How long is the flight from Allentown to Ontario?

There are many flights that can get you from Allentown to Ontario in 7h 59m. 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. Delta is 45% cheaper than the average price of flights available within the next 90 days to this destination.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

What is the cheapest time of day to fly from ABE to ONT?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Allentown to Ontario as you normally would.

Most accurate provider : When it comes to deals on Allentown-Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Allentown-Ontario flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

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.

$205+ Flights from Allentown to Ontario

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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 December 28, 2025.

Mon 12/2912:49 pmABE - ONT

1 stop10h 01mDelta

Thu 1/812:41 pmONT - ABE

1 stop7h 09mDelta

Deal found 12/26

$529

Sun 12/285:07 pmABE - ONT

1 stop8h 18mUnited Airlines

Fri 1/96:39 pmONT - ABE

2 stops13h 02mUnited Airlines

Deal found 12/26

$584

Sun 12/286:04 pmABE - ONT

1 stop8h 19mDelta

Thu 1/812:41 pmONT - ABE

1 stop7h 09mDelta

Deal found 12/26

$604

Tue 12/306:25 amABE - ONT

2 stops12h 47mDelta

Thu 1/812:41 pmONT - ABE

1 stop7h 09mDelta

Deal found 12/26

$609

Mon 12/2912:49 pmABE - ONT

1 stop10h 01mDelta

Wed 1/712:41 pmONT - ABE

1 stop7h 09mDelta

Deal found 12/26

$628

Sun 12/286:04 pmABE - ONT

1 stop8h 19mDelta

Wed 1/712:41 pmONT - ABE

1 stop7h 09mDelta

Deal found 12/26

$703

Tue 12/306:25 amABE - ONT

2 stops12h 47mDelta

Wed 1/712:41 pmONT - ABE

1 stop7h 09mDelta

Deal found 12/26

$708

Mon 12/2912:49 pmABE - ONT

1 stop10h 01mDelta

Fri 1/912:41 pmONT - ABE

1 stop7h 09mDelta

Deal found 12/26

$724

Best flights from Allentown to Ontario
Discover carefully curated flight deals from Allentown to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 28, 2025.

Wed 4/1512:47 pmABE - ONT

1 stop8h 41mDelta

Wed 4/2212:39 pmONT - ABE

1 stop7h 20mDelta

Deal found 12/26

$329

Wed 3/185:26 pmABE - ONT

1 stop7h 59mUnited Airlines

Wed 3/2511:59 pmONT - ABE

1 stop6h 57mUnited Airlines

Deal found 12/28

$329

Mon 1/261:02 pmABE - ONT

2 stops12h 46mAmerican Airlines

Sun 2/111:59 pmONT - ABE

2 stops9h 33mAmerican Airlines

Deal found 12/26

$437

Wed 4/1510:35 amABE - ONT

2 stops13h 01mUnited Airlines

Wed 4/226:49 pmONT - ABE

2 stops12h 09mUnited Airlines

Deal found 12/26

$469

Sun 1/116:28 amABE - ONT

1 stop8h 03mDelta

Thu 1/1512:41 pmONT - ABE

1 stop7h 09mDelta

Deal found 12/27

$557

Sun 1/111:02 pmABE - ONT

2 stops12h 46mAmerican Airlines

Thu 1/159:59 amONT - ABE

2 stops9h 27mAmerican Airlines

Deal found 12/27

$567

Sat 1/3111:30 amABE - ONT

2 stops14h 23mUnited Airlines

Wed 2/46:00 amONT - ABE

2 stops25h 41mUnited Airlines

Deal found 12/27

$538

Wed 4/295:38 pmABE - ONT

1 stop7h 48mUnited Airlines

Sun 5/37:00 amONT - ABE

1 stop7h 01mUnited Airlines

Deal found 12/26

$608

Last-minute flights from Allentown to Ontario
Discover last-minute flight deals from Allentown to Ontario. Data last updated December 28, 2025 and is based on user searches.

Sun 12/285:07 pmABE - ONT

1 stop8h 18mUnited Airlines

Fri 1/96:39 pmONT - ABE

2 stops13h 02mUnited Airlines

Deal found 12/26

$584

Sun 12/286:04 pmABE - ONT

1 stop8h 19mDelta

Thu 1/812:41 pmONT - ABE

1 stop7h 09mDelta

Deal found 12/26

$604

Mon 12/2912:49 pmABE - ONT

1 stop10h 01mDelta

Thu 1/812:41 pmONT - ABE

1 stop7h 09mDelta

Deal found 12/26

$529

Mon 12/2912:49 pmABE - ONT

1 stop10h 01mDelta

Wed 1/712:41 pmONT - ABE

1 stop7h 09mDelta

Deal found 12/26

$628

Tue 12/306:25 amABE - ONT

2 stops12h 47mDelta

Thu 1/812:41 pmONT - ABE

1 stop7h 09mDelta

Deal found 12/26

$609

Fri 1/22:30 pmABE - ONT

1 stop10h 55mUnited Airlines

Mon 1/511:59 pmONT - ABE

1 stop7h 42mUnited Airlines

Deal found 12/27

$629

Sun 1/116:28 amABE - ONT

1 stop8h 03mDelta

Thu 1/1512:41 pmONT - ABE

1 stop7h 09mDelta

Deal found 12/27

$557

Sun 1/111:02 pmABE - ONT

2 stops12h 46mAmerican Airlines

Thu 1/159:59 amONT - ABE

2 stops9h 27mAmerican Airlines

Deal found 12/27

$567

Tue 1/2011:30 amABE - ONT

2 stops12h 28mUnited Airlines

Sat 1/315:05 amONT - ABE

2 stops13h 00mUnited Airlines

Deal found 12/27

$425

Mon 1/261:02 pmABE - ONT

2 stops12h 46mAmerican Airlines

Sun 2/111:59 pmONT - ABE

2 stops9h 33mAmerican Airlines

Deal found 12/26

$437

Sat 1/3111:30 amABE - ONT

2 stops14h 23mUnited Airlines

Wed 2/46:00 amONT - ABE

2 stops25h 41mUnited Airlines

Deal found 12/25

$538

One-way flights from Allentown to Ontario
Search for one-way flight options from Allentown to Ontario. Find affordable one-way fares based on user searches. Data last updated December 28, 2025.

Wed 4/296:25 amABE - ONT

1 stop8h 04mDelta

Deal found 12/27

$205

Sat 3/216:32 amABE - ONT

1 stop8h 08mDelta

Deal found 12/27

$290

Thu 4/306:25 amABE - ONT

1 stop8h 04mDelta

Deal found 12/27

$320

Tue 1/1311:30 amABE - ONT

2 stops12h 28mUnited Airlines

Deal found 12/27

$334

Wed 1/76:28 amABE - ONT

1 stop8h 03mDelta

Deal found 12/27

$385

Mon 1/52:00 pmABE - ONT

1 stop10h 05mDelta

Deal found 12/27

$416

Tue 1/611:30 amABE - ONT

2 stops12h 28mUnited Airlines

Deal found 12/27

$440

Tue 1/66:28 amABE - ONT

1 stop8h 03mDelta

Deal found 12/27

$449

Fri 1/26:04 pmABE - ONT

1 stop8h 19mDelta

Deal found 12/26

$456

Thu 2/126:28 amABE - ONT

1 stop8h 34mDelta

Deal found 12/26

$460

Sat 1/32:30 pmABE - ONT

1 stop10h 55mUnited Airlines

Deal found 12/27

$466

Find flight deals from Allentown to Ontario

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$329 (Delta)
One-way from	$205 (Delta)
Popular in	June
Cheapest in	October
Average price	$532

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 ($251 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 December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Wed 4/15

12:47 pm-6:28 pm

1 stop8h 41m

Ontario

Wed 4/22

12:39 pm-10:59 pm

1 stop7h 20m

$329

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Wed 3/18

5:26 pm-10:25 pm

1 stop7h 59m

Ontario

Wed 3/25

11:59 pm-9:56 am

1 stop6h 57m

$329

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Mon 1/26

1:02 pm-10:48 pm

2 stops12h 46m

Ontario

Sun 2/1

11:59 pm-12:32 pm

2 stops9h 33m

$437

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Wed 4/15

10:35 am-8:36 pm

2 stops13h 01m

Ontario

Wed 4/22

6:49 pm-9:58 am

2 stops12h 09m

$469

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Sat 1/31

11:30 am-10:53 pm

2 stops14h 23m

Ontario

Wed 2/4

6:00 am-10:41 am

2 stops25h 41m

$538

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Sun 1/11

6:28 am-11:31 am

1 stop8h 03m

Ontario

Thu 1/15

12:41 pm-10:50 pm

1 stop7h 09m

$557

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Sun 1/11

1:02 pm-10:48 pm

2 stops12h 46m

Ontario

Thu 1/15

9:59 am-10:26 pm

2 stops9h 27m

$567

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Wed 4/29

5:38 pm-10:26 pm

1 stop7h 48m

Ontario

Sun 5/3

7:00 am-5:01 pm

1 stop7h 01m

$608

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Wed 4/29

6:25 am-11:29 am

1 stop8h 04m

$205

AllentownOntario

ABE - ONT

ABEONT

Allentown-Bethlehem

Thu 4/2

6:32 am-11:40 am

1 stop8h 08m

$290

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/27

Showing 1-10 of 17 results

Compare providers for flights from Allentown to Ontario

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Allentown to Ontario in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Allentown-Ontario flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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, December is the cheapest month in which you can book a flight from Allentown to Ontario (average of $84). Flying from Allentown to Ontario in July is currently the most expensive (average of $141). 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

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

8,019 reviews

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

8,019 reviews

Delta

7.9

Good

8,019 reviews

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

How long is the flight from Allentown to Ontario?
There are many flights that can get you from Allentown to Ontario in 7h 59m. 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. 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, December is the cheapest month in which you can book a flight from Allentown to Ontario (average of $84). Flying from Allentown to Ontario in July is currently the most expensive (average of $141). 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

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Other flights to Ontario

Top airline flying from Allentown to Ontario

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$338	Average$558	FlexibilityNo cancel fee	On-timeN/A

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$205+ 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 4/29. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Allentown to Ontario with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Allentown to Ontario

Cheapest flights from Allentown to OntarioExplore 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 December 28, 2025.

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 December 28, 2025.

Find flight deals from Allentown to Ontario

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Allentown to Ontario that are best for you.

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 December.

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.

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?

Reviews of airlines servicing Ontario

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.

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?

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

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

How can I find direct flights from Allentown to Ontario?

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

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

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.

Top airline flying from Allentown to Ontario

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Travel Smart

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 December 28, 2025.