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$341+ Cheap flights from Illinois to Singapore

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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SIN
dic. 20 — dic. 271
sáb. 12/20
sáb. 12/27
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 noviembre 20, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$988
(oojo)

One-way from

$341
(Orbitz)

Popular in

December

Cheapest in

February

Average price

$1,153
Provider with most accurate pricing for Chicago (CHI)-Singapore Changi flight deals.
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From Illinois to Singapore
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One-way flight from Illinois to Singapore
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Highest demand for flights based on searches. 16% potential increase in price ($216 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 November 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 noviembre 20, 2025.

This oojo deal was found by Cheapflights users on 11/19. 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.
dom. 11/237:00 amSTL - SIN
2 stops40h 05mCathay Pacific
jue. 12/118:15 pmSIN - STL
2 stops41h 42mCathay Pacific
Deal found 11/19$1,118
This oojo deal was found by Cheapflights users on 11/19. 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.
mar. 12/25:58 pmSTL - SIN
2 stops29h 07mCathay Pacific
dom. 12/78:15 pmSIN - STL
2 stops41h 42mCathay Pacific
Deal found 11/19$1,205
This United Airlines deal was found by Cheapflights users on 11/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/219:30 pmORD - SIN
2 stops32h 45mUnited Airlines
vie. 11/2810:20 pmSIN - ORD
2 stops32h 48mUnited Airlines
Deal found 11/20$1,258
This KAYAK deal was found by Cheapflights users on 11/18. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/265:35 pmORD - SIN
1 stop33h 50mJapan Airlines
jue. 12/252:20 amSIN - ORD
1 stop19h 10mJapan Airlines
Deal found 11/18$1,260
This Cathay Pacific deal was found by Cheapflights users on 11/19. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/27:00 amSTL - SIN
2 stops27h 25mMultiple Airlines
sáb. 12/61:25 amSIN - STL
2 stops35h 00mMultiple Airlines
Deal found 11/19$1,266
This oojo deal was found by Cheapflights users on 11/18. 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.
mar. 12/22:35 pmORD - SIN
1 stop25h 05mCathay Pacific
jue. 12/41:25 amSIN - ORD
1 stop25h 30mCathay Pacific
Deal found 11/18$1,267
This Mytrip deal was found by Cheapflights users on 11/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/308:00 amORD - SIN
3 stops33h 00mMultiple Airlines
lun. 12/89:20 pmSIN - ORD
3 stops46h 45mMultiple Airlines
Deal found 11/19$1,274
This Gotogate deal was found by Cheapflights users on 11/19. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/611:50 amORD - SIN
1 stop32h 10mTurkish Airlines
vie. 12/1211:40 amSIN - ORD
1 stop36h 25mTurkish Airlines
Deal found 11/19$1,278
This Kiwi.com deal was found by Cheapflights users on 11/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/294:25 pmORD - SIN
1 stop24h 30mMultiple Airlines
lun. 12/88:00 pmSIN - ORD
2 stops38h 00mMultiple Airlines
Deal found 11/19$1,279
This Mytrip deal was found by Cheapflights users on 11/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/97:05 amORD - SIN
3 stops31h 50mMultiple Airlines
mié. 12/178:25 pmSIN - ORD
3 stops47h 40mMultiple Airlines
Deal found 11/19$1,280
This Gotogate deal was found by Cheapflights users on 11/19. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/51:30 pmORD - SIN
1 stop27h 30mAir India
jue. 12/118:00 pmSIN - ORD
2 stops29h 30mAir India
Deal found 11/19$1,287
This Kiwi.com deal was found by Cheapflights users on 11/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/46:50 amORD - SIN
2 stops34h 05mMultiple Airlines
mar. 12/911:25 pmSIN - ORD
1 stop24h 40mMultiple Airlines
Deal found 11/19$1,289

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 noviembre 20, 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

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

mar. 2/10

7:04 am-12:25 am

2 stops27h 21m

Singapore Changi

dom. 3/1

6:00 pm-11:48 pm

2 stops43h 48m

$988

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

jue. 1/29

11:05 am-5:40 am

2 stops28h 35m

Singapore Changi

lun. 2/2

12:55 pm-6:16 pm

2 stops43h 21m

$1,049

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

vie. 1/16

11:05 am-3:45 pm

2 stops38h 40m

Singapore Changi

sáb. 1/31

2:05 pm-11:59 pm

2 stops23h 54m

$1,088

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

vie. 1/16

11:05 am-5:40 am

2 stops28h 35m

Singapore Changi

sáb. 1/31

12:55 pm-11:59 pm

2 stops25h 04m

$1,110

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

jue. 5/14

6:15 am-6:40 am

2 stops35h 25m

Singapore Changi

dom. 5/24

10:10 pm-4:35 pm

2 stops31h 25m

$1,125

EvansvilleSingapore

EVV - SIN

EVVSIN

Evansville Dress Regional

jue. 1/22

7:10 am-5:25 pm

2 stops44h 15m

Singapore Changi

dom. 1/25

2:20 am-8:58 pm

2 stops32h 38m

$1,218

MolineSingapore

MLI - SIN

MLISIN

Moline Quad-City

jue. 1/22

11:28 am-8:45 am

2 stops31h 17m

Singapore Changi

dom. 1/25

3:15 am-10:23 pm

2 stops33h 08m

$1,243

ChicagoSingapore

MDW - SIN

MDWSIN

Chicago Midway

vie. 4/10

4:35 pm-12:35 pm

3 stops31h 00m

Singapore Changi

vie. 4/17

1:45 pm-5:40 am

2 stops28h 55m

$1,255

EvansvilleSingapore

EVV - SIN

EVVSIN

Evansville Dress Regional

jue. 3/5

7:05 am-2:55 pm

2 stops41h 50m

Singapore Changi

dom. 3/8

3:15 am-9:42 pm

2 stops31h 27m

$1,263

ChicagoSingapore

MDW - SIN

MDWSIN

Chicago Midway

vie. 3/20

10:20 am-1:05 pm

2 stops37h 45m

Singapore Changi

mié. 3/25

2:25 pm-5:30 am

2 stops28h 05m

$1,271

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 60 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, September is the cheapest month in which you can book a flight from Illinois to Singapore (average of $661). Flying from Illinois to Singapore in December is currently the most expensive (average of $1,314). 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 SG?

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 noviembre 20, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 48% on flights from Illinois to Singapore by exploring options for tickets at noon.

What is the cheapest day to fly from Illinois to Singapore?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Singapore. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Illinois to Singapore flight should consider departing on Monday at noon when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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.

  • How long is the flight from Illinois to Singapore?

    Departing from Illinois to Singapore will take you 27h 21m. The distance between Illinois and Singapore is about 9513 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Illinois to Singapore one-way?

    One-way options have recently been found by users for as low as $373 on Air India. Other airlines that offer cheap prices include Japan Airlines from $436 and United Airlines from $446 one-way.

  • 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, September is the cheapest month in which you can book a flight from Illinois to Singapore (average of $661). Flying from Illinois to Singapore in December is currently the most expensive (average of $1,314). 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 noviembre 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air IndiaCheapest$675Average$921FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$701Average$883FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$709Average$1,293FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$744Average$910FlexibilityNo 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%
Etihad AirwaysCheapest$909Average$1,236FlexibilityNo cancel feeOn-time75%
Korean AirCheapest$940Average$1,400FlexibilityNo cancel feeOn-time81%
ANACheapest$1,024Average$1,427FlexibilityNo cancel feeOn-time80%

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