$273 Find Cheap Flights from Casper to Illinois

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Casper to Illinois departing on 5/29. 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.
1 adult
1 adult, Economy, 0 bags

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Casper to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Casper to Illinois, as well as popular online travel agencies
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Flight Deals

Book Cheap Casper to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Casper to Illinois that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Casper to Illinois

Fri, May 29 - Mon, Jun 1
United Airlines Logo
6:13 pm - 11:57 pm
CPR
-
STL
4h 44m
1 stop
United Airlines Logo
5:10 am - 8:51 am
STL
-
CPR
4h 41m
1 stop
$318United Airlines
Tue, Jul 7 - Sat, Jul 11
United Airlines Logo
6:13 pm - 12:44 am
CPR
-
ORD
5h 31m
1 stop
United Airlines Logo
5:00 am - 8:51 am
ORD
-
CPR
4h 51m
1 stop
$328United Airlines
Fri, Mar 27 - Tue, Mar 31
United Airlines Logo
5:55 pm - 11:52 pm
CPR
-
ORD
4h 57m
1 stop
United Airlines Logo
5:45 pm - 10:07 pm
ORD
-
CPR
5h 22m
1 stop
$338United Airlines
Wed, Aug 12 - Sat, Aug 15
United Airlines Logo
1:26 pm - 8:39 pm
CPR
-
STL
6h 13m
1 stop
United Airlines Logo
1:36 pm - 5:31 pm
STL
-
CPR
4h 55m
1 stop
$368United Airlines
Sat, Apr 25 - Tue, Apr 28
United Airlines Logo
5:25 am - 1:12 pm
CPR
-
ORD
6h 47m
1 stop
United Airlines Logo
12:55 pm - 5:09 pm
ORD
-
CPR
5h 14m
1 stop
$378United Airlines
Wed, Aug 12 - Sat, Aug 15
United Airlines Logo
1:26 pm - 8:39 pm
CPR
-
STL
6h 13m
1 stop
United Airlines Logo
1:36 pm - 5:31 pm
STL
-
CPR
4h 55m
1 stop
$388United Airlines
Sat, Apr 25 - Tue, Apr 28
United Airlines Logo
5:25 am - 2:52 pm
CPR
-
ORD
8h 27m
1 stop
United Airlines Logo
7:00 am - 12:46 pm
ORD
-
CPR
6h 46m
1 stop
$398United Airlines
Wed, Aug 12 - Sat, Aug 15
United Airlines Logo
8:45 am - 9:22 pm
CPR
-
STL
11h 37m
2 stops
United Airlines Logo
5:10 am - 8:50 am
STL
-
CPR
4h 40m
1 stop
$404United Airlines
Wed, Aug 12 - Sat, Aug 15
United Airlines Logo
8:45 am - 9:22 pm
CPR
-
STL
11h 37m
2 stops
United Airlines Logo
5:10 am - 8:50 am
STL
-
CPR
4h 40m
1 stop
$424United Airlines
Fri, May 29 - Mon, Jun 1
United Airlines Logo
11:21 am - 9:16 pm
CPR
-
STL
8h 55m
2 stops
United Airlines Logo
5:10 am - 8:51 am
STL
-
CPR
4h 41m
1 stop
$451United 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 8h 00m.

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Good to know

Cheapest flight$273
Flight from Casper to St. Louis

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

Casper (CPR)