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Allentown

$288+ 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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ABE
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 September 11, 2025.

Round-trip from

$339
(Delta)

One-way from

$288
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$547
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. 20% potential increase in price ($121 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 11, 2025.

This Delta deal was found by Cheapflights users on 9/10. 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.
Sat 9/2711:55 amONT - ABE
1 stop7h 27mDelta
Sat 10/46:00 amABE - ONT
1 stop7h 42mDelta
Deal found 9/10$339
This Delta deal was found by Cheapflights users on 9/10. 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.
Wed 9/2411:55 amONT - ABE
1 stop7h 46mDelta
Sat 10/46:00 amABE - ONT
1 stop7h 42mDelta
Deal found 9/10$374
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Fri 9/266:36 pmONT - ABE
2 stops13h 02mUnited Airlines
Tue 9/301:00 pmABE - ONT
2 stops12h 52mUnited Airlines
Deal found 9/10$379
This Delta deal was found by Cheapflights users on 9/10. 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.
Sat 9/2011:55 amONT - ABE
1 stop7h 27mDelta
Sat 10/46:00 amABE - ONT
1 stop7h 42mDelta
Deal found 9/10$384
This Delta deal was found by Cheapflights users on 9/10. 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.
Wed 9/2411:55 amONT - ABE
1 stop7h 46mDelta
Tue 9/306:00 amABE - ONT
1 stop7h 42mDelta
Deal found 9/10$404
This Delta deal was found by Cheapflights users on 9/10. 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.
Sat 9/2011:55 amONT - ABE
1 stop7h 27mDelta
Tue 9/306:00 amABE - ONT
1 stop7h 42mDelta
Deal found 9/10$414
This Delta deal was found by Cheapflights users on 9/10. 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.
Wed 9/2411:55 amONT - ABE
1 stop7h 46mDelta
Tue 10/76:00 pmABE - ONT
1 stop7h 22mDelta
Deal found 9/10$439
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 9/246:50 pmONT - ABE
2 stops12h 48mUnited Airlines
Sat 10/41:00 pmABE - ONT
1 stop8h 06mUnited Airlines
Deal found 9/10$444
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 9/246:50 pmONT - ABE
2 stops12h 48mUnited Airlines
Tue 9/301:00 pmABE - ONT
2 stops12h 52mUnited Airlines
Deal found 9/10$479
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Tue 9/236:50 pmONT - ABE
2 stops14h 08mUnited Airlines
Sat 10/41:00 pmABE - ONT
1 stop8h 06mUnited Airlines
Deal found 9/10$489

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 September 11, 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

Fri 9/26

6:36 pm-10:38 am

2 stops13h 02m

Allentown-Bethlehem

Tue 9/30

1:00 pm-10:52 pm

2 stops12h 52m

$379

OntarioAllentown

ONT - ABE

ONTABE

Ontario

Tue 9/23

11:55 am-10:41 pm

1 stop7h 46m

Allentown-Bethlehem

Tue 9/30

6:00 am-10:42 am

1 stop7h 42m

$414

OntarioAllentown

ONT - ABE

ONTABE

Ontario

Wed 2/18

1:00 pm-10:52 pm

1 stop6h 52m

Allentown-Bethlehem

Sat 2/21

6:30 am-11:38 am

1 stop8h 08m

$428

OntarioAllentown

ONT - ABE

ONTABE

Ontario

Wed 2/18

7:00 am-5:01 pm

1 stop7h 01m

Allentown-Bethlehem

Sat 2/21

11:50 am-8:17 pm

2 stops11h 27m

$444

OntarioAllentown

ONT - ABE

ONTABE

Ontario

Wed 9/24

6:50 pm-10:38 am

2 stops12h 48m

Allentown-Bethlehem

Sat 10/4

1:00 pm-6:06 pm

1 stop8h 06m

$444

OntarioAllentown

ONT - ABE

ONTABE

Ontario

Sat 9/27

6:51 pm-10:38 am

2 stops12h 47m

Allentown-Bethlehem

Sat 10/11

1:00 pm-6:06 pm

1 stop8h 06m

$444

OntarioAllentown

ONT - ABE

ONTABE

Ontario

Tue 9/23

11:55 am-10:41 pm

1 stop7h 46m

Allentown-Bethlehem

Tue 10/7

6:00 pm-10:22 pm

1 stop7h 22m

$449

OntarioAllentown

ONT - ABE

ONTABE

Ontario

Wed 9/24

6:50 pm-10:38 am

2 stops12h 48m

Allentown-Bethlehem

Tue 9/30

1:00 pm-10:52 pm

2 stops12h 52m

$479

OntarioAllentown

ONT - ABE

ONTABE

Ontario

Tue 9/16

8:00 am-10:56 am

3 stops47h 56m

$288

OntarioAllentown

ONT - ABE

ONTABE

Ontario

Sat 2/21

1:00 pm-10:52 pm

1 stop6h 52m

$299

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 17 results
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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 $382). 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 September 11, 2025.
Read through reviews of airlines operating flights from Ontario to Allentown, such as Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

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
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

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.

  • How long is the flight from Ontario to Allentown?

    A quick flight from Ontario to Allentown can take about 7h 27m. Delta provides one of the quickest options available for as low as $339. The distance from Ontario to Allentown is about 2335 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly 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 $383 on this airline. You may be able to fly from Ontario to Allentown for 20% less than the average price by searching for this airline.

  • 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 $382). 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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Other flights to Allentown

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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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$383Average$498FlexibilityNo cancel feeOn-timeN/A

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