ONT - ABE

$294 Find Cheap Flights from Ontario to Allentown

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 2/10. 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 Allentown

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Allentown, 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 Ontario to Allentown, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$439
American Airlines
Tue 1/13Tue 1/20
ONT - ABE • 2 stops
Cheapest one-way
$294
Delta
Tue 2/10
ONT - ABE • 1 stop
Top airlines
American Airlines
Cheapest • from $439 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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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

Tue, Jan 13 - Tue, Jan 20
American Airlines Logo
6:22 am - 10:26 pm
ONT
-
ABE
13h 04m2 stops
American Airlines Logo
1:02 pm - 10:48 pm
ABE
-
ONT
12h 46m2 stops
$439American Airlines
Tue, Jan 13 - Tue, Jan 20
Delta Logo
12:41 pm - 10:50 pm
ONT
-
ABE
7h 09m1 stop
Delta Logo
12:50 pm - 11:58 pm
ABE
-
ONT
14h 08m2 stops
$459Delta
Tue, Jan 13 - Tue, Jan 20
United Airlines Logo
6:32 pm - 10:41 am
ONT
-
ABE
13h 09m2 stops
United Airlines Logo
11:30 am - 8:58 pm
ABE
-
ONT
12h 28m2 stops
$469United Airlines
Sat, Jan 17 - Tue, Jan 20
United Airlines Logo
6:32 pm - 10:41 am
ONT
-
ABE
13h 09m2 stops
United Airlines Logo
11:30 am - 8:58 pm
ABE
-
ONT
12h 28m2 stops
$500United Airlines
Tue, Apr 21 - Tue, Apr 28
United Airlines Logo
7:00 am - 5:03 pm
ONT
-
ABE
7h 03m1 stop
United Airlines Logo
10:35 am - 8:36 pm
ABE
-
ONT
13h 01m2 stops
$513United Airlines
Tue, Jan 13 - Tue, Jan 20
Delta Logo
12:41 pm - 10:50 pm
ONT
-
ABE
7h 09m1 stop
Delta Logo
6:28 am - 11:31 am
ABE
-
ONT
8h 03m1 stop
$514Delta
Wed, Feb 18 - Sat, Feb 21
United Airlines Logo
6:37 pm - 10:01 am
ONT
-
ABE
12h 24m2 stops
United Airlines Logo
5:23 pm - 8:50 pm
ABE
-
ONT
30h 27m2 stops
$523United Airlines
Tue, Jan 13 - Tue, Jan 20
Delta Logo
12:41 pm - 10:50 pm
ONT
-
ABE
7h 09m1 stop
Delta Logo
6:28 am - 11:31 am
ABE
-
ONT
8h 03m1 stop
$533Delta
Sat, Jan 17 - Tue, Jan 20
United Airlines Logo
6:32 pm - 10:41 am
ONT
-
ABE
13h 09m2 stops
United Airlines Logo
11:30 am - 8:58 pm
ABE
-
ONT
12h 28m2 stops
$535United Airlines
Tue, Jan 13 - Tue, Jan 20
Delta Logo
12:41 pm - 10:50 pm
ONT
-
ABE
7h 09m1 stop
Delta Logo
12:50 pm - 11:58 pm
ABE
-
ONT
14h 08m2 stops
$538Delta
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.

Which airlines provide the cheapest flights from Ontario to Allentown?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Ontario to Allentown were found on American Airlines ($439) and Delta ($459).

Which airlines fly non-stop between Ontario and Allentown?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Ontario to Allentown.

There is just one airline that flies from Ontario to Allentown direct and that is Delta. The best round-trip deal found from Delta for the route is $373.

Find deals

Good to know

Low seasonNovember
Cheapest flight$294
Best time to beat the crowds with an average 34% drop in price.
Most popular time to fly with an average 24% increase in price.
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 3 days, the lowest price for a flight from Ontario to Allentown was $294 for a one-way ticket and $439 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.
7.9
DeltaOverall score based on 8017 reviews
7.9Comfort
7.9Entertainment
8.5Crew
7.2Food
8.1Boarding
Airline reviews

The flight was delayed for about 2 hrs. Other than it, it was good.

8.0 ExcellentWen, Dec 2025
LAX - MSY
Read more Delta reviews

The flight was delayed for about 2 hrs. Other than it, it was good.

I am extremely disappointed that delta internal pilot manuals now refer to the Gulf of Mexico as the “gulf of America”. You can bow down to the Orange turd on your own. I will never fly delta again

I noticed that the planes seem to be outdated. There was no entertainment per se. Also, the waiting area did not have any working electrical outlets

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

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

Information on your arrival and departure airports

Ontario (ONT)
Allentown (ABE)