How does KAYAK find such low prices on flights from Casper to Illinois?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Casper to Illinois. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Casper to Illinois?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Casper to Illinois is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Casper to Illinois?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Casper to Illinois with an airline and back with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Casper to Illinois?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Casper to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$368 CHEAP FLIGHTS from Casper to Illinois

KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

...and more

Travelers love KAYAK

41 299 237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals

Book Cheap Casper to Illinois Plane Tickets

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

Last minute

Recent round-trip flight deals from Casper to Illinois

Sat, Feb 7 - Tue, Feb 10

11:28 am - 8:58 pm

CPR

STL

8h 30m

1 stop

4:15 pm - 8:40 pm

STL

CPR

5h 25m

1 stop

$368United Airlines

Sat, Feb 7 - Tue, Feb 10

11:28 am - 8:58 pm

CPR

STL

8h 30m

1 stop

9:57 am - 8:40 pm

STL

CPR

11h 43m

2 stops

$374United Airlines

Sat, Feb 7 - Tue, Feb 10

5:30 am - 2:28 pm

CPR

STL

7h 58m

2 stops

9:57 am - 8:40 pm

STL

CPR

11h 43m

2 stops

$379United Airlines

Thu, Feb 12 - Mon, Feb 16

5:25 am - 11:19 am

CPR

ORD

4h 54m

1 stop

2:02 pm - 8:26 pm

ORD

CPR

7h 24m

1 stop

$394United Airlines

Thu, Feb 12 - Mon, Feb 16

1:20 pm - 11:59 pm

CPR

ORD

9h 39m

1 stop

10:50 am - 10:09 pm

ORD

CPR

12h 19m

2 stops

$533United Airlines

Mon, Mar 23 - Fri, Mar 27

3:15 pm - 11:53 pm

CPR

ORD

7h 38m

1 stop

12:50 pm - 6:57 pm

ORD

CPR

7h 07m

1 stop

$620United Airlines

Fri, Mar 27 - Sun, Mar 29

11:26 am - 8:41 pm

CPR

STL

8h 15m

1 stop

6:05 pm - 8:26 pm

STL

CPR

27h 21m

1 stop

$677United Airlines

Fri, Mar 27 - Sun, Mar 29

7:00 am - 10:59 pm

CPR

STL

14h 59m

2 stops

6:05 pm - 8:26 pm

STL

CPR

27h 21m

1 stop

$746United Airlines

Booking Insights

KAYAK's insights & trends for Casper to Illinois flights

Get data-powered insights and trends into flights from Casper to Illinois to help you find the cheapest flights, the best time to fly and much more.

How long does a flight from Casper to Illinois take?

The duration of a flight to Illinois depends on your arrival airport. The shortest route to Illinois from Casper is to Chicago, which takes 7h 58m.

Find deals

Cheapest flight	$368

Flight from Casper to St. Louis

How does KAYAK find such low prices on flights from Casper to Illinois?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Casper to Illinois.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Casper to Illinois?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Casper to Illinois is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Casper to Illinois?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Casper to Illinois with an airline and back with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Casper to Illinois?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Casper to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Casper to Illinois

Airports

Cabin class

Complete your trip

Flights to other cities

Origins

Popular routes

Return flight deals

Information on your arrival and departure airports

Casper (CPR)

$298 Find Cheap Flights from Casper to Illinois

KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

Book Cheap Casper to Illinois Plane Tickets

Recent round-trip flight deals from Casper to Illinois

Recent last minute flight deals from Casper to Illinois

KAYAK's insights & trends for Casper to Illinois flights

Get data-powered insights and trends into flights from Casper to Illinois to help you find the cheapest flights, the best time to fly and much more.

How long does a flight from Casper to Illinois take?

The duration of a flight to Illinois depends on your arrival airport. The shortest route to Illinois from Casper is to Chicago, which takes 7h 58m.

Good to know

FAQs - booking Illinois flights

How does KAYAK find such low prices on flights from Casper to Illinois?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Casper to Illinois.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Casper to Illinois?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Casper to Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Casper to Illinois?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Casper to Illinois with an airline and back with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Casper to Illinois?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Casper to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Casper to Illinois

Information on your arrival and departure airports

Cabin class types available on flights to Illinois

Complete your trip to Illinois with a hotel stay or car rental

Flights to other popular destinations

Flights from other airports in Casper to Illinois

Flights from Casper to popular cities in Illinois

Find deals for your return flight