$248+ Cheap flights from Illinois to Casper (CPR)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Illinois to Casper with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Illinois to Casper
Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) to Casper (CPR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 21, 2025.
Round-trip from | $248 (United Airlines) |
|---|
Find flight deals from Illinois to Casper
Cheapest flights from Illinois to CasperExplore the most affordable flight options available from Illinois to Casper. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 21, 2025.
Explore the most affordable flight options available from Illinois to Casper. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 21, 2025.
This United Airlines deal was found by Cheapflights users on 1/21. 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.
This United Airlines deal was found by Cheapflights users on 1/19. 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.
Find flights from Illinois to Casper within your budget
Customize your flight search to find flights from Illinois to Casper 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 enero 21, 2025.
Fly from
Fly to
Route
Depart
Return
Price
St. LouisCasper
STL - CPR
STLCPR
Lambert-St Louis
mié. 2/12
8:27 am-12:52 pm
1 stop5h 25m
Casper Natrona County
dom. 2/16
5:15 am-3:40 pm
2 stops9h 25m
ChicagoCasper
ORD - CPR
ORDCPR
Chicago O'Hare Intl
mié. 2/12
4:20 pm-12:51 pm
2 stops21h 31m
Casper Natrona County
mar. 2/18
6:13 pm-11:20 am
1 stop16h 07m
ChicagoCasper
ORD - CPR
ORDCPR
Chicago O'Hare Intl
lun. 4/7
5:00 am-10:11 pm
1 stop18h 11m
Best time to book a flight from Illinois to Casper
Have a flexible travel schedule? Discover the best time to fly to Casper from Illinois with our price prediction graph.
Travel insights for flights from Illinois to Casper
Get recent, data-driven insights about flights from Illinois to Casper including ideal travel times, pricing trends, and more.
What is the cheapest time of day to fly from IL to CPR?
Find hourly flight availability from Illinois to Casper. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated enero 21, 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Casper as you normally would.
Rainfall in Casper by month
Plan your trip to Casper by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Casper ranges from 0.5 - 2.0 inches per month. May is typically the wettest month, when rainfall can reach 2.0 in. January is typically the driest time to visit Casper when rainfall is around 0.5 in.
Temperature in Casper by month
Plan your trip to Casper by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Casper, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 23.0 F).
Reviews of airlines servicing Casper
Get insights into the airlines that provide service to Casper. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Casper. Reviews last updated enero 21, 2025.
Food
Comfort
Crew
Boarding
Entertainment
Overall
Reviews
United Airlines flights seem to always use a bus to/from the boarding gate to the plane. Can they not get their own gate? This time there was no lift when leaving the plane and people in wheelchairs somehow had to climb down the steps to the ground to get to the bus. I udon’t know how some managed that!
Food
Comfort
Crew
Boarding
Entertainment
Overall
Reviews
United Airlines flights seem to always use a bus to/from the boarding gate to the plane. Can they not get their own gate? This time there was no lift when leaving the plane and people in wheelchairs somehow had to climb down the steps to the ground to get to the bus. I udon’t know how some managed that!
Related info for your journey
Find useful and relevant information for your journey from Illinois to Casper. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Illinois?
Book flights to Illinois if you plan to visit one of these locationsBrowse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes for Illinois to Casper
See prices for flight routes from nearby airports that may be better suited for you.
Top airline flying from Illinois to Casper
Discover the top airline that operate flights from Illinois to Casper. 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 enero 21, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$278 | Average$427 | FlexibilityNo cancel fee | On-time69% |