In terms of precipitation, rainfall in San Antonio ranges from 1.6 - 3.7 inches per month. May is typically the wettest month, when rainfall can reach 3.7 in. December is typically the driest time to visit San Antonio when rainfall is around 1.6 in.

If weather is an important factor for your trip to San Antonio, 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 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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

To save on the cost of your flight from Trenton, New Jersey to San Antonio, book at least 50 days before your planned departure. Booking around this time can save you about 49% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $372 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $551.

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

Our data shows that September tends to be the cheapest month to fly to San Antonio from Trenton, New Jersey. Users have commonly found prices around $369 for the month, but tickets can be as low as $90. Due to multiple factors, prepare for potentially higher prices in December.

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

When flying from Trenton, New Jersey to San Antonio, 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 Trenton to San Antonio that include hotel bookings?

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

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

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

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

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

$129+ Flights from Trenton, NJ to San Antonio

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Cheap flight deals from Trenton to San Antonio

Round-trip from	$267 (Mytrip)
One-way from	$129 (Frontier)
Popular in	December
Cheapest in	September
Average price	$248

From Trenton-Mercer to San Antonio

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One-way flight from Trenton-Mercer to San Antonio

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Highest demand for flights based on searches. 12% potential increase in price ($55 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($13 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 Trenton to San Antonio

Cheapest flights from Trenton to San Antonio
Explore the most affordable flight options available from Trenton to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2025.

Thu 8/145:15 pmTTN - SAT

1 stop17h 15mFrontier

Mon 8/189:00 amSAT - TTN

1 stop13h 59mFrontier

Deal found 7/31

$267

Best flights from Trenton to San Antonio
Discover carefully curated flight deals from Trenton to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 1, 2025.

Thu 8/145:15 pmTTN - SAT

1 stop17h 15mFrontier

Mon 8/189:00 amSAT - TTN

1 stop13h 59mFrontier

Deal found 7/31

$267

Last-minute flights from Trenton to San Antonio
Discover last-minute flight deals from Trenton to San Antonio. Data last updated August 1, 2025 and is based on user searches.

Thu 8/76:45 amTTN - SAT

1 stop27h 45mFrontier

Fri 8/1510:16 amSAT - TTN

1 stop12h 43mFrontier

Deal found 8/1

$295

Thu 8/145:15 pmTTN - SAT

1 stop17h 15mFrontier

Mon 8/189:00 amSAT - TTN

1 stop13h 59mFrontier

Deal found 7/31

$267

One-way flights from Trenton to San Antonio
Search for one-way flight options from Trenton to San Antonio. Find affordable one-way fares based on user searches. Data last updated August 1, 2025.

Mon 8/259:59 amTTN - SAT

1 stop7h 43mFrontier

Deal found 7/31

$129

Thu 8/286:00 amTTN - SAT

1 stop10h 45mMultiple Airlines

Deal found 7/31

$192

Fly from

Fly to

Route

Depart

Return

Price

TrentonSan Antonio

TTN - SAT

TTNSAT

Trenton-Mercer

Thu 8/14

5:15 pm-9:30 am

1 stop17h 15m

San Antonio

Mon 8/18

9:00 am-11:59 pm

1 stop13h 59m

$267

TrentonSan Antonio

TTN - SAT

TTNSAT

Trenton-Mercer

Mon 8/25

9:59 am-4:42 pm

1 stop7h 43m

$129

TrentonSan Antonio

TTN - SAT

TTNSAT

Trenton-Mercer

Thu 8/28

6:00 am-3:45 pm

1 stop10h 45m

$192

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Best time to book a flight from Trenton to San Antonio

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

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

Currently, August is the cheapest month in which you can book a flight from Trenton, New Jersey to San Antonio (average of $295). Flying from Trenton, New Jersey to San Antonio in March is currently the most expensive (average of $376). 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 San Antonio

Peruse reviews from past customers who have flown with Frontier from Trenton to San Antonio to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Frontier

5.9

Fair

3,241 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Jun 2025

TTN - TPA

TTN is a small airport for Frontier. Drop off is easy as is parking. The location is remote so there is zero traffic. The place could use a renovation but for the price you pay it is not necessary. Good-Staff is very friendly. Flight left on time. Bad- run down, deplaning/boarding on the tarmac. I got wet on the stairs outside of the plane while waiting to board.

Frontier

5.9

Fair

3,241 reviews

Frontier

5.9

Fair

3,241 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Jun 2025

TTN - TPA

Related info for your journey

Can I find deals for flights from Trenton to San Antonio that include hotel bookings?
Yes. In addition to deals on Trenton to San Antonio flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Trenton to San Antonio?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Trenton to San Antonio.
Can I find deals for business class flights from Trenton to San Antonio?
Yes. Cheapflights offers flight deals from Trenton to San Antonio 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 San Antonio?
Currently, August is the cheapest month in which you can book a flight from Trenton, New Jersey to San Antonio (average of $295). Flying from Trenton, New Jersey to San Antonio in March is currently the most expensive (average of $376). 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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$129+ Cheap flights from Trenton, NJ to San Antonio (TTN - SAT)

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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Trenton to San Antonio with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Trenton to San Antonio

Round-trip from

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Popular in

Cheapest in

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Find flight deals from Trenton to San Antonio

Cheapest flights from Trenton to San AntonioExplore the most affordable flight options available from Trenton to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2025.

Explore the most affordable flight options available from Trenton to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Trenton to San Antonio

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

Cheapflights Insights

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

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

Reviews of airlines servicing San Antonio

Peruse reviews from past customers who have flown with Frontier from Trenton to San Antonio to help guide your decision. You can also see how each airline stacks up 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 Trenton to San Antonio. 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 San Antonio that include hotel bookings?

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

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

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

Traveling to a place near San Antonio?

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Alternative routes for Trenton to San Antonio

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Cheapest flights from Trenton to San Antonio
Explore the most affordable flight options available from Trenton to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2025.