ABE - ONT

$151 Find Cheap Flights from Allentown to Ontario

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 Ontario departing on 1/17. 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 Ontario

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

Cheapest round-trip
$329
Overall average: $507
Delta
Wed 4/15Wed 4/22
ABE - ONT • 1 stop
Cheapest one-way
$151
Delta
Sat 1/17
ABE - ONT • 1 stop
Top airlines
Delta
Cheapest • from $329 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
October
Cheapest • 47% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Ontario!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Allentown to Ontario (ABE-ONT)

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

Wed, Apr 15 - Wed, Apr 22
Delta Logo
12:47 pm - 6:28 pm
ABE
-
ONT
8h 41m1 stop
Delta Logo
12:39 pm - 10:59 pm
ONT
-
ABE
7h 20m1 stop
$329Delta
Wed, Apr 15 - Wed, Apr 22
Delta Logo
12:47 pm - 6:28 pm
ABE
-
ONT
8h 41m1 stop
Delta Logo
12:39 pm - 10:59 pm
ONT
-
ABE
7h 20m1 stop
$349Delta
Sat, Jan 17 - Tue, Mar 17
Delta Logo
2:00 pm - 9:05 pm
ABE
-
ONT
10h 05m1 stop
Delta Logo
12:50 pm - 10:59 pm
ONT
-
ABE
7h 09m1 stop
$365Delta
Sat, Jan 17 - Tue, Mar 17
United Airlines Logo
11:30 am - 8:58 pm
ABE
-
ONT
12h 28m2 stops
United Airlines Logo
11:59 pm - 9:56 am
ONT
-
ABE
6h 57m1 stop
$420United Airlines
Sun, Jan 18 - Tue, Jan 27
United Airlines Logo
6:15 am - 5:43 pm
ABE
-
ONT
14h 28m2 stops
United Airlines Logo
5:05 am - 9:05 pm
ONT
-
ABE
13h 00m2 stops
$425United Airlines
Wed, Feb 11 - Wed, Feb 18
United Airlines Logo
11:30 am - 8:58 pm
ABE
-
ONT
12h 28m2 stops
United Airlines Logo
6:37 pm - 10:01 am
ONT
-
ABE
12h 24m2 stops
$429United Airlines
Sat, Jan 17 - Fri, Mar 20
Delta Logo
2:00 pm - 9:05 pm
ABE
-
ONT
10h 05m1 stop
Delta Logo
12:50 pm - 10:59 pm
ONT
-
ABE
7h 09m1 stop
$434Delta
Wed, Feb 25 - Mon, Mar 2
United Airlines Logo
10:36 am - 8:50 pm
ABE
-
ONT
13h 14m2 stops
United Airlines Logo
9:06 pm - 10:01 am
ONT
-
ABE
9h 55m2 stops
$439United Airlines
Wed, Jan 14 - Tue, Mar 17
Delta Logo
6:28 am - 11:31 am
ABE
-
ONT
8h 03m1 stop
Delta Logo
12:50 pm - 10:59 pm
ONT
-
ABE
7h 09m1 stop
$444Delta
Wed, Apr 15 - Wed, Apr 22
American Airlines Logo
12:00 pm - 6:24 pm
ABE
-
ONT
9h 24m2 stops
American Airlines Logo
9:24 am - 12:22 am
ONT
-
ABE
11h 58m2 stops
$454American Airlines
Booking Insights

KAYAK's insights & trends for Allentown to Ontario flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Allentown to Ontario, 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 Ontario is October, where tickets cost $329 (return) on average. On the other hand, the most expensive months are June and February, where the average cost of round-trip tickets is $1,281 and $847 respectively.

Good to know

Low seasonAugust
Cheapest flight$151
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly and prices are also 15% lower on average.
Flight from Allentown to Ontario

When to book flights from Allentown to Ontario

Are your dates flexible? Find out the best times to travel from Allentown to Ontario 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 Allentown to Ontario

  • What is the cheapest flight from Allentown to Ontario?

    In the last 3 days, the lowest price for a flight from Allentown to Ontario was $151 for a one-way ticket and $329 for a round-trip.

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

    A passport is not required to fly from Allentown to Ontario.

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

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

  • Which airline alliances offer flights from Allentown to Ontario?

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

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

    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 Ontario.

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

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

    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 Ontario with an airline and back to Allentown with another airline. Booking your flights between Allentown and ONT 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 Allentown to Ontario?

    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 Ontario from Allentown 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 Allentown to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Allentown to Ontario. 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 Ontario? 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 8013 reviews
7.8Entertainment
7.9Comfort
8.1Boarding
8.5Crew
7.2Food
Airline reviews

The gate attendants and the crew were terrible. Because of high winds, they needed to carry more fuel, so they had to get volunteers to take the next flight at 6 am the next day. They did a terrible job of it - our flight ended up taking off just under 3 hours of the scheduled time. I hope to never fly Delta again.

2.0 MediocreBarbara, Dec 2025
PHL - MSP
Read more Delta reviews

The gate attendants and the crew were terrible. Because of high winds, they needed to carry more fuel, so they had to get volunteers to take the next flight at 6 am the next day. They did a terrible job of it - our flight ended up taking off just under 3 hours of the scheduled time. I hope to never fly Delta again.

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.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

The crew took good care of us. The flight from ATL to SFO is a longer one, and there were multiple beverage offerings. I like the 757's that Delta uses. Good airplane that is comfortable. I do wish Delta would separate Priority boarding from the better seats. I would gladly take a smaller seat in an open row than be jammed into Comfort just to get priority boarding, just to make sure I don't have to check a bag.

Gate agent rushed to fill hot jetway with crowd so it took over 12 minutes to go from gate to plane. Just like a discount airline Pooly prepared cabin and third time that claim of rough air prevented any cabin service. Friends on a Southwest flight at similar time had service.

I was uncomfortably cold on the plane. Other than that it was uneventful and therefore as enjoyable as a plane ride can be.

Food was surprisingly good but the WiFi was not great

My flight was extremely cold. I had a jacket and a cover was left in each seat. The cover was extremely thin and I have a disability, fibromyalgia and arthrithis and AC air is the worst. I closed my vent and my husbands vent and it still was frigid. I asked the attendant if I could get another cover and she quickly almost dismissively and totally unconcerned stating, (I quote) (one per chair) and walked off so quickly that I didn't get a chance to explain to her that I literally have adisability. I didnt want to make a seen so I set on that flight for over 5 hours in pain, joints locking up and extremely uncomfortable. When my fibromyalgia flares up my joints not only ache but they will lock up also and it takes me days to get back to my regular self even though I take medication for it. I felt like it would not have hurt anyone at all for her to just give me an extra cover because I'm sure they have all types of medical issues in people that fly every day.

Not a "Delta" issue, but a JFK issue: We booked a connecting flight with 3 1/2 hours between to clearn immigration and customs. Our inbound flight (BCN to JFK) was on the taxiway 45 minutes which ate into our layover time. Immigtration was insanely quick with the CBP MPC app; however, clearing TSA (again, after we were ALREADY cleared in Spain on the inbound international flight) took over 95 minutes. This left us with 10 minutes before boarding the connecting flight (JFK to SAN) to walk to the far end of Terminal 4 and try to find food. We didn't find any food that could promise to serve us in under 10 minutes so we boarded the Delta flight after coming off a plance and an 8-hour flight knowing that we wouldn't be served any food on the next 5 1/2 hour flight. I feel like Delta needs to put pressure on the JFK TSA to open more screening stations (by our count, we saw only 5 scanners open and a line of - as we said - over 90 minutes. The insult is that we WERE ALREADY SCREENED through TSA, but as you come off one flight into the USA, you have to go through the whole process again. It seems like if you have a connecting flight, there should be a way to pass through immigration and customs without needing to return through TSA.

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

Information on your arrival and departure airports