HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Singapore

$366+ 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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SIN
Jun 21 — Jun 281
Sat 6/21
Sat 6/28
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 June 16, 2025.

Round-trip from

$1,087
(United Airlines)

One-way from

$366
(FlightHub)

Popular in

December

Cheapest in

February

Average price

$1,434
From Illinois to Singapore
Search Deals
One-way flight from Illinois to Singapore
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($149 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($53 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 16, 2025.

This United Airlines deal was found by Cheapflights users on 6/15. 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 10/145:47 pmSTL - SIN
1 stop23h 28mUnited Airlines
Thu 10/238:45 amSIN - STL
1 stop20h 55mUnited Airlines
Deal found 6/15$1,087
This Delta deal was found by Cheapflights users on 6/15. 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 10/145:40 pmSTL - SIN
2 stops37h 15mDelta
Mon 10/2010:30 pmSIN - STL
2 stops37h 32mDelta
Deal found 6/15$1,101
This KAYAK deal was found by Cheapflights users on 6/16. 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.
Fri 7/1812:15 pmORD - SIN
1 stop30h 00mAir India
Wed 7/308:45 amSIN - ORD
2 stops38h 30mAir India
Deal found 6/16$1,110
This Mytrip deal was found by Cheapflights users on 6/14. 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.
Tue 7/87:42 amORD - SIN
2 stops26h 58mMultiple Airlines
Tue 7/157:30 amSIN - ORD
3 stops35h 33mMultiple Airlines
Deal found 6/14$1,112
This Cheapflightsfares deal was found by Cheapflights users on 6/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/208:50 amORD - SIN
2 stops32h 50mANA
Mon 9/110:10 pmSIN - ORD
1 stop30h 00mANA
Deal found 6/16$1,120
This United Airlines deal was found by Cheapflights users on 6/16. 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 8/1112:46 pmORD - SIN
1 stop28h 29mUnited Airlines
Wed 8/208:40 pmSIN - ORD
1 stop22h 35mUnited Airlines
Deal found 6/16$1,125
This Air Canada deal was found by Cheapflights users on 6/16. 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 7/298:40 amORD - SIN
2 stops27h 05mAir Canada
Tue 8/59:10 amSIN - ORD
2 stops40h 19mAir Canada
Deal found 6/16$1,126
This Gotogate deal was found by Cheapflights users on 6/14. 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.
Tue 7/291:30 amORD - SIN
1 stop27h 00mJapan Airlines
Wed 8/68:05 amSIN - ORD
1 stop20h 55mJapan Airlines
Deal found 6/14$1,127
This United Airlines deal was found by Cheapflights users on 6/14. 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 7/299:05 amMLI - SIN
2 stops32h 10mUnited Airlines
Tue 8/58:40 pmSIN - MLI
2 stops26h 42mUnited Airlines
Deal found 6/14$1,129
This American Airlines deal was found by Cheapflights users on 6/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/111:05 amORD - SIN
1 stop27h 25mAmerican Airlines
Sat 10/41:55 amSIN - ORD
2 stops24h 49mAmerican Airlines
Deal found 6/14$1,138
This Delta deal was found by Cheapflights users on 6/15. 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 8/197:15 amORD - SIN
2 stops27h 25mDelta
Wed 9/171:10 amSIN - ORD
2 stops24h 29mDelta
Deal found 6/15$1,140
This FlightHub deal was found by Cheapflights users on 6/14. 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.
Tue 8/1912:30 pmORD - SIN
1 stop22h 10mKorean Air
Thu 8/281:10 amSIN - ORD
2 stops44h 14mKorean Air
Deal found 6/14$1,143

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 June 16, 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 10/14

5:15 am-6:25 pm

2 stops24h 10m

Singapore Changi

Tue 10/21

8:45 am-11:58 pm

2 stops28h 13m

$1,087

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 10/14

5:40 pm-7:55 pm

2 stops37h 15m

Singapore Changi

Mon 10/20

10:30 pm-11:02 pm

2 stops37h 32m

$1,101

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Fri 7/18

12:15 pm-7:15 am

1 stop30h 00m

Singapore Changi

Wed 7/30

8:45 am-10:15 am

2 stops38h 30m

$1,110

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Tue 7/8

7:42 am-11:40 pm

2 stops26h 58m

Singapore Changi

Tue 7/15

7:30 am-6:03 am

3 stops35h 33m

$1,112

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Wed 8/20

8:50 am-6:40 am

2 stops32h 50m

Singapore Changi

Mon 9/1

10:10 pm-3:10 pm

1 stop30h 00m

$1,120

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Mon 8/11

12:46 pm-6:15 am

1 stop28h 29m

Singapore Changi

Wed 8/20

8:40 pm-6:15 am

1 stop22h 35m

$1,125

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Tue 7/29

8:40 am-12:45 am

2 stops27h 05m

Singapore Changi

Tue 8/5

9:10 am-12:29 pm

2 stops40h 19m

$1,126

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Tue 7/29

1:30 am-5:30 pm

1 stop27h 00m

Singapore Changi

Wed 8/6

8:05 am-4:00 pm

1 stop20h 55m

$1,127

MolineSingapore

MLI - SIN

MLISIN

Moline Quad-City

Tue 7/29

9:05 am-6:15 am

2 stops32h 10m

Singapore Changi

Tue 8/5

8:40 pm-10:22 am

2 stops26h 42m

$1,129

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Thu 9/11

1:05 am-5:30 pm

1 stop27h 25m

Singapore Changi

Sat 10/4

1:55 am-1:44 pm

2 stops24h 49m

$1,138

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/15

Showing 1-10 of 48 results
1
2
3
...
5

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 $1,011). Flying from Illinois to Singapore in December is currently the most expensive (average of $1,684). 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 June 16, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Singapore as you normally would.

Rainfall in Singapore by month

Plan your trip to Singapore by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Singapore ranges from 5.9 - 10.6 inches per month. December is typically the wettest month, when rainfall can reach 10.6 in. July is typically the driest time to visit Singapore when rainfall is around 5.9 in.

Temperature in Singapore by month

Plan your trip to Singapore by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Singapore, use this chart to help with planning. For those seeking warmer temperatures, March is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 78.8 F).

Reviews of airlines servicing Singapore

Get insights into the airlines that provide service to Singapore. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Singapore. Reviews last updated June 16, 2025.
See what other customers who have flown with EVA Air, Korean Air and Japan Airlines from Illinois to Singapore have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,204 reviews

Crew

8.6

Entertainment

8.0

Comfort

8.3

Food

8.1

Overall

8.4

Boarding

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
EVA Air
8.4
Very good
1,204 reviews
EVA Air
8.4
Very good
1,204 reviews

Crew

8.6

Entertainment

8.0

Comfort

8.3

Food

8.1

Overall

8.4

Boarding

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Korean Air
8.4
Very good
1,090 reviews
EVA Air
8.4
Very good
1,204 reviews

Crew

8.6

Entertainment

8.0

Comfort

8.3

Food

8.1

Overall

8.4

Boarding

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Japan Airlines
8.3
Very good
1,494 reviews
EVA Air
8.4
Very good
1,204 reviews

Crew

8.6

Entertainment

8.0

Comfort

8.3

Food

8.1

Overall

8.4

Boarding

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
China Airlines
8.3
Very good
742 reviews
EVA Air
8.4
Very good
1,204 reviews

Crew

8.6

Entertainment

8.0

Comfort

8.3

Food

8.1

Overall

8.4

Boarding

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
ANA
8.3
Very good
886 reviews
EVA Air
8.4
Very good
1,204 reviews

Crew

8.6

Entertainment

8.0

Comfort

8.3

Food

8.1

Overall

8.4

Boarding

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

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 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 $366 on Air India. Other airlines that offer cheap prices include IndiGo from $452 and Japan Airlines from $495 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 $1,011). Flying from Illinois to Singapore in December is currently the most expensive (average of $1,684). 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
Los Angeles to Narita flights
John F Kennedy Intl to Haneda flights
Newark to Haneda flights
Newark to Narita flights
Seattle to Narita flights
San Francisco to Haneda flights
Los Angeles to Manila flights
San Francisco to Narita flights
John F Kennedy Intl to Narita flights
John F Kennedy Intl to Suvarnabhumi flights
Seattle to Haneda flights
Los Angeles to Suvarnabhumi flights
Dallas/Fort Worth to Narita 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
Seattle to Suvarnabhumi flights
Dallas/Fort Worth to Suvarnabhumi flights
San Francisco to New Delhi flights
John F Kennedy Intl to Hong Kong flights
O'Hare Intl to Narita flights
Hobby to Haneda flights
Los Angeles to Incheon Intl flights
San Francisco to Ho Chi Minh City flights
Ontario to Narita flights
San Francisco to Hong Kong flights
Boston to Narita flights
Hobby to Narita flights
O'Hare Intl to Haneda flights
John F Kennedy Intl to Incheon Intl flights
John F Kennedy Intl to Taiwan Taoyuan Intl flights
San Francisco to Suvarnabhumi flights
John F Kennedy Intl to Manila flights
Newark to Suvarnabhumi flights
Newark to New Delhi flights
John F Kennedy Intl to Mumbai flights
Honolulu to Narita flights
Newark to Mumbai flights
Dulles Intl to Suvarnabhumi flights
John F Kennedy Intl to Hongqiao Intl flights
LaGuardia to Suvarnabhumi flights
John F Kennedy Intl to New Delhi flights
Hobby to Suvarnabhumi flights
Atlanta to Haneda flights
San Francisco to Mumbai flights
Dulles Intl to Narita flights
San Diego to Narita 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 June 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$730Average$890FlexibilityNo cancel feeOn-time77%
Japan AirlinesCheapest$783Average$856FlexibilityNo cancel feeOn-time79%
Cathay PacificCheapest$819Average$1,002FlexibilityNo cancel feeOn-time72%
Qatar AirwaysCheapest$850Average$1,299FlexibilityNo cancel feeOn-time68%
United AirlinesCheapest$876Average$1,283FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$895Average$1,253FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$970Average$1,400FlexibilityNo cancel feeOn-time81%
EVA AirCheapest$1,083Average$1,383FlexibilityNo cancel feeOn-time74%
ANACheapest$1,086Average$1,656FlexibilityNo cancel feeOn-time80%
FinnairCheapest$1,203Average$1,349FlexibilityNo cancel feeOn-time76%

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.