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$143+ Cheap flights from Trenton, NJ (TTN) to San José (SJO)

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 4/10. Fares are subject to change and may not be available on all flights or dates of travel.
TTN — SJO
Apr 6 — Apr 131
Mon 4/6
Mon 4/13
1 adult, Economy
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Cheap flight deals from Trenton to San José

Cheapest flights from Trenton to San José
Explore the most affordable flight options available from Trenton to San José. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 7, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/197:15 pm
TTN
-
SJO
1 stop17h 59m
Multiple Airlines
Wed 3/2511:38 am
SJO
-
TTN
2 stops28h 47m
Multiple Airlines
Deal found 3/4$475
This Kiwi.com deal was found by Cheapflights users on 3/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/103:04 pm
TTN
-
SJO
1 stop21h 38m
Multiple Airlines
Sat 4/188:46 am
SJO
-
TTN
2 stops31h 39m
Multiple Airlines
Deal found 3/2$525
This Kiwi.com deal was found by Cheapflights users on 3/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/273:04 pm
TTN
-
SJO
2 stops22h 10m
Multiple Airlines
Tue 3/3111:38 am
SJO
-
TTN
1 stop21h 58m
Multiple Airlines
Deal found 3/5$1,138
This Frontier deal was found by Cheapflights users on 3/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/46:41 pm
TTN
-
SJO
2 stops19h 31m
Frontier
Sat 4/1110:06 am
SJO
-
TTN
1 stop11h 33m
Frontier
Deal found 3/2$1,197

Find flight deals from Trenton to San José

Discover tips and strategies to find the most affordable flight options for your journey from Trenton (TTN) to San José (SJO). 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 March 7, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$475
(Kiwi.com)

One-way from

$143
(Orbitz)

Popular in

December

Cheapest in

October

Average price

$438
Provider with most accurate pricing for Trenton-Mercer-San José Juan Santamaria Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Trenton-Mercer-San José Juan Santamaria Intl flights.
Search Deals
From Trenton-Mercer to San José Juan Santamaria Intl
Search Deals
One-way flight from Trenton-Mercer to San José Juan Santamaria Intl
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($31 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Trenton to San José 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 March 7, 2026.
Use the filters below to find and compare flights from Trenton to San José that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TrentonSan José

TTN - SJO

TTNSJO

Trenton-Mercer

Thu 3/19

7:15 pm-11:14 am

1 stop17h 59m

San José Juan Santamaria Intl

Wed 3/25

11:38 am-6:25 pm

2 stops28h 47m

$475

TrentonSan José

TTN - SJO

TTNSJO

Trenton-Mercer

Fri 4/10

3:04 pm-10:42 am

1 stop21h 38m

San José Juan Santamaria Intl

Sat 4/18

5:25 pm-6:25 pm

3 stops23h 00m

$667

TrentonSan José

TTN - SJO

TTNSJO

Trenton-Mercer

Fri 3/27

3:04 pm-11:14 am

2 stops22h 10m

San José Juan Santamaria Intl

Tue 3/31

11:38 am-11:36 am

1 stop21h 58m

$1,138
Quickest round-trip

TrentonSan José

TTN - SJO

TTNSJO

Trenton-Mercer

Sat 4/4

6:41 pm-12:12 pm

2 stops19h 31m

San José Juan Santamaria Intl

Sat 4/11

10:06 am-11:39 pm

1 stop11h 33m

$1,197
Cheapest one-way

TrentonSan José

TTN - SJO

TTNSJO

Trenton-Mercer

Fri 4/10

3:04 pm-9:01 am

1 stop19h 57m

$143

TrentonSan José

TTN - SJO

TTNSJO

Trenton-Mercer

Sat 5/23

7:15 pm-8:45 am

1 stop15h 30m

$158

TrentonSan José

TTN - SJO

TTNSJO

Trenton-Mercer

Sun 5/24

7:15 pm-8:45 am

1 stop15h 30m

$158

TrentonSan José

TTN - SJO

TTNSJO

Trenton-Mercer

Mon 3/23

11:48 am-11:14 am

2 stops25h 26m

$172
Quickest one-way

TrentonSan José

TTN - SJO

TTNSJO

Trenton-Mercer

Tue 3/31

6:00 am-3:06 pm

1 stop11h 06m

$287

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/6

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on Trenton, New Jersey-San José flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Trenton, New Jersey-San José flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Trenton, New Jersey-San José flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Trenton, New Jersey-San José flights, Cheapflights users trust FlightHub the most. FlightHub 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-San José 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 San José

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

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

Currently, December is the cheapest month in which you can book a flight from Trenton, New Jersey to San José (average of $173). Flying from Trenton, New Jersey to San José in May is currently the most expensive (average of $238). 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 San José. 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 José that include hotel bookings?

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

  • How can I find direct flights from Trenton to San José?

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

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

    Yes. Cheapflights offers flight deals from Trenton to San José 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 José?

    Currently, December is the cheapest month in which you can book a flight from Trenton, New Jersey to San José (average of $173). Flying from Trenton, New Jersey to San José in May is currently the most expensive (average of $238). 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

Traveling to a place near San José?

Book flights to San José if you plan to visit one of these locations
Alajuela
Monteverde
Jacó
Heredia
Dominical
Manuel Antonio

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