Flights from Washington Dulles Airport to Illinois

Flight deals from Washington Dulles Airport to Illinois

Looking for cheap tickets from Washington Dulles Airport to Illinois, or a last-minute trip? Find the lowest prices on one-way and return tickets right here.

Chicago.$3,207 per passenger.Departing Thu, 8 May, returning Sun, 11 May.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Washington Dulles on Thu, 8 May, arriving in Chicago Midway.Inbound indirect flight with Frontier Airlines, departs from Chicago Midway on Sun, 11 May, arriving in Washington Dulles.Price includes taxes and charges.From $3,207, select.

Chicago.$3,227 per passenger.Departing Sat, 24 May, returning Sun, 25 May.Return flight with United.Outbound direct flight with United departs from Washington Dulles on Sat, 24 May, arriving in Chicago O'Hare International.Inbound direct flight with United departs from Chicago O'Hare International on Sun, 25 May, arriving in Washington Dulles.Price includes taxes and charges.From $3,227, select.

Bloomington.$6,263 per passenger.Departing Sat, 10 May, returning Sun, 11 May.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Sat, 10 May, arriving in Central Illinois Regional.Inbound indirect flight with Delta, departs from Central Illinois Regional on Sun, 11 May, arriving in Washington Dulles.Price includes taxes and charges.From $6,263, select.

Moline.$8,047 per passenger.Departing Wed, 3 Sep, returning Sun, 7 Sep.Return flight with United.Outbound indirect flight with United, departs from Washington Dulles on Wed, 3 Sep, arriving in Moline.Inbound indirect flight with United, departs from Moline on Sun, 7 Sep, arriving in Washington Dulles.Price includes taxes and charges.From $8,047, select.

Peoria.$9,490 per passenger.Departing Thu, 22 May, returning Tue, 27 May.Return flight with United.Outbound indirect flight with United, departs from Washington Dulles on Thu, 22 May, arriving in Greater Peoria.Inbound indirect flight with United, departs from Greater Peoria on Tue, 27 May, arriving in Washington Dulles.Price includes taxes and charges.From $9,490, select.

Decatur.$11,465 per passenger.Departing Thu, 8 May, returning Sun, 11 May.Return flight with United.Outbound indirect flight with United, departs from Washington Dulles on Thu, 8 May, arriving in Decatur.Inbound indirect flight with United, departs from Decatur on Sun, 11 May, arriving in Washington Dulles.Price includes taxes and charges.From $11,465, select.

Flying from Washington Dulles Airport to Illinois

Arm yourself with these facts on the fly.

Cheapest flight found	$1,603, Chicago
Cheapest month to fly	May
Average flight time	2 hrs, 13 mins
Average flights per week	219
Most popular airline	United

How to find cheap flights from Washington Dulles Airport to Illinois

We've compared the best online travel agents and flight providers on the internet to find the cheapest plane tickets from Washington Dulles Airport to Illinois. Other savvy travellers recently found return flights from $3,207 and one-way tickets from $1,603. Ready to join them? Here are a few tips to help you do it the smart way.

Fly in May

The cheapest time to fly from Washington Dulles Airport to Illinois is currently May.

Fly on a Thursday

From our data, we can see that Thursday seems to be the cheapest time to fly from Washington Dulles Airport to Illinois.

Flex your dates for the best rates

If you’re flexible on your departure dates, you can use Skyscanner's whole month tool to find the cheapest day of the year to fly from Washington Dulles Airport to anywhere you choose in Illinois.

Watch as fares rise and fall

With Price Alerts, we'll let you know when flight prices from Washington Dulles Airport to your chosen airport in Illinois go up or down so you can book when the time is just right.

Relax – these are fee-free flight tickets

With us, there are no added fees – the Washington Dulles Airport to Illinois flight price you see when you search with us is what you pay to the provider.

Frequently asked questions

Are there any direct flights from Washington Dulles Airport to Illinois?

Yes - direct flights currently operate from Washington Dulles Airport to Chicago O'Hare International Airport in Illinois.

Which other Washington D.C. airports offer direct flights to Illinois?

Baltimore Washington International Airport offers direct flights to Illinois.

What is the average price of a flight from Washington Dulles Airport to Illinois?

We looked at all of the upcoming return flights from Washington Dulles Airport to Illinois we could find over the next 12 months. It looks like $3,207 is the best price. This is good, compared to the average Illinois ticket price of $7,295.

What is the cheapest month to fly from Washington Dulles Airport to Illinois?

The cheapest month to fly from Washington Dulles Airport to Central Illinois Regional Airport is currently May.
The cheapest month to fly from Washington Dulles Airport to Chicago O'Hare International Airport is currently May.
The cheapest month to fly from Washington Dulles Airport to Chicago Midway Airport is currently May.
And the cheapest month to fly from Washington Dulles Airport to Decatur Airport is usually May.

Which upcoming date is cheapest to fly from Washington Dulles Airport to Illinois on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Washington Dulles Airport to Illinois on Thursday, 8 May 2025.

If I'm flying from Washington Dulles Airport, where in Illinois is cheapest to fly into?

If you're flying from Washington Dulles, the cheapest city in Illinois to fly into is Chicago. The cheapest airport serving Chicago at the moment is Chicago Midway.