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$341+ 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 2/8. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SIN
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$851
(FlightHub)

One-way from

$341
(Expedia)

Popular in

December

Cheapest in

February

Average price

$902
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 Changi
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One-way flight from Illinois to Singapore Changi
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Highest demand for flights based on searches. 14% potential increase in price ($184 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($58 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 30, 2025.

This oojo deal was found by Cheapflights users on 10/28. 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 11/511:50 amORD - SIN
1 stop39h 45mTurkish Airlines
Tue 11/185:15 amSIN - ORD
1 stop27h 10mTurkish Airlines
Deal found 10/28$860
This oojo deal was found by Cheapflights users on 10/28. 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 11/32:35 pmORD - SIN
1 stop25h 05mCathay Pacific
Sun 11/91:25 amSIN - ORD
1 stop25h 30mCathay Pacific
Deal found 10/28$865
This oojo deal was found by Cheapflights users on 10/28. 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 11/52:35 pmORD - SIN
1 stop35h 10mCathay Pacific
Mon 11/171:25 amSIN - ORD
1 stop25h 30mCathay Pacific
Deal found 10/28$866
This IEagle deal was found by Cheapflights users on 10/28. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/31:30 pmORD - SIN
1 stop27h 30mAir India
Tue 2/178:20 amSIN - ORD
2 stops41h 10mAir India
Deal found 10/28$873
This oojo deal was found by Cheapflights users on 10/29. 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.
Fri 11/2811:50 amORD - SIN
1 stop39h 45mTurkish Airlines
Fri 12/511:40 amSIN - ORD
1 stop36h 25mTurkish Airlines
Deal found 10/29$898
This FlightHub deal was found by Cheapflights users on 10/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/31:30 pmORD - SIN
1 stop27h 30mAir India
Mon 2/1611:00 pmSIN - ORD
2 stops50h 30mAir India
Deal found 10/28$900
This CrystalTravel deal was found by Cheapflights users on 10/28. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/302:35 pmORD - SIN
1 stop25h 05mCathay Pacific
Thu 12/41:25 amSIN - ORD
1 stop25h 30mCathay Pacific
Deal found 10/28$902
This oojo deal was found by Cheapflights users on 10/29. 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 11/2611:50 amORD - SIN
1 stop30h 55mTurkish Airlines
Wed 12/311:25 pmSIN - ORD
1 stop24h 40mTurkish Airlines
Deal found 10/29$906
This KAYAK deal was found by Cheapflights users on 10/28. 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.
Mon 12/111:50 amORD - SIN
1 stop30h 55mTurkish Airlines
Wed 2/1811:25 pmSIN - ORD
1 stop33h 00mTurkish Airlines
Deal found 10/28$918
This KAYAK deal was found by Cheapflights users on 10/28. 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.
Sun 11/301:10 pmORD - SIN
1 stop30h 25mEtihad Airways
Sun 2/157:25 pmSIN - ORD
1 stop26h 10mEtihad Airways
Deal found 10/28$923
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 11/1811:50 amORD - SIN
1 stop30h 55mTurkish Airlines
Sun 11/2310:25 amSIN - ORD
1 stop37h 40mTurkish Airlines
Deal found 10/29$933
This KAYAK deal was found by Cheapflights users on 10/28. 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.
Sun 11/302:35 pmORD - SIN
1 stop25h 05mCathay Pacific
Sun 2/158:15 pmSIN - ORD
1 stop30h 40mCathay Pacific
Deal found 10/28$939

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 October 30, 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

Sun 11/9

11:50 am-8:45 am

1 stop30h 55m

Singapore Changi

Sat 11/22

12:10 pm-12:00 pm

3 stops37h 50m

$1,049

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Sun 1/4

6:50 pm-9:15 pm

1 stop36h 25m

Singapore Changi

Sat 2/14

10:15 am-2:30 pm

1 stop42h 15m

$1,094

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 1/16

11:05 am-5:40 am

2 stops28h 35m

Singapore Changi

Fri 1/30

1:25 am-11:59 pm

2 stops36h 34m

$1,098

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

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Thu 2/12

6:50 pm-8:45 am

1 stop23h 55m

Singapore Changi

Wed 2/25

7:30 pm-2:30 pm

2 stops33h 00m

$1,119

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Thu 2/12

6:50 pm-8:45 am

1 stop23h 55m

Singapore Changi

Tue 2/24

5:25 pm-2:30 pm

2 stops35h 05m

$1,119

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Tue 2/10

6:50 pm-8:45 am

1 stop23h 55m

Singapore Changi

Thu 2/26

1:40 pm-2:30 pm

2 stops38h 50m

$1,119

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Tue 2/10

6:50 pm-8:45 am

1 stop23h 55m

Singapore Changi

Wed 2/25

5:25 pm-2:30 pm

2 stops35h 05m

$1,119

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Mon 3/30

12:20 pm-5:00 am

1 stop27h 40m

Singapore Changi

Wed 4/15

1:10 am-9:40 am

1 stop21h 30m

$1,128

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Wed 4/1

9:30 am-5:00 am

2 stops30h 30m

Singapore Changi

Tue 4/21

7:30 am-9:16 pm

2 stops26h 46m

$1,139

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 59 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 June is currently the most expensive (average of $1,199). 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 October 30, 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.

  • 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 28h 35m. 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 $446 on Etihad Airways. Other airlines that offer cheap prices include Cathay Pacific from $466 and Alaska Airlines from $600 one-way.

  • 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, 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 June is currently the most expensive (average of $1,199). 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

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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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air IndiaCheapest$675Average$921FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$701Average$882FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$709Average$1,284FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$744Average$914FlexibilityNo 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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