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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 2/17. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SIN
Dec 26 — Jan 21
Fri 12/26
Fri 1/2
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 November 26, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,017
(oojo)

One-way from

$341
(Travelocity)

Popular in

December

Cheapest in

February

Average price

$1,140
Provider with most accurate pricing for Chicago (CHI)-Singapore Changi flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Singapore Changi flights.
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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. 15% potential increase in price ($212 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 November 26, 2025.

This Orbitz deal was found by Cheapflights users on 11/26. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/277:00 amSTL - SIN
2 stops40h 00mMultiple Airlines
Thu 12/48:15 pmSIN - STL
2 stops41h 42mMultiple Airlines
Deal found 11/26$1,147
This Delta deal was found by Cheapflights users on 11/25. 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.
Tue 11/258:02 pmORD - SIN
2 stops42h 58mDelta
Mon 12/11:35 amSIN - ORD
2 stops29h 40mDelta
Deal found 11/25$1,249
This Mytrip deal was found by Cheapflights users on 11/25. 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.
Sat 12/610:20 amORD - SIN
1 stop24h 30mMultiple Airlines
Tue 12/1612:55 amSIN - ORD
3 stops43h 10mMultiple Airlines
Deal found 11/25$1,265
This Kiwi.com deal was found by Cheapflights users on 11/23. 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.
Tue 12/23:53 pmORD - SIN
2 stops39h 32mMultiple Airlines
Thu 3/57:40 amSIN - ORD
1 stop19h 15mMultiple Airlines
Deal found 11/23$1,280
This Kiwi.com deal was found by Cheapflights users on 11/23. 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.
Thu 12/46:50 amORD - SIN
2 stops34h 05mMultiple Airlines
Sun 3/17:40 amSIN - ORD
1 stop19h 15mMultiple Airlines
Deal found 11/23$1,282
This Kiwi.com deal was found by Cheapflights users on 11/23. 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.
Sat 12/69:06 pmORD - SIN
2 stops36h 04mMultiple Airlines
Sat 3/77:40 amSIN - ORD
1 stop19h 15mMultiple Airlines
Deal found 11/23$1,304
This Mytrip deal was found by Cheapflights users on 11/24. 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.
Mon 12/110:20 amORD - SIN
1 stop24h 30mMultiple Airlines
Fri 12/52:30 amSIN - ORD
2 stops29h 14mMultiple Airlines
Deal found 11/24$1,313
This United Airlines deal was found by Cheapflights users on 11/26. 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.
Thu 11/275:29 pmSTL - SIN
1 stop24h 31mUnited Airlines
Thu 12/410:10 amSIN - STL
1 stop20h 17mUnited Airlines
Deal found 11/26$1,315
This Mytrip deal was found by Cheapflights users on 11/25. 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.
Thu 11/277:05 amORD - SIN
3 stops33h 55mMultiple Airlines
Sun 12/2810:20 amSIN - ORD
3 stops33h 45mMultiple Airlines
Deal found 11/25$1,325
This Mytrip deal was found by Cheapflights users on 11/24. 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.
Mon 12/16:30 pmORD - SIN
3 stops30h 25mMultiple Airlines
Mon 12/88:15 pmSIN - ORD
3 stops47h 50mMultiple Airlines
Deal found 11/24$1,339
This United Airlines deal was found by Cheapflights users on 11/25. 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.
Tue 12/25:30 pmSTL - SIN
1 stop24h 30mUnited Airlines
Sun 12/710:10 amSIN - STL
1 stop20h 17mUnited Airlines
Deal found 11/25$1,365
This Delta deal was found by Cheapflights users on 11/25. 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 12/66:00 amMDW - SIN
2 stops33h 00mDelta
Tue 12/161:35 amSIN - MDW
2 stops36h 12mDelta
Deal found 11/25$1,459

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 November 26, 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

Tue 1/20

11:05 am-5:40 am

2 stops28h 35m

Singapore Changi

Tue 1/27

10:00 am-10:59 pm

2 stops26h 59m

$1,017

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 1/20

5:00 pm-8:00 am

1 stop25h 00m

Singapore Changi

Tue 1/27

10:10 am-10:58 pm

2 stops26h 48m

$1,026

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 1/29

11:05 am-5:40 am

2 stops28h 35m

Singapore Changi

Sun 2/1

1:25 am-10:59 pm

2 stops35h 34m

$1,049

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 2/10

7:04 am-5:40 am

2 stops32h 36m

Singapore Changi

Sun 3/1

8:15 pm-11:48 pm

2 stops41h 33m

$1,081

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 1/16

5:00 pm-8:00 am

1 stop25h 00m

Singapore Changi

Sat 1/31

10:20 pm-5:11 am

1 stop20h 51m

$1,106

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 1/16

11:05 am-5:40 am

2 stops28h 35m

Singapore Changi

Sat 1/31

12:55 pm-11:59 pm

2 stops25h 04m

$1,110

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 1/9

11:20 am-8:00 am

2 stops30h 40m

Singapore Changi

Fri 1/16

10:20 pm-12:29 pm

2 stops28h 09m

$1,111

MolineSingapore

MLI - SIN

MLISIN

Moline Quad-City

Thu 1/22

10:47 am-8:00 am

2 stops31h 13m

Singapore Changi

Mon 1/26

10:10 am-9:36 pm

2 stops25h 26m

$1,189

EvansvilleSingapore

EVV - SIN

EVVSIN

Evansville Dress Regional

Thu 1/22

7:10 am-6:35 am

2 stops33h 25m

Singapore Changi

Sun 1/25

2:20 am-8:58 pm

2 stops32h 38m

$1,218

MolineSingapore

MLI - SIN

MLISIN

Moline Quad-City

Fri 1/9

3:45 pm-8:00 am

2 stops26h 15m

Singapore Changi

Fri 2/6

10:10 am-8:34 pm

3 stops24h 24m

$1,229

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/26

Showing 1-10 of 52 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 November 26, 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 25h. 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 $381 on Etihad Airways. Other airlines that offer cheap prices include Delta from $453 and United Airlines from $698 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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Alternative routes for Illinois to Singapore

See prices for flight routes from nearby airports that may be better suited for you.
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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 November 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air IndiaCheapest$675Average$921FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$701Average$879FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$709Average$1,269FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$742Average$910FlexibilityNo cancel feeOn-time77%
Japan AirlinesCheapest$791Average$1,081FlexibilityNo cancel feeOn-time79%
Etihad AirwaysCheapest$830Average$1,172FlexibilityNo cancel feeOn-time75%
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%

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