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$184+ Cheap flights from Allentown to Ontario (ABE - ONT)

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 3/25. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — ONT
Mar 15 — Mar 221
Sun 3/15
Sun 3/22
1 adult, Economy
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Cheap flight deals from Allentown to Ontario

Cheapest flights from Allentown to Ontario
Explore the most affordable flight options available from Allentown to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 13, 2026.

This Delta deal was found by Cheapflights users on 2/9. 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 10/201:00 pm
ABE
-
ONT
1 stop8h 18m
Delta
Tue 10/2712:00 pm
ONT
-
ABE
1 stop7h 46m
Delta
Deal found 2/9$339
This United Airlines deal was found by Cheapflights users on 2/9. 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 5/15:35 pm
ABE
-
ONT
1 stop7h 55m
United Airlines
Tue 5/56:59 pm
ONT
-
ABE
2 stops11h 59m
United Airlines
Deal found 2/9$341
This Delta deal was found by Cheapflights users on 2/10. 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.
Thu 3/2612:56 pm
ABE
-
ONT
1 stop11h 04m
Delta
Wed 4/112:57 pm
ONT
-
ABE
1 stop6h 55m
Delta
Deal found 2/10$358
This United Airlines deal was found by Cheapflights users on 2/9. 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 4/155:38 pm
ABE
-
ONT
1 stop7h 48m
United Airlines
Wed 4/226:49 pm
ONT
-
ABE
2 stops12h 09m
United Airlines
Deal found 2/9$402
This United Airlines deal was found by Cheapflights users on 2/9. 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 5/135:35 pm
ABE
-
ONT
1 stop7h 55m
United Airlines
Mon 5/186:59 pm
ONT
-
ABE
2 stops11h 59m
United Airlines
Deal found 2/9$418
This Delta deal was found by Cheapflights users on 2/10. 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.
Tue 3/3112:56 pm
ABE
-
ONT
1 stop11h 04m
Delta
Wed 4/112:57 pm
ONT
-
ABE
1 stop6h 55m
Delta
Deal found 2/10$461
This United Airlines deal was found by Cheapflights users on 2/12. 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 3/410:36 am
ABE
-
ONT
2 stops15h 21m
United Airlines
Wed 3/1111:59 pm
ONT
-
ABE
1 stop6h 57m
United Airlines
Deal found 2/12$464

Find flight deals from Allentown to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Allentown (ABE) to Ontario (ONT). 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 February 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$341
(United Airlines)

One-way from

$184
(Delta)

Popular in

April

Cheapest in

October

Average price

$397
Provider with most accurate pricing for Allentown-Bethlehem-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Allentown-Bethlehem-Ontario flights.
Search Deals
From Allentown-Bethlehem to Ontario
Search Deals
One-way flight from Allentown-Bethlehem to Ontario
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($76 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($48 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Allentown to Ontario 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 February 13, 2026.
Use the filters below to find and compare flights from Allentown to Ontario that are best for you.

Fly from

Allentown

Fly to

Ontario

Route

Depart

Return

Price

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Fri 5/1

5:35 pm-10:30 pm

1 stop7h 55m

Ontario

Tue 5/5

6:59 pm-9:58 am

2 stops11h 59m

$341

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Thu 3/26

12:56 pm-9:00 pm

1 stop11h 04m

Ontario

Wed 4/1

12:57 pm-10:52 pm

1 stop6h 55m

$358

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Wed 4/15

5:38 pm-10:26 pm

1 stop7h 48m

Ontario

Wed 4/22

6:49 pm-9:58 am

2 stops12h 09m

$402

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Wed 3/4

10:36 am-10:57 pm

2 stops15h 21m

Ontario

Wed 3/11

11:59 pm-9:56 am

1 stop6h 57m

$464

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Thu 3/26

12:56 pm-9:00 pm

1 stop11h 04m

Ontario

Mon 3/30

12:57 pm-10:56 pm

1 stop6h 59m

$474

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Thu 3/26

12:56 pm-9:00 pm

1 stop11h 04m

Ontario

Fri 4/3

12:57 pm-10:52 pm

1 stop6h 55m

$474

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Wed 3/25

6:32 am-11:47 am

1 stop8h 15m

$184

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Sat 8/1

1:00 pm-6:15 pm

1 stop8h 15m

$224

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Sat 2/21

9:00 am-5:48 pm

3 stops59h 48m

$249

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Fri 4/24

5:38 pm-10:26 pm

1 stop7h 48m

$269

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/11

Showing 1-10 of 18 results
1
2

Compare providers for flights from Allentown to Ontario

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 Allentown to Ontario in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust 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 Allentown-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Allentown-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Allentown-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Allentown-Ontario 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 Allentown-Ontario 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 Allentown to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Allentown 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 Allentown to Ontario

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

Currently, May is the cheapest month in which you can book a flight from Allentown to Ontario (average of $88). Flying from Allentown to Ontario in December is currently the most expensive (average of $155). 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 Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated February 13, 2026.
See what other customers who have flown with Delta from Allentown to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,187 reviews

Boarding

8.1

Comfort

7.9

Overall

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
7.9
Good
8,187 reviews
Delta
7.9
Good
8,187 reviews

Boarding

8.1

Comfort

7.9

Overall

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Allentown to Ontario. 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 Allentown to Ontario?

    There are many flights that can get you from Allentown to Ontario in 7h 55m. Fly via United Airlines or Delta to get the fastest option. The distance between Allentown and Ontario is about 2335 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Allentown to Ontario round-trip?

    Cheapflights users have booked flights from Allentown to Ontario round-trip from $338. Delta is 42% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Allentown to Ontario 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 Allentown to Ontario?

    Currently, May is the cheapest month in which you can book a flight from Allentown to Ontario (average of $88). Flying from Allentown to Ontario in December is currently the most expensive (average of $155). 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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Alternative routes for Allentown to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Allentown to Ontario

Discover the top airline that operate flights from Allentown to Ontario. 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 February 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$338Average$532FlexibilityNo cancel feeOn-timeN/A

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