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$361+ 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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SIN
mar. 18 — mar. 251
mié. 3/18
mié. 3/25
1 adult, Economy
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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 febrero 16, 2026.

This United Airlines deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 4/127:40 am
ORD
-
SIN
1 stop45h 55m
United Airlines
dom. 4/198:35 pm
SIN
-
ORD
1 stop29h 25m
United Airlines
Deal found 2/15$849
This Gurufare deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 5/178:40 am
ORD
-
SIN
1 stop33h 05m
ANA
jue. 5/218:45 am
SIN
-
ORD
1 stop24h 39m
ANA
Deal found 2/16$851
This Delta deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/27:20 am
ORD
-
SIN
2 stops31h 40m
Delta
vie. 11/2010:30 pm
SIN
-
ORD
2 stops39h 20m
Delta
Deal found 2/16$855
This oojo deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/11:10 pm
ORD
-
SIN
1 stop31h 10m
Air India
sáb. 5/911:00 pm
SIN
-
ORD
2 stops49h 10m
Air India
Deal found 2/13$858
This FlightHub deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/3111:25 am
ORD
-
SIN
1 stop41h 30m
Turkish Airlines
lun. 4/1311:10 am
SIN
-
ORD
1 stop35h 30m
Turkish Airlines
Deal found 2/15$863
This United Airlines deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/19:15 pm
ORD
-
SIN
1 stop33h 00m
United Airlines
mié. 12/1610:20 pm
SIN
-
ORD
1 stop27h 27m
United Airlines
Deal found 2/16$866
This United Airlines deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/94:00 pm
ORD
-
SIN
2 stops26h 00m
United Airlines
jue. 3/1210:20 pm
SIN
-
ORD
1 stop20h 59m
United Airlines
Deal found 2/12$870
This ScholarTrip deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure ScholarTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/64:15 pm
ORD
-
SIN
1 stop24h 15m
Cathay Pacific
vie. 4/1712:45 pm
SIN
-
ORD
1 stop38h 10m
Cathay Pacific
Deal found 2/16$873
This Justfly.com deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/162:30 pm
ORD
-
SIN
1 stop42h 15m
Air India
jue. 3/268:00 pm
SIN
-
ORD
2 stops29h 30m
Air India
Deal found 2/14$874
This Justfly.com deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/51:10 pm
ORD
-
SIN
1 stop29h 15m
Air India
lun. 10/1911:00 pm
SIN
-
ORD
2 stops49h 10m
Air India
Deal found 2/16$875
This United Airlines deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/166:20 pm
ORD
-
SIN
1 stop35h 15m
United Airlines
dom. 5/318:35 pm
SIN
-
ORD
1 stop23h 41m
United Airlines
Deal found 2/16$879
This Delta deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/236:00 am
MDW
-
SIN
2 stops28h 10m
Delta
mié. 12/91:35 am
SIN
-
MDW
2 stops34h 10m
Delta
Deal found 2/13$955

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 febrero 16, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$849
(United Airlines)

One-way from

$361
(oojo)

Popular in

December

Cheapest in

September

Average price

$874
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. 13% potential increase in price ($177 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 February 2026
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated febrero 16, 2026.
Use the filters below to find and compare flights from Illinois to Singapore that are best for you.

Fly from

Illinois

Fly to

Singapore

Route

Depart

Return

Price

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

mié. 4/1

6:25 am-6:35 pm

1 stop23h 10m

Singapore Changi

lun. 4/6

9:00 am-1:28 am

1 stop29h 28m

$866

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

lun. 3/9

4:00 pm-7:00 am

2 stops26h 00m

Singapore Changi

jue. 3/12

10:20 pm-6:19 am

1 stop20h 59m

$870

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

mar. 3/31

2:05 pm-6:45 am

2 stops27h 40m

Singapore Changi

lun. 4/13

9:00 am-12:59 am

2 stops28h 59m

$870

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

sáb. 5/16

7:43 pm-6:35 pm

1 stop33h 52m

Singapore Changi

dom. 5/31

8:35 pm-11:31 am

1 stop27h 56m

$882

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

dom. 5/17

6:20 am-6:35 pm

1 stop23h 15m

Singapore Changi

sáb. 5/30

8:35 pm-7:16 am

1 stop23h 41m

$891

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

dom. 5/10

6:20 am-6:35 pm

1 stop23h 15m

Singapore Changi

dom. 5/24

8:35 pm-7:16 am

1 stop23h 41m

$891

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

dom. 5/17

6:20 am-6:35 pm

1 stop23h 15m

Singapore Changi

dom. 5/31

8:35 pm-11:31 am

1 stop27h 56m

$891

ChicagoSingapore

ORD - SIN

ORDSIN

Chicago O'Hare Intl

sáb. 5/9

6:20 pm-6:45 am

1 stop23h 25m

Singapore Changi

sáb. 5/23

8:45 am-9:40 pm

2 stops25h 55m

$895

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

mar. 3/3

4:30 pm-8:00 am

2 stops25h 30m

Singapore Changi

mié. 3/11

10:10 am-10:25 pm

1 stop25h 15m

$1,177

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

mar. 3/31

12:05 pm-8:50 am

2 stops31h 45m

Singapore Changi

mar. 4/7

7:40 pm-7:33 pm

2 stops36h 53m

$1,179

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/15

Showing 1-10 of 60 results
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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

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?

    Departing from Illinois to Singapore will take you 27h 40m. The distance between Illinois and Singapore is about 9345 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 $370 on Cathay Pacific. Other airlines that offer cheap prices include Turkish Airlines from $444 and United Airlines from $446 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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Alternative routes for Illinois to Singapore

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Illinois to Singapore

Discover the top 10 airlines that operate flights from Illinois to Singapore. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated febrero 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air IndiaCheapest$675Average$925FlexibilityNo cancel feeOn-timeN/A
ANACheapest$698Average$1,426FlexibilityNo cancel feeOn-time80%
Cathay PacificCheapest$698Average$885FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$709Average$1,196FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$799Average$1,105FlexibilityNo cancel feeOn-time77%
Etihad AirwaysCheapest$830Average$1,058FlexibilityNo cancel feeOn-time75%
Korean AirCheapest$858Average$1,203FlexibilityNo cancel feeOn-time81%
Air CanadaCheapest$872Average$1,340FlexibilityNo cancel feeOn-time67%
Japan AirlinesCheapest$988Average$1,081FlexibilityNo cancel feeOn-time79%
EVA AirCheapest$1,086Average$1,389FlexibilityNo cancel feeOn-time74%

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