$89 Find Cheap Flights from North America to Illinois - Compare and Save

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 North America to Illinois.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from North America to Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

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 North America to Illinois with an airline and back with another airline.

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 North America to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

North America and Illinois are connected by different airlines. The airlines that fly that route the most regularly are United Airlines (5,024 flights per week), American Airlines (3,670 flights per week), and Air New Zealand (3,013 flights per week).

There are 12 airports in Illinois. The busiest airport is Chicago O'Hare Airport (ORD), with 92% of all flights arriving there.

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Illinois is Chicago Midway Airport (MDW), with an average flight price of $227.

Based on KAYAK data, the cheapest day to fly to Illinois is Wednesday where round-trip tickets can be as cheap as $403. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $494 on average.

The cheapest time of day to fly to Illinois is generally in the evening, when round-trip flights cost $347 on average. Morning departures are around 32% more expensive than evening flights, on average. The most expensive time of day to fly to Illinois is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $512.

The cheapest ticket to Illinois from North America found in the last 5 days was to Chicago Midway Airport, at $118 round-trip. The most popular route is Atlanta (ATL) to Chicago Midway Airport (MDW) and the cheapest round-trip airline ticket found on this route in the last 5 days was $118.

The cheapest month for flights from North America to Illinois is October, when tickets cost $172 (return) on average. On the other hand, the most expensive months are January and July, when the average cost of round-trip tickets is $233 and $225 respectively.

To get a below average price on the flight from North America to Illinois, you should book around 2 weeks before departure, which saves you about 31% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

From North America, there are direct flights to Illinois from 221 cities. The city with the most direct flights is New York, with 1,441 direct flights each week.

There are around 4,694 direct flights from within North America to Illinois every day. Most flights (48%) depart in the morning.

Each week there are around 32,853 direct flights from within North America to Illinois. The most common day for departures is Sunday, with 15% of flights taking off on this day.

An average nonstop flight from North America to Illinois takes 3h 02m, covering a distance of 1055 miles. The shortest route is Minneapolis (MSP) to Chicago O'Hare Intl Airport (ORD) with an average flight time of 1h 19m.

Each week there are around 16 long-haul flights (6-12 hour flight duration), 3,701 medium-haul (3-6 hour flight duration) and 29,443 short-haul (up to 3 hour flight duration) flights to Illinois. The most long-haul flights depart from Honolulu.

Based on KAYAK flight searches, the most popular destination is Chicago (97% of total searches to Illinois). The next most popular destination is St. Louis (3%).