$202 Find Cheap Flights from O'ahu 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 O'ahu to Illinois.

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

There are 12 airports in Illinois. The busiest airport is Chicago O'Hare Airport (ORD), with 91% 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 O'Hare Intl Airport (ORD), with an average flight price of $459.

Based on KAYAK data, the cheapest day to fly to Illinois is Wednesday where round-trip tickets can be as cheap as $753. On the other hand, the most expensive day to fly is Saturday, where round-trip prices are $1,134 on average.

The cheapest time of day to fly to Illinois is generally in the evening, when round-trip flights cost $816 on average. The most expensive time of day to fly to Illinois is generally at night, which is peak travel time and where the average cost of a ticket is $832.

The cheapest ticket to Illinois from O'ahu found in the last 5 days was to Chicago O'Hare Intl Airport, at $610 round-trip. The most popular route is Honolulu (HNL) to Chicago O'Hare Intl Airport (ORD) and the cheapest round-trip airline ticket found on this route in the last 5 days was $610.

The cheapest month for flights from O'ahu to Illinois is February, when tickets cost $170 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $332 and $315 respectively.

To get a below average price on the flight from O'ahu to Illinois, you should book around 6 weeks before departure, which saves you about 16% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

From O'ahu, there are direct flights to Illinois from 1 city. This city is Honolulu and there are 14 direct flights each week.

There are around 2 direct flights from within O'ahu to Illinois every day. All flights depart in the afternoon.

Each week there are around 14 direct flights from within O'ahu to Illinois. The most common day for departures is Monday, with 14% of flights taking off on this day.

An average nonstop flight from O'ahu to Illinois takes 19h 21m, covering a distance of 4195 miles. The shortest route is Honolulu (HNL) to Chicago O'Hare Intl Airport (ORD) with an average flight time of 8h 04m.

There are not any medium-haul (3-6 hour flight duration) or short-haul (up to 3 hour flight duration) flights to Illinois. Instead, there are 14 long-haul flights (6-12 hour flight duration), with the most arriving from Honolulu.

Based on KAYAK flight searches, the most popular destination is Chicago (95% of total searches to Illinois). The next most popular destinations are St. Louis (3%) and Bloomington (1%). Searches for flights to Champaign (1%), to Moline (1%) and to Evansville (0%) are also popular.