$108 Find Cheap Flights from Allentown to Illinois - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Allentown to Illinois departing on 8/31. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Allentown to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Chicago
Chicago1 stop$232
Moline
Moline1 stop$261
Peoria
Peoria1 stop$389
St. Louis
St. Louis1 stop$265
Paducah
Paducah1 stop$564
Chicago
Chicago1 stop$232
Moline
Moline1 stop$261
Peoria
Peoria1 stop$389
St. Louis
St. Louis1 stop$265
Paducah
Paducah1 stop$564

Book Cheap Allentown to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Allentown to Illinois that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Allentown to Illinois

Mon, Aug 17 - Mon, Aug 31
Multiple Airlines Logo
7:30 am - 12:50 pm
ABE
-
ORD
30h 20m
1 stop
Multiple Airlines Logo
8:05 am - 5:28 pm
ORD
-
ABE
8h 23m
1 stop
$232Multiple Airlines
Fri, Aug 28 - Mon, Aug 31
Multiple Airlines Logo
5:25 pm - 12:50 pm
ABE
-
ORD
20h 25m
1 stop
Multiple Airlines Logo
8:05 am - 5:28 pm
ORD
-
ABE
8h 23m
1 stop
$233Multiple Airlines
Wed, Aug 12 - Sat, Aug 15
Delta Logo
6:08 pm - 10:19 pm
ABE
-
MLI
5h 11m
1 stop
Delta Logo
11:08 am - 5:23 pm
MLI
-
ABE
5h 15m
1 stop
$261Delta
Wed, Sep 9 - Sat, Sep 12
American Airlines Logo
9:13 am - 1:16 pm
ABE
-
STL
5h 03m
1 stop
American Airlines Logo
11:01 am - 4:40 pm
STL
-
ABE
4h 39m
1 stop
$265American Airlines
Fri, Aug 28 - Mon, Aug 31
United Airlines Logo
5:36 pm - 7:05 pm
ABE
-
ORD
2h 29mnonstop
United Airlines Logo
6:47 am - 9:57 am
ORD
-
ABE
2h 10mnonstop
$269United Airlines
Thu, Aug 27 - Mon, Aug 31
Multiple Airlines Logo
2:28 pm - 11:08 pm
ABE
-
ORD
9h 40m
1 stop
Multiple Airlines Logo
8:05 am - 5:28 pm
ORD
-
ABE
8h 23m
1 stop
$271Multiple Airlines
Thu, Aug 27 - Mon, Aug 31
Multiple Airlines Logo
2:28 pm - 11:08 pm
ABE
-
ORD
9h 40m
1 stop
Multiple Airlines Logo
8:05 am - 5:28 pm
ORD
-
ABE
8h 23m
1 stop
$273Multiple Airlines
Thu, Aug 6 - Mon, Aug 10
American Airlines Logo
9:36 am - 11:00 am
ABE
-
ORD
2h 24mnonstop
American Airlines Logo
1:35 pm - 4:42 pm
ORD
-
ABE
2h 07mnonstop
$274American Airlines
Sat, Aug 1 - Tue, Aug 11
Delta Logo
6:05 pm - 11:20 pm
ABE
-
STL
6h 15m
1 stop
Delta Logo
9:15 am - 5:23 pm
STL
-
ABE
7h 08m
1 stop
$275Delta
Fri, Sep 4 - Mon, Sep 7
United Airlines Logo
6:15 am - 7:44 am
ABE
-
ORD
2h 29mnonstop
United Airlines Logo
6:47 am - 9:57 am
ORD
-
ABE
2h 10mnonstop
$279United Airlines
Booking Insights

KAYAK's insights & trends for Allentown to Illinois flights

Get data-powered insights and trends into flights from Allentown to Illinois to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Allentown to Illinois?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Allentown to Illinois departing in August.

What is the cheapest Allentown to Illinois flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Illinois from Allentown found in the last 5 days was to Chicago, at $269 round-trip. The most popular route is from Allentown (ABE) to Chicago O'Hare Intl Airport (ORD), and the cheapest round-trip airline ticket found on this route in the last 5 days was $269.

What is the cheapest time of day to fly to Illinois?

The average price for all round-trip flights from Allentown to Illinois depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Illinois is generally in the evening, when round-trip flights cost $428 on average. Morning departures are around 21% more expensive than evening flights, on average. The most expensive time of day to fly to Illinois is generally in the morning, which is peak travel time and where the average cost of a ticket is $520.

Can I save money by flying with a layover from Allentown to Illinois?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $343, prices are generally cheapest when you fly direct.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Allentown to Illinois, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Allentown to Illinois is April, when tickets cost $102 (return) on average. On the other hand, the most expensive months are June and January, when the average cost of round-trip tickets is $209 and $208 respectively.

What’s the cheapest day of the week to fly from Allentown to Illinois?

The average price of all round-trip flights from Allentown to Illinois clicked on KAYAK for each day over the last 12 months.

When flying from Allentown to Illinois, you should consider leaving on a Friday and avoid Sundays if you are looking for the best rates. For your return to Allentown, you’ll find the best rates on Saturdays and the most expensive ones on Sundays.

How far in advance should I book a flight from Allentown to Illinois?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Allentown to Illinois, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Allentown to Illinois, you should book around 5 weeks before departure, which saves you about 9% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$108
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly with an average 1% increase in price.
Flight from Allentown to Chicago O'Hare Airport

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Allentown to Illinois?

    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 Allentown to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Allentown to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Allentown to Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Allentown to Illinois?

    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 Allentown to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Allentown to Illinois?

    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 Allentown to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from Allentown to the following destinations at these prices or less: Chicago $325 one-way - $352 round-trip

Reviews of the top airlines flying from Allentown to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Allentown to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Allentown to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9927 reviews
6.7Food
7.3Comfort
7.1Entertainment
7.7Boarding
8.1Crew
Airline reviews

1 flight cancelled Had to fly out of different city Flight at new departure city was delayed 3 hours causing us to miss connecting flights. By the time we did make it to Prague our luggage did not. Had to wait day and a half for luggage to be delivered. Customer service was not good. Agents did not arrive at gate until 5-10 minutes before boarding

2.0 MediocreRuss, Jun 2026
FOD - ORD
Read more United Airlines reviews

1 flight cancelled Had to fly out of different city Flight at new departure city was delayed 3 hours causing us to miss connecting flights. By the time we did make it to Prague our luggage did not. Had to wait day and a half for luggage to be delivered. Customer service was not good. Agents did not arrive at gate until 5-10 minutes before boarding

Awful. Delayed flights, missed connection to Toronto. Hotel vouchers were for already booked hotels x3. Giant waste of my time

Boarding was great, and the crew were very friendly. The seats must have been a bit on the older side and you could feel some of the seat components through the padding. Also, the plugs did not work on the row's entertainment screen or charging ports. Checked bag was transferred for connecting flight, and we appreciated how early we had the connecting gate information.

Very easy ! Use the kiosk and bag drop and right to security within 10 min

Over 5 hour delay with minimal updates or ability to standby for alternative flights. During boarding and 1 hr+ wait for takeoff, seats were drenched w water from air conditioning condensation and always leftover crumbs on carpet and seats

Boarded early, left early, arrived 40 mins early! A win win for me!

These airplanes should be illegal. The seats are two tight, it is a safety issue. Wheelchair support was ridiculously slow. We almost missed our flight.

The flight I was supposed to be on was supposed to take off at 1:50 from State College. It was delayed over and over and over again until somehow I had to rebook on a flight that was supposed to have left State College at 8 am that morning but didn't end up taking off until almost 6 pm. Not only was this completely unacceptable, the "token from United" was a 15 dollar meal voucher that has to be used by today. I would personally like some miles added to my account for this inconvenience. I was in transit for 8 hours from the time I arrive at State College Aiport to when I got home. I was supposed to be home at 3 pm and I returned at 8 pm. Unacceptable. I have not been on an on Time united flight in nearly 5 years.

newer aircraft, ability to connect my headset via blue tooth for entertainment.

Surprisingly easy! I was hesitant to try this, but the cost swayed me. I actually felt like I had less stress than all the taxiing and possible delays that occur with short regional flights where you spend less time in the air than getting to and from the plane..

The planes can use an actual cleaning. The armrest and seats do not appear to be cleaned on this one and most other planes.

Flight was delayed…once landed at ORD, no gates were available so made us wait for 56 minutes after we landed to let us out of the aircraft!

Pilot navigated severe weather/snow storm with skill. Described his intentions clearly

Excellent - explanations were clear staff was nice and flight was comfortable

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

The airline schedule services was simply mediocre. The ground crew is fine; they are doing their best. The after-delay services were simply poor, and after-cancelling services were almost non-existence. Receiving refund is one rescuing point, but please keep in mind that, people wants to get home or get to their destinations. Cancelling without aftermath recourse is simply poor services. AA needs to fire the marketing department, and the customer-service related leaders.

Our 9:10 am scheduled flight continued to get delayed all day with no information given from the agents as to why. It wasn’t until I went to the customer service desk and got us switched to another flight at 2:44 pm (that wasn’t nonstop like our booked flight) that the agent finally was able to find out it was due to a fuel leak. I don’t know if our original flight ever took off but I don’t find it acceptable to leave people sitting in an airport all day with no explanation.

This flight was awful all around. Delays on the tarmac at PHL before takeoff and at the tarmac in Chicago caused me to miss my final connection. This was completely avoidable, in my opinion.

Great flight. Quick boarding and departure. No problems. Flight crew were very friendly and professional.

This flight was a horror. Every seat was filled, many of them by passengers coughing and sniffling (including one immediately to my left and another across the aisle to my right). The CO2 level in the cabin peaked at an outrageous 2,847 ppm during boarding and never fell below 1,500 ppm for the entire flight. I wore a mask over another mask and can only hope that that, plus the plane's filtration system, was enough to keep me from getting sick along with every other passenger on that plane. The recording says safety is American's highest priority, but refusing to mandate masks on board when COVID-19 is still a threat shows that the airline's actual attitude toward passenger and crew safety is one of depraved indifference.

Everything you need to know for your flight from Allentown to Illinois

Information on your arrival and departure airports