In terms of precipitation, rainfall in Trenton, New Jersey ranges from 2.9 - 4.8 inches per month. July is typically the wettest month, when rainfall can reach 4.8 in. February is typically the driest time to visit Trenton, New Jersey when rainfall is around 2.9 in.

If weather is an important factor for your trip to Trenton, New Jersey, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

How far in advance should I book a flight from Ontario to Trenton, New Jersey?

Users have found that booking a flight from Ontario to Trenton, New Jersey at least 61 days early can save you up to 60% on average compared to booking a flight this week. If booking 61 days before your flight isn’t an option for you, users have found flights from Ontario to Trenton, New Jersey for as little as $353 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $618 for flights departing within the next 3 days.

What is the cheapest month to fly from Ontario to Trenton, New Jersey?

January can be a great time to fly to Trenton, New Jersey from Ontario with a flight ticket averaging about $341. Cheapflights users have found deals in the month of January for as cheap as $137. The most expensive prices can be found in the month of December.

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

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

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

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

How can I find direct flights from Ontario to Trenton?

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

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

Yes. Cheapflights offers flight deals from Ontario to Trenton by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$119+ Flights from Ontario to Trenton, NJ

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Cheap flight deals from Ontario to Trenton

Round-trip from	$236 (Frontier)
One-way from	$119 (Frontier)
Popular in	December
Cheapest in	January
Average price	$337

From Ontario to Trenton-Mercer

Search Deals

One-way flight from Ontario to Trenton-Mercer

Search Deals

Highest demand for flights based on searches. 6% potential increase in price ($24 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).

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Average for round-trip flights in August 2025

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Find flight deals from Ontario to Trenton

Cheapest flights from Ontario to Trenton
Explore the most affordable flight options available from Ontario to Trenton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 16, 2025.

Thu 9/43:43 pmONT - TTN

2 stops16h 51mFrontier

Sat 9/611:45 amTTN - ONT

2 stops22h 38mFrontier

Deal found 8/14

$236

Thu 10/27:30 pmONT - TTN

2 stops13h 04mFrontier

Mon 10/611:45 amTTN - ONT

2 stops13h 28mFrontier

Deal found 8/15

$243

Thu 9/183:43 pmONT - TTN

2 stops16h 51mFrontier

Mon 9/2212:30 pmTTN - ONT

2 stops14h 08mFrontier

Deal found 8/15

$245

Fri 9/197:30 pmONT - TTN

2 stops12h 30mFrontier

Mon 9/2212:30 pmTTN - ONT

2 stops14h 08mFrontier

Deal found 8/15

$288

Fri 9/124:08 pmONT - TTN

2 stops15h 52mFrontier

Mon 9/1512:30 pmTTN - ONT

2 stops14h 08mFrontier

Deal found 8/15

$318

Sun 9/143:43 pmONT - TTN

2 stops17h 32mFrontier

Sun 9/284:57 pmTTN - ONT

2 stops17h 56mFrontier

Deal found 8/15

$336

Fri 9/267:30 pmONT - TTN

2 stops12h 30mFrontier

Sun 9/284:57 pmTTN - ONT

2 stops17h 56mFrontier

Deal found 8/15

$374

Fri 8/1512:48 pmONT - TTN

2 stops16h 53mFrontier

Fri 8/2210:53 amTTN - ONT

2 stops15h 57mFrontier

Deal found 8/14

$392

Mon 8/1812:59 amONT - TTN

2 stops19h 57mFrontier

Sun 8/2411:20 amTTN - ONT

2 stops15h 20mFrontier

Deal found 8/15

$492

Best flights from Ontario to Trenton
Discover carefully curated flight deals from Ontario to Trenton that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 16, 2025.

Thu 9/43:43 pmONT - TTN

2 stops16h 51mFrontier

Sat 9/611:45 amTTN - ONT

2 stops22h 38mFrontier

Deal found 8/14

$236

Thu 10/27:30 pmONT - TTN

2 stops13h 04mFrontier

Mon 10/611:45 amTTN - ONT

2 stops13h 28mFrontier

Deal found 8/14

$243

Thu 9/183:43 pmONT - TTN

2 stops16h 51mFrontier

Mon 9/2212:30 pmTTN - ONT

2 stops14h 08mFrontier

Deal found 8/15

$245

Fri 9/197:30 pmONT - TTN

2 stops12h 30mFrontier

Mon 9/2212:30 pmTTN - ONT

2 stops14h 08mFrontier

Deal found 8/15

$288

Fri 9/124:08 pmONT - TTN

2 stops15h 52mFrontier

Mon 9/1512:30 pmTTN - ONT

2 stops14h 08mFrontier

Deal found 8/15

$318

Sun 9/143:43 pmONT - TTN

2 stops17h 32mFrontier

Sun 9/284:57 pmTTN - ONT

2 stops17h 56mFrontier

Deal found 8/15

$336

Fri 9/267:30 pmONT - TTN

2 stops12h 30mFrontier

Sun 9/284:57 pmTTN - ONT

2 stops17h 56mFrontier

Deal found 8/15

$374

Last-minute flights from Ontario to Trenton
Discover last-minute flight deals from Ontario to Trenton. Data last updated August 16, 2025 and is based on user searches.

Fri 8/1512:48 pmONT - TTN

2 stops16h 53mFrontier

Fri 8/2210:53 amTTN - ONT

2 stops15h 57mFrontier

Deal found 8/14

$392

Mon 8/1812:59 amONT - TTN

2 stops19h 57mFrontier

Sun 8/2411:20 amTTN - ONT

2 stops15h 20mFrontier

Deal found 8/15

$492

Thu 9/43:43 pmONT - TTN

2 stops16h 51mFrontier

Sat 9/611:45 amTTN - ONT

2 stops22h 38mFrontier

Deal found 8/14

$236

Fri 9/124:08 pmONT - TTN

2 stops15h 52mFrontier

Mon 9/1512:30 pmTTN - ONT

2 stops14h 08mFrontier

Deal found 8/15

$318

Sun 9/143:43 pmONT - TTN

2 stops17h 32mFrontier

Sun 9/284:57 pmTTN - ONT

2 stops17h 56mFrontier

Deal found 8/15

$336

Thu 9/183:43 pmONT - TTN

2 stops16h 51mFrontier

Mon 9/2212:30 pmTTN - ONT

2 stops14h 08mFrontier

Deal found 8/15

$245

Fri 9/197:30 pmONT - TTN

2 stops12h 30mFrontier

Mon 9/2212:30 pmTTN - ONT

2 stops14h 08mFrontier

Deal found 8/15

$288

Fri 9/267:30 pmONT - TTN

2 stops12h 30mFrontier

Sun 9/284:57 pmTTN - ONT

2 stops17h 56mFrontier

Deal found 8/15

$374

One-way flights from Ontario to Trenton
Search for one-way flight options from Ontario to Trenton. Find affordable one-way fares based on user searches. Data last updated August 16, 2025.

Thu 9/43:43 pmONT - TTN

2 stops16h 51mFrontier

Deal found 8/14

$119

Fri 10/318:24 amONT - TTN

2 stops12h 35mFrontier

Deal found 8/15

$120

Fri 9/54:08 pmONT - TTN

2 stops15h 52mFrontier

Deal found 8/14

$129

Tue 9/168:59 pmONT - TTN

2 stops33h 33mFrontier

Deal found 8/15

$130

Sat 10/258:34 amONT - TTN

2 stops22h 40mFrontier

Deal found 8/15

$131

Thu 8/215:09 pmONT - TTN

2 stops13h 59mFrontier

Deal found 8/14

$155

Sat 8/231:07 pmONT - TTN

2 stops18h 18mFrontier

Deal found 8/15

$158

Sat 8/2312:59 amONT - TTN

2 stops29h 15mFrontier

Deal found 8/15

$160

Fri 8/2210:13 pmONT - TTN

2 stops33h 12mFrontier

Deal found 8/14

$163

Sun 9/143:43 pmONT - TTN

2 stops16h 17mFrontier

Deal found 8/15

$164

Sat 10/188:34 amONT - TTN

2 stops22h 40mFrontier

Deal found 8/15

$168

Fly from

Fly to

Route

Depart

Return

Price

OntarioTrenton

ONT - TTN

ONTTTN

Ontario

Thu 9/4

3:43 pm-11:34 am

2 stops16h 51m

Trenton-Mercer

Sat 9/6

11:45 am-7:23 am

2 stops22h 38m

$236

OntarioTrenton

ONT - TTN

ONTTTN

Ontario

Thu 10/2

7:30 pm-11:34 am

2 stops13h 04m

Trenton-Mercer

Mon 10/6

11:45 am-10:13 pm

2 stops13h 28m

$243

OntarioTrenton

ONT - TTN

ONTTTN

Ontario

Thu 9/18

3:43 pm-11:34 am

2 stops16h 51m

Trenton-Mercer

Mon 9/22

12:30 pm-11:38 pm

2 stops14h 08m

$245

OntarioTrenton

ONT - TTN

ONTTTN

Ontario

Fri 9/19

7:30 pm-11:00 am

2 stops12h 30m

Trenton-Mercer

Mon 9/22

12:30 pm-11:38 pm

2 stops14h 08m

$288

OntarioTrenton

ONT - TTN

ONTTTN

Ontario

Fri 9/12

4:08 pm-11:00 am

2 stops15h 52m

Trenton-Mercer

Mon 9/15

12:30 pm-11:38 pm

2 stops14h 08m

$318

OntarioTrenton

ONT - TTN

ONTTTN

Ontario

Sun 9/14

3:43 pm-12:15 pm

2 stops17h 32m

Trenton-Mercer

Sun 9/28

4:57 pm-7:53 am

2 stops17h 56m

$336

OntarioTrenton

ONT - TTN

ONTTTN

Ontario

Fri 9/26

7:30 pm-11:00 am

2 stops12h 30m

Trenton-Mercer

Sun 9/28

4:57 pm-7:53 am

2 stops17h 56m

$374

OntarioTrenton

ONT - TTN

ONTTTN

Ontario

Sun 10/5

3:43 pm-11:34 am

2 stops16h 51m

$119

OntarioTrenton

ONT - TTN

ONTTTN

Ontario

Thu 9/18

3:43 pm-11:34 am

2 stops16h 51m

$119

OntarioTrenton

ONT - TTN

ONTTTN

Ontario

Thu 9/4

3:43 pm-11:34 am

2 stops16h 51m

$119

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 13 results

Best time to book a flight from Ontario to Trenton

Have a flexible travel schedule? Discover the best time to fly to Trenton 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 Trenton

What is the cheapest month to book a flight from Ontario to Trenton, New Jersey?

Currently, January is the cheapest month in which you can book a flight from Ontario to Trenton, New Jersey (average of $73). Flying from Ontario to Trenton, New Jersey in June is currently the most expensive (average of $153). 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.

Related info for your journey

Can I find deals for flights from Ontario to Trenton that include hotel bookings?
Yes. In addition to deals on Ontario to Trenton flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to Trenton?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Trenton.
Can I find deals for business class flights from Ontario to Trenton?
Yes. Cheapflights offers flight deals from Ontario to Trenton 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 Trenton, New Jersey?
Currently, January is the cheapest month in which you can book a flight from Ontario to Trenton, New Jersey (average of $73). Flying from Ontario to Trenton, New Jersey in June is currently the most expensive (average of $153). 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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$119+ Cheap flights from Ontario to Trenton, NJ (ONT - TTN)

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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Trenton with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Ontario to Trenton

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to Trenton

Cheapest flights from Ontario to TrentonExplore the most affordable flight options available from Ontario to Trenton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 16, 2025.

Explore the most affordable flight options available from Ontario to Trenton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 16, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Ontario to Trenton

Have a flexible travel schedule? Discover the best time to fly to Trenton from Ontario with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Trenton

What is the cheapest month to book a flight from Ontario to Trenton, New Jersey?

Related info for your journey

Find useful and relevant information for your journey from Ontario to Trenton. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

How can I find direct flights from Ontario to Trenton?

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

What is the cheapest month to book a flight from Ontario to Trenton, New Jersey?

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Cheapest flights from Ontario to Trenton
Explore the most affordable flight options available from Ontario to Trenton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 16, 2025.