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$202+ 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 18/8. 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 — AKL
26 Jun — 3 Jul1
1 adult
1 adult, Economy, 0 bags

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 27 May 2026. In the last 7 days, Cheapflights users made a total of 134,765 searches

Fly to

Route

Departure

Return

Price

Cheapest return flight

ChicagoSan Juan

ORD - SJU

ORDSJU

Chicago O'Hare Intl

Wed 19/8

10:33-22:29

1 stop10h 56m

San Juan Luis Munoz Marin Intl

Wed 2/9

17:49-00:02

1 stop7h 13m

$404

MolinePhiladelphia

MLI - PHL

MLIPHL

Moline Quad-City

Fri 3/7

11:08-18:37

1 stop6h 29m

Philadelphia

Wed 8/7

17:09-22:31

1 stop6h 22m

$447

ChicagoSan Juan

ORD - SJU

ORDSJU

Chicago O'Hare Intl

Mon 17/8

05:28-16:38

1 stop10h 10m

San Juan Luis Munoz Marin Intl

Wed 19/8

12:56-20:50

1 stop8h 54m

$472

ChicagoSan Juan

ORD - SJU

ORDSJU

Chicago O'Hare Intl

Sun 16/8

06:00-16:33

1 stop9h 33m

San Juan Luis Munoz Marin Intl

Sat 29/8

06:48-16:54

1 stop11h 06m

$472

MolinePhiladelphia

MLI - PHL

MLIPHL

Moline Quad-City

Sat 18/7

17:10-00:59

1 stop6h 49m

Philadelphia

Mon 20/7

06:25-10:12

1 stop4h 47m

$488

ChicagoSan Juan

ORD - SJU

ORDSJU

Chicago O'Hare Intl

Sun 16/8

06:40-16:38

1 stop8h 58m

San Juan Luis Munoz Marin Intl

Wed 19/8

17:49-00:02

1 stop7h 13m

$524

ChicagoSan Juan

ORD - SJU

ORDSJU

Chicago O'Hare Intl

Fri 4/9

11:23-22:29

1 stop10h 06m

San Juan Luis Munoz Marin Intl

Tue 8/9

07:30-16:45

1 stop10h 15m

$524

MolinePhiladelphia

MLI - PHL

MLIPHL

Moline Quad-City

Thu 9/7

05:56-13:24

1 stop6h 28m

Philadelphia

Sun 12/7

05:15-10:12

1 stop5h 57m

$529

MolinePhiladelphia

MLI - PHL

MLIPHL

Moline Quad-City

Thu 17/9

06:00-14:45

1 stop7h 45m

Philadelphia

Thu 24/9

06:20-10:23

1 stop5h 03m

$529

MolinePhiladelphia

MLI - PHL

MLIPHL

Moline Quad-City

Fri 25/9

17:10-00:56

1 stop6h 46m

Philadelphia

Mon 28/9

15:54-22:24

1 stop7h 30m

$529

Flights are sorted by cheapest return flights first.

Deals found on 26/5

Showing 1-10 of 60 resultsSorted by cheapest first
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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, May is the cheapest month in which you can book a flight from Illinois (average of $243). Flying from Illinois in September will prove the most costly (average of $2,199). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

What is the cheapest place to fly to from Illinois?

The cheapest city to fly to from Illinois is Houston Hobby, with prices starting at $64. Explore other affordable destinations below.

Houston Hobby
Houston Hobby
From $64
Toronto
Toronto
From $190
Kastrup Copenhagen
Kastrup Copenhagen
From $652

When is the best time to book a flight from Illinois?

To ensure you get the cheapest price possible for a flight from Illinois, you should look to book at least 74 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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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 27 May 2026.

  • What is the cheapest month to fly from Illinois?

    At the present moment the cheapest month to fly from Illinois is currently May; with September being the most expensive. Prices will vary depending on multiple factors such as booking in advance, airline and departure airports and times.

  • How does Cheapflights help users find flights from Illinois?

    Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Illinois. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

    It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Illinois.

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

    Cheapflights does show flights with no change fees to all users. To see these options for flights from Illinois, users can toggle the no change fees filter when performing a flight search.

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

    Not ready to book yet? You can track prices for flights from Illinois on Cheapflights with our Price Alerts feature and get notified when better prices are available.

See more FAQs

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Illinois?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Illinois. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Illinois.

Can Cheapflights find flights from Illinois with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Illinois, users can toggle the no change fees filter when performing a flight search.

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

Not ready to book yet? You can track prices for flights from Illinois on Cheapflights with our Price Alerts feature and get notified when better prices are available.

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