singapore from Illinois?

    If you book a flight to Singapore from Illinois, you will be flying to Changi, which is the city’s only airport. Singapore Changi (SIN) is located 10.5 mi from the center of Singapore.

  • How long is the flight from Illinois to Singapore?

    Departing from Illinois to Singapore will take you 22h 55m. The distance between Illinois and Singapore is about 9345 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Illinois to Singapore?

    When deciding which route to take from Illinois to Singapore consider Chicago O'Hare Intl - Singapore Changi, Chicago Midway - Singapore Changi or Lambert-St Louis - Singapore Changi as they are the most popular.

  • Can I find deals for flights from Illinois to Singapore that include hotel bookings?

    Yes. In addition to deals on Illinois to Singapore flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Singapore?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Singapore.

  • Can I find deals for business class flights from Illinois to Singapore?

    Yes. Cheapflights offers flight deals from Illinois to Singapore by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Singapore?

    Currently, October is the cheapest month in which you can book a flight from Illinois to Singapore (average of $1,002). Flying from Illinois to Singapore in December is currently the most expensive (average of $1,665). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 10 airlines flying from Illinois to Singapore

Discover the top 10 airlines that operate flights from Illinois to Singapore. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air IndiaCheapest$675Average$921FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$701Average$888FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$709Average$1,295FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$729Average$844FlexibilityNo cancel feeOn-time77%
Japan AirlinesCheapest$791Average$1,081FlexibilityNo cancel feeOn-time79%
Qatar AirwaysCheapest$850Average$1,204FlexibilityNo cancel feeOn-time68%
Air CanadaCheapest$884Average$1,340FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$940Average$1,400FlexibilityNo cancel feeOn-time81%
ANACheapest$1,024Average$1,427FlexibilityNo cancel feeOn-time80%
EVA AirCheapest$1,080Average$1,459FlexibilityNo cancel feeOn-time74%

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