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 San Diego to Trenton, New Jersey?

Travelers have found it’s best to book a flight 29 days in advance to save up to 72% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 29 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from San Diego to Trenton, New Jersey 1-2 weeks in advance for as low as $411, or $646 for flights within the next 24 hours.

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

The best pricing can be found in the month of January. Prices to Trenton, New Jersey from San Diego average $341. You can even find prices in January for less than $341, as users have found deals to Trenton, New Jersey from as low as $139. The month of December appears to be one of the more expensive times to travel to Trenton, New Jersey from San Diego. Flying in the targeted month can save you up to 26%.

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

When flying from San Diego to Trenton, New Jersey, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

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

How can I find direct flights from San Diego to Trenton?

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

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

Yes. Cheapflights offers flight deals from San Diego 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.

$170+ Flights from San Diego to Trenton, NJ

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Cheap flight deals from San Diego to Trenton

Popular in	December
Cheapest in	January
Average price	$377

Highest demand for flights based on searches. 2% potential increase in price ($8 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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One-way flights from San Diego to Trenton
Search for one-way flight options from San Diego to Trenton. Find affordable one-way fares based on user searches. Data last updated July 29, 2025.

Wed 9/246:15 amSAN - TTN

2 stops25h 45mMultiple Airlines

Deal found 7/27

$170

Fly from

Fly to

Route

Depart

Return

Price

San DiegoTrenton

SAN - TTN

SANTTN

San Diego

Wed 9/24

6:15 am-11:00 am

2 stops25h 45m

$170

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Best time to book a flight from San Diego to Trenton

Have a flexible travel schedule? Discover the best time to fly to Trenton from San Diego 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.

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Everything you need to know about your flight from San Diego to Trenton

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

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

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$170+ Cheap flights from San Diego to Trenton, NJ (SAN - 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 9/24. Fares are subject to change and may not be available on all flights or dates of travel.

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One-way flights from San Diego to TrentonSearch for one-way flight options from San Diego to Trenton. Find affordable one-way fares based on user searches. Data last updated July 29, 2025.

Search for one-way flight options from San Diego to Trenton. Find affordable one-way fares based on user searches. Data last updated July 29, 2025.

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Best time to book a flight from San Diego to Trenton

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

Cheapflights Insights

Everything you need to know about your flight from San Diego to Trenton

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

Related info for your journey

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

How can I find direct flights from San Diego to Trenton?

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

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

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One-way flights from San Diego to Trenton
Search for one-way flight options from San Diego to Trenton. Find affordable one-way fares based on user searches. Data last updated July 29, 2025.