$117 Find Cheap Flights from Allentown to Illinois

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 3/22. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Allentown to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Allentown to Illinois, as well as popular online travel agencies
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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
Chicagononstop$209
Moline
Moline1 stop$304
Peoria
Peoria1 stop$385
St. Louis
St. Louis1 stop$288
Chicago
Chicagononstop$209
Moline
Moline1 stop$304
Peoria
Peoria1 stop$385
St. Louis
St. Louis1 stop$288

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

Thu, Feb 12 - Sun, Feb 15
United Airlines Logo
10:36 am - 12:10 pm
ABE
-
ORD
2h 34mnonstop
United Airlines Logo
7:00 am - 10:01 am
ORD
-
ABE
2h 01mnonstop
$209United Airlines
Thu, Feb 5 - Mon, Feb 9
United Airlines Logo
11:30 am - 1:13 pm
ABE
-
ORD
2h 43mnonstop
United Airlines Logo
7:30 am - 10:41 am
ORD
-
ABE
2h 11mnonstop
$219United Airlines
Wed, Feb 4 - Sun, Feb 8
American Airlines Logo
1:02 pm - 6:01 pm
ABE
-
ORD
5h 59m
1 stop
American Airlines Logo
6:05 am - 12:32 pm
ORD
-
ABE
5h 27m
1 stop
$229American Airlines
Wed, Feb 18 - Wed, Feb 25
United Airlines Logo
5:23 pm - 6:55 pm
ABE
-
ORD
2h 32mnonstop
United Airlines Logo
7:00 am - 10:01 am
ORD
-
ABE
2h 01mnonstop
$242United Airlines
Tue, Feb 17 - Wed, Feb 25
Delta Logo
12:47 pm - 4:49 pm
ABE
-
ORD
5h 02m
1 stop
Delta Logo
2:46 pm - 10:49 pm
ORD
-
ABE
7h 03m
1 stop
$249Delta
Wed, Feb 18 - Wed, Feb 25
Delta Logo
12:47 pm - 5:45 pm
ABE
-
MDW
5h 58m
1 stop
Delta Logo
10:49 am - 5:12 pm
MDW
-
ABE
5h 23m
1 stop
$249Delta
Sat, Feb 7 - Sun, Feb 8
American Airlines Logo
1:02 pm - 6:01 pm
ABE
-
ORD
5h 59m
1 stop
American Airlines Logo
6:05 am - 12:32 pm
ORD
-
ABE
5h 27m
1 stop
$251American Airlines
Thu, Feb 26 - Wed, Mar 4
Multiple Airlines Logo
2:10 pm - 11:59 pm
ABE
-
STL
10h 49m
1 stop
Multiple Airlines Logo
3:49 pm - 8:13 pm
STL
-
ABE
27h 24m
1 stop
$288Multiple Airlines
Mon, Feb 16 - Thu, Feb 26
Multiple Airlines Logo
1:49 pm - 7:07 pm
ABE
-
MDW
30h 18m
2 stops
Multiple Airlines Logo
7:30 am - 8:10 pm
MDW
-
ABE
11h 40m
1 stop
$294Multiple Airlines
Thu, Jan 29 - Mon, Feb 2
Allegiant Air Logo
3:49 pm - 5:06 pm
ABE
-
PIA
26h 17m
1 stop
Allegiant Air Logo
5:56 pm - 11:27 am
PIA
-
ABE
16h 31m
1 stop
$385Allegiant Air
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 February.

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 72 hours was to Chicago, at $229 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 72 hours was $229.

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 $394, 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 February, when tickets cost $283 (return) on average. On the other hand, the most expensive months are June and March, when the average cost of round-trip tickets is $519 and $435 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 Saturday 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 Mondays.

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 1 week before departure. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

Good to know

Low seasonDecember
Cheapest flight$117
Best time to beat the crowds but there is an average 16% increase in price.
Most popular time to fly and prices are also 1% lower on average.
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.

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

    The cheapest time of day to fly to Illinois is generally in the evening, when round-trip flights cost $481 on average. Morning departures are around 19% 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 $571.

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 $229 one-way - $328 round-trip

Reviews of the top 3 airlines serving 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.
7.9
DeltaOverall score based on 8040 reviews
7.8Entertainment
7.2Food
8.1Boarding
7.9Comfort
8.5Crew
Airline reviews

The entertainment screens were not working and there was no air condition the entire flight. Very uncomfortable.

4.0 OkayKyle, Jan 2026
LGA - DFW
Read more Delta reviews

The entertainment screens were not working and there was no air condition the entire flight. Very uncomfortable.

I have diamond medallion status and usually we are in comfort plus . We were in main this time ( which was fine ) and my husband wanted wine . I have at least 10 vouchers for drinks that are good for this year and next! The attendant would not take the picture of the voucher as proof and never came back to check as She asked me to pull it up on delta Wi-Fi. Instead my husband just used his Amex to buy the wine . Disappointing!!!

Food is basically Sun Chips, cookies or Cheezits. I had an exit row seat so I had plenty of room. The crew was very nice and efficient. Pilot kept us informed. Pretty good flight.

Air travel sucks. It continues to be awful for all airlines. No shame on delta alone.

It was Delta, but the flight attendants were stressful and disrespectful. I am a diamond member a travel weekly. I have not had a negative thing to share in quite some time. But this was noticeable.

Comfort Plus seat 11E seemed smaller than prior flights. The movie selection is good. Watched most of the most recent Tron movie. I'll watch the remaining part later as my movie is saved in the Delta Seatback Experience.

Flight was late from Newark to Atlanta, I asked flight attendant to please let my family of 3 out first when we landed to Atlanta because we were late for our connecting flight to Quito. She didn't and we were late for 5 minutes we couldn't board the plane and spend hours trying to get another flight with customer service for the next day.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Late delayed flight delays boarding and delays leaving and delays on arrival too. Cramped plane no room no food.

DTW line is too long. The flights from DTW to BWI are always delayed for unknown reasons.

Perfect flight. Smooth flight. Arrived 20 minutes early at destination. Excellent service.

The flights were on time which was great give. It was holiday travel season and there’d been some weather issues. The only complaint and this is every time with United is the terrible seat design. The head rest is not built for comfort and having my neck bent forward for a cross country trip reminded me while I try not to take United flights as a rule.

Everything was absolutely wonderful from check in to baggage claim. Staff was very professional and sweet. Will definitely recommend United to family and friends.

They did the one thing that really matters - got to Chicago early.

The flight was on time. I generally don’t drink or eat on short flights and the seats were good and the flight attendants were friendly. That’s all I expect

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

Very bad! They kept delaying my flight and wouldn’t do anything about it

Door to door, the crew and staff were amazing. It was a stressful travel day with delays, but they were focused on customers and doing what they could to get us to our destinations.

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

Another delayed flight. When the delays exceed the duration of the flight, it’s a problem.

Little warm on the plane and delayed for an hour

So excited very proud first of all I wanna thank kayak all updates very professional and fast alart And amazing cabin crew so nice to me they deserve big salute

The boarding process needs to be fixed. The zone don't work, especially when there is hardly anyone in zones 3, 4,and 5, leaving the majority of the passengers backed up in the aisle, especially because passengers seated near the front are blocking passengers who are seated in the rear of the plane. It would also help if the size of carry on bags was more strictly enforced.

Awful. They won’t help me with anything. I booked on American but they abdicated to Iberia. The ticket was overpriced. Everything negative

I enjoyed the extra leg room compared to other airlines. The first stewards made my daughter’s birthday special by giving her an extra snack. Then the last one coming home from Chicago to Appleton made our night really enjoyable Thanks for making our trip enjoyable

It was good..clean, comfy seat. Friendly warm welcoming crew. Was able to check my cabin luggage at the gate which I was able to pickup in a decent time from baggage claim. The app gave all updates from delays to baggage claim info. Overall smooth flight.

It was a typical flight. We had a delay which seems to be the normality now. And we had no in flight service due to conditions.

After we landed we sat on the tarmac for 1.5 hours waiting to get to our gate. Ridiculous.

Terrible. Flight delayed for more than 8 hours with only a $12 meal voucher provided for the inconvenience. The airplane did not have breaks on arrival yet they still made us go through the motions and board on time knowing we could not take off then sit for 40+ minutes before having to get of the time. A complete waste of my time. I cannot believe they can stay business with these shenanigans. I’ll avoid this company like the plague moving forward as the lack of accountability is disgraceful.

This was the best 2 flights I have had with American out of SGF. Great crew both flights.

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

Information on your arrival and departure airports