Flights from Philadelphia International Airport to Illinois

Flight deals from Philadelphia International Airport to Illinois

Looking for cheap flights from Philadelphia International Airport to Illinois, or a last-minute trip? Find the cheapest prices on one-way and round-trip flights right here.

Chicago.$55 per passenger.Departing Tue, Jan 13, returning Thu, Jan 15.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Philadelphia International on Tue, Jan 13, arriving in Chicago O'Hare International.Inbound direct flight with Frontier Airlines departing from Chicago O'Hare International on Thu, Jan 15, arriving in Philadelphia International.Price includes taxes and charges.From $55, select.

Moline.$263 per passenger.Departing Mon, Dec 22, returning Mon, Jan 12.Round-trip flight with American Airlines.Outbound indirect flight with American Airlines, departing from Philadelphia International on Mon, Dec 22, arriving in Moline.Inbound indirect flight with American Airlines, departing from Moline on Mon, Jan 12, arriving in Philadelphia International.Price includes taxes and charges.From $263, select.

Peoria.$286 per passenger.Departing Fri, Dec 26, returning Mon, Dec 29.Round-trip flight with United.Outbound indirect flight with United, departing from Philadelphia International on Fri, Dec 26, arriving in Greater Peoria.Inbound indirect flight with United, departing from Greater Peoria on Mon, Dec 29, arriving in Philadelphia International.Price includes taxes and charges.From $286, select.

Quincy.$469 per passenger.Departing Tue, Dec 23, returning Sat, Dec 27.Round-trip flight with Frontier Airlines and Contour Airlines.Outbound indirect flight with Frontier Airlines, departing from Philadelphia International on Tue, Dec 23, arriving in Quincy.Inbound indirect flight with Contour Airlines, departing from Quincy on Sat, Dec 27, arriving in Philadelphia International.Price includes taxes and charges.From $469, select.

Springfield.$492 per passenger.Departing Tue, Dec 23, returning Sat, Dec 27.Round-trip flight with American Airlines.Outbound indirect flight with American Airlines, departing from Philadelphia International on Tue, Dec 23, arriving in Springfield.Inbound indirect flight with American Airlines, departing from Springfield on Sat, Dec 27, arriving in Philadelphia International.Price includes taxes and charges.From $492, select.

Champaign.$550 per passenger.Departing Fri, Dec 19, returning Sun, Jan 4.Round-trip flight with American Airlines.Outbound indirect flight with American Airlines, departing from Philadelphia International on Fri, Dec 19, arriving in Champaign.Inbound indirect flight with American Airlines, departing from Champaign on Sun, Jan 4, arriving in Philadelphia International.Price includes taxes and charges.From $550, select.

Decatur.$554 per passenger.Departing Fri, Dec 19, returning Sun, Jan 4.Round-trip flight with United.Outbound indirect flight with United, departing from Philadelphia International on Fri, Dec 19, arriving in Decatur.Inbound indirect flight with United, departing from Decatur on Sun, Jan 4, arriving in Philadelphia International.Price includes taxes and charges.From $554, select.

Bloomington.$561 per passenger.Departing Sat, Dec 27, returning Tue, Dec 30.Round-trip flight with American Airlines.Outbound indirect flight with American Airlines, departing from Philadelphia International on Sat, Dec 27, arriving in Central Illinois Regional.Inbound indirect flight with American Airlines, departing from Central Illinois Regional on Tue, Dec 30, arriving in Philadelphia International.Price includes taxes and charges.From $561, select.

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Flying from Philadelphia International Airport to Illinois

Arm yourself with these facts on the fly.

Cheapest flight found	$55
Cheapest month to fly	January
Average flight time	2 hrs, 22 mins
Average flights per week	399
Most popular airline	American Airlines

How to find cheap flights from Philadelphia International Airport to Illinois

We've compared the best online travel agents and flight providers on the internet to find the cheapest plane tickets from Philadelphia International Airport to Illinois. Other savvy travelers recently found round-trip flights from $55 and one-way tickets from $23. Ready to join them? Here are a few tips to help you do it the smart way.

Fly in January

The cheapest time to fly from Philadelphia International Airport to Illinois is currently January.

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 Philadelphia International Airport to anywhere you choose in Illinois.

Watch as flight prices go up and down

With Price Alerts, we'll let you know when flight prices from Philadelphia International 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 plane 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 Philadelphia International Airport to Illinois?

Yes – direct flights currently operate from Philadelphia International Airport to Chicago O'Hare International Airport in Illinois.

What is the average price of a flight from Philadelphia International Airport to Illinois?

We looked at all of the upcoming round-trip flights from Philadelphia International Airport to Illinois we could find over the next 12 months. It looks like $55 is the best price. This is good, compared to the average Illinois ticket price of $404.

What is the cheapest month to fly from Philadelphia International Airport to Illinois?

The cheapest month to fly from Philadelphia International Airport to Quincy Airport is currently December.
The cheapest month to fly from Philadelphia International Airport to Moline Airport is currently December.
The cheapest month to fly from Philadelphia International Airport to Chicago O'Hare International Airport is currently January.
And the cheapest month to fly from Philadelphia International Airport to Central Illinois Regional Airport is usually December.

On which upcoming date is it cheapest to fly from Philadelphia International Airport to Illinois?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Philadelphia International Airport to Illinois on Tuesday, January 13, 2026.

If I'm flying from Philadelphia International Airport, where in Illinois is cheapest to fly to?

If you're flying from Philadelphia International, the cheapest city in Illinois to fly into is Chicago. The cheapest airport serving Chicago at the moment is Chicago O'Hare International.