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$367+ 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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SIN
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$1,060
(Air Canada)

One-way from

$367
(oojo)

Popular in

December

Cheapest in

February

Average price

$1,434
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. 11% potential increase in price ($147 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($53 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This Air Canada deal was found by Cheapflights users on 6/11. 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.
Sat 8/301:30 pmSTL - SIN
2 stops52h 35mAir Canada
Fri 9/128:10 amSIN - STL
2 stops48h 47mAir Canada
Deal found 6/11$1,060
This Delta deal was found by Cheapflights users on 6/12. 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 7/2211:18 amSTL - SIN
2 stops23h 22mDelta
Sun 8/171:10 amSIN - STL
2 stops35h 04mDelta
Deal found 6/12$1,109
This United Airlines deal was found by Cheapflights users on 6/12. 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 7/226:00 amSTL - SIN
1 stop23h 25mUnited Airlines
Wed 8/138:45 amSIN - STL
1 stop21h 00mUnited Airlines
Deal found 6/12$1,110
This KAYAK deal was found by Cheapflights users on 6/12. 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 7/285:45 pmORD - SIN
1 stop23h 55mANA
Sun 8/1010:10 pmSIN - ORD
1 stop23h 30mANA
Deal found 6/12$1,116
This oojo deal was found by Cheapflights users on 6/11. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/912:15 pmORD - SIN
1 stop30h 00mAir India
Sun 8/1711:00 pmSIN - ORD
2 stops48h 15mAir India
Deal found 6/11$1,117
This Mytrip deal was found by Cheapflights users on 6/12. 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.
Mon 7/211:30 amORD - SIN
1 stop39h 40mMultiple Airlines
Tue 7/299:10 amSIN - ORD
1 stop42h 44mMultiple Airlines
Deal found 6/12$1,118
This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2012:30 pmORD - SIN
1 stop22h 10mKorean Air
Thu 8/281:10 amSIN - ORD
2 stops44h 14mKorean Air
Deal found 6/11$1,120
This Air Canada deal was found by Cheapflights users on 6/11. 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 7/28:03 pmORD - SIN
2 stops46h 02mAir Canada
Tue 7/81:45 amSIN - ORD
2 stops26h 09mAir Canada
Deal found 6/11$1,122
This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/911:45 pmORD - SIN
2 stops28h 35mIndiGo
Sun 8/177:45 pmSIN - ORD
2 stops39h 15mIndiGo
Deal found 6/11$1,124
This United Airlines deal was found by Cheapflights users on 6/12. 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 7/2212:46 pmORD - SIN
1 stop28h 29mUnited Airlines
Mon 7/288:45 amSIN - ORD
1 stop27h 28mUnited Airlines
Deal found 6/12$1,125
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/159:30 amMDW - SIN
2 stops25h 10mDelta
Wed 10/157:30 amSIN - MDW
2 stops27h 14mDelta
Deal found 6/10$1,139
This FlightHub deal was found by Cheapflights users on 6/12. 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 7/811:25 amORD - SIN
1 stop32h 20mTurkish Airlines
Tue 7/225:10 amSIN - ORD
1 stop41h 30mTurkish Airlines
Deal found 6/12$1,153

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 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

Sat 8/30

1:30 pm-7:05 am

2 stops52h 35m

Singapore Changi

Fri 9/12

8:10 am-7:57 pm

2 stops48h 47m

$1,060

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 7/22

11:18 am-11:40 pm

2 stops23h 22m

Singapore Changi

Sun 8/17

1:10 am-11:14 pm

2 stops35h 04m

$1,109

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 7/22

6:00 am-6:25 pm

1 stop23h 25m

Singapore Changi

Mon 8/18

8:45 am-4:45 pm

1 stop21h 00m

$1,110

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Mon 7/28

5:45 pm-6:40 am

1 stop23h 55m

Singapore Changi

Sun 8/10

10:10 pm-8:40 am

1 stop23h 30m

$1,116

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Sat 8/9

12:15 pm-7:15 am

1 stop30h 00m

Singapore Changi

Sun 8/17

11:00 pm-10:15 am

2 stops48h 15m

$1,117

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Mon 7/21

1:30 am-6:10 am

1 stop39h 40m

Singapore Changi

Tue 7/29

9:10 am-2:54 pm

1 stop42h 44m

$1,118

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Wed 8/20

12:30 pm-11:40 pm

1 stop22h 10m

Singapore Changi

Thu 8/28

1:10 am-8:24 am

2 stops44h 14m

$1,120

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Wed 7/2

8:03 pm-7:05 am

2 stops46h 02m

Singapore Changi

Tue 7/8

1:45 am-2:54 pm

2 stops26h 09m

$1,122

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Sat 8/9

11:45 pm-5:20 pm

2 stops28h 35m

Singapore Changi

Sun 8/17

7:45 pm-10:00 pm

2 stops39h 15m

$1,124

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Tue 7/22

12:46 pm-6:15 am

1 stop28h 29m

Singapore Changi

Mon 7/28

8:45 am-11:13 pm

1 stop27h 28m

$1,125

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 49 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 $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 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 June 12, 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 12, 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
1,202 reviews

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Overall

8.4

Food

8.1

Crew

8.6

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
1,202 reviews
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Overall

8.4

Food

8.1

Crew

8.6

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
1,088 reviews
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Overall

8.4

Food

8.1

Crew

8.6

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
1,490 reviews
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Overall

8.4

Food

8.1

Crew

8.6

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
738 reviews
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Overall

8.4

Food

8.1

Crew

8.6

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
882 reviews
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Overall

8.4

Food

8.1

Crew

8.6

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 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.

  • 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 $367 on Air India. Other airlines that offer cheap prices include IndiGo from $432 and Japan Airlines from $483 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 $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

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Alternative routes for Illinois to Singapore

See prices for flight routes from nearby airports that may be better suited for you.
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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 June 12, 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%

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