ONT - ABE

$279 Find Cheap Flights from Ontario to Allentown - 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 Ontario to Allentown departing on 9/11. 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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Everything you should know

Cheapest round-trip
$365
Delta
Sat 9/19Sat 9/26
ONT - ABE • 1 stop
Cheapest one-way
$279
Delta
Fri 9/11
ONT - ABE • 1 stop
Top airlines
Cheapest • from $365 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Nonstop flights
Not available
There are currently no direct flights between Ontario and Allentown. You'll need at least 1 connection.
Insights
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Insights
Insights
Top layover airports
Cheapest • Avg $525 (round-trip)
Shortest trip • 7h 02m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
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Good to know
Good to know
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We hope you love your trip to Allentown!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Allentown (ONT-ABE)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Allentown 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 Ontario to Allentown

Sat, Sep 19 - Sat, Sep 26
Delta Logo
12:17 pm - 10:26 pm
ONT
-
ABE
7h 09m
1 stop
Delta Logo
6:25 am - 11:07 am
ABE
-
ONT
7h 42m
1 stop
$365Delta
Thu, Nov 26 - Fri, Nov 27
Delta Logo
12:00 pm - 10:46 pm
ONT
-
ABE
7h 46m
1 stop
Delta Logo
6:30 am - 11:27 am
ABE
-
ONT
7h 57m
1 stop
$388Delta
Thu, Sep 24 - Sat, Sep 26
Delta Logo
12:17 pm - 10:26 pm
ONT
-
ABE
7h 09m
1 stop
Delta Logo
6:25 am - 11:07 am
ABE
-
ONT
7h 42m
1 stop
$391Delta
Wed, Aug 5 - Wed, Sep 2
United Airlines Logo
6:39 pm - 9:58 am
ONT
-
ABE
12h 19m
2 stops
United Airlines Logo
5:36 pm - 10:35 pm
ABE
-
ONT
7h 59m
1 stop
$402United Airlines
Tue, Nov 24 - Fri, Nov 27
Delta Logo
10:59 pm - 12:04 pm
ONT
-
ABE
10h 05m
1 stop
Delta Logo
6:30 am - 11:27 am
ABE
-
ONT
7h 57m
1 stop
$439Delta
Mon, Nov 23 - Fri, Nov 27
Delta Logo
10:59 pm - 12:04 pm
ONT
-
ABE
10h 05m
1 stop
Delta Logo
6:30 am - 11:27 am
ABE
-
ONT
7h 57m
1 stop
$468Delta
Tue, Aug 18 - Thu, Sep 10
Delta Logo
7:05 am - 5:23 pm
ONT
-
ABE
7h 18m
1 stop
Delta Logo
12:56 pm - 8:07 pm
ABE
-
ONT
10h 11m
1 stop
$480Delta
Fri, Sep 18 - Sat, Sep 26
United Airlines Logo
7:13 pm - 9:57 am
ONT
-
ABE
11h 44m
2 stops
United Airlines Logo
5:46 pm - 10:49 pm
ABE
-
ONT
8h 03m
1 stop
$486United Airlines
Wed, Aug 5 - Wed, Sep 2
United Airlines Logo
6:39 pm - 9:58 am
ONT
-
ABE
12h 19m
2 stops
United Airlines Logo
10:32 am - 8:53 pm
ABE
-
ONT
13h 21m
2 stops
$497United Airlines
Sat, Sep 26 - Tue, Sep 29
Delta Logo
12:17 pm - 10:26 pm
ONT
-
ABE
7h 09m
1 stop
Delta Logo
6:25 am - 11:07 am
ABE
-
ONT
7h 42m
1 stop
$505Delta
Booking Insights

KAYAK's insights & trends for Ontario to Allentown flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Allentown, 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 Ontario to Allentown is May, where tickets cost $0 (return) on average. On the other hand, the most expensive months are September and March, where the average cost of round-trip tickets is $758 and $725 respectively.

Good to know

Low seasonNovember
Cheapest flight$279
Best time to beat the crowds with an average 37% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from Ontario to Allentown

When to book flights from Ontario to Allentown

Are your dates flexible? Find out the best times to travel from Ontario to Allentown based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Allentown

  • What is the cheapest flight from Ontario to Allentown?

    In the last 5 days, the lowest price for a flight from Ontario to Allentown was $279 for a one-way ticket and $365 for a round-trip.

  • Do I need a passport to fly between Ontario and Allentown?

    No, a passport isn't needed to fly from Ontario to Allentown. However, local authorities might ask for an official ID.

  • Which aircraft models fly most regularly from Ontario to Allentown?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Allentown?

    SkyTeam is the only airline alliance operating flights between Ontario and Allentown.

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

    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 Ontario to Allentown.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Allentown from Ontario 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 Ontario to Allentown?

    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 to Allentown with an airline and back to Ontario with another airline. Booking your flights between Ontario and ABE can sometimes prove cheaper using this method.

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

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

Reviews of the top airline flying from Ontario to Allentown

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Allentown. 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 Ontario to Allentown? 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.
7.8
DeltaOverall score based on 8454 reviews
7.8Comfort
7.2Food
8.5Crew
7.8Entertainment
8.1Boarding
Airline reviews

Only beverages were offered to first class and I thought the flight attendant could have also served the Delta Comfort as well instead of sitting down and staring at her phone and walking past all of us to the back of the plane to charge her phone more. There was a complete lack of turbulence and was safe enough for flights attendant to walk around in the front of the plane, collect trash and serve a few people water and turn off the seat belt light. Also didn’t enforce people putting their seats into the upright position and allowed two passengers to remain reclined during landing. They seemed out to lunch completely. Usually my experience on Delta is much better.

4.0 OkayMichelle, Jun 2026
ATL - PIT
Read more Delta reviews

Only beverages were offered to first class and I thought the flight attendant could have also served the Delta Comfort as well instead of sitting down and staring at her phone and walking past all of us to the back of the plane to charge her phone more. There was a complete lack of turbulence and was safe enough for flights attendant to walk around in the front of the plane, collect trash and serve a few people water and turn off the seat belt light. Also didn’t enforce people putting their seats into the upright position and allowed two passengers to remain reclined during landing. They seemed out to lunch completely. Usually my experience on Delta is much better.

My tray was broken so i had no place to work or eat except my lap. Flight attendant said I would get an email with some credit or miles, it was a complete waste of time as I could only function at about 20% of normal. I have not received anything yet.

Delayed. Hot. Passenger next to me was so large I couldn’t move.

2+hrs delay without any reason provided and a cramped flight

Originally, I was booked in economy. I paid several hundred additional dollars to upgrade to first class. Then I paid several more hundred dollars to change my flight to a slightly earlier flight. I asked if the changed flight would also seat me in first class, and I was told that it would. When I boarded the plane, however, I was seated in economy. So, I paid $500-600 more than I paid for my original ticket for an upgrade and a changed flight - received the changed flight (which was nice), but did not receive the upgrade. So, I was not completely satisfied.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

737-800 in first class was pretty dumpy. Seat had an uncomfortable angle, storage under the seat was blocked so even my very modest backpack didn't fit, power outlet was flaky. Weird tiny seat pockets that couldn't hold a gallon ziploc bag, emesis bag missing, etc. etc. No in-flight service due to turbulence. Crew was excellent, boarding was smooth despite a full flight.

The flight was overbooked and the staff at the gate started calling for volunteers to drop out and offering incentives. That delayed the flight

There was no wifi even after my husband paid for wifi it wasn’t working. The plane looked and felt old.

Update the cabin with tv screens or at least music sources.

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

Information on your arrival and departure airports