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

Cathay Pacific, Air Canada, and IndiGo are the most popular carriers operating from Illinois to Singapore Changi

How long does it take to fly to Singapore?

The flight from Illinois to Singapore depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Chicago (a popular airport in Illinois) to Singapore (the most popular airport in Singapore), then the flight time is 24h 10m on average. If you fly from Moline (another popular airport in Illinois) to Singapore, then the average flight time is 30h 25m.

What airlines fly to Singapore?

United Airlines, Turkish Airlines and Cathay Pacific 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 30% of people opting to fly with this airline when traveling to Singapore. Keep in mind that there are 10 different airlines that fly to Singapore on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Illinois to Singapore Changi Airport refresh daily.

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

As of August 2025, there are 10 operators available to choose from for flights from Illinois to Singapore Changi Airport.

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

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 Changi Airport.

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

The required travel and health documents for your Singapore Changi Airport 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 Changi Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$355 Cheap Flights from Illinois to Singapore in 2025

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Round-trip

One-way

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Cheap round-trip flights

7:10 am - 12:45 amORD-SIN

28h 35m2 stops

6:15 am - 7:35 pmSIN-ORD

26h 20m2 stops

$721ANA

Find Deal

mié., sep. 10 - jue., sep. 25

4:00 pm - 5:30 amORD-SIN

24h 30m1 stop

1:50 am - 2:25 pmSIN-ORD

25h 35m1 stop

$726Cathay Pacific

Find Deal

sáb., sep. 13 - vie., sep. 19

7:43 pm - 6:25 pmORD-SIN

33h 42m1 stop

8:40 pm - 5:58 amSIN-ORD

22h 18m1 stop

$740United Airlines

Find Deal

vie., sep. 12 - vie., sep. 26

2:25 pm - 6:15 amORD-SIN

26h 50m1 stop

8:40 pm - 4:53 amSIN-ORD

21h 13m1 stop

$743United Airlines

Find Deal

sáb., ago. 30 - dom., sep. 7

12:10 pm - 12:20 amORD-SIN

23h 10m1 stop

2:00 am - 8:15 amSIN-ORD

43h 15m2 stops

$752

Find Deal

dom., sep. 14 - vie., sep. 19

1:10 pm - 7:15 amORD-SIN

29h 05m1 stop

8:45 am - 11:10 amSIN-ORD

39h 25m2 stops

$791Air India

Find Deal

dom., ago. 31 - dom., sep. 7

6:30 am - 11:20 pmORD-SIN

27h 50m2 stops

12:20 am - 11:59 pmSIN-ORD

36h 39m2 stops

$796

Find Deal

jue., oct. 2 - mié., oct. 8

10:40 am - 7:05 amORD-SIN

31h 25m2 stops

6:15 am - 8:11 pmSIN-ORD

26h 56m2 stops

$842Air Canada

Find Deal

dom., ago. 31 - dom., sep. 7

2:00 pm - 7:05 amORD-SIN

28h 05m2 stops

9:10 am - 9:08 amSIN-ORD

36h 58m2 stops

$843Air Canada

Find Deal

dom., sep. 7 - jue., sep. 25

1:10 pm - 7:15 amORD-SIN

29h 05m1 stop

11:00 pm - 11:10 amSIN-ORD

49h 10m2 stops

$859Air India

Find Deal

dom., ago. 31 - sáb., sep. 13

United Airlines flights from Illinois to Singapore

Our best United Airlines deals on Illinois to Singapore flight tickets

United Airlines

Aug 21

ORD8:49 amChicago O'Hare Intl

26h 56m

2 stops

SIN12:45 amSingapore Changi

Aug 29

SIN11:05 amSingapore Changi

26h 24m

2 stops

ORD12:29 amChicago O'Hare Intl

$724

Find similar

United Airlines

Aug 21

ORD8:49 amChicago O'Hare Intl

26h 56m

2 stops

SIN12:45 amSingapore Changi

Aug 29

SIN6:15 amSingapore Changi

25h 38m

2 stops

ORD6:53 pmChicago O'Hare Intl

$727

Find similar

United Airlines

Sep 12

ORD7:43 pmChicago O'Hare Intl

33h 42m

1 stop

SIN6:25 pmSingapore Changi

Sep 26

SIN8:40 pmSingapore Changi

22h 18m

1 stop

ORD5:58 amChicago O'Hare Intl

$740

Find similar

ANA flights from Illinois to Singapore

Our best ANA deals on Illinois to Singapore flight tickets

ANA

Aug 24

ORD5:45 pmChicago O'Hare Intl

23h 55m

1 stop

SIN6:40 amSingapore Changi

Aug 28

SIN6:15 amSingapore Changi

21h 40m

1 stop

ORD2:55 pmChicago O'Hare Intl

$719

Find similar

ANA

Sep 10

ORD7:10 amChicago O'Hare Intl

28h 35m

2 stops

SIN12:45 amSingapore Changi

Sep 25

SIN6:15 amSingapore Changi

26h 20m

2 stops

ORD7:35 pmChicago O'Hare Intl

$721

Find similar

ANA

Sep 2

ORD5:45 pmChicago O'Hare Intl

23h 55m

1 stop

SIN6:40 amSingapore Changi

Sep 12

SIN6:15 amSingapore Changi

27h 10m

2 stops

ORD8:25 pmChicago O'Hare Intl

$744

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

mié. 9/10

7:10 am-12:45 am

2 stops28h 35m

Singapore Changi

jue. 9/25

6:15 am-7:35 pm

2 stops26h 20m

$721

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

sáb. 9/13

4:00 pm-5:30 am

1 stop24h 30m

Singapore Changi

vie. 9/19

1:50 am-2:25 pm

1 stop25h 35m

$726

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

vie. 9/12

7:43 pm-6:25 pm

1 stop33h 42m

Singapore Changi

vie. 9/26

8:40 pm-5:58 am

1 stop22h 18m

$740

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

sáb. 8/30

2:25 pm-6:15 am

1 stop26h 50m

Singapore Changi

dom. 9/7

8:40 pm-4:53 am

1 stop21h 13m

$743

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

dom. 9/14

12:10 pm-12:20 am

1 stop23h 10m

Singapore Changi

vie. 9/19

2:00 am-8:15 am

2 stops43h 15m

$752

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

dom. 8/31

1:10 pm-7:15 am

1 stop29h 05m

Singapore Changi

dom. 9/7

8:45 am-11:10 am

2 stops39h 25m

$791

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

jue. 10/2

6:30 am-11:20 pm

2 stops27h 50m

Singapore Changi

mié. 10/8

12:20 am-11:59 pm

2 stops36h 39m

$796

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

dom. 8/31

10:40 am-7:05 am

2 stops31h 25m

Singapore Changi

dom. 9/7

6:15 am-8:11 pm

2 stops26h 56m

$842

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

dom. 9/7

2:00 pm-7:05 am

2 stops28h 05m

Singapore Changi

jue. 9/25

9:10 am-9:08 am

2 stops36h 58m

$843

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

dom. 8/31

1:10 pm-7:15 am

1 stop29h 05m

Singapore Changi

sáb. 9/13

11:00 pm-11:10 am

2 stops49h 10m

$859

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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 $851. 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 $893.

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

The cheapest day to depart from Illinois to Singapore is on a Tuesday when prices can be found for as low as $1,166. The most expensive day to fly to Singapore is Friday, with ticket prices averaging around $1,365.

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 $1,148. 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 $1,434 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 $1,115 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 $977 on momondo.

Can stopping save me money on Illinois to Singapore flights?

You could potentially save up to 63% 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

Best Price Found	$355
Fastest flight time	22h 25m
Direct flights	None
Airports in Singapore	1 airport

The best one-way flight to Singapore from Illinois in the past 72 hours is $355. The best round-trip flight deal from Illinois to Singapore found on momondo in the last 72 hours is $721.

The fastest flight from Illinois to Singapore takes 22h 25m

There are no direct flights from Illinois to Singapore. Popular non-direct routes for this connection are Chicago O'Hare Intl Airport - Singapore Changi Airport and Lambert-St Louis Airport - Singapore Changi Airport.

There is 1 airport near Singapore: Singapore Changi (SIN)

Search flight deals

When did momondo last update prices for flights from Illinois to Singapore Changi Airport?
Prices for flights from Illinois to Singapore Changi Airport refresh daily.
How many operators does momondo search for flights from Illinois to Singapore Changi Airport?
As of August 2025, there are 10 operators available to choose from for flights from Illinois to Singapore Changi Airport.
How old do you have to be to fly from Illinois to Singapore Changi Airport?
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 Changi Airport.
What documentation or ID do you need to fly to Singapore Changi Airport?
The required travel and health documents for your Singapore Changi Airport 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 Changi Airport. 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
Cathay Pacific	PriceFrom $717	Free Cancellation	Rating 7.6 969 reviews	Search Cathay Pacific flights
Turkish Airlines	PriceFrom $729	Free Cancellation	Rating 7.3 3,945 reviews	Search Turkish Airlines flights
Japan Airlines	PriceFrom $783	Free Cancellation	Rating 8.3 1,549 reviews	Search Japan Airlines flights
United Airlines	PriceFrom $840	Free Cancellation	Rating 7.4 8,925 reviews	Search United Airlines flights
Qatar Airways	PriceFrom $850	Free Cancellation	Rating 7.4 3,609 reviews	Search Qatar Airways flights
Air Canada	PriceFrom $872	Free Cancellation	Rating 7.1 9,992 reviews	Search Air Canada flights
Korean Air	PriceFrom $940	Free Cancellation	Rating 8.4 1,131 reviews	Search Korean Air flights
EVA Air	PriceFrom $1,080	Free Cancellation	Rating 8.4 1,232 reviews	Search EVA Air flights
ANA	PriceFrom $1,089	Free Cancellation	Rating 8.4 934 reviews	Search ANA flights
Finnair	PriceFrom $1,203	Free Cancellation	Rating 7.6 1,320 reviews	Search Finnair flights

Why use momondo?

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

Finding the right flight to Singapore from Illinois is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Singapore quick and easy, saving you time and money.

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 in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Singapore from Illinois.

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

Yes. momondo can track prices for Illinois to Singapore flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Singapore trip

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Cheap flights from Illinois to Singapore from $355

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 9/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Big names and deals

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Filter for what you want

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Find the cheapest flights from Illinois to Singapore

Cheap round-trip flights

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United Airlines flights from Illinois to Singapore

Our best United Airlines deals on Illinois to Singapore flight tickets

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Our best ANA deals on Illinois to Singapore flight tickets

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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

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 Tuesday when prices can be found for as low as $1,166. The most expensive day to fly to Singapore is Friday, with ticket prices averaging around $1,365.

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 63% on your flight if you consider stops on a Illinois to Singapore flight.

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

Cathay Pacific, Air Canada, and IndiGo are the most popular carriers operating from Illinois to Singapore Changi

What airlines fly to Singapore?

How long does it take to fly 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

Best Price Found

Fastest flight time

Direct flights

Airports in Singapore

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

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

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

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

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

Fly your favorite airline to Singapore

Airlines are sorted and displayed according to clicks in the past 7 days on momondo