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Allentown

$186+ 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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ABE
Feb 27 — Mar 61
Fri 2/27
Fri 3/6
1 adult, Economy
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Cheap 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 January 28, 2026.

This Delta deal was found by Cheapflights users on 1/27. 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.
Tue 3/1712:57 pm
ONT
-
ABE
1 stop6h 59m
Delta
Wed 3/256:32 am
ABE
-
ONT
1 stop8h 15m
Delta
Deal found 1/27$329
This Delta deal was found by Cheapflights users on 1/27. 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 3/1812:57 pm
ONT
-
ABE
1 stop6h 59m
Delta
Tue 3/246:32 am
ABE
-
ONT
1 stop8h 15m
Delta
Deal found 1/27$408
This Delta deal was found by Cheapflights users on 1/27. 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 3/1212:57 pm
ONT
-
ABE
1 stop6h 59m
Delta
Tue 3/176:32 am
ABE
-
ONT
1 stop8h 15m
Delta
Deal found 1/27$433
This Delta deal was found by Cheapflights users on 1/27. 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 3/1112:57 pm
ONT
-
ABE
1 stop6h 59m
Delta
Sun 3/156:32 am
ABE
-
ONT
1 stop8h 15m
Delta
Deal found 1/27$439
This Delta deal was found by Cheapflights users on 1/27. 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 3/1112:57 pm
ONT
-
ABE
1 stop6h 59m
Delta
Wed 3/186:32 am
ABE
-
ONT
1 stop8h 15m
Delta
Deal found 1/27$449
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Mon 3/911:59 pm
ONT
-
ABE
1 stop6h 57m
United Airlines
Tue 3/1710:31 am
ABE
-
ONT
2 stops13h 19m
United Airlines
Deal found 1/27$455
This United Airlines deal was found by Cheapflights users on 1/27. 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 3/116:37 pm
ONT
-
ABE
2 stops12h 19m
United Airlines
Tue 3/1710:31 am
ABE
-
ONT
2 stops13h 19m
United Airlines
Deal found 1/27$461
This Delta deal was found by Cheapflights users on 1/27. 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 3/1212:57 pm
ONT
-
ABE
1 stop6h 59m
Delta
Sat 3/146:32 am
ABE
-
ONT
1 stop8h 15m
Delta
Deal found 1/27$464
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Mon 3/911:59 pm
ONT
-
ABE
1 stop8h 41m
American Airlines
Tue 3/1712:45 pm
ABE
-
ONT
1 stop10h 00m
American Airlines
Deal found 1/27$471
This Delta deal was found by Cheapflights users on 1/27. 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 3/1212:57 pm
ONT
-
ABE
1 stop6h 59m
Delta
Wed 3/186:32 am
ABE
-
ONT
1 stop8h 15m
Delta
Deal found 1/27$474
This Delta deal was found by Cheapflights users on 1/27. 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.
Tue 3/1712:57 pm
ONT
-
ABE
1 stop6h 59m
Delta
Mon 3/236:32 am
ABE
-
ONT
1 stop8h 15m
Delta
Deal found 1/27$479

Find 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 January 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$329
(Delta)

One-way from

$186
(Delta)

Popular in

September

Cheapest in

November

Average price

$377
Provider with most accurate pricing for Ontario-Allentown-Bethlehem flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Allentown-Bethlehem flights.
Search Deals
From Ontario to Allentown-Bethlehem
Search Deals
One-way flight from Ontario to Allentown-Bethlehem
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($86 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 28, 2026.
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

Tue 3/17

12:57 pm-10:56 pm

1 stop6h 59m

Allentown-Bethlehem

Wed 3/25

6:32 am-11:47 am

1 stop8h 15m

$329

OntarioAllentown

ONT - ABE

ONTABE

Ontario

Wed 3/18

12:57 pm-10:56 pm

1 stop6h 59m

Allentown-Bethlehem

Wed 3/25

12:56 pm-9:00 pm

1 stop11h 04m

$408

OntarioAllentown

ONT - ABE

ONTABE

Ontario

Wed 3/11

12:57 pm-10:56 pm

1 stop6h 59m

Allentown-Bethlehem

Tue 3/17

6:32 am-11:47 am

1 stop8h 15m

$408

OntarioAllentown

ONT - ABE

ONTABE

Ontario

Thu 3/12

12:57 pm-10:56 pm

1 stop6h 59m

Allentown-Bethlehem

Tue 3/17

6:32 am-11:47 am

1 stop8h 15m

$433

OntarioAllentown

ONT - ABE

ONTABE

Ontario

Wed 3/11

12:57 pm-10:56 pm

1 stop6h 59m

Allentown-Bethlehem

Sat 3/14

6:32 am-11:47 am

1 stop8h 15m

$439

OntarioAllentown

ONT - ABE

ONTABE

Ontario

Wed 3/11

12:57 pm-10:56 pm

1 stop6h 59m

Allentown-Bethlehem

Wed 3/18

6:32 am-11:47 am

1 stop8h 15m

$449

OntarioAllentown

ONT - ABE

ONTABE

Ontario

Tue 3/10

11:59 pm-9:56 am

1 stop6h 57m

Allentown-Bethlehem

Wed 3/18

10:31 am-10:57 pm

2 stops15h 26m

$455

OntarioAllentown

ONT - ABE

ONTABE

Ontario

Tue 3/10

11:59 pm-9:56 am

1 stop6h 57m

Allentown-Bethlehem

Tue 3/17

10:31 am-8:50 pm

2 stops13h 19m

$455

OntarioAllentown

ONT - ABE

ONTABE

Ontario

Mon 3/9

11:59 pm-9:56 am

1 stop6h 57m

Allentown-Bethlehem

Tue 3/17

10:31 am-8:50 pm

2 stops13h 19m

$455

OntarioAllentown

ONT - ABE

ONTABE

Ontario

Thu 3/12

12:57 pm-10:56 pm

1 stop6h 59m

Allentown-Bethlehem

Sat 3/14

6:32 am-11:47 am

1 stop8h 15m

$464

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 24 results
1
2
3

Compare providers for flights from Ontario to Allentown

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Allentown in January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Allentown flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Allentown flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Allentown flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Allentown flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Allentown flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, June is the cheapest month in which you can book a flight from Ontario to Allentown (average of $78). Flying from Ontario to Allentown in July is currently the most expensive (average of $164). 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 January 28, 2026.
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
7.9
Good
8,123 reviews

Boarding

8.1

Food

7.2

Overall

7.9

Comfort

7.9

Crew

8.5

Entertainment

7.8

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
7.9
Good
8,123 reviews
Delta
7.9
Good
8,123 reviews

Boarding

8.1

Food

7.2

Overall

7.9

Comfort

7.9

Crew

8.5

Entertainment

7.8

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 6h 59m. Delta provides one of the quickest options available for as low as $329. The distance from Ontario to Allentown is about 2335 mi.

  • 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 $373 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, June is the cheapest month in which you can book a flight from Ontario to Allentown (average of $78). Flying from Ontario to Allentown in July is currently the most expensive (average of $164). 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 January 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$373Average$468FlexibilityNo cancel feeOn-timeN/A

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