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Trenton

$63+ Cheap flights from St. Louis to Trenton, NJ (STL - 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 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
STL — TTN
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheap flight deals from St. Louis to Trenton

Cheapest flights from St. Louis to Trenton
Explore the most affordable flight options available from St. Louis to Trenton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 15, 2025.

This Frontier deal was found by Cheapflights users on 12/12. 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.
Wed 12/244:27 pmSTL - TTN
1 stop6h 32mFrontier
Thu 1/19:59 pmTTN - STL
1 stop12h 46mFrontier
Deal found 12/12$238
This Booking.com deal was found by Cheapflights users on 12/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/314:27 pmSTL - TTN
1 stop27h 47mFrontier
Sat 1/108:00 amTTN - STL
1 stop15h 33mFrontier
Deal found 12/14$256
This Mytrip deal was found by Cheapflights users on 12/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/133:30 pmSTL - TTN
1 stop7h 29mFrontier
Sat 12/209:59 pmTTN - STL
1 stop25h 34mFrontier
Deal found 12/13$301
This Trip.com deal was found by Cheapflights users on 12/14. 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.
Mon 12/294:27 pmSTL - TTN
1 stop6h 32mFrontier
Fri 1/29:11 pmTTN - STL
1 stop26h 22mFrontier
Deal found 12/14$400
This Frontier deal was found by Cheapflights users on 12/14. 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 12/204:27 pmSTL - TTN
1 stop6h 32mFrontier
Sun 12/219:59 pmTTN - STL
1 stop12h 46mFrontier
Deal found 12/14$417
This Mytrip deal was found by Cheapflights users on 12/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/199:07 amSTL - TTN
1 stop8h 09mFrontier
Wed 12/249:59 pmTTN - STL
1 stop25h 34mFrontier
Deal found 12/14$479
This Gotogate deal was found by Cheapflights users on 12/13. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/173:30 pmSTL - TTN
1 stop28h 44mFrontier
Wed 12/249:59 pmTTN - STL
1 stop25h 34mFrontier
Deal found 12/13$534
This Gotogate deal was found by Cheapflights users on 12/13. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/173:30 pmSTL - TTN
1 stop28h 44mFrontier
Fri 12/196:10 amTTN - STL
1 stop14h 32mFrontier
Deal found 12/13$584
This Trip.com deal was found by Cheapflights users on 12/13. 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.
Thu 12/254:27 pmSTL - TTN
1 stop6h 32mFrontier
Fri 1/29:11 pmTTN - STL
1 stop26h 22mFrontier
Deal found 12/13$588

Find flight deals from St. Louis to Trenton

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Trenton (TTN). 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 December 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$162
(Mytrip)

One-way from

$63
(Trip.com)

Popular in

November

Cheapest in

April

Average price

$351
Provider with most accurate pricing for Lambert-St Louis-Trenton-Mercer flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Trenton-Mercer flights.
Search Deals
From Lambert-St Louis to Trenton-Mercer
Search Deals
One-way flight from Lambert-St Louis to Trenton-Mercer
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($46 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Trenton 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 December 15, 2025.
Use the filters below to find and compare flights from St. Louis to Trenton that are best for you.

Fly from

St. Louis

Fly to

Trenton

Route

Depart

Return

Price

St. LouisTrenton

STL - TTN

STLTTN

Lambert-St Louis

Mon 1/12

5:06 pm-11:59 pm

1 stop5h 53m

Trenton-Mercer

Tue 1/20

3:21 pm-11:33 pm

1 stop9h 12m

$162

St. LouisTrenton

STL - TTN

STLTTN

Lambert-St Louis

Tue 1/13

5:11 pm-9:44 pm

1 stop27h 33m

Trenton-Mercer

Wed 1/21

3:21 pm-11:33 pm

1 stop9h 12m

$173

St. LouisTrenton

STL - TTN

STLTTN

Lambert-St Louis

Wed 1/28

5:42 pm-7:48 pm

1 stop25h 06m

Trenton-Mercer

Sat 1/31

12:04 pm-11:33 pm

1 stop12h 29m

$196

St. LouisTrenton

STL - TTN

STLTTN

Lambert-St Louis

Fri 1/23

11:18 am-6:38 pm

1 stop6h 20m

Trenton-Mercer

Tue 1/27

3:21 pm-11:33 pm

1 stop9h 12m

$197

St. LouisTrenton

STL - TTN

STLTTN

Lambert-St Louis

Fri 1/23

11:18 am-6:38 pm

1 stop6h 20m

Trenton-Mercer

Sat 1/24

12:04 pm-11:33 pm

1 stop12h 29m

$197

St. LouisTrenton

STL - TTN

STLTTN

Lambert-St Louis

Sat 1/24

12:12 pm-7:24 pm

1 stop6h 12m

Trenton-Mercer

Tue 1/27

3:21 pm-11:33 pm

1 stop9h 12m

$213

St. LouisTrenton

STL - TTN

STLTTN

Lambert-St Louis

Fri 1/23

11:18 am-6:38 pm

1 stop6h 20m

Trenton-Mercer

Thu 1/29

12:04 pm-11:33 pm

1 stop12h 29m

$218

St. LouisTrenton

STL - TTN

STLTTN

Lambert-St Louis

Fri 1/23

11:18 am-6:38 pm

1 stop6h 20m

Trenton-Mercer

Wed 1/28

3:21 pm-11:33 pm

1 stop9h 12m

$218

St. LouisTrenton

STL - TTN

STLTTN

Lambert-St Louis

Fri 1/23

11:18 am-6:38 pm

1 stop6h 20m

Trenton-Mercer

Sun 1/25

9:06 pm-9:21 am

1 stop13h 15m

$232

St. LouisTrenton

STL - TTN

STLTTN

Lambert-St Louis

Sat 1/24

12:12 pm-7:24 pm

1 stop6h 12m

Trenton-Mercer

Wed 1/28

3:21 pm-11:33 pm

1 stop9h 12m

$234

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/13

Showing 1-10 of 22 results
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Compare providers for flights from St. Louis to Trenton

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

Have a flexible travel schedule? Discover the best time to fly to Trenton from St. Louis 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 St. Louis to Trenton

What is the cheapest month to book a flight from St. Louis to Trenton, New Jersey?

Currently, January is the cheapest month in which you can book a flight from St. Louis to Trenton, New Jersey (average of $128). Flying from St. Louis to Trenton, New Jersey in May is currently the most expensive (average of $199). 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 St. Louis to Trenton. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from St. Louis to Trenton, New Jersey?

    Airlines like Frontier fly from St. Louis to Trenton, New Jersey in about 5h 53m. The time it takes to get you to your destination can typically vary by up to . The distance from St. Louis to Trenton, New Jersey is about 834 mi.

  • Can I find deals for flights from St. Louis to Trenton that include hotel bookings?

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

  • How can I find direct flights from St. Louis to Trenton?

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

  • Can I find deals for business class flights from St. Louis to Trenton?

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

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Trenton, New Jersey (average of $128). Flying from St. Louis to Trenton, New Jersey in May is currently the most expensive (average of $199). 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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