Cheap flights from North America to Illinois from $36
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from North America to Illinois departing on 9/15. 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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How to get the cheapest flight ticket from North America to Illinois
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 month to fly to Illinois?
The cheapest month to fly to Illinois from North America is in September. Flight prices, which tend to average around $177, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of September, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $180.
What is the cheapest day to depart on your flight to Illinois?
The cheapest day to depart from North America to Illinois is on a Wednesday when prices can be found for as low as $359. Flights from North America to Illinois on a Sunday will generally be more expensive and average around $468. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Illinois?
Our most recent data shows that the best time of day to fly to Illinois is in the afternoon. Flights from North America to Illinois during this time can be as low as $287. Flights at noon are often more expensive with an average ticket price of $443.
What is the cheapest North America to Illinois flight route?
Fly from Atlanta Hartsfield-Jackson to Chicago Midway for the best North America - Illinois flight prices
How far in advance should I book a flight to Illinois?
You are more likely to see cheaper flights to Illinois from North America when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $241 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from North America for as low as $200 on momondo.
What cabin class options are available on North America to Illinois flights?
There are 4 cabin classes available to choose from on North America to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from North America to Illinois?
Frontier and Spirit Airlines are the most popular carriers operating from North America to Illinois
What airlines fly to Illinois?
American Airlines, United Airlines and Frontier are the top three most popular airlines that fly to Illinois from North America according to our data. American Airlines is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 11 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.
How many flights depart from North America to Illinois on average per day?
As of July 2025, there are 319 flights per day flying from North America to Illinois. The most common time of day flights depart is 8:00AM, with 41% of flights taking off at noon.
How many flights depart from North America to Illinois on average per week?
2,233 flights are operational weekly from North America to Illinois as of July 2025. The most popular departure day for this route is Thu, with 29% of flights per week taking off on this day.
Cheap North America to Illinois flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from North America to Illinois
When did momondo last update prices for flights from North America to Illinois?
Prices for flights from North America to Illinois refresh daily.
How many operators does momondo search for flights from North America to Illinois?
There are 11 operators available for flights from North America to Illinois as of July 2025.
How old do you have to be to fly from North America to Illinois?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from North America to Illinois.
What documentation or ID do you need to fly 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.
What is the most popular plane model from North America to Illinois?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from North America to Illinois is Boeing 737-800 (21.05% of total bookings). The next most popular plane models are Airbus A321neo (10.50%), Boeing 737-900 (8.64%), and Boeing 737 MAX 8 (8.58%).
Best airlines flying from North America to Illinois
Compare and see reviews for airlines that fly from North America to Illinois with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $41 | Free Cancellation | Rating 6.3 8,094 reviews | |||
| PriceFrom $50 | Free Cancellation | Rating 5.9 3,284 reviews | |||
| PriceFrom $54 | Free Cancellation | Rating 7.2 709 reviews | |||
| PriceFrom $78 | Free Cancellation | Rating 7.3 2,916 reviews | |||
| PriceFrom $94 | Free Cancellation | Rating 8.0 7,983 reviews | |||
| PriceFrom $97 | Free Cancellation | Rating 7.4 8,861 reviews | |||
| PriceFrom $108 | Free Cancellation | Rating 7.8 2,545 reviews | |||
| PriceFrom $124 | Free Cancellation | Rating 8.0 4,270 reviews | |||
| PriceFrom $130 | Free Cancellation | Rating 6.9 339 reviews | |||
| PriceFrom $136 | Free Cancellation | Rating 7.2 10,000 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from North America to Illinois?
Finding the right flight to Illinois from North America is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Illinois quick and easy, saving you time and money.
Can I find flights from North America to Illinois with flexible booking policies on momondo?
Flights from North America 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.
How can momondo help me find flights from North America to Illinois?
Once all potential North America to Illinois flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from North America to Illinois right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Illinois, momondo offers a useful price alert feature which will track prices for flights to Illinois from North America and alert you when they change.