$107 Find Cheap Flights from Illinois to Idaho - 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 Illinois to Idaho.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Illinois to Idaho 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 Illinois to Idaho 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 Illinois to Idaho up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Illinois and Idaho are connected by different airlines. The airlines that fly that route the most regularly are United Airlines (25 flights per week), Air Canada (18 flights per week), and American Airlines (14 flights per week).

There are 6 airports in Idaho. The busiest airport is Boise Airport (BOI), with 78% of all flights arriving there.

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Idaho is Idaho Falls Fanning Field Airport (IDA), with an average flight price of $291.

Based on KAYAK data, the cheapest day to fly to Idaho is Wednesday where round-trip tickets can be as cheap as $345. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $587 on average.

The cheapest time of day to fly to Idaho is generally in the morning, when round-trip flights cost $397 on average. Morning departures are around 10% cheaper than evening flights, on average. The most expensive time of day to fly to Idaho is generally at night, which is peak travel time and where the average cost of a ticket is $564.

The cheapest ticket to Idaho from Illinois found in the last 5 days was to Boise, at $296 round-trip. The most popular route is Chicago Midway Airport (MDW) to Boise (BOI) and the cheapest round-trip airline ticket found on this route in the last 5 days was $296.

The cheapest month for flights from Illinois to Idaho is August, when tickets cost $57 (return) on average. On the other hand, the most expensive months are April and December, when the average cost of round-trip tickets is $191 and $156 respectively.

To get a below average price on the flight from Illinois to Idaho, you should book around 7 weeks before departure, which saves you about 33% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

From Illinois, there are direct flights to Idaho from 1 city. This city is Chicago and there are 77 direct flights each week.

There are around 11 direct flights from within Illinois to Idaho every day. Most flights (47%) depart in the morning.

Each week there are around 77 direct flights from within Illinois to Idaho. The most common day for departures is Monday, with 16% of flights taking off on this day.

An average nonstop flight from Illinois to Idaho takes 8h 31m, covering a distance of 1307 miles. The shortest route is Chicago O'Hare Intl Airport (ORD) to Jackson (JAC) with an average flight time of 3h 18m.

Each week, there are 28 medium-haul flights (3-6 hour flight duration) and 49 short-haul flights (up to 3 hour flight duration) to Idaho. There aren't any long-haul flights (6-12 hour flight duration).

Based on KAYAK flight searches, the most popular destination is Jackson (40% of total searches to Idaho). The next most popular destinations are Boise (24%) and Spokane (22%). Searches for flights to Idaho Falls (7%), to Hailey (4%) and to West Yellowstone (1%) are also popular.