Cheap Flights from Washington Dulles Airport to Illinois from $215 Return

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.$109 per passenger.Departing Fri, 7 Nov.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Washington Dulles on Fri, 7 Nov, arriving in Chicago O'Hare International.Price includes taxes and charges.From $109, select.

Moline.$190 per passenger.Departing Wed, 15 Oct.One-way flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Wed, 15 Oct, arriving in Moline.Price includes taxes and charges.From $190, select.

Peoria.$362 per passenger.Departing Thu, 30 Oct.One-way flight with United.Outbound indirect flight with United, departs from Washington Dulles on Thu, 30 Oct, arriving in Greater Peoria.Price includes taxes and charges.From $362, select.

Bloomington.$590 per passenger.Departing Fri, 3 Oct.One-way flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Fri, 3 Oct, arriving in Central Illinois Regional.Price includes taxes and charges.From $590, select.

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Flying from Washington Dulles Airport to Illinois

Arm yourself with these facts on the fly.

Cheapest flight found	$109
Cheapest month to fly	November
Average flight time	2 hrs, 8 mins
Average flights per week	202
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 $215 and one-way tickets from $109. Ready to join them? Here are a few tips to help you do it the smart way.

Fly in October

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

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 Illinois 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 $215 is the best price. This is good, compared to the average Illinois ticket price of $386.

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

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

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 Saturday, 18 October 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.