$135+ Cheap flights from St. Louis to Trenton, NJ (STL - TTN)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/21. Fares are subject to change and may not be available on all flights or dates of travel.
STL — TTN
Oct 15 — Oct 221
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Trenton with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Trenton
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Best
Last-minute
One-way
Cheapest flights from St. Louis to TrentonExplore 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 September 15, 2026.
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 September 15, 2026.
This Expedia deal was found by Cheapflights users on 9/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/84:30 pm -
1 stop25h 24m
Sun 10/117:39 pm -
1 stop28h 34m
Deal found 9/11![Frontier logo]()
$260
This Expedia deal was found by Cheapflights users on 9/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/25:19 pm -
1 stop24h 23m
Sun 10/47:39 pm -
1 stop21h 55m
Deal found 9/10![Frontier logo]()
$262
This CheapOair deal was found by Cheapflights users on 9/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/124:26 pm -
1 stop25h 49m
Sun 11/158:01 pm -
1 stop28h 15m
Deal found 9/12![Frontier logo]()
$270
This Travelocity deal was found by Cheapflights users on 9/12. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/26:05 pm -
1 stop15h 23m
Mon 12/711:23 am -
1 stop14h 18m
Deal found 9/12![Frontier logo]()
$278
This Super.com deal was found by Cheapflights users on 9/11. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/84:30 pm -
1 stop25h 24m
Sat 10/107:39 pm -
1 stop28h 34m
Deal found 9/11![Frontier logo]()
$291
This Super.com deal was found by Cheapflights users on 9/11. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:39 pm -
1 stop23h 03m
Sun 10/47:39 pm -
1 stop21h 55m
Deal found 9/11![Frontier logo]()
$293
This Expedia deal was found by Cheapflights users on 9/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/224:30 pm -
1 stop25h 24m
Sun 10/257:39 pm -
1 stop28h 34m
Deal found 9/11![Frontier logo]()
$299
This CheapOair deal was found by Cheapflights users on 9/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:39 pm -
1 stop23h 03m
Thu 10/87:39 pm -
1 stop28h 34m
Deal found 9/14![Frontier logo]()
$309
This Expedia deal was found by Cheapflights users on 9/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/205:59 pm -
1 stop15h 35m
Sun 11/2211:19 am -
1 stop26h 06m
Deal found 9/11![Frontier logo]()
$311
Best flights from St. Louis to TrentonDiscover carefully curated flight deals from St. Louis to Trenton that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2026.
Discover carefully curated flight deals from St. Louis to Trenton that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2026.
This Expedia deal was found by Cheapflights users on 9/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/84:30 pm -
1 stop25h 24m
Sun 10/117:39 pm -
1 stop28h 34m
Deal found 9/11![Frontier logo]()
$260
This Expedia deal was found by Cheapflights users on 9/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/25:19 pm -
1 stop24h 23m
Sun 10/47:39 pm -
1 stop21h 55m
Deal found 9/10![Frontier logo]()
$262
This Travelocity deal was found by Cheapflights users on 9/12. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/26:05 pm -
1 stop15h 23m
Mon 12/711:23 am -
1 stop14h 18m
Deal found 9/12![Frontier logo]()
$278
This Super.com deal was found by Cheapflights users on 9/11. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/84:30 pm -
1 stop25h 24m
Sat 10/107:39 pm -
1 stop28h 34m
Deal found 9/11![Frontier logo]()
$291
This Travelocity deal was found by Cheapflights users on 9/11. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/86:05 pm -
1 stop15h 23m
Mon 12/1411:23 am -
1 stop14h 18m
Deal found 9/11![Frontier logo]()
$299
This CheapOair deal was found by Cheapflights users on 9/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:39 pm -
1 stop23h 03m
Thu 10/87:39 pm -
1 stop28h 34m
Deal found 9/14![Frontier logo]()
$309
This Expedia deal was found by Cheapflights users on 9/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/205:59 pm -
1 stop15h 35m
Sun 11/2211:19 am -
1 stop26h 06m
Deal found 9/11![Frontier logo]()
$311
This Super.com deal was found by Cheapflights users on 9/13. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:39 pm -
1 stop23h 03m
Sun 10/47:39 pm -
1 stop21h 55m
Deal found 9/13![Frontier logo]()
$313
This Expedia deal was found by Cheapflights users on 9/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/134:26 pm -
1 stop25h 49m
Sun 11/158:01 pm -
1 stop28h 15m
Deal found 9/14![Frontier logo]()
$321
This Expedia deal was found by Cheapflights users on 9/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/119:50 am -
1 stop23h 38m
Sun 12/1311:23 am -
1 stop22h 24m
Deal found 9/13![Frontier logo]()
$321
Last-minute flights from St. Louis to TrentonDiscover last-minute flight deals from St. Louis to Trenton. Data last updated September 15, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Trenton. Data last updated September 15, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 9/11. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:39 pm -
1 stop23h 03m
Sun 10/47:39 pm -
1 stop21h 55m
Deal found 9/11![Frontier logo]()
$293
This CheapOair deal was found by Cheapflights users on 9/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:39 pm -
1 stop23h 03m
Thu 10/87:39 pm -
1 stop28h 34m
Deal found 9/14![Frontier logo]()
$309
This Expedia deal was found by Cheapflights users on 9/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/25:19 pm -
1 stop24h 23m
Sun 10/47:39 pm -
1 stop21h 55m
Deal found 9/10![Frontier logo]()
$262
This Expedia deal was found by Cheapflights users on 9/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/84:30 pm -
1 stop25h 24m
Sun 10/117:39 pm -
1 stop28h 34m
Deal found 9/11![Frontier logo]()
$260
This Super.com deal was found by Cheapflights users on 9/11. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/84:30 pm -
1 stop25h 24m
Sat 10/107:39 pm -
1 stop28h 34m
Deal found 9/11![Frontier logo]()
$291
This Expedia deal was found by Cheapflights users on 9/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/154:30 pm -
1 stop25h 24m
Thu 10/227:39 pm -
1 stop28h 34m
Deal found 9/14![Frontier logo]()
$329
This Expedia deal was found by Cheapflights users on 9/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/224:30 pm -
1 stop25h 24m
Sun 10/257:39 pm -
1 stop28h 34m
Deal found 9/11![Frontier logo]()
$299
This Expedia deal was found by Cheapflights users on 9/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/234:30 pm -
1 stop25h 24m
Sun 10/257:39 pm -
1 stop28h 34m
Deal found 9/13![Frontier logo]()
$321
One-way flights from St. Louis to TrentonSearch for one-way flight options from St. Louis to Trenton. Find affordable one-way fares based on user searches. Data last updated September 15, 2026.
Search for one-way flight options from St. Louis to Trenton. Find affordable one-way fares based on user searches. Data last updated September 15, 2026.
This Super.com deal was found by Cheapflights users on 9/11. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/25:19 pm -
1 stop24h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Frontier logo]()
$135
This CheapOair deal was found by Cheapflights users on 9/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/224:30 pm -
1 stop25h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Frontier logo]()
$140
This CheapOair deal was found by Cheapflights users on 9/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/94:30 pm -
1 stop25h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Frontier logo]()
$142
This Super.com deal was found by Cheapflights users on 9/11. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:39 pm -
1 stop23h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Frontier logo]()
$154
This Expedia deal was found by Cheapflights users on 9/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/196:05 pm -
1 stop15h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Frontier logo]()
$171
This Expedia deal was found by Cheapflights users on 9/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/225:59 pm -
1 stop15h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$176
This Gotogate deal was found by Cheapflights users on 9/14. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:39 pm -
1 stop23h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Frontier logo]()
$186
This Super.com deal was found by Cheapflights users on 9/11. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/205:19 pm -
1 stop24h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Frontier logo]()
$208
This Frontier deal was found by Cheapflights users on 9/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/236:35 pm -
2 stops14h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Frontier logo]()
$225
This Expedia deal was found by Cheapflights users on 9/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/295:59 pm -
1 stop15h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Frontier logo]()
$531
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 September 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $260 (Expedia) |
One-way from | $135 (Orbitz) |
Popular in | November |
Cheapest in | February |
Average price | $378 |
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 7,457,451 searches. Data last updated September 15, 2026.
Use the filters below to find and compare flights from St. Louis to Trenton that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisTrenton
STL Lambert-St Louis - TTN Trenton-Mercer
STLTTN
Lambert-St Louis
Sat 11/21
5:59 pm-10:34 am
1 stop15h 35m
Trenton-Mercer
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$135
St. LouisTrenton
STL Lambert-St Louis - TTN Trenton-Mercer
STLTTN
Lambert-St Louis
Fri 10/2
5:19 pm-6:42 pm
1 stop24h 23m
Trenton-Mercer
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$135
St. LouisTrenton
STL Lambert-St Louis - TTN Trenton-Mercer
STLTTN
Lambert-St Louis
Fri 10/16
4:30 pm-6:54 pm
1 stop25h 24m
Trenton-Mercer
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$135
St. LouisTrenton
STL Lambert-St Louis - TTN Trenton-Mercer
STLTTN
Lambert-St Louis
Fri 10/9
4:30 pm-6:54 pm
1 stop25h 24m
Trenton-Mercer
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$142
St. LouisTrenton
STL Lambert-St Louis - TTN Trenton-Mercer
STLTTN
Lambert-St Louis
Fri 9/25
5:19 pm-6:42 pm
1 stop24h 23m
Trenton-Mercer
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$163
St. LouisTrenton
STL Lambert-St Louis - TTN Trenton-Mercer
STLTTN
Lambert-St Louis
Sun 9/20
5:19 pm-6:42 pm
1 stop24h 23m
Trenton-Mercer
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$208
St. LouisTrenton
STL Lambert-St Louis - TTN Trenton-Mercer
STLTTN
Lambert-St Louis
Mon 11/23
6:35 pm-10:34 am
2 stops14h 59m
Trenton-Mercer
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$225
St. LouisTrenton
STL Lambert-St Louis - TTN Trenton-Mercer
STLTTN
Lambert-St Louis
Thu 10/8
4:30 pm-6:54 pm
1 stop25h 24m
Trenton-Mercer
Sun 10/11
7:39 pm-11:13 pm
1 stop28h 34m
$260
St. LouisTrenton
STL Lambert-St Louis - TTN Trenton-Mercer
STLTTN
Lambert-St Louis
Fri 10/2
5:19 pm-6:42 pm
1 stop24h 23m
Trenton-Mercer
Sun 10/4
7:39 pm-4:34 pm
1 stop21h 55m
$262
St. LouisTrenton
STL Lambert-St Louis - TTN Trenton-Mercer
STLTTN
Lambert-St Louis
Wed 12/2
6:05 pm-10:28 am
1 stop15h 23m
Trenton-Mercer
Mon 12/7
11:23 am-12:41 am
1 stop14h 18m
$278
Showing 1-10 of 19 resultsSorted by cheapest first
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on St. Louis-Trenton, New Jersey flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Trenton, New Jersey flight deals on Cheapflights vs. FlightHub >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 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 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.
STL-TTN
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.
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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