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 $509 on Air India. Other airlines that offer cheap prices include Cathay Pacific from $544 and IndiGo from $601 one-way.

What is the cheapest month to fly from Illinois to Singapore?

The best pricing can be found in the month of February. Prices to Singapore from Illinois average $1,172. You can even find prices in February for less than $1,172, as users have found deals to Singapore from as low as $586. The month of December appears to be one of the more expensive times to travel to Singapore from Illinois. Flying in the targeted month can save you up to 44%.

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.

$1,375+ Flights from Illinois to Singapore

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

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

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$970 (Air Canada)
One-way from	$509 (oojo)
Popular in	December
Cheapest in	February
Average price	$1,201

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. 9% potential increase in price ($125 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($48 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in May 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 May 1, 2025.

Fri 10/33:35 pmORD - SIN

1 stop26h 30mAir Canada

Thu 10/161:45 amSIN - ORD

2 stops26h 10mAir Canada

Deal found 4/30

$970

Wed 12/318:20 pmORD - SIN

1 stop31h 15mTurkish Airlines

Tue 1/2010:05 amSIN - ORD

1 stop38h 05mTurkish Airlines

Deal found 4/30

$978

Sat 5/34:00 pmORD - SIN

1 stop24h 30mMultiple Airlines

Mon 5/191:30 pmSIN - ORD

2 stops30h 12mMultiple Airlines

Deal found 5/1

$998

Mon 5/54:00 pmORD - SIN

1 stop24h 30mCathay Pacific

Sat 5/101:50 amSIN - ORD

1 stop25h 35mCathay Pacific

Deal found 4/29

$1,002

Thu 9/181:30 pmSTL - SIN

2 stops28h 35mAir Canada

Sun 10/59:10 amSIN - STL

2 stops47h 47mAir Canada

Deal found 4/30

$1,003

Mon 5/51:55 pmORD - SIN

1 stop30h 45mEtihad Airways

Tue 7/89:10 pmSIN - ORD

1 stop24h 35mEtihad Airways

Deal found 4/29

$1,016

Tue 9/91:05 amORD - SIN

1 stop27h 25mJapan Airlines

Wed 9/248:05 amSIN - ORD

1 stop20h 40mJapan Airlines

Deal found 4/30

$1,074

Tue 5/66:30 amORD - SIN

1 stop22h 55mUnited Airlines

Thu 5/89:00 amSIN - ORD

1 stop27h 27mUnited Airlines

Deal found 4/30

$1,094

Thu 10/27:10 amORD - SIN

2 stops28h 35mANA

Tue 10/76:15 amSIN - ORD

1 stop21h 40mANA

Deal found 4/29

$1,097

Tue 9/91:05 amORD - SIN

1 stop27h 25mAmerican Airlines

Wed 9/248:05 amSIN - ORD

2 stops24h 40mAmerican Airlines

Deal found 4/30

$1,103

Sun 5/111:41 pmSTL - SIN

2 stops39h 44mUnited Airlines

Wed 5/219:00 amSIN - STL

1 stop20h 52mUnited Airlines

Deal found 4/30

$1,108

Mon 5/58:50 amORD - SIN

2 stops31h 10mDelta

Wed 6/41:10 amSIN - ORD

2 stops32h 11mDelta

Deal found 4/29

$1,108

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 May 1, 2025.

Fri 10/33:35 pmORD - SIN

1 stop26h 30mAir Canada

Thu 10/161:45 amSIN - ORD

2 stops26h 10mAir Canada

Deal found 4/30

$970

Sat 8/911:45 pmORD - SIN

1 stop44h 00mTurkish Airlines

Sun 8/1710:15 amSIN - ORD

1 stop36h 25mTurkish Airlines

Deal found 4/30

$1,016

Tue 7/84:00 pmORD - SIN

1 stop24h 30mCathay Pacific

Mon 7/211:50 amSIN - ORD

1 stop25h 35mCathay Pacific

Deal found 4/30

$1,044

Tue 9/91:05 amORD - SIN

1 stop27h 25mJapan Airlines

Wed 9/248:05 amSIN - ORD

1 stop20h 40mJapan Airlines

Deal found 4/30

$1,074

Fri 10/1712:00 pmORD - SIN

2 stops30h 05mMultiple Airlines

Fri 10/312:20 amSIN - ORD

2 stops25h 19mMultiple Airlines

Deal found 5/1

$1,075

Thu 10/27:10 amORD - SIN

2 stops28h 35mANA

Tue 10/76:15 amSIN - ORD

1 stop21h 40mANA

Deal found 4/29

$1,097

Mon 9/13:35 pmORD - SIN

2 stops25h 40mUnited Airlines

Mon 9/88:45 amSIN - ORD

1 stop21h 23mUnited Airlines

Deal found 4/29

$1,098

Tue 9/91:05 amORD - SIN

1 stop27h 25mAmerican Airlines

Wed 9/248:05 amSIN - ORD

2 stops24h 40mAmerican Airlines

Deal found 4/30

$1,103

Mon 9/17:05 amORD - SIN

2 stops27h 35mDelta

Sun 9/71:10 amSIN - ORD

2 stops33h 43mDelta

Deal found 4/29

$1,108

Sun 8/3112:30 amORD - SIN

1 stop22h 30mEVA Air

Mon 9/81:10 pmSIN - ORD

1 stop20h 35mEVA Air

Deal found 4/29

$1,116

Thu 5/151:55 pmORD - SIN

1 stop30h 45mEtihad Airways

Thu 5/299:10 pmSIN - ORD

1 stop24h 35mEtihad Airways

Deal found 4/30

$1,139

Mon 8/47:50 pmORD - SIN

2 stops32h 55mIndiGo

Fri 8/87:45 pmSIN - ORD

2 stops39h 15mIndiGo

Deal found 5/1

$1,226

Last-minute flights from Illinois to Singapore
Discover last-minute flight deals from Illinois to Singapore. Data last updated May 1, 2025 and is based on user searches.

Thu 5/11:30 pmSTL - SIN

2 stops52h 35mAir Canada

Wed 6/411:55 pmSIN - STL

2 stops33h 03mAir Canada

Deal found 4/30

$1,155

Sat 5/34:00 pmORD - SIN

1 stop24h 30mMultiple Airlines

Mon 5/191:30 pmSIN - ORD

2 stops30h 12mMultiple Airlines

Deal found 5/1

$998

Sat 5/37:50 pmORD - SIN

1 stop23h 40mTurkish Airlines

Mon 5/1911:10 pmSIN - ORD

1 stop23h 30mTurkish Airlines

Deal found 5/1

$1,218

Sun 5/412:30 amORD - SIN

1 stop24h 20mEVA Air

Thu 6/51:10 pmSIN - ORD

1 stop20h 50mEVA Air

Deal found 4/29

$1,083

Mon 5/54:00 pmORD - SIN

1 stop24h 30mCathay Pacific

Sat 5/101:50 amSIN - ORD

1 stop25h 35mCathay Pacific

Deal found 4/29

$1,002

Mon 5/51:55 pmORD - SIN

1 stop30h 45mEtihad Airways

Tue 7/89:10 pmSIN - ORD

1 stop24h 35mEtihad Airways

Deal found 4/29

$1,016

Mon 5/58:50 amORD - SIN

2 stops31h 10mDelta

Wed 6/41:10 amSIN - ORD

2 stops32h 11mDelta

Deal found 4/29

$1,108

Tue 5/66:30 amORD - SIN

1 stop22h 55mUnited Airlines

Thu 5/89:00 amSIN - ORD

1 stop27h 27mUnited Airlines

Deal found 4/30

$1,094

Tue 5/66:58 pmORD - SIN

2 stops28h 02mEVA Air

Thu 5/83:10 pmSIN - ORD

2 stops40h 10mEVA Air

Deal found 4/30

$1,261

Wed 5/76:05 pmORD - SIN

2 stops48h 00mAir Canada

Sun 5/189:10 amSIN - ORD

1 stop33h 41mAir Canada

Deal found 4/30

$5,397

Thu 5/811:25 amORD - SIN

1 stop41h 30mTurkish Airlines

Tue 6/1011:10 pmSIN - ORD

1 stop23h 30mTurkish Airlines

Deal found 4/29

$5,717

Fri 5/912:00 pmORD - SIN

1 stop42h 30mAir India

Wed 6/1111:00 pmSIN - ORD

1 stop45h 25mAir India

Deal found 4/29

$6,206

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 May 1, 2025.

Fri 9/2612:00 pmORD - SIN

1 stop30h 30mAir India

Deal found 4/30

$509

Mon 7/74:00 pmORD - SIN

1 stop30h 45mCathay Pacific

Deal found 4/30

$544

Fri 9/2612:00 pmORD - SIN

2 stops34h 55mMultiple Airlines

Deal found 4/30

$559

Mon 7/711:45 pmORD - SIN

2 stops28h 35mIndiGo

Deal found 4/30

$601

Fri 10/107:50 pmORD - SIN

1 stop23h 55mTurkish Airlines

Deal found 5/1

$602

Mon 7/79:19 amMDW - SIN

2 stops25h 21mDelta

Deal found 4/30

$621

Mon 7/76:25 amMDW - SIN

2 stops52h 15mMultiple Airlines

Deal found 4/30

$624

Thu 9/2512:30 amORD - SIN

1 stop24h 20mEVA Air

Deal found 4/30

$664

Sun 7/61:30 amORD - SIN

1 stop39h 40mJapan Airlines

Deal found 4/30

$674

Sun 5/183:35 pmORD - SIN

1 stop26h 30mAir Canada

Deal found 4/30

$697

Sun 6/81:30 pmSTL - SIN

2 stops28h 35mAir Canada

Deal found 4/30

$772

Mon 5/266:00 amORD - SIN

2 stops35h 15mUnited Airlines

Deal found 5/1

$815

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Fri 10/3

3:35 pm-7:05 am

1 stop26h 30m

Singapore Changi

Thu 10/16

1:45 am-2:55 pm

2 stops26h 10m

$970

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 9/18

1:30 pm-7:05 am

2 stops28h 35m

Singapore Changi

Sun 10/5

9:10 am-7:57 pm

2 stops47h 47m

$1,003

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Sat 8/9

11:45 pm-8:45 am

1 stop44h 00m

Singapore Changi

Sun 8/17

10:15 am-9:40 am

1 stop36h 25m

$1,016

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Tue 7/8

4:00 pm-5:30 am

1 stop24h 30m

Singapore Changi

Mon 7/21

1:50 am-2:25 pm

1 stop25h 35m

$1,044

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Tue 9/9

1:05 am-5:30 pm

1 stop27h 25m

Singapore Changi

Wed 9/24

8:05 am-3:45 pm

1 stop20h 40m

$1,074

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Fri 10/17

12:00 pm-7:05 am

2 stops30h 05m

Singapore Changi

Fri 10/31

2:20 am-2:39 pm

2 stops25h 19m

$1,075

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Thu 10/2

7:10 am-12:45 am

2 stops28h 35m

Singapore Changi

Tue 10/7

6:15 am-2:55 pm

1 stop21h 40m

$1,097

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Mon 9/1

3:35 pm-6:15 am

2 stops25h 40m

Singapore Changi

Mon 9/8

8:45 am-5:08 pm

1 stop21h 23m

$1,098

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Tue 9/9

1:05 am-5:30 pm

1 stop27h 25m

Singapore Changi

Wed 9/24

8:05 am-7:45 pm

2 stops24h 40m

$1,103

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Mon 9/1

7:05 am-11:40 pm

2 stops27h 35m

Singapore Changi

Sun 9/7

1:10 am-9:53 pm

2 stops33h 43m

$1,108

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 48 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 $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?

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

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

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

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

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

EVA Air

8.4

Very good

1,186 reviews

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Korean Air

8.4

Very good

1,069 reviews

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Japan Airlines

8.3

Very good

1,464 reviews

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

China Airlines

8.3

Very good

732 reviews

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

ANA

8.3

Very good

852 reviews

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Related info for your journey

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 $509 on Air India. Other airlines that offer cheap prices include Cathay Pacific from $544 and IndiGo from $601 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

Alternative routes for Illinois to Singapore

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

San Francisco to Narita flights

Los Angeles to Manila flights

John F Kennedy Intl to Narita flights

Dallas/Fort Worth to Narita flights

San Francisco to Manila flights

Dallas/Fort Worth to Haneda flights

Seattle to Haneda flights

Los Angeles to Suvarnabhumi flights

John F Kennedy Intl to Suvarnabhumi flights

LaGuardia to Haneda flights

Dulles Intl to Haneda flights

LaGuardia to Narita flights

Ontario to Narita flights

John F Kennedy Intl to Incheon Intl flights

Los Angeles to Incheon Intl flights

O'Hare Intl to Narita flights

Hobby to Haneda flights

O'Hare Intl to Haneda flights

Hobby to Narita flights

San Francisco to New Delhi flights

Boston to Narita flights

John F Kennedy Intl to Hong Kong flights

Seattle to Suvarnabhumi flights

Atlanta to Haneda flights

Seattle to Incheon Intl flights

Ontario to Haneda flights

Dallas/Fort Worth to Suvarnabhumi flights

San Francisco to Hong Kong flights

Los Angeles to Taiwan Taoyuan Intl flights

John F Kennedy Intl to Taiwan Taoyuan Intl flights

Dulles Intl to Narita flights

Newark to New Delhi flights

Burbank to Narita flights

Newark to Suvarnabhumi flights

Los Angeles to Ho Chi Minh City flights

George Bush Intcntl to Haneda flights

John F Kennedy Intl to Mumbai flights

John F Kennedy Intl to Hongqiao Intl flights

John F Kennedy Intl to New Delhi flights

LaGuardia to Suvarnabhumi flights

Denver to Narita flights

John F Kennedy Intl to Manila flights

O'Hare Intl to Suvarnabhumi flights

Top 10 airlines flying from Illinois to Singapore

Airline	Cheapest	Average	Flexibility	On-time
Turkish Airlines	Cheapest$735	Average$923	FlexibilityNo cancel fee	On-time77%
Japan Airlines	Cheapest$741	Average$845	FlexibilityNo cancel fee	On-time79%
Cathay Pacific	Cheapest$821	Average$1,005	FlexibilityNo cancel fee	On-time72%
United Airlines	Cheapest$885	Average$1,322	FlexibilityNo cancel fee	On-time69%
Air Canada	Cheapest$895	Average$1,253	FlexibilityNo cancel fee	On-time67%
Korean Air	Cheapest$985	Average$1,400	FlexibilityNo cancel fee	On-time81%
EVA Air	Cheapest$1,051	Average$1,318	FlexibilityNo cancel fee	On-time74%
ANA	Cheapest$1,086	Average$1,687	FlexibilityNo cancel fee	On-time80%
Qatar Airways	Cheapest$1,189	Average$1,248	FlexibilityNo cancel fee	On-time68%
Finnair	Cheapest$1,203	Average$1,349	FlexibilityNo cancel fee	On-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.

$509+ 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 9/26. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Illinois to Singapore with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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 May 1, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find 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 May 1, 2025.

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 May 1, 2025.

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?

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 May 1, 2025.

Rainfall in Singapore by month

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

Temperature in Singapore by month

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

Reviews of airlines servicing Singapore

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.

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?

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?

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.

Top 10 airlines flying from Illinois to Singapore

100% Free

Book with Flexibility

Travel Smart

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 May 1, 2025.