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$289+ Cheap flights from Ontario to Allentown (ONT - ABE)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ABE
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheap flight deals from Ontario to Allentown

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Allentown (ABE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 30, 2025.

Round-trip from

$345
(Trip.com)

One-way from

$289
(Delta)

Popular in

December

Cheapest in

October

Average price

$558
From Ontario to Allentown-Bethlehem
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One-way flight from Ontario to Allentown-Bethlehem
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Highest demand for flights based on searches. 19% potential increase in price ($114 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Ontario to Allentown

Cheapest flights from Ontario to Allentown
Explore the most affordable flight options available from Ontario to Allentown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

This Trip.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1312:59 amONT - ABE
1 stop11h 14mMultiple Airlines
Sun 8/177:00 amABE - ONT
1 stop19h 50mMultiple Airlines
Deal found 7/29$345
This Delta deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2811:45 amONT - ABE
1 stop7h 54mDelta
Thu 9/46:00 amABE - ONT
1 stop7h 35mDelta
Deal found 7/30$463
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/47:02 amONT - ABE
1 stop6h 51mUnited Airlines
Mon 10/65:28 pmABE - ONT
1 stop8h 02mUnited Airlines
Deal found 7/29$530
This American Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/46:10 amONT - ABE
2 stops13h 19mAmerican Airlines
Mon 10/61:56 pmABE - ONT
2 stops13h 03mAmerican Airlines
Deal found 7/29$648

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Allentown that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 30, 2025.
Use the filters below to find and compare flights from Ontario to Allentown that are best for you.

Fly from

Ontario

Fly to

Allentown

Route

Depart

Return

Price

OntarioAllentown

ONT - ABE

ONTABE

Ontario

Wed 8/13

12:59 am-3:13 pm

1 stop11h 14m

Allentown-Bethlehem

Sun 8/17

7:00 am-11:50 pm

1 stop19h 50m

$345

OntarioAllentown

ONT - ABE

ONTABE

Ontario

Thu 8/28

11:45 am-10:39 pm

1 stop7h 54m

Allentown-Bethlehem

Thu 9/4

6:00 am-10:35 am

1 stop7h 35m

$463

OntarioAllentown

ONT - ABE

ONTABE

Ontario

Sat 10/4

7:02 am-4:53 pm

1 stop6h 51m

Allentown-Bethlehem

Mon 10/6

5:28 pm-10:30 pm

1 stop8h 02m

$530

OntarioAllentown

ONT - ABE

ONTABE

Ontario

Sat 10/4

6:10 am-10:29 pm

2 stops13h 19m

Allentown-Bethlehem

Mon 10/6

1:56 pm-11:59 pm

2 stops13h 03m

$648

OntarioAllentown

ONT - ABE

ONTABE

Ontario

Fri 8/29

7:05 am-5:34 pm

1 stop7h 29m

$289

OntarioAllentown

ONT - ABE

ONTABE

Ontario

Sat 9/6

1:42 pm-11:58 am

2 stops19h 16m

$324

OntarioAllentown

ONT - ABE

ONTABE

Ontario

Fri 8/8

8:14 am-9:44 pm

2 stops10h 30m

$580

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Best time to book a flight from Ontario to Allentown

Have a flexible travel schedule? Discover the best time to fly to Allentown from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Ontario to Allentown?

Currently, February is the cheapest month in which you can book a flight from Ontario to Allentown (average of $289). Flying from Ontario to Allentown in December is currently the most expensive (average of $395). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Allentown

Get insights into the airlines that provide service to Allentown. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Allentown. Reviews last updated July 30, 2025.
Read through reviews of airlines operating flights from Ontario to Allentown, such as Delta, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,980 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin
United Airlines
7.4
Good
8,896 reviews
Delta
8.0
Very good
7,980 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,980 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Related info for your journey

Find useful and relevant information for your journey from Ontario to Allentown. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Ontario to Allentown round-trip?

    Our cheapest airline available from Ontario to Allentown is Delta. Our recent data shows that you can find tickets from as low as $463 on this airline. Additional options worth looking into are United Airlines and American Airlines, starting at $530 and $648 round-trip. You may be able to fly from Ontario to Allentown for 5% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Ontario to Allentown one-way?

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $289. United Airlines flights start at $324 while deals on American Airlines start at $580 one-way.

  • Can I find deals for flights from Ontario to Allentown that include hotel bookings?

    Yes. In addition to deals on Ontario to Allentown flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Allentown?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Allentown.

  • Can I find deals for business class flights from Ontario to Allentown?

    Yes. Cheapflights offers flight deals from Ontario to Allentown by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Allentown?

    Currently, February is the cheapest month in which you can book a flight from Ontario to Allentown (average of $289). Flying from Ontario to Allentown in December is currently the most expensive (average of $395). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top airline flying from Ontario to Allentown

Discover the top airline that operate flights from Ontario to Allentown. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$383Average$498FlexibilityNo cancel feeOn-timeN/A

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