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$346+ 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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SIN
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap 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 December 12, 2025.

This United Airlines deal was found by Cheapflights users on 12/10. 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.
Sun 12/148:45 amORD - SIN
2 stops33h 15mUnited Airlines
Tue 12/1610:20 pmSIN - ORD
2 stops24h 51mUnited Airlines
Deal found 12/10$1,355
This United Airlines deal was found by Cheapflights users on 12/10. 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 12/239:23 pmORD - SIN
2 stops32h 52mUnited Airlines
Wed 1/710:10 amSIN - ORD
1 stop27h 04mUnited Airlines
Deal found 12/10$1,605
This Mytrip deal was found by Cheapflights users on 12/9. 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.
Wed 12/107:05 amORD - SIN
3 stops33h 55mMultiple Airlines
Wed 12/177:40 pmSIN - ORD
2 stops36h 45mMultiple Airlines
Deal found 12/9$1,612
This Kiwi.com deal was found by Cheapflights users on 12/10. 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.
Wed 12/2411:30 pmORD - SIN
1 stop22h 35mEVA Air
Sat 12/271:15 pmSIN - ORD
1 stop20h 20mEVA Air
Deal found 12/10$1,614
This KAYAK deal was found by Cheapflights users on 12/10. 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.
Wed 12/2411:30 pmORD - SIN
1 stop22h 35mEVA Air
Mon 12/291:15 pmSIN - ORD
1 stop20h 20mEVA Air
Deal found 12/10$1,638
This KAYAK deal was found by Cheapflights users on 12/10. 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.
Wed 12/2411:30 pmORD - SIN
1 stop22h 35mEVA Air
Sun 12/281:15 pmSIN - ORD
1 stop20h 20mEVA Air
Deal found 12/10$1,678
This Justfly.com deal was found by Cheapflights users on 12/10. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/221:30 pmORD - SIN
1 stop39h 25mAir India
Sat 12/278:00 pmSIN - ORD
2 stops29h 30mAir India
Deal found 12/10$1,679
This Air Canada deal was found by Cheapflights users on 12/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/179:00 amSTL - SIN
2 stops56h 00mAir Canada
Tue 12/238:50 amSIN - STL
2 stops44h 39mAir Canada
Deal found 12/11$1,682
This Kiwi.com deal was found by Cheapflights users on 12/10. 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.
Mon 12/221:30 pmORD - SIN
1 stop27h 30mMultiple Airlines
Thu 12/257:40 amSIN - ORD
1 stop19h 15mMultiple Airlines
Deal found 12/10$1,711
This United Airlines deal was found by Cheapflights users on 12/10. 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 12/166:55 amORD - SIN
1 stop23h 20mUnited Airlines
Wed 12/2410:10 amSIN - ORD
1 stop27h 04mUnited Airlines
Deal found 12/10$1,712
This Air Canada deal was found by Cheapflights users on 12/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/169:22 amORD - SIN
2 stops31h 38mAir Canada
Thu 12/258:50 amSIN - ORD
1 stop19h 51mAir Canada
Deal found 12/10$1,714
This Air Canada deal was found by Cheapflights users on 12/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/171:35 pmSTL - SIN
2 stops51h 25mAir Canada
Sun 12/218:50 amSIN - STL
2 stops26h 53mAir Canada
Deal found 12/11$1,759

Find flight deals from Illinois to Singapore

Keep the following information in mind while searching for Illinois to Singapore flight deals. Data was last updated December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,003
(oojo)

One-way from

$346
(oojo)

Popular in

December

Cheapest in

February

Average price

$1,913
Provider with most accurate pricing for Chicago (CHI)-Singapore Changi flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Singapore Changi flights.
Search Deals
From Illinois to Singapore
Search Deals
One-way flight from Illinois to Singapore
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($211 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($71 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 12, 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

Sun 1/25

6:44 pm-3:45 pm

2 stops55h 01m

Singapore Changi

Sun 2/1

2:05 pm-6:14 pm

2 stops42h 09m

$1,009

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

2:05 pm-11:59 pm

2 stops23h 54m

$1,110

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-9:13 pm

2 stops25h 03m

$1,129

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 2/15

10:04 am-8:10 pm

2 stops44h 06m

Singapore Changi

Thu 2/19

8:15 pm-11:48 pm

2 stops41h 33m

$1,149

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 1/25

5:00 pm-8:00 am

1 stop25h 00m

Singapore Changi

Sun 2/1

10:20 pm-5:11 am

1 stop20h 51m

$1,225

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 1/8

8:30 am-8:00 am

2 stops33h 30m

Singapore Changi

Thu 1/15

10:20 pm-5:11 am

1 stop20h 51m

$1,225

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 1/16

6:00 pm-8:15 pm

2 stops36h 15m

Singapore Changi

Sat 1/31

10:20 pm-5:11 am

1 stop20h 51m

$1,229

MolineSingapore

MLI - SIN

MLISIN

Moline Quad-City

Sat 1/24

10:47 am-8:00 am

2 stops31h 13m

Singapore Changi

Sat 1/31

10:20 pm-4:54 pm

2 stops32h 34m

$1,229

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Sun 2/1

3:35 pm-3:30 pm

2 stops33h 55m

Singapore Changi

Tue 2/10

2:25 pm-3:25 pm

3 stops39h 00m

$1,284

ChicagoSingapore

MDW - SIN

MDWSIN

Chicago Midway

Wed 3/4

6:00 am-5:00 am

2 stops33h 00m

Singapore Changi

Sat 3/28

1:35 am-10:29 pm

2 stops33h 54m

$1,301

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

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, 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 $1,359). 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 December 12, 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 $355 on Cathay Pacific. Other airlines that offer cheap prices include Air India from $412 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 $1,359). 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air IndiaCheapest$675Average$921FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$701Average$879FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$709Average$1,271FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$742Average$942FlexibilityNo 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$918Average$1,153FlexibilityNo cancel feeOn-time81%
ANACheapest$1,024Average$1,427FlexibilityNo cancel feeOn-time80%

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