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Ontario

$299+ 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 7/29. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — ONT
Jul 18 — Jul 251
Sat 7/18
Sat 7/25
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 June 18, 2026.

This Delta deal was found by Cheapflights users on 6/17. 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.
Fri 10/301:00 pm
ABE
-
ONT
1 stop8h 18m
Delta
Wed 11/1110:59 pm
ONT
-
ABE
1 stop10h 05m
Delta
Deal found 6/17$359
This Delta deal was found by Cheapflights users on 6/17. 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.
Mon 11/21:00 pm
ABE
-
ONT
2 stops13h 48m
Delta
Tue 11/1010:59 pm
ONT
-
ABE
1 stop10h 05m
Delta
Deal found 6/17$364
This Delta deal was found by Cheapflights users on 6/17. 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 10/211:00 pm
ABE
-
ONT
1 stop8h 18m
Delta
Wed 10/2812:00 pm
ONT
-
ABE
1 stop7h 46m
Delta
Deal found 6/17$365
This Delta deal was found by Cheapflights users on 6/17. 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 10/316:30 am
ABE
-
ONT
1 stop7h 57m
Delta
Tue 11/1010:59 pm
ONT
-
ABE
1 stop10h 05m
Delta
Deal found 6/17$389
This Delta deal was found by Cheapflights users on 6/17. 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 10/211:00 pm
ABE
-
ONT
1 stop8h 18m
Delta
Mon 10/2610:59 pm
ONT
-
ABE
1 stop10h 05m
Delta
Deal found 6/17$407
This Delta deal was found by Cheapflights users on 6/17. 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.
Mon 11/21:00 pm
ABE
-
ONT
1 stop8h 18m
Delta
Wed 11/1110:59 pm
ONT
-
ABE
1 stop10h 05m
Delta
Deal found 6/17$418
This Delta deal was found by Cheapflights users on 6/17. 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 10/221:00 pm
ABE
-
ONT
1 stop8h 18m
Delta
Tue 10/2710:59 pm
ONT
-
ABE
1 stop10h 05m
Delta
Deal found 6/17$421
This Delta deal was found by Cheapflights users on 6/17. 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 10/221:00 pm
ABE
-
ONT
1 stop8h 18m
Delta
Thu 10/2912:00 pm
ONT
-
ABE
1 stop7h 46m
Delta
Deal found 6/17$463
This Delta deal was found by Cheapflights users on 6/17. 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.
Fri 10/231:00 pm
ABE
-
ONT
1 stop8h 18m
Delta
Wed 10/2810:59 pm
ONT
-
ABE
1 stop10h 05m
Delta
Deal found 6/17$472
This United Airlines deal was found by Cheapflights users on 6/17. 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 10/315:36 pm
ABE
-
ONT
1 stop7h 50m
United Airlines
Sat 11/76:53 pm
ONT
-
ABE
2 stops12h 13m
United Airlines
Deal found 6/17$474
This Delta deal was found by Cheapflights users on 6/17. 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 11/31:00 pm
ABE
-
ONT
2 stops13h 48m
Delta
Wed 11/116:00 am
ONT
-
ABE
2 stops13h 46m
Delta
Deal found 6/17$479
This Delta deal was found by Cheapflights users on 6/15. 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 7/91:08 pm
ABE
-
ONT
1 stop8h 22m
Delta
Sat 7/1112:00 pm
ONT
-
ABE
1 stop8h 08m
Delta
Deal found 6/15$509

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 June 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$359
(Delta)

One-way from

$299
(Delta)

Popular in

December

Cheapest in

November

Average price

$502
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
High demand for flights, 2% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 18, 2026.
Use the filters below to find and compare flights from Allentown to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Mon 11/2

1:00 pm-6:18 pm

1 stop8h 18m

Ontario

Wed 11/11

10:59 pm-12:04 pm

1 stop10h 05m

$418

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Sat 10/31

5:36 pm-10:26 pm

1 stop7h 50m

Ontario

Tue 11/10

6:53 pm-10:06 am

2 stops12h 13m

$474

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Sat 10/31

5:36 pm-10:26 pm

1 stop7h 50m

Ontario

Wed 11/11

6:53 pm-10:06 am

2 stops12h 13m

$474

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Sat 11/14

5:36 pm-10:26 pm

1 stop7h 50m

Ontario

Wed 11/18

6:53 pm-10:06 am

2 stops12h 13m

$543

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Tue 11/3

2:30 pm-11:06 pm

2 stops11h 36m

Ontario

Mon 11/9

6:53 pm-10:06 am

2 stops12h 13m

$549

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Fri 7/3

1:12 pm-6:30 pm

1 stop8h 18m

Ontario

Sun 7/5

11:50 am-11:08 pm

1 stop8h 18m

$574

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Tue 8/25

5:36 pm-10:35 pm

1 stop7h 59m

Ontario

Sat 8/29

11:00 am-9:57 am

2 stops19h 57m

$589
Quickest round-trip

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Wed 7/29

1:08 pm-6:30 pm

1 stop8h 22m

Ontario

Sat 8/1

7:05 am-5:25 pm

1 stop7h 20m

$607

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Thu 8/13

5:36 pm-10:35 pm

1 stop7h 59m

Ontario

Thu 8/20

7:13 pm-9:57 am

2 stops11h 44m

$657
Cheapest one-way

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Tue 6/23

1:12 pm-6:30 pm

1 stop8h 18m

$343

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

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 June.
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.

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 June 18, 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
7.8
Good
8,410 reviews

Entertainment

7.8

Boarding

8.1

Crew

8.5

Food

7.2

Comfort

7.8

Overall

7.8

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
7.8
Good
8,410 reviews
Delta
7.8
Good
8,410 reviews

Entertainment

7.8

Boarding

8.1

Crew

8.5

Food

7.2

Comfort

7.8

Overall

7.8

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 50m. Fly via Delta or United Airlines 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.

  • 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.

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 June 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$338Average$471FlexibilityNo cancel feeOn-timeN/A

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