Cheap Flights from Allentown Airport to Illinois from $317 Return

Flight deals from Allentown Airport to Illinois

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

Chicago.$236 per passenger.Departing Sun, 12 Oct.One-way flight with Allegiant Air.Outbound indirect flight with Allegiant Air, departs from Allentown on Sun, 12 Oct, arriving in Chicago O'Hare International.Price includes taxes and charges.From $236, select.

See more deals

Flying from Allentown Airport to Illinois

Arm yourself with these facts on the fly.

Cheapest flight found	$236
Cheapest month to fly	October
Average flight time	2 hrs, 34 mins
Average flights per week	45
Most popular airline	United

How to find cheap flights from Allentown Airport to Illinois

We've compared the best online travel agents and flight providers on the internet to find the cheapest plane tickets from Allentown Airport to Illinois. Other savvy travellers recently found return flights from $317 and one-way tickets from $236. 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 Allentown 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 Allentown 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 Allentown 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 Allentown Airport to Illinois?

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

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

We looked at all of the upcoming return flights from Allentown Airport to Illinois we could find over the next 12 months. It looks like $317 is the best price. This is good, compared to the average Illinois ticket price of $445.

What is the cheapest month to fly from Allentown Airport to Illinois?

The cheapest month to fly from Allentown Airport to Chicago O'Hare International Airport is currently October.
The cheapest month to fly from Allentown Airport to Greater Peoria Airport is usually October.

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

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Allentown Airport to Illinois on Sunday, 19 October 2025.

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

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