$67 Find Cheap Flights from District of Columbia 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 District of Columbia to Illinois.

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

District of Columbia and Illinois are connected by different airlines. The airlines that fly that route the most regularly are United Airlines (149 flights per week), Air New Zealand (134 flights per week), and American Airlines (107 flights per week).

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 Midway Airport (MDW), with an average flight price of $234.

Based on KAYAK data, the cheapest day to fly to Illinois is Thursday where round-trip tickets can be as cheap as $425. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $588 on average.

The cheapest time of day to fly to Illinois is generally at night, when round-trip flights cost $431 on average. Morning departures are around 8% cheaper than evening flights, on average. The most expensive time of day to fly to Illinois is generally in the evening, which is peak travel time and where the average cost of a ticket is $509.

The cheapest ticket to Illinois from District of Columbia found in the last 5 days was to Chicago Midway Airport, at $177 round-trip. The most popular route is Baltimore (BWI) to Chicago Midway Airport (MDW) and the cheapest round-trip airline ticket found on this route in the last 5 days was $177.

The cheapest month for flights from District of Columbia to Illinois is September, when tickets cost $136 (return) on average. On the other hand, the most expensive months are February and June, when the average cost of round-trip tickets is $243 and $241 respectively.

To get a below average price on the flight from District of Columbia to Illinois, you should book around 4 weeks before departure, which saves you about 52% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

From District of Columbia, there are direct flights to Illinois from 1 city. This city is Washington, D.C. and there are 850 direct flights each week.

There are around 122 direct flights from within District of Columbia to Illinois every day. Most flights (43%) depart in the morning.

Each week there are around 850 direct flights from within District of Columbia to Illinois. The most common day for departures is Sunday, with 17% of flights taking off on this day.

An average nonstop flight from District of Columbia to Illinois takes 8h 31m, covering a distance of 647 miles. The shortest route is Washington, D.C. Reagan-National Airport (DCA) to Chicago Midway Airport (MDW) with an average flight time of 1h 55m.

There are not any long-haul (6-12 hour flight duration) or medium-haul (3-6 hour flight duration) flights to Illinois. Instead, there are 850 short-haul flights (up to 3 hour flight duration), with the most arriving from Washington, D.C..

Based on KAYAK flight searches, the most popular destination is Chicago (90% of total searches to Illinois). The next most popular destinations are St. Louis (9%) and Moline (0%). Searches for flights to Peoria (0%), to Bloomington (0%) and to Springfield (0%) are also popular.