ONT - ABE

$259 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 11/8. 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

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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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

Wed, Feb 18 - Sat, Feb 21
Delta Logo
1:00 pm - 10:52 pmONT-ABE
6h 52m1 stop
Delta Logo
1:00 pm - 9:14 pmABE-ONT
11h 14m1 stop
$374Delta
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Sat, Nov 1 - Sat, Nov 8
Delta Logo
11:36 am - 10:15 pmONT-ABE
7h 39m1 stop
Delta Logo
12:46 pm - 7:19 pmABE-ONT
9h 33m1 stop
$404Delta
Find Deal
Sat, Nov 1 - Sat, Nov 8
Delta Logo
7:05 am - 5:20 pmONT-ABE
7h 15m1 stop
Delta Logo
12:46 pm - 9:20 pmABE-ONT
11h 34m2 stops
$409Delta
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Wed, Feb 18 - Sat, Feb 21
United Airlines Logo
6:37 pm - 9:58 amONT-ABE
12h 21m2 stops
United Airlines Logo
10:33 am - 9:19 pmABE-ONT
13h 46m2 stops
$419United Airlines
Find Deal
Wed, Feb 18 - Sat, Feb 21
Delta Logo
1:00 pm - 10:52 pmONT-ABE
6h 52m1 stop
Delta Logo
1:00 pm - 9:14 pmABE-ONT
11h 14m1 stop
$428Delta
Find Deal
Sat, Oct 18 - Tue, Oct 21
United Airlines Logo
7:02 am - 4:53 pmONT-ABE
6h 51m1 stop
United Airlines Logo
1:00 pm - 8:24 pmABE-ONT
10h 24m2 stops
$444United Airlines
Find Deal
Tue, Oct 21 - Thu, Oct 30
United Airlines Logo
6:36 pm - 10:38 amONT-ABE
13h 02m2 stops
United Airlines Logo
5:22 pm - 10:31 pmABE-ONT
8h 09m1 stop
$448United Airlines
Find Deal
Mon, Oct 13 - Sat, Oct 18
American Airlines Logo
10:29 pm - 2:13 pmONT-ABE
12h 44m1 stop
American Airlines Logo
5:53 pm - 8:07 pmABE-ONT
29h 14m1 stop
$791American Airlines
Find Deal
Mon, Oct 13 - Mon, Oct 20
American Airlines Logo
10:29 pm - 9:40 pmONT-ABE
20h 11m1 stop
American Airlines Logo
5:53 pm - 9:36 pmABE-ONT
30h 43m1 stop
$808American Airlines
Find Deal
Mon, Oct 13 - Mon, Oct 20
American Airlines Logo
11:59 pm - 9:40 pmONT-ABE
18h 41m2 stops
American Airlines Logo
5:53 pm - 9:36 pmABE-ONT
30h 43m1 stop
$813American Airlines
Find Deal

Everything you should know

Top airlines
Delta
Cheapest • from $374 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$374
Delta
Wed 2/18Sat 2/21
ONT - ABE • 1 stop
Cheapest one-way
$259
Multiple Airlines
Sat 11/8
ONT - ABE • 3 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Allentown!
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’s the cheapest day of the week to fly from Ontario to Allentown?

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

Your flight ticket price will generally be cheaper if you fly to Allentown on a Friday and more expensive on a Thursday. On your return trip to Ontario, you should consider flying back on a Friday, and avoid Thursdays for better deals.

Find deals

Good to know

Cheapest flight$259
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 $259 for a one-way ticket and $374 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 7962 reviews
8.2Boarding
7.9Entertainment
7.9Comfort
7.3Food
8.5Crew
Airline reviews

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.

2.0 MediocreAnonymous, Sep 2025SNA - SEA
Read more Delta reviews

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.

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

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

There are 4 flights in consecutive gates with about the same departure time. Two flights were boarding at the same time. One was delayed or boarding would be happening at the same time. I am not sure what Delta and LAX need to do to have a better layout at the end of Terminal 2

There was a security issue at the airport and we were unable to land. We circled endlessly and then landed at another airfield for fuel. We then circled the airport again, almost landed but didn’t fully touch down before circling again. I am thankful to the crew for keeping us safe- the issue was the airline and staff at the airport getting us seats on our connecting flights. That part was hours of searching for someone and getting in double my steps.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

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

Information on your arrival and departure airports

Ontario (ONT)
Allentown (ABE)

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