HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Singapore

$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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SIN
Dec 7 — Dec 141
Sun 12/7
Sun 12/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Singapore with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 7, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$937
(Ovago)

One-way from

$341
(Travelocity)

Popular in

December

Cheapest in

February

Average price

$1,131
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 ($208 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($66 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 7, 2025.

This IEagle deal was found by Cheapflights users on 11/3. 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.
Sun 11/301:30 pmORD - SIN
1 stop39h 25mAir India
Wed 12/1011:00 pmSIN - ORD
2 stops50h 30mAir India
Deal found 11/3$933
This Ovago deal was found by Cheapflights users on 11/5. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/142:35 pmORD - SIN
1 stop25h 05mCathay Pacific
Mon 11/171:25 amSIN - ORD
1 stop25h 30mCathay Pacific
Deal found 11/5$937
This KAYAK deal was found by Cheapflights users on 11/5. 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.
Thu 11/62:35 pmORD - SIN
1 stop25h 05mCathay Pacific
Fri 11/147:40 amSIN - ORD
1 stop19h 15mCathay Pacific
Deal found 11/5$938
This oojo deal was found by Cheapflights users on 11/4. 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 11/182:35 pmORD - SIN
1 stop35h 10mCathay Pacific
Tue 11/256:00 pmSIN - ORD
1 stop32h 55mCathay Pacific
Deal found 11/4$940
This CheapTickets deal was found by Cheapflights users on 11/6. 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 CheapTickets is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/11:30 pmORD - SIN
1 stop27h 30mAir India
Mon 12/811:00 pmSIN - ORD
2 stops50h 30mAir India
Deal found 11/6$946
This FlightHub deal was found by Cheapflights users on 11/5. 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 11/121:30 pmORD - SIN
1 stop42h 15mAir India
Mon 11/1711:00 pmSIN - ORD
2 stops50h 30mAir India
Deal found 11/5$947
This oojo deal was found by Cheapflights users on 11/6. 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.
Thu 12/411:50 amORD - SIN
1 stop30h 55mTurkish Airlines
Thu 12/1110:25 amSIN - ORD
1 stop37h 40mTurkish Airlines
Deal found 11/6$949
This oojo deal was found by Cheapflights users on 11/5. 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 12/111:50 amORD - SIN
1 stop30h 55mTurkish Airlines
Mon 12/811:25 pmSIN - ORD
1 stop24h 40mTurkish Airlines
Deal found 11/5$952
This IEagle deal was found by Cheapflights users on 11/3. 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 11/261:30 pmORD - SIN
1 stop27h 30mAir India
Sun 12/78:20 amSIN - ORD
2 stops41h 10mAir India
Deal found 11/3$954
This oojo deal was found by Cheapflights users on 11/5. 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.
Sun 11/162:35 pmORD - SIN
1 stop25h 05mCathay Pacific
Sat 11/228:15 pmSIN - ORD
1 stop30h 40mCathay Pacific
Deal found 11/5$965
This KAYAK deal was found by Cheapflights users on 11/5. 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 11/911:50 amORD - SIN
1 stop39h 45mTurkish Airlines
Sat 11/1510:25 amSIN - ORD
1 stop37h 40mTurkish Airlines
Deal found 11/5$968
This Gotogate deal was found by Cheapflights users on 11/6. 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.
Mon 12/12:35 pmORD - SIN
1 stop32h 30mCathay Pacific
Mon 12/82:05 pmSIN - ORD
1 stop36h 50mCathay Pacific
Deal found 11/6$970

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 7, 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

Tue 3/10

3:35 pm-5:40 am

1 stop25h 05m

Singapore Changi

Sat 3/21

6:00 pm-1:55 pm

1 stop32h 55m

$942

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Thu 3/5

2:35 pm-11:55 am

1 stop31h 20m

Singapore Changi

Sat 3/21

6:00 pm-1:55 pm

1 stop32h 55m

$942

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Wed 1/14

11:05 am-4:50 pm

2 stops39h 45m

Singapore Changi

Mon 2/2

7:40 am-9:15 pm

2 stops27h 35m

$994

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Tue 3/10

3:35 pm-5:40 am

1 stop25h 05m

Singapore Changi

Sun 3/15

1:25 am-1:55 pm

1 stop25h 30m

$997

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Thu 3/5

2:35 pm-5:40 am

1 stop25h 05m

Singapore Changi

Sun 3/15

1:25 am-1:55 pm

1 stop25h 30m

$997

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Sun 1/11

6:50 pm-8:45 am

1 stop23h 55m

Singapore Changi

Sat 2/28

3:15 am-2:30 pm

1 stop25h 15m

$1,010

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Sun 3/8

8:05 pm-2:55 pm

1 stop29h 50m

Singapore Changi

Sun 3/15

3:15 am-3:45 pm

1 stop25h 30m

$1,010

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Fri 2/6

6:50 pm-2:55 pm

1 stop30h 05m

Singapore Changi

Fri 2/20

3:15 am-2:30 pm

1 stop25h 15m

$1,010

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Thu 3/5

7:45 am-8:45 am

2 stops35h 00m

Singapore Changi

Mon 3/16

8:15 pm-3:45 pm

1 stop32h 30m

$1,076

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Thu 3/5

7:45 am-8:45 am

2 stops35h 00m

Singapore Changi

Fri 3/20

8:15 pm-3:45 pm

1 stop32h 30m

$1,076

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 60 results
1
2
3
...
6

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 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 7, 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 23h 55m. The distance between Illinois and Singapore is about 9345 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 Air India. Other airlines that offer cheap prices include Qatar Airways from $552 and United Airlines from $638 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 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to Singapore

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Haneda flights
John F Kennedy Intl to Haneda flights
Los Angeles to Narita flights
Seattle to Narita flights
Seattle to Haneda flights
San Francisco to Haneda flights
Newark to Haneda flights
Newark to Narita flights
Newark to New Delhi flights
Los Angeles to Manila flights
San Francisco to Narita flights
Los Angeles to Suvarnabhumi flights
John F Kennedy Intl to Narita flights
John F Kennedy Intl to New Delhi flights
John F Kennedy Intl to Suvarnabhumi flights
John F Kennedy Intl to Mumbai flights
Dallas/Fort Worth to Narita flights
San Francisco to New Delhi flights
San Francisco to Manila flights
Dallas/Fort Worth to Haneda flights
LaGuardia to Haneda flights
LaGuardia to Narita flights
Dulles Intl to Haneda flights
O'Hare Intl to Narita flights
Ontario to Narita flights
O'Hare Intl to Haneda flights
Seattle to Suvarnabhumi flights
Honolulu to Narita flights
John F Kennedy Intl to Ahmedabad flights
Newark to Suvarnabhumi flights
Boston to Narita flights
LaGuardia to New Delhi flights
Hobby to Narita flights
Newark to Mumbai flights
Hobby to Haneda flights
San Francisco to Suvarnabhumi flights
Dallas/Fort Worth to Suvarnabhumi flights
LaGuardia to Suvarnabhumi flights
John F Kennedy Intl to Hong Kong flights
Denver to Narita flights
San Francisco to Taiwan Taoyuan Intl flights
Los Angeles to Ho Chi Minh City flights
John F Kennedy Intl to Incheon Intl flights
John F Kennedy Intl to Taiwan Taoyuan Intl flights
Dallas/Fort Worth to Hyderabad flights
Los Angeles to Incheon Intl flights
Seattle to Taiwan Taoyuan Intl flights
John F Kennedy Intl to Manila flights
San Francisco to Ho Chi Minh City flights
Dulles Intl to Suvarnabhumi flights

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 7, 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%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.