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Cheap flights from Illinois to Singapore from $353

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 2/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Turkish Airlines Logo
11:50 am - 8:45 amORD-SIN
30h 55m1 stop
Turkish Airlines Logo
10:25 am - 10:05 amSIN-ORD
37h 40m1 stop
$898Turkish Airlines
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Sun, Nov 16 - Sat, Nov 22
American Airlines Logo
5:40 pm - 5:25 pmORD-SIN
33h 45m1 stop
American Airlines Logo
2:20 am - 7:35 amSIN-ORD
19h 15m1 stop
$899American Airlines
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Thu, Jan 15 - Fri, Jan 23
Air India Logo
2:30 pm - 9:45 pmORD-SIN
42h 15m1 stop
Air India Logo
11:00 pm - 12:30 pmSIN-ORD
50h 30m2 stops
$900Air India
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Sun, Mar 15 - Mon, Mar 23
Cathay Pacific Logo
2:35 pm - 11:55 amORD-SIN
31h 20m1 stop
Cathay Pacific Logo
1:25 am - 1:55 pmSIN-ORD
25h 30m1 stop
$901Cathay Pacific
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Mon, Mar 2 - Sun, Mar 15
Air Canada Logo
5:50 pm - 7:05 amORD-SIN
48h 15m2 stops
Air Canada Logo
9:10 am - 12:53 pmSIN-ORD
40h 43m1 stop
$909Air Canada
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Wed, Apr 1 - Tue, Apr 14
Air Canada Logo
12:50 pm - 7:00 amORD-SIN
28h 10m2 stops
Air Canada Logo
9:00 pm - 2:41 pmSIN-ORD
31h 41m2 stops
$910Air Canada
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Wed, Jan 21 - Mon, Feb 2
Cathay Pacific Logo
2:35 pm - 1:05 pmORD-SIN
32h 30m1 stop
Cathay Pacific Logo
1:25 am - 12:55 pmSIN-ORD
25h 30m1 stop
$915Cathay Pacific
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Wed, Jan 14 - Fri, Jan 30
Air India Logo
1:30 pm - 7:00 amORD-SIN
27h 30m1 stop
Air India Logo
8:00 pm - 11:30 amSIN-ORD
29h 30m2 stops
$918Air India
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Mon, Jan 5 - Sat, Mar 7
IndiGo Logo
8:20 pm - 10:15 amORD-SIN
47h 55m2 stops
IndiGo Logo
11:15 am - 6:25 pmSIN-ORD
45h 10m2 stops
$943IndiGo
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Wed, Jan 14 - Sat, Jan 31
IndiGo Logo
11:50 am - 5:20 pmORD-SIN
39h 30m2 stops
IndiGo Logo
7:40 pm - 6:25 pmSIN-ORD
36h 45m2 stops
$961IndiGo
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Wed, Dec 3 - Tue, Feb 17

IndiGo flights from Illinois to Singapore

Our best IndiGo deals on Illinois to Singapore flight tickets
IndiGo
Jan 14
ORD8:20 pmChicago O'Hare Intl
47h 55m
2 stops
SIN10:15 amSingapore Changi
Jan 31
SIN11:15 amSingapore Changi
45h 10m
2 stops
ORD6:25 pmChicago O'Hare Intl
$943
Find similar
IndiGo
Dec 3
ORD11:50 amChicago O'Hare Intl
39h 30m
2 stops
SIN5:20 pmSingapore Changi
Feb 17
SIN7:40 pmSingapore Changi
36h 45m
2 stops
ORD6:25 pmChicago O'Hare Intl
$961
Find similar
IndiGo
Nov 10
ORD11:50 amChicago O'Hare Intl
39h 30m
2 stops
SIN5:20 pmSingapore Changi
Nov 17
SIN7:40 pmSingapore Changi
36h 45m
2 stops
ORD6:25 pmChicago O'Hare Intl
$970
Find similar

United Airlines flights from Illinois to Singapore

Our best United Airlines deals on Illinois to Singapore flight tickets
United Airlines
Jan 16
STL6:00 pmLambert-St Louis
36h 15m
2 stops
SIN8:15 pmSingapore Changi
Jan 31
SIN10:20 pmSingapore Changi
20h 51m
1 stop
STL5:11 amLambert-St Louis
$1,229
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United Airlines
Nov 6
STL12:31 pmLambert-St Louis
29h 29m
2 stops
SIN8:00 amSingapore Changi
Nov 8
SIN10:20 pmSingapore Changi
26h 31m
2 stops
STL10:51 amLambert-St Louis
$1,370
Find similar
United Airlines
Mar 8
STL5:25 pmLambert-St Louis
25h 35m
1 stop
SIN8:00 amSingapore Changi
Mar 12
SIN10:10 amSingapore Changi
25h 39m
2 stops
STL10:49 pmLambert-St Louis
$1,524
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momondo 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, momondo users made 832,500 searches. Data last updated November 4, 2025.
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

Sun 11/16

11:50 am-8:45 am

1 stop30h 55m

Singapore Changi

Sat 11/22

10:25 am-10:05 am

1 stop37h 40m

$898

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Thu 1/15

5:40 pm-5:25 pm

1 stop33h 45m

Singapore Changi

Fri 1/23

2:20 am-7:35 am

1 stop19h 15m

$899

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Sun 3/15

2:30 pm-9:45 pm

1 stop42h 15m

Singapore Changi

Mon 3/23

11:00 pm-12:30 pm

2 stops50h 30m

$900

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Mon 3/2

2:35 pm-11:55 am

1 stop31h 20m

Singapore Changi

Sun 3/15

1:25 am-1:55 pm

1 stop25h 30m

$901

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Wed 4/1

5:50 pm-7:05 am

2 stops48h 15m

Singapore Changi

Tue 4/14

9:10 am-12:53 pm

1 stop40h 43m

$909

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Wed 1/21

12:50 pm-7:00 am

2 stops28h 10m

Singapore Changi

Mon 2/2

9:00 pm-2:41 pm

2 stops31h 41m

$910

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Wed 1/14

2:35 pm-1:05 pm

1 stop32h 30m

Singapore Changi

Fri 1/30

1:25 am-12:55 pm

1 stop25h 30m

$915

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Mon 1/5

1:30 pm-7:00 am

1 stop27h 30m

Singapore Changi

Sat 3/7

8:00 pm-11:30 am

2 stops29h 30m

$918

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Wed 1/14

8:20 pm-10:15 am

2 stops47h 55m

Singapore Changi

Sat 1/31

11:15 am-6:25 pm

2 stops45h 10m

$943

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

Wed 12/3

11:50 am-5:20 pm

2 stops39h 30m

Singapore Changi

Tue 2/17

7:40 pm-6:25 pm

2 stops36h 45m

$961

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Singapore from

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?

The month of February is, on average, the cheapest month to fly to Singapore from Illinois, with most prices found around $806. 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 $841.

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 $1,127 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 $1,027 on momondo.

Can stopping save me money on Illinois to Singapore flights?

You could potentially save up to 55% 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

Direct flights

None
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?

  • 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 IndiaPriceFrom $675Free CancellationRating
5.5
2,942 reviews
Search Air India flights
Cathay PacificPriceFrom $701Free CancellationRating
7.6
1,050 reviews
Search Cathay Pacific flights
United AirlinesPriceFrom $709Free CancellationRating
7.4
8,999 reviews
Search United Airlines flights
Turkish AirlinesPriceFrom $744Free CancellationRating
7.3
4,038 reviews
Search Turkish Airlines flights
Japan AirlinesPriceFrom $791Free CancellationRating
8.3
1,602 reviews
Search Japan Airlines flights
Qatar AirwaysPriceFrom $850Free CancellationRating
7.4
3,660 reviews
Search Qatar Airways flights
Air CanadaPriceFrom $884Free CancellationRating
7.1
10,400 reviews
Search Air Canada flights
Etihad AirwaysPriceFrom $909Free CancellationRating
7.4
1,285 reviews
Search Etihad Airways flights
Korean AirPriceFrom $940Free CancellationRating
8.4
1,160 reviews
Search Korean Air flights
ANAPriceFrom $1,024Free CancellationRating
8.4
1,000 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.

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