S$ 66+ Cheap flights from Illinois

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 25-12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
ORD — SIN
27 Nov — 4 Dec1
1 adult
1 adult, Economy, 0 bags

What to know about flights from Illinois

Discover essential information about flights departing from Illinois, including flight schedules, destinations, airlines operating at the Illinois airport, and any specific guidelines or requirements for travellers. Please note that the information is based on the most recent updates available. Data last updated 28 October 2025.

Good round-trip deal

S$ 362 or less

Good one-way deal

S$ 56 or less
Price to beat on a round-trip flight from Illinois.
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Price to beat on a one-way flight from Illinois.
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Find flights from Illinois

Enter your travel dates to find the best prices.

Cheapest flights from Illinois
Explore the most affordable flight options available from Illinois. Find the lowest fares based on data from user searches, with prices last updated on 28 October 2025.

Mon 8-1218:07ORD - GRR
Nonstop1h 06mUnited Airlines
Wed 10-1207:30GRR - ORD
Nonstop1h 12mUnited Airlines
Deal found 27-10S$ 178
Thu 4-1208:55ORD - GRR
1 stop3h 24mDelta
Mon 8-1213:59GRR - ORD
1 stop5h 28mDelta
Deal found 27-10S$ 204
Thu 11-1210:35ORD - GRR
Nonstop1h 09mUnited Airlines
Thu 18-1209:30GRR - ORD
Nonstop1h 19mUnited Airlines
Deal found 27-10S$ 255
Mon 24-1112:45ORD - GRR
Nonstop1h 06mUnited Airlines
Mon 1-1216:55GRR - ORD
Nonstop1h 12mUnited Airlines
Deal found 26-10S$ 257
Tue 11-1111:19ORD - PWM
2 stops11h 35mDelta
Sat 15-1106:00PWM - ORD
1 stop7h 04mDelta
Deal found 25-10S$ 316
Tue 6-107:10ORD - PWM
1 stop5h 46mUnited Airlines
Sat 10-116:10PWM - ORD
Nonstop3h 08mUnited Airlines
Deal found 26-10S$ 318
Wed 12-1116:20ORD - PWM
1 stop5h 57mUnited Airlines
Sun 16-1119:22PWM - ORD
1 stop5h 21mUnited Airlines
Deal found 27-10S$ 323
Wed 12-1106:00ORD - PWM
2 stops9h 07mDelta
Sat 15-1113:25PWM - ORD
1 stop6h 26mDelta
Deal found 28-10S$ 329
Fri 16-116:25ORD - PWM
1 stop6h 05mUnited Airlines
Sun 18-106:00PWM - ORD
1 stop5h 53mUnited Airlines
Deal found 26-10S$ 331
Sun 15-211:48ORD - PWM
Nonstop2h 26mUnited Airlines
Thu 19-205:45PWM - ORD
Nonstop3h 12mUnited Airlines
Deal found 26-10S$ 333
Wed 12-1110:46ORD - PWM
2 stops10h 33mDelta
Mon 17-1116:40PWM - ORD
2 stops8h 22mDelta
Deal found 27-10S$ 336
Fri 7-1105:20ORD - PWM
1 stop6h 02mDelta
Mon 17-1116:40PWM - ORD
1 stop5h 04mDelta
Deal found 27-10S$ 349

Find flights from Illinois within your budget

 
Find flights departing from Illinois that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 28 October 2025. In the last 7 days, Cheapflights users made a total of 200,618 searches

Fly to

Singapore

Route

Depart

Return

Price

ChicagoGrand Rapids

ORD - GRR

ORDGRR

Chicago O'Hare Intl

Mon 8-12

18:07-20:13

Nonstop1h 06m

Grand Rapids Gerald R. Ford Intl

Wed 10-12

07:30-07:42

Nonstop1h 12m

S$ 178

ChicagoGrand Rapids

ORD - GRR

ORDGRR

Chicago O'Hare Intl

Mon 8-12

19:12-23:54

1 stop3h 42m

Grand Rapids Gerald R. Ford Intl

Wed 10-12

05:30-10:00

1 stop5h 30m

S$ 204

ChicagoGrand Rapids

ORD - GRR

ORDGRR

Chicago O'Hare Intl

Thu 4-12

08:55-14:57

1 stop5h 02m

Grand Rapids Gerald R. Ford Intl

Mon 8-12

15:37-18:27

1 stop3h 50m

S$ 204

ChicagoGrand Rapids

ORD - GRR

ORDGRR

Chicago O'Hare Intl

Thu 11-12

21:25-23:29

Nonstop1h 04m

Grand Rapids Gerald R. Ford Intl

Thu 18-12

09:30-09:49

Nonstop1h 19m

S$ 255

ChicagoGrand Rapids

ORD - GRR

ORDGRR

Chicago O'Hare Intl

Mon 24-11

12:45-14:51

Nonstop1h 06m

Grand Rapids Gerald R. Ford Intl

Mon 1-12

16:55-17:07

Nonstop1h 12m

S$ 257

ChicagoGrand Rapids

ORD - GRR

ORDGRR

Chicago O'Hare Intl

Mon 24-11

18:12-20:18

Nonstop1h 06m

Grand Rapids Gerald R. Ford Intl

Sun 30-11

11:47-12:05

Nonstop1h 18m

S$ 257

ChicagoPortland

ORD - PWM

ORDPWM

Chicago O'Hare Intl

Fri 16-1

16:25-23:30

1 stop6h 05m

Portland

Sun 18-1

16:10-18:18

Nonstop3h 08m

S$ 318

ChicagoPortland

ORD - PWM

ORDPWM

Chicago O'Hare Intl

Tue 6-1

07:10-13:56

1 stop5h 46m

Portland

Sat 10-1

16:10-18:18

Nonstop3h 08m

S$ 318

ChicagoPortland

ORD - PWM

ORDPWM

Chicago O'Hare Intl

Sun 9-11

05:23-12:30

1 stop6h 07m

Portland

Sat 15-11

14:30-21:27

1 stop7h 57m

S$ 323

ChicagoPortland

ORD - PWM

ORDPWM

Chicago O'Hare Intl

Wed 11-3

07:30-13:51

1 stop5h 21m

Portland

Thu 19-3

16:50-20:38

1 stop4h 48m

S$ 323

Flights are sorted by cheapest return flights first.

Deals found on 28-10

Showing 1-10 of 60 results
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Best time to book a flight from Illinois

Have a flexible travel schedule? Discover the best time to fly from Illinois with our price prediction graph.
Estimated return 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.

Travel insights for flights from Illinois

Get recent, data-driven insights about flights from Illinois including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Illinois?

Currently, September is the cheapest month in which you can book a flight from Illinois (average of S$ 857). Flying from Illinois in June will prove the most costly (average of S$ 1,555). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

Which airlines fly from Illinois?

When flying from Illinois check dates and pricing for the following: United Airlines. As it departs for the following popular destinations: Singapore.

United Airlines
United Airlines
From S$ 925

What is the cheapest place to fly to from Illinois?

The cheapest city to fly to from Illinois is Las Vegas Harry Reid Intl, with prices starting at S$ 54. Explore other affordable destinations below.

Las Vegas Harry Reid Intl
Las Vegas Harry Reid Intl
From S$ 54
Pittsburgh
Pittsburgh
From S$ 60
Raleigh-Durham
Raleigh-Durham
From S$ 362
Atlanta Hartsfield-Jackson
Atlanta Hartsfield-Jackson
From S$ 530

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Related info for your journey

Access useful and relevant information related to your journey from Illinois. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 28 October 2025.

  • What is the cheapest month to fly from Illinois?

    Currently, the cheapest month for flights from Illinois is September. The most expensive month for flights is June. The cheapest prices are shown above but prices will vary according to departure times, airlines, class and how early you book.

  • Where are the cheapest places to fly to from Illinois?

    View the cheapest flight destinations from Illinois:
    Fly from Chicago to Singapore from S$ 839 round trip

  • How does Cheapflights help users find flights from Illinois?

    When you search for this flight from Illinois, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the best flight for you.

  • Why should you use Cheapflights to find cheap flight tickets from Illinois?

    By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights from Illinois.

  • Can Cheapflights find flights from Illinois with no change fees?

    Yes! Cheapflights helps users easily find flights from Illinois with no change fees.

  • Can Cheapflights notify me if prices for flights from Illinois become cheaper?

    Yes! Start tracking prices for flights from Illinois today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive the alerts.

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How does Cheapflights help users find flights from Illinois?

When you search for this flight from Illinois, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the best flight for you.

Why should you use Cheapflights to find cheap flight tickets from Illinois?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights from Illinois.

Can Cheapflights find flights from Illinois with no change fees?

Yes! Cheapflights helps users easily find flights from Illinois with no change fees.

Can Cheapflights notify me if prices for flights from Illinois become cheaper?

Yes! Start tracking prices for flights from Illinois today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive the alerts.

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