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$105+ Cheap flights from Trenton, NJ to Ontario (TTN - 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 1/23. Fares are subject to change and may not be available on all flights or dates of travel.
TTN — ONT
Dec 19 — Dec 261
Fri 12/19
Fri 12/26
1 adult, Economy
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Find flight deals from Trenton to Ontario

One-way flights from Trenton to Ontario
Search for one-way flight options from Trenton to Ontario. Find affordable one-way fares based on user searches. Data last updated November 19, 2025.

This Trip.com deal was found by Cheapflights users on 11/18. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/2311:56 amTTN - ONT
2 stops15h 24mFrontier
Deal found 11/18$105
This Trip.com deal was found by Cheapflights users on 11/18. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/116:00 amTTN - ONT
2 stops35h 54mFrontier
Deal found 11/18$125
This Trip.com deal was found by Cheapflights users on 11/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/258:10 amTTN - ONT
2 stops36h 51mFrontier
Deal found 11/19$132
This Trip.com deal was found by Cheapflights users on 11/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/229:59 pmTTN - ONT
2 stops51h 40mFrontier
Deal found 11/19$165

Cheap flight deals from Trenton to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Trenton (TTN) 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 November 19, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Popular in

December

Cheapest in

September

Average price

$385
Provider with most accurate pricing for Trenton-Mercer-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Trenton-Mercer-Ontario flights.
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($33 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Trenton 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 November 19, 2025.
Use the filters below to find and compare flights from Trenton to Ontario that are best for you.

Fly from

Trenton

Fly to

Ontario

Route

Depart

Return

Price

TrentonOntario

TTN - ONT

TTNONT

Trenton-Mercer

Fri 1/23

11:56 am-12:20 am

2 stops15h 24m

$105

TrentonOntario

TTN - ONT

TTNONT

Trenton-Mercer

Sun 1/11

6:00 am-2:54 pm

2 stops35h 54m

$125

TrentonOntario

TTN - ONT

TTNONT

Trenton-Mercer

Wed 2/25

8:10 am-6:01 pm

2 stops36h 51m

$132

TrentonOntario

TTN - ONT

TTNONT

Trenton-Mercer

Sun 2/22

9:59 pm-10:39 pm

2 stops51h 40m

$165

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/18

Compare providers for flights from Trenton 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 Trenton to Ontario in November.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy2 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 Trenton, New Jersey-Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Trenton, New Jersey-Ontario flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Trenton, New Jersey-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Trenton, New Jersey-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 Trenton, New Jersey-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 Trenton to Ontario

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

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

Currently, May is the cheapest month in which you can book a flight from Trenton, New Jersey to Ontario (average of $88). Flying from Trenton, New Jersey 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.

Related info for your journey

Find useful and relevant information for your journey from Trenton to Ontario. 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 Trenton to Ontario that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Trenton 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 Trenton, New Jersey to Ontario?

    Currently, May is the cheapest month in which you can book a flight from Trenton, New Jersey to Ontario (average of $88). Flying from Trenton, New Jersey 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

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