Cheap flights from Illinois to Casper from $413
This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Casper departing on 5/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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United Airlines flights from Illinois to Casper
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How to get the cheapest flight ticket from Illinois to Casper
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest day to depart on your flight to Casper?
The cheapest day to depart from Illinois to Casper is on a Friday when prices can be found for as low as $391. The most expensive day to fly to Casper is Sunday, with ticket prices averaging around $702.
What is the cheapest time of day to depart on your flight to Casper?
The cheapest time of day to fly to Casper is in the afternoon when flights can be purchased for as low as $390. Flights to Casper are more costly at noon, with an average ticket price of $563. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.
Cheap Illinois to Casper flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Illinois to Casper
When did momondo last update prices for flights from Illinois to Casper Natrona County Airport?
Prices for flights from Illinois to Casper Natrona County Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Illinois to Casper Natrona County Airport?
As of April 2025, there is 1 operator available to choose from for flights from Illinois to Casper Natrona County Airport.
How old do you have to be to fly from Illinois to Casper Natrona County Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Illinois to Casper Natrona County Airport.
What documentation or ID do you need to fly to Casper Natrona County Airport?
The travel and health documents you'll need for your trip to Casper Natrona County Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Casper Natrona County Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
Best airlines flying from Illinois to Casper
Compare and see reviews for airlines that fly from Illinois to Casper with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $259 | Free Cancellation | Rating 7.4 8,667 reviews |
Traveling to a place near Casper?
Book flights to Casper if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Illinois to Casper?
It is quick and easy to find Illinois to Casper flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Casper that suits you.
Can I find flights from Illinois to Casper with flexible booking policies on momondo?
momondo does allow users to show only those flights to Casper from Illinois which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Illinois to Casper?
Once you have performed a search for Illinois to Casper flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Illinois to Casper right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Illinois to Casper now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Casper and let you know when they change.