How long is the flight from Illinois to Singapore?

Departing from Illinois to Singapore will take you 29h 12m. 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 $355 on Cathay Pacific. Other airlines that offer cheap prices include United Airlines from $446 and Turkish Airlines from $459 one-way.

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.

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).

What is the cheapest time of day to fly from IL to SG?

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.

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.

$239+ Flights from Illinois to Singapore

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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 January 1, 2026.

Tue 12/306:15 amORD - SIN

1 stop24h 00mUnited Airlines

Tue 1/610:20 pmSIN - ORD

1 stop21h 24mUnited Airlines

Deal found 12/29

$1,319

Tue 12/301:10 pmORD - SIN

2 stops31h 05mMultiple Airlines

Tue 1/610:55 pmSIN - ORD

3 stops34h 40mMultiple Airlines

Deal found 12/29

$2,223

Tue 12/308:20 pmORD - SIN

1 stop31h 15mTurkish Airlines

Tue 1/610:25 amSIN - ORD

1 stop46h 00mTurkish Airlines

Deal found 12/29

$4,199

Tue 12/308:05 amSTL - SIN

2 stops43h 30mMultiple Airlines

Tue 1/610:25 pmSIN - STL

2 stops33h 49mMultiple Airlines

Deal found 12/29

$16,877

Tue 12/301:05 pmSTL - SIN

2 stops27h 45mLufthansa

Tue 1/611:55 pmSIN - STL

1 stop28h 00mLufthansa

Deal found 12/29

$19,954

Best flights from Illinois to Singapore
Discover carefully curated flight deals from Illinois to Singapore that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated January 1, 2026.

Mon 4/66:38 amSTL - SIN

2 stops29h 12mCathay Pacific

Mon 4/206:00 pmSIN - STL

2 stops42h 59mCathay Pacific

Deal found 12/31

$978

Tue 5/126:20 amSTL - SIN

2 stops40h 25mMultiple Airlines

Mon 5/251:50 amSIN - STL

2 stops31h 36mMultiple Airlines

Deal found 12/31

$1,030

Mon 4/68:30 amSTL - SIN

1 stop33h 15mUnited Airlines

Mon 4/208:40 pmSIN - STL

1 stop22h 10mUnited Airlines

Deal found 12/31

$1,125

Fri 1/161:35 pmSTL - SIN

2 stops27h 00mAmerican Airlines

Sat 1/3110:25 pmSIN - STL

2 stops28h 38mAmerican Airlines

Deal found 12/31

$1,126

Fri 1/2311:28 amMLI - SIN

2 stops31h 17mQatar Airways

Mon 1/263:15 amSIN - MLI

2 stops33h 08mQatar Airways

Deal found 12/29

$1,216

Sat 3/77:00 amORD - SIN

2 stops35h 45mAlaska Airlines

Fri 3/273:15 amSIN - ORD

1 stop25h 15mAlaska Airlines

Deal found 1/1

$1,238

Sun 5/177:55 pmORD - SIN

2 stops38h 45mDelta

Sun 8/2310:30 pmSIN - ORD

2 stops31h 15mDelta

Deal found 12/31

$1,294

Fri 1/1611:05 amSTL - SIN

2 stops43h 05mCathay Pacific

Sat 1/318:40 amSIN - STL

2 stops47h 34mCathay Pacific

Deal found 12/29

$1,107

Fri 1/1611:05 amSTL - SIN

2 stops28h 35mMultiple Airlines

Sat 1/312:05 pmSIN - STL

2 stops23h 54mMultiple Airlines

Deal found 12/30

$1,111

Tue 5/126:40 amSTL - SIN

2 stops35h 05mUnited Airlines

Tue 5/268:45 amSIN - STL

1 stop22h 08mUnited Airlines

Deal found 12/31

$1,129

Tue 3/244:19 pmORD - SIN

2 stops27h 26mQatar Airways

Sat 4/43:15 amSIN - ORD

1 stop24h 35mQatar Airways

Deal found 12/30

$1,225

Sun 5/106:00 amMDW - SIN

2 stops34h 00mDelta

Sun 5/1710:30 pmSIN - MDW

2 stops30h 55mDelta

Deal found 12/30

$1,302

Fri 2/272:45 pmSTL - SIN

2 stops27h 15mUnited Airlines

Sun 3/810:10 amSIN - STL

1 stop25h 15mUnited Airlines

Deal found 12/31

$1,229

Wed 2/111:00 pmORD - SIN

3 stops45h 40mMultiple Airlines

Mon 3/22:25 pmSIN - ORD

2 stops37h 46mMultiple Airlines

Deal found 12/31

$1,238

Thu 3/128:05 pmORD - SIN

1 stop29h 50mQatar Airways

Sat 3/288:15 pmSIN - ORD

2 stops50h 50mQatar Airways

Deal found 12/29

$1,258

Wed 3/257:25 amORD - SIN

2 stops27h 45mDelta

Fri 4/310:30 pmSIN - ORD

2 stops28h 18mDelta

Deal found 12/30

$1,302

Fri 1/168:45 amSTL - SIN

2 stops26h 10mUnited Airlines

Sat 1/3110:20 pmSIN - STL

1 stop20h 51mUnited Airlines

Deal found 12/30

$1,237

Tue 3/178:05 pmORD - SIN

1 stop29h 50mQatar Airways

Sat 3/288:15 pmSIN - ORD

2 stops50h 50mQatar Airways

Deal found 12/29

$1,258

Thu 2/53:40 pmMDW - SIN

3 stops31h 25mMultiple Airlines

Wed 2/252:25 pmSIN - MDW

2 stops35h 40mMultiple Airlines

Deal found 12/31

$1,274

Thu 3/267:25 amORD - SIN

2 stops32h 35mDelta

Fri 4/37:30 amSIN - ORD

2 stops29h 22mDelta

Deal found 12/30

$1,302

Sat 3/76:50 pmORD - SIN

1 stop30h 05mQatar Airways

Sun 3/297:40 pmSIN - ORD

2 stops31h 21mQatar Airways

Deal found 1/1

$1,271

Sun 2/13:40 pmMDW - SIN

3 stops33h 50mMultiple Airlines

Tue 2/102:25 pmSIN - MDW

2 stops36h 10mMultiple Airlines

Deal found 12/30

$1,276

Sat 3/711:25 amORD - SIN

1 stop22h 45mDelta

Sat 3/2810:30 pmSIN - ORD

2 stops28h 08mDelta

Deal found 12/31

$1,310

Fri 2/136:00 amSTL - SIN

2 stops36h 00mUnited Airlines

Fri 2/2010:10 amSIN - STL

3 stops26h 04mUnited Airlines

Deal found 12/30

$1,326

Sat 3/76:20 pmMDW - SIN

2 stops28h 45mMultiple Airlines

Sun 3/291:45 pmSIN - MDW

2 stops28h 55mMultiple Airlines

Deal found 12/30

$1,276

Sat 3/148:05 pmORD - SIN

1 stop29h 50mQatar Airways

Sat 3/288:15 pmSIN - ORD

2 stops50h 50mQatar Airways

Deal found 12/29

$1,298

Sat 3/146:25 amMDW - SIN

2 stops33h 35mDelta

Sat 4/41:10 amSIN - MDW

2 stops34h 21mDelta

Deal found 12/31

$1,315

Wed 3/410:30 amMDW - SIN

2 stops36h 35mMultiple Airlines

Sun 3/291:45 pmSIN - MDW

2 stops34h 25mMultiple Airlines

Deal found 12/31

$1,291

Fri 3/206:25 amMDW - SIN

2 stops33h 35mDelta

Sat 3/2810:30 pmSIN - MDW

2 stops37h 01mDelta

Deal found 12/30

$1,315

Mon 2/27:10 amEVV - SIN

2 stops41h 45mQatar Airways

Thu 2/58:15 pmSIN - EVV

2 stops38h 43mQatar Airways

Deal found 12/29

$1,347

Last-minute flights from Illinois to Singapore
Discover last-minute flight deals from Illinois to Singapore. Data last updated January 1, 2026 and is based on user searches.

Sun 1/410:10 pmORD - SIN

1 stop32h 05mUnited Airlines

Tue 1/2010:20 pmSIN - ORD

1 stop28h 50mUnited Airlines

Deal found 12/30

$1,240

Tue 1/67:58 pmORD - SIN

1 stop34h 17mUnited Airlines

Sun 1/186:35 amSIN - ORD

1 stop21h 15mUnited Airlines

Deal found 12/31

$1,292

Fri 1/1611:05 amSTL - SIN

2 stops43h 05mCathay Pacific

Sat 1/318:40 amSIN - STL

2 stops47h 34mCathay Pacific

Deal found 12/29

$1,107

Fri 1/1611:05 amSTL - SIN

2 stops28h 35mMultiple Airlines

Sat 1/312:05 pmSIN - STL

2 stops23h 54mMultiple Airlines

Deal found 12/30

$1,111

Fri 1/161:35 pmSTL - SIN

2 stops27h 00mAmerican Airlines

Sat 1/3110:25 pmSIN - STL

2 stops28h 38mAmerican Airlines

Deal found 12/31

$1,126

Fri 1/168:45 amSTL - SIN

2 stops26h 10mUnited Airlines

Sat 1/3110:20 pmSIN - STL

1 stop20h 51mUnited Airlines

Deal found 12/30

$1,237

Mon 1/196:14 pmMDW - SIN

2 stops39h 56mDelta

Tue 2/310:30 pmSIN - MDW

2 stops28h 21mDelta

Deal found 12/31

$1,265

Thu 1/221:00 pmORD - SIN

3 stops34h 05mMultiple Airlines

Thu 1/292:25 pmSIN - ORD

3 stops46h 10mMultiple Airlines

Deal found 12/29

$1,291

Fri 1/2311:28 amMLI - SIN

2 stops31h 17mQatar Airways

Mon 1/263:15 amSIN - MLI

2 stops33h 08mQatar Airways

Deal found 12/29

$1,216

Sun 1/258:00 amORD - SIN

2 stops39h 05mMultiple Airlines

Sun 2/12:00 amSIN - ORD

3 stops51h 25mMultiple Airlines

Deal found 12/28

$1,284

Mon 1/263:35 pmORD - SIN

2 stops31h 30mMultiple Airlines

Mon 2/22:25 pmSIN - ORD

3 stops46h 10mMultiple Airlines

Deal found 12/30

$1,224

Thu 1/2911:10 amMDW - SIN

3 stops35h 55mMultiple Airlines

Thu 2/52:25 pmSIN - MDW

2 stops36h 00mMultiple Airlines

Deal found 12/30

$1,305

One-way flights from Illinois to Singapore
Search for one-way flight options from Illinois to Singapore. Find affordable one-way fares based on user searches. Data last updated January 1, 2026.

Tue 3/35:58 pmORD - SIN

2 stops29h 02mMultiple Airlines

Deal found 12/30

$239

Mon 3/29:22 pmMDW - SIN

3 stops49h 38mMultiple Airlines

Deal found 12/30

$263

Thu 2/265:58 pmORD - SIN

2 stops29h 02mMultiple Airlines

Deal found 12/30

$281

Tue 3/37:30 amMDW - SIN

3 stops39h 30mMultiple Airlines

Deal found 12/30

$286

Wed 3/48:16 pmORD - SIN

3 stops50h 44mMultiple Airlines

Deal found 12/30

$310

Mon 3/236:10 pmORD - SIN

3 stops53h 50mMultiple Airlines

Deal found 12/30

$312

Wed 2/253:54 pmORD - SIN

2 stops31h 06mMultiple Airlines

Deal found 12/30

$341

Mon 4/271:10 pmORD - SIN

1 stop29h 20mAir India

Deal found 12/30

$354

Sun 3/11:30 pmORD - SIN

1 stop27h 30mAir India

Deal found 12/31

$359

Mon 3/21:30 pmORD - SIN

1 stop27h 30mAir India

Deal found 12/30

$372

Wed 3/41:30 pmORD - SIN

1 stop27h 30mAir India

Deal found 12/30

$374

Sun 4/191:10 pmORD - SIN

1 stop43h 35mAir India

Deal found 12/30

$377

Find flight deals from Illinois to Singapore

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$978 (oojo)
One-way from	$239 (Kiwi.com)
Popular in	December
Cheapest in	February
Average price	$1,123

Provider with most accurate pricing for Chicago (CHI)-Singapore Changi flight deals.

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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 ($210 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 January 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 4/6

6:38 am-12:50 am

2 stops29h 12m

Singapore Changi

Mon 4/20

6:00 pm-11:59 pm

2 stops42h 59m

$978

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 5/12

6:20 am-11:45 am

2 stops40h 25m

Singapore Changi

Mon 5/25

1:50 am-8:26 pm

2 stops31h 36m

$1,030

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 1/16

11:05 am-8:10 pm

2 stops43h 05m

Singapore Changi

Sat 1/31

8:40 am-6:14 pm

2 stops47h 34m

$1,107

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

$1,111

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 4/6

8:30 am-6:45 am

1 stop33h 15m

Singapore Changi

Mon 4/20

8:40 pm-5:50 am

1 stop22h 10m

$1,125

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 1/16

1:35 pm-6:35 am

2 stops27h 00m

Singapore Changi

Sat 1/31

10:25 pm-1:03 pm

2 stops28h 38m

$1,126

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 5/12

6:40 am-6:45 am

2 stops35h 05m

Singapore Changi

Tue 5/26

8:45 am-5:53 pm

1 stop22h 08m

$1,129

MolineSingapore

MLI - SIN

MLISIN

Moline Quad-City

Fri 1/23

11:28 am-8:45 am

2 stops31h 17m

Singapore Changi

Mon 1/26

3:15 am-10:23 pm

2 stops33h 08m

$1,216

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Tue 3/24

4:19 pm-8:45 am

2 stops27h 26m

Singapore Changi

Sat 4/4

3:15 am-2:50 pm

1 stop24h 35m

$1,225

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 2/27

2:45 pm-8:00 am

2 stops27h 15m

Singapore Changi

Sun 3/8

10:10 am-9:25 pm

1 stop25h 15m

$1,229

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/30

Showing 1-10 of 55 results

...

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 $662). 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

How long is the flight from Illinois to Singapore?
Departing from Illinois to Singapore will take you 29h 12m. 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 $355 on Cathay Pacific. Other airlines that offer cheap prices include United Airlines from $446 and Turkish Airlines from $459 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 $662). 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

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Top 10 airlines flying from Illinois to Singapore

Airline	Cheapest	Average	Flexibility	On-time
Air India	Cheapest$675	Average$921	FlexibilityNo cancel fee	On-timeN/A
Cathay Pacific	Cheapest$701	Average$882	FlexibilityNo cancel fee	On-time72%
United Airlines	Cheapest$709	Average$1,208	FlexibilityNo cancel fee	On-time69%
Turkish Airlines	Cheapest$770	Average$980	FlexibilityNo cancel fee	On-time77%
Japan Airlines	Cheapest$818	Average$1,081	FlexibilityNo cancel fee	On-time79%
Etihad Airways	Cheapest$830	Average$1,172	FlexibilityNo cancel fee	On-time75%
Qatar Airways	Cheapest$850	Average$1,204	FlexibilityNo cancel fee	On-time68%
Korean Air	Cheapest$858	Average$1,144	FlexibilityNo cancel fee	On-time81%
Air Canada	Cheapest$884	Average$1,340	FlexibilityNo cancel fee	On-time67%
ANA	Cheapest$1,024	Average$1,426	FlexibilityNo cancel fee	On-time80%

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$239+ 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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Illinois to Singapore

Cheapest flights from Illinois to SingaporeExplore 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 January 1, 2026.

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 January 1, 2026.

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 January 1, 2026.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Illinois to Singapore that are best for you.

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.

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?

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?

What are the cheapest airlines to fly from Illinois to Singapore one-way?

Can I find deals for flights from Illinois to Singapore that include hotel bookings?

How can I find direct flights from Illinois to Singapore?

Can I find deals for business class flights from Illinois to Singapore?

What is the cheapest month to book a flight from Illinois to Singapore?

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Alternative routes for Illinois to Singapore

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Top 10 airlines flying from Illinois to Singapore

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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 January 1, 2026.