Prices for flights from Colorado to Illinois are updated daily.
As of November 2024, there are 4 operators available to choose from for flights from Colorado to Illinois.
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Colorado to Illinois.
The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Colorado to Illinois is Airbus A320neo (11.75% of total bookings). The next most popular plane models are Airbus A321neo (10.42%), Boeing 737-900 (9.78%), and Boeing 757-300 (9.60%).
Airline | Rating | Free Cancellation | Price | ||
---|---|---|---|---|---|
Frontier | PriceFrom $38 | Free Cancellation | Rating 6.1 3,523 reviews | ||
Allegiant Air | PriceFrom $86 | Free Cancellation | Rating 7.3 843 reviews | ||
American Airlines | PriceFrom $139 | Free Cancellation | Rating 7.2 10,000 reviews | ||
United Airlines | PriceFrom $142 | Free Cancellation | Rating 7.4 9,146 reviews | ||
Southwest | PriceFrom $143 | Free Cancellation | Rating 8.1 4,979 reviews |
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Colorado to Illinois. Millions of users trust and use momondo every year so you are in good hands.
Flights from Colorado to Illinois with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Illinois from Colorado.
If you are not ready to book a flight from Colorado to Illinois now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Illinois and let you know when they change.