HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
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 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — ONT
Oct 29 — Nov 51
Wed 10/29
Wed 11/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Allentown to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 September 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$314
(Delta)

One-way from

$299
(Delta)

Popular in

June

Cheapest in

January

Average price

$498
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. 28% potential increase in price ($252 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease ($60 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find 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 September 29, 2025.

This Delta deal was found by Cheapflights users on 9/28. 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 11/156:10 amABE - ONT
1 stop7h 56mDelta
Tue 11/186:00 amONT - ABE
2 stops13h 12mDelta
Deal found 9/28$314
This United Airlines deal was found by Cheapflights users on 9/27. 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.
Sun 11/235:22 pmABE - ONT
1 stop8h 09mUnited Airlines
Sat 11/297:00 amONT - ABE
1 stop6h 47mUnited Airlines
Deal found 9/27$640
This Delta deal was found by Cheapflights users on 9/27. 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.
Sun 11/236:00 pmABE - ONT
1 stop8h 04mDelta
Fri 11/287:05 amONT - ABE
1 stop11h 21mDelta
Deal found 9/27$648
This United Airlines deal was found by Cheapflights users on 9/27. 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 11/125:22 pmABE - ONT
1 stop8h 09mUnited Airlines
Mon 11/177:00 amONT - ABE
1 stop25h 48mUnited Airlines
Deal found 9/27$706
This United Airlines deal was found by Cheapflights users on 9/28. 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 10/15:28 pmABE - ONT
1 stop8h 02mUnited Airlines
Sun 10/197:02 amONT - ABE
1 stop6h 51mUnited Airlines
Deal found 9/28$757
This Delta deal was found by Cheapflights users on 9/28. 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 12/266:04 pmABE - ONT
1 stop8h 19mDelta
Sat 1/311:15 amONT - ABE
1 stop8h 31mDelta
Deal found 9/28$837
This United Airlines deal was found by Cheapflights users on 9/29. 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.
Sun 10/55:28 pmABE - ONT
1 stop8h 02mUnited Airlines
Tue 10/77:02 amONT - ABE
1 stop6h 51mUnited Airlines
Deal found 9/29$860
This Delta deal was found by Cheapflights users on 9/26. 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.
Sun 12/215:57 pmABE - ONT
1 stop8h 02mDelta
Sat 12/277:05 amONT - ABE
1 stop7h 11mDelta
Deal found 9/26$903

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 September 29, 2025.
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

Sat 11/15

6:10 am-11:06 am

1 stop7h 56m

Ontario

Tue 11/18

6:00 am-10:12 pm

2 stops13h 12m

$314

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Tue 1/13

11:30 am-10:53 pm

2 stops14h 23m

Ontario

Sat 1/17

5:05 am-9:15 pm

2 stops13h 10m

$494

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Mon 1/5

2:30 pm-10:25 pm

1 stop10h 55m

Ontario

Mon 1/12

6:00 am-4:22 pm

2 stops31h 22m

$631

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Sun 11/23

5:22 pm-10:31 pm

1 stop8h 09m

Ontario

Sat 11/29

7:00 am-4:47 pm

1 stop6h 47m

$640

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Sat 3/14

1:00 pm-9:14 pm

1 stop11h 14m

$299

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Tue 11/11

6:00 pm-11:04 pm

1 stop8h 04m

$299

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Fri 3/13

6:30 am-11:38 am

1 stop8h 08m

$329

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Thu 11/13

6:00 pm-11:04 pm

1 stop8h 04m

$330

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Sun 11/9

6:10 am-11:06 am

1 stop7h 56m

$330

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Wed 10/8

6:00 am-10:26 am

1 stop7h 26m

$365

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/27

Showing 1-10 of 14 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 September.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice 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, August is the cheapest month in which you can book a flight from Allentown to Ontario (average of $246). Flying from Allentown to Ontario in March is currently the most expensive (average of $327). 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 September 29, 2025.
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
8.0
Very good
7,964 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

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
8.0
Very good
7,964 reviews
Delta
8.0
Very good
7,964 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

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 56m. Fly via Delta to get the fastest option. The distance between Allentown and Ontario is about 2335 mi.

  • 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 45% 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, August is the cheapest month in which you can book a flight from Allentown to Ontario (average of $246). Flying from Allentown to Ontario in March is currently the most expensive (average of $327). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Allentown to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Los Angeles flights
John F Kennedy Intl to Las Vegas flights
Newark to Las Vegas flights
Newark to San Francisco flights
John F Kennedy Intl to San Francisco flights
Newark to Los Angeles flights
Dulles Intl to Las Vegas flights
LaGuardia to Los Angeles flights
LaGuardia to Las Vegas flights
Reagan-National to Las Vegas flights
Reagan-National to Los Angeles flights
John F Kennedy Intl to San Diego flights
Reagan-National to San Francisco flights
Philadelphia to Las Vegas flights
Dulles Intl to Los Angeles flights
LaGuardia to San Francisco flights
Newark to San Diego flights
Dulles Intl to San Francisco flights
John F Kennedy Intl to Ontario flights
Newark to Santa Ana flights
Newark to Burbank flights
Dulles Intl to San Diego flights
Philadelphia to Los Angeles flights
Philadelphia to San Francisco flights
LaGuardia to Burbank flights
Newark to Ontario flights
LaGuardia to San Diego flights
LaGuardia to Santa Ana flights
John F Kennedy Intl to Santa Ana flights
Reagan-National to San Diego flights
Pittsburgh to Las Vegas flights
Newark to San Jose flights
Philadelphia to San Diego flights
LaGuardia to Ontario flights
Dulles Intl to Ontario flights
Newark to Sacramento flights
Newark to Oakland flights
John F Kennedy Intl to San Jose flights
Reagan-National to Ontario flights
Dulles Intl to San Jose flights
Philadelphia to Ontario flights
Newark to Palm Springs flights
Philadelphia to Santa Ana flights
John F Kennedy Intl to Sacramento flights
John F Kennedy Intl to Oakland flights
Dulles Intl to Santa Ana flights
Pittsburgh to Los Angeles flights
Reagan-National to San Jose flights
Pittsburgh to Santa Ana flights
John F Kennedy Intl to Long Beach flights

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 September 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$338Average$583FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.