Find cheap flights from Delaware 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 Delaware to Illinois.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Delaware 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 Delaware 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 Delaware 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 92% of all flights arriving there.

The cheapest ticket to Illinois from Delaware found in the last 5 days was to Chicago O'Hare Intl Airport, at $320 round-trip. The most popular route is Wilmington (ILG) to Chicago O'Hare Intl Airport (ORD) and the cheapest round-trip airline ticket found on this route in the last 5 days was $320.

To get a below average price on the flight from Delaware to Illinois, you should book around 4 weeks before departure, which saves you about 32% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

An average nonstop flight from Delaware to Illinois takes 6h 55m, covering a distance of 724 miles. The shortest route is Philadelphia (PHL) to Chicago Midway Airport (MDW) with an average flight time of 2h 10m.