HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Singapore

$342+ 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 3/1. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SIN
Mar 10 — Mar 171
Tue 3/10
Tue 3/17
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

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 February 8, 2026.

This Justfly.com deal was found by Cheapflights users on 2/7. 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.
Sun 3/291:10 pm
ORD
-
SIN
1 stop43h 35m
Air India
Tue 4/218:55 am
SIN
-
ORD
2 stops39h 15m
Air India
Deal found 2/7$752
This oojo deal was found by Cheapflights users on 2/7. 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 4/11:10 pm
ORD
-
SIN
1 stop31h 10m
Air India
Tue 4/78:30 pm
SIN
-
ORD
2 stops27h 40m
Air India
Deal found 2/7$758
This United Airlines deal was found by Cheapflights users on 2/7. 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.
Mon 9/286:25 pm
ORD
-
SIN
1 stop22h 50m
United Airlines
Wed 10/2810:10 am
SIN
-
ORD
1 stop23h 15m
United Airlines
Deal found 2/7$780
This oojo deal was found by Cheapflights users on 2/6. 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.
Fri 4/101:10 pm
ORD
-
SIN
1 stop41h 20m
Air India
Sat 4/2511:00 pm
SIN
-
ORD
2 stops49h 10m
Air India
Deal found 2/6$781
This United Airlines deal was found by Cheapflights users on 2/7. 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 8/239:39 pm
ORD
-
SIN
1 stop31h 56m
United Airlines
Thu 9/178:45 am
SIN
-
ORD
1 stop27h 10m
United Airlines
Deal found 2/7$790
This United Airlines deal was found by Cheapflights users on 2/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/92:26 pm
ORD
-
SIN
1 stop27h 34m
United Airlines
Thu 3/1210:10 am
SIN
-
ORD
1 stop26h 28m
United Airlines
Deal found 2/6$791
This FlightHub deal was found by Cheapflights users on 2/6. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/64:15 pm
ORD
-
SIN
1 stop30h 30m
Cathay Pacific
Mon 4/271:45 am
SIN
-
ORD
1 stop25h 10m
Cathay Pacific
Deal found 2/6$792
This Justfly.com deal was found by Cheapflights users on 2/6. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/61:10 pm
ORD
-
SIN
1 stop43h 35m
Air India
Tue 4/288:30 pm
SIN
-
ORD
2 stops27h 40m
Air India
Deal found 2/6$793
This oojo deal was found by Cheapflights users on 2/6. 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.
Mon 4/204:15 pm
ORD
-
SIN
1 stop30h 30m
Cathay Pacific
Mon 5/49:45 am
SIN
-
ORD
1 stop41h 10m
Cathay Pacific
Deal found 2/6$794
This United Airlines deal was found by Cheapflights users on 2/7. 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 10/15:00 am
ORD
-
SIN
2 stops24h 35m
United Airlines
Tue 10/2710:20 pm
SIN
-
ORD
1 stop20h 58m
United Airlines
Deal found 2/7$795
This Justfly.com deal was found by Cheapflights users on 2/6. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/61:10 pm
ORD
-
SIN
1 stop43h 35m
Air India
Sun 4/2610:20 am
SIN
-
ORD
2 stops37h 50m
Air India
Deal found 2/6$799
This oojo deal was found by Cheapflights users on 2/7. 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 4/271:10 pm
ORD
-
SIN
1 stop43h 35m
Air India
Sun 5/38:55 am
SIN
-
ORD
2 stops39h 15m
Air India
Deal found 2/7$802

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 February 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$752
(Justfly.com)

One-way from

$342
(Travelocity)

Popular in

December

Cheapest in

September

Average price

$876
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. 13% potential increase in price ($172 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 February 2026
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 February 8, 2026.
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 3/15

9:15 pm-8:15 pm

1 stop34h 00m

Singapore Changi

Thu 3/26

10:20 pm-6:19 am

1 stop20h 59m

$790

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Wed 2/18

2:35 pm-8:00 am

1 stop27h 25m

Singapore Changi

Tue 3/3

10:20 pm-5:12 am

1 stop20h 52m

$790

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Wed 3/18

6:17 am-8:15 pm

1 stop24h 58m

Singapore Changi

Mon 3/30

9:00 am-12:59 am

1 stop28h 59m

$790

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Mon 3/9

2:26 pm-7:00 am

1 stop27h 34m

Singapore Changi

Thu 3/12

10:10 am-11:38 pm

1 stop26h 28m

$791

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Mon 3/23

12:54 pm-7:00 am

2 stops29h 06m

Singapore Changi

Mon 3/30

9:00 am-12:59 am

2 stops28h 59m

$795

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Sun 3/22

9:15 pm-8:15 pm

1 stop34h 00m

Singapore Changi

Mon 3/30

9:00 am-12:59 am

2 stops28h 59m

$795

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Mon 4/27

3:45 pm-6:45 am

1 stop26h 00m

Singapore Changi

Sun 5/3

8:35 pm-6:20 am

1 stop22h 45m

$840

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Sun 3/22

9:15 pm-8:15 pm

1 stop34h 00m

Singapore Changi

Sun 3/29

9:00 am-12:59 am

1 stop28h 59m

$840

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Wed 3/18

6:17 am-8:15 pm

1 stop24h 58m

Singapore Changi

Sun 3/29

9:00 am-12:59 am

1 stop28h 59m

$840

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Sun 2/22

8:10 pm-8:15 pm

2 stops34h 05m

Singapore Changi

Sat 2/28

10:20 pm-5:05 pm

2 stops32h 45m

$845

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/5

Showing 1-10 of 53 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 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.

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 34h. 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 $370 on Cathay Pacific. Other airlines that offer cheap prices include Turkish Airlines from $444 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

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
Newark to Haneda flights
Newark to Narita flights
San Francisco to Haneda flights
San Francisco to Narita flights
John F Kennedy Intl to Narita flights
Seattle to Narita flights
Seattle to Haneda flights
Dallas/Fort Worth to Narita flights
Los Angeles to Manila flights
O'Hare Intl to Narita flights
Dallas/Fort Worth to Haneda flights
LaGuardia to Haneda flights
LaGuardia to Narita flights
O'Hare Intl to Haneda flights
Los Angeles to Suvarnabhumi flights
Dulles Intl to Haneda flights
Hobby to Haneda flights
Los Angeles to Incheon Intl flights
John F Kennedy Intl to Suvarnabhumi flights
Newark to New Delhi flights
Ontario to Narita flights
Boston to Narita flights
John F Kennedy Intl to New Delhi flights
San Francisco to Manila flights
San Francisco to Taiwan Taoyuan Intl flights
San Francisco to New Delhi flights
John F Kennedy Intl to Taiwan Taoyuan Intl flights
John F Kennedy Intl to Hong Kong flights
San Francisco to Incheon Intl flights
Atlanta to Haneda flights
John F Kennedy Intl to Incheon Intl flights
Los Angeles to Taiwan Taoyuan Intl flights
Denver to Narita flights
San Francisco to Hong Kong flights
George Bush Intcntl to Haneda flights
John F Kennedy Intl to Mumbai flights
Honolulu to Haneda flights
Los Angeles to Ho Chi Minh City flights
Seattle to Suvarnabhumi flights
Newark to Mumbai flights
Dulles Intl to Narita flights
Newark to Suvarnabhumi flights
John F Kennedy Intl to Manila flights
Seattle to Incheon Intl flights
San Francisco to Suvarnabhumi flights
John F Kennedy Intl to Hongqiao Intl flights
O'Hare 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 February 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air IndiaCheapest$675Average$925FlexibilityNo cancel feeOn-timeN/A
ANACheapest$698Average$1,426FlexibilityNo cancel feeOn-time80%
Cathay PacificCheapest$698Average$885FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$709Average$1,196FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$799Average$1,105FlexibilityNo cancel feeOn-time77%
Etihad AirwaysCheapest$830Average$1,058FlexibilityNo cancel feeOn-time75%
Korean AirCheapest$858Average$1,203FlexibilityNo cancel feeOn-time81%
Air CanadaCheapest$872Average$1,340FlexibilityNo cancel feeOn-time67%
Japan AirlinesCheapest$988Average$1,081FlexibilityNo cancel feeOn-time79%
EVA AirCheapest$1,086Average$1,389FlexibilityNo cancel feeOn-time74%

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.