What airlines fly to Singapore?

United Airlines, Cathay Pacific and Turkish Airlines are the top three most popular airlines that fly to Singapore from Illinois according to our data. United Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Singapore. Keep in mind that there are 14 different airlines that fly to Singapore on a routine basis, so you have a few additional options to choose from.

How long is the flight from Illinois to Singapore?

Flight times from Illinois to Singapore vary, but if you’re flying out of Chicago and flying into Singapore (one of the most popular routes), then the duration is 25h 47m on average. Another popular route from Illinois to Singapore is flying from Moline to Singapore, which will take roughly 31h 17m. Keep in mind that layovers or delays could extend your travel time.

What is the cheapest airline that flies from Illinois to Singapore?

Air India, IndiGo, and Delta are the most popular carriers operating from Illinois to Singapore

When did momondo last update prices for flights from Illinois to Singapore?

Prices for flights from Illinois to Singapore refresh daily.

How many operators does momondo search for flights from Illinois to Singapore?

As of December 2025, there are 14 operators available to choose from for flights from Illinois to Singapore.

How old do you have to be to fly from Illinois to Singapore?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Singapore.

What documentation or ID do you need to fly to Singapore?

The required travel and health documents for your Singapore trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Singapore. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$252 Cheap Flights from Illinois to Singapore in 2025/26

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Find the cheapest flights from Illinois to Singapore

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6:43 pm - 9:25 am

STL

SIN

48h 42m2 stops

10:00 am - 11:48 pm

SIN

STL

27h 48m2 stops

$1,034Cathay Pacific

Sat, Jan 31 - Wed, Feb 18

6:38 am - 12:25 am

STL

SIN

28h 47m2 stops

1:25 am - 6:01 pm

SIN

STL

29h 36m2 stops

$1,081Cathay Pacific

Mon, Mar 9 - Mon, Mar 16

6:38 am - 12:25 am

STL

SIN

28h 47m2 stops

8:15 pm - 6:01 pm

SIN

STL

34h 46m2 stops

$1,090Cathay Pacific

Mon, Mar 9 - Mon, Mar 16

4:05 pm - 7:00 am

STL

SIN

48h 55m2 stops

8:50 am - 2:29 pm

SIN

STL

43h 39m2 stops

$1,115Air Canada

Sat, Feb 21 - Sat, Mar 7

5:55 pm - 8:15 pm

STL

SIN

37h 20m2 stops

10:20 pm - 4:04 pm

SIN

STL

30h 44m2 stops

$1,129United Airlines

Sun, Mar 8 - Tue, Mar 17

6:32 am - 5:00 am

STL

SIN

33h 28m2 stops

10:30 pm - 11:15 pm

SIN

STL

37h 45m2 stops

$1,138Delta

Mon, Mar 9 - Sun, Mar 15

11:28 am - 8:45 am

MLI

SIN

31h 17m2 stops

8:15 pm - 10:23 pm

SIN

MLI

40h 08m2 stops

$1,216Qatar Airways

Fri, Jan 23 - Tue, Jan 27

2:00 pm - 7:00 am

ORD

SIN

27h 00m2 stops

8:30 am - 8:00 pm

SIN

ORD

24h 30m2 stops

$1,243Air Canada

Fri, Mar 6 - Mon, Mar 9

8:30 pm - 12:10 am

ORD

SIN

38h 40m2 stops

10:30 pm - 9:34 pm

SIN

ORD

36h 04m2 stops

$1,254Delta

Fri, Mar 20 - Sun, Apr 5

7:10 am - 8:45 am

EVV

SIN

35h 35m2 stops

3:15 am - 8:58 pm

SIN

EVV

31h 43m2 stops

$1,347Qatar Airways

Mon, Feb 2 - Wed, Feb 4

Air Canada flights from Illinois to Singapore

Our best Air Canada deals on Illinois to Singapore flight tickets

Air Canada

Feb 21

STL4:05 pmLambert-St Louis

48h 55m

2 stops

SIN7:00 amSingapore Changi

Mar 7

SIN8:50 amSingapore Changi

43h 39m

2 stops

STL2:29 pmLambert-St Louis

$1,115

Find similar

Air Canada

Mar 6

STL7:41 amLambert-St Louis

33h 19m

2 stops

SIN7:00 amSingapore Changi

Mar 15

SIN8:50 amSingapore Changi

43h 39m

2 stops

STL3:29 pmLambert-St Louis

$1,151

Find similar

Air Canada

Feb 7

STL4:05 pmLambert-St Louis

48h 55m

2 stops

SIN7:00 amSingapore Changi

Feb 14

SIN8:50 amSingapore Changi

44h 39m

2 stops

STL3:29 pmLambert-St Louis

$1,208

Find similar

United Airlines flights from Illinois to Singapore

Our best United Airlines deals on Illinois to Singapore flight tickets

United Airlines

Mar 8

STL5:55 pmLambert-St Louis

37h 20m

2 stops

SIN8:15 pmSingapore Changi

Mar 16

SIN10:10 amSingapore Changi

25h 15m

1 stop

STL10:25 pmLambert-St Louis

$1,129

Find similar

United Airlines

Mar 9

STL11:25 amLambert-St Louis

30h 30m

2 stops

SIN6:55 amSingapore Changi

Mar 17

SIN10:20 pmSingapore Changi

37h 05m

1 stop

STL10:25 pmLambert-St Louis

$1,144

Find similar

United Airlines

Mar 7

STL6:51 amLambert-St Louis

23h 24m

1 stop

SIN8:15 pmSingapore Changi

Mar 16

SIN10:10 amSingapore Changi

25h 15m

1 stop

STL10:25 pmLambert-St Louis

$1,175

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sat 1/31

6:43 pm-9:25 am

2 stops48h 42m

Singapore Changi

Wed 2/18

10:00 am-11:48 pm

2 stops27h 48m

$1,034

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 3/9

6:38 am-12:25 am

2 stops28h 47m

Singapore Changi

Mon 3/16

1:25 am-6:01 pm

2 stops29h 36m

$1,081

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 3/9

6:38 am-12:25 am

2 stops28h 47m

Singapore Changi

Mon 3/16

8:15 pm-6:01 pm

2 stops34h 46m

$1,090

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sat 2/21

4:05 pm-7:00 am

2 stops48h 55m

Singapore Changi

Sat 3/7

8:50 am-2:29 pm

2 stops43h 39m

$1,115

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 3/8

5:55 pm-8:15 pm

2 stops37h 20m

Singapore Changi

Tue 3/17

10:20 pm-4:04 pm

2 stops30h 44m

$1,129

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 3/9

6:32 am-5:00 am

2 stops33h 28m

Singapore Changi

Sun 3/15

10:30 pm-11:15 pm

2 stops37h 45m

$1,138

MolineSingapore

MLI - SIN

MLISIN

Moline Quad-City

Fri 1/23

11:28 am-8:45 am

2 stops31h 17m

Singapore Changi

Tue 1/27

8:15 pm-10:23 pm

2 stops40h 08m

$1,216

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Fri 3/6

2:00 pm-7:00 am

2 stops27h 00m

Singapore Changi

Mon 3/9

8:30 am-8:00 pm

2 stops24h 30m

$1,243

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Fri 3/20

8:30 pm-12:10 am

2 stops38h 40m

Singapore Changi

Sun 4/5

10:30 pm-9:34 pm

2 stops36h 04m

$1,254

EvansvilleSingapore

EVV - SIN

EVVSIN

Evansville Dress Regional

Mon 2/2

7:10 am-8:45 am

2 stops35h 35m

Singapore Changi

Wed 2/4

3:15 am-8:58 pm

2 stops31h 43m

$1,347

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Illinois to Singapore

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Singapore?

The month of February is, on average, the cheapest month to fly to Singapore from Illinois, with most prices found around $801. If you aren’t able to travel to Singapore during the month of February, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $849.

What is the cheapest day to depart on your flight to Singapore?

The cheapest day to depart from Illinois to Singapore is on a Monday when prices can be found for as low as $1,126. The most expensive day to fly to Singapore is Friday, with ticket prices averaging around $1,491.

What is the cheapest time of day to depart on your flight to Singapore?

At noon is the cheapest time of day to fly from Illinois to Singapore when you can find flight prices for as low as $1,156. Flying to Singapore at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $1,411 on average. Flights to Singapore from Illinois in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to Singapore?

You are more likely to see cheaper flights to Singapore from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Singapore for around $1,150 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Singapore from Illinois for as low as $1,063 on momondo.

Can stopping save me money on Illinois to Singapore flights?

You could potentially save up to 64% on your flight if you consider stops on a Illinois to Singapore flight.

Cheap Illinois to Singapore flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Singapore

Fastest flight time	22h 10m
Direct flights	None

The fastest flight from Illinois to Singapore takes 22h 10m

There are no direct flights from Illinois to Singapore. There are no popular flight routes from Illinois to Singapore.

Search flight deals

When did momondo last update prices for flights from Illinois to Singapore?
Prices for flights from Illinois to Singapore refresh daily.
How many operators does momondo search for flights from Illinois to Singapore?
As of December 2025, there are 14 operators available to choose from for flights from Illinois to Singapore.
How old do you have to be to fly from Illinois to Singapore?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Singapore.
What documentation or ID do you need to fly to Singapore?
The required travel and health documents for your Singapore trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Singapore. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Illinois to Singapore

Compare and see reviews for airlines that fly from Illinois to Singapore with momondo

Airline	Rating	Free Cancellation	Price
Air India	PriceFrom $675	Free Cancellation	Rating 5.5 2,957 reviews	Search Air India flights
Cathay Pacific	PriceFrom $701	Free Cancellation	Rating 7.6 1,105 reviews	Search Cathay Pacific flights
United Airlines	PriceFrom $709	Free Cancellation	Rating 7.4 9,116 reviews	Search United Airlines flights
Turkish Airlines	PriceFrom $770	Free Cancellation	Rating 7.3 4,116 reviews	Search Turkish Airlines flights
Japan Airlines	PriceFrom $791	Free Cancellation	Rating 8.3 1,662 reviews	Search Japan Airlines flights
Etihad Airways	PriceFrom $830	Free Cancellation	Rating 7.4 1,337 reviews	Search Etihad Airways flights
Qatar Airways	PriceFrom $850	Free Cancellation	Rating 7.4 3,692 reviews	Search Qatar Airways flights
Air Canada	PriceFrom $884	Free Cancellation	Rating 7.1 10,562 reviews	Search Air Canada flights
Korean Air	PriceFrom $940	Free Cancellation	Rating 8.4 1,185 reviews	Search Korean Air flights
ANA	PriceFrom $1,024	Free Cancellation	Rating 8.4 1,045 reviews	Search ANA flights

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Singapore?

It is quick and easy to find Illinois to Singapore flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Singapore that suits you.

Can I find flights from Illinois to Singapore with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Illinois to Singapore flights to just show those with flexible booking policies.

How can momondo help me find flights from Illinois to Singapore?

Once you have performed a search for Illinois to Singapore flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Illinois to Singapore right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Singapore from Illinois. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Singapore trip

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Cheap flights from Illinois to Singapore from $252

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Singapore departing on 3/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

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Trusted and free

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Price Alerts

Find the cheapest flights from Illinois to Singapore

Cheap round-trip flights

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Cheap last minute flights

Air Canada flights from Illinois to Singapore

Our best Air Canada deals on Illinois to Singapore flight tickets

United Airlines flights from Illinois to Singapore

Our best United Airlines deals on Illinois to Singapore flight tickets

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

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How to get the cheapest flight ticket from Illinois to Singapore

What is the cheapest month to fly to Singapore?

What is the cheapest day to depart on your flight to Singapore?

The cheapest day to depart from Illinois to Singapore is on a Monday when prices can be found for as low as $1,126. The most expensive day to fly to Singapore is Friday, with ticket prices averaging around $1,491.

What is the cheapest time of day to depart on your flight to Singapore?

How far in advance should I book a flight to Singapore?

Can stopping save me money on Illinois to Singapore flights?

You could potentially save up to 64% on your flight if you consider stops on a Illinois to Singapore flight.

What is the cheapest airline that flies from Illinois to Singapore?

Air India, IndiGo, and Delta are the most popular carriers operating from Illinois to Singapore

What airlines fly to Singapore?

How long is the flight from Illinois to Singapore?

Cheap Illinois to Singapore flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Singapore

Fastest flight time

Direct flights

When did momondo last update prices for flights from Illinois to Singapore?

How many operators does momondo search for flights from Illinois to Singapore?

How old do you have to be to fly from Illinois to Singapore?

What documentation or ID do you need to fly to Singapore?

Best airlines flying from Illinois to Singapore

Compare and see reviews for airlines that fly from Illinois to Singapore with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Singapore?

Can I find flights from Illinois to Singapore with flexible booking policies on momondo?

How can momondo help me find flights from Illinois to Singapore?

I’m not ready to book a flight from Illinois to Singapore right now. Can momondo alert me if prices change?

An easier way to manage your Singapore trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Singapore

Popular cities in Singapore

Popular flights according to clicks in the last 7 days on momondo