Which airports can I use when flying from St. Louis to Trenton?

Flights from St. Louis to Trenton usually depart from Lambert-St Louis (STL) and arrive at Trenton-Mercer (TTN).

Which airports do connecting flights from St. Louis to Trenton pass through?

Most connecting flights from St. Louis to Trenton pass through Orlando (MCO), which handles 100% of one-stop traffic on this route. Other layover airports each see under 5%.

Can I save money by using flexible dates for flights from St. Louis to Trenton?

On the St. Louis to Trenton route, being flexible with your departure day can save you up to 48%. Saturday is the cheapest day at $146 round-trip on average, while Tuesday is the most expensive at $279: a $133 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

Do I need a passport to fly from St. Louis to Trenton?

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

Have flight prices from St. Louis to Trenton changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $270 to $736. That means the highest observed fare was about 3x higher than the lowest one.

How are flight prices from St. Louis to Trenton looking right now?

One-way fares from St. Louis to Trenton are currently higher than usual. Average one-way flight prices are about $220, which is 76% above the typical average for this route.

What is the time difference between St. Louis and Trenton?

Trenton is 1 hour ahead of St. Louis (Eastern Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

What is the cheapest airline to fly from St. Louis to Trenton?

Frontier ($270) offered the cheapest round-trip ticket from St. Louis to Trenton in the last 5 days.

What is the cheapest layover airport when flying from St. Louis to Trenton?

Flights via Orlando (MCO) offer the most affordable fares, with an average round-trip price of $219. Based on KAYAK data over the past 3 months.

When flying from St. Louis to Trenton which airport offers the shortest layover?

Orlando (MCO) had the shortest average connection time for St. Louis to Trenton layovers at 409 minutes over the past 3 months.

$140 CHEAP FLIGHTS from St. Louis to Trenton (STL - TTN)

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Cheapest round-trip

$270

Typical prices: $146-$279

Frontier

Mon 11/12Thu 11/15

STL - TTN • 1 stop

Cheapest one-way

$140

Typical prices: $125-$125

Frontier

Mon 10/22

STL - TTN • 1 stop

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Flight Deals

Cheap Flights from St. Louis to Trenton (STL-TTN)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Recent round-trip flight deals from St. Louis to Trenton

Thu, Nov 12 - Sun, Nov 15

4:26 pm - 7:15 pmSTL Lambert-St Louis-TTN Trenton-Mercer

25h 49m1 stop Orlando

8:01 pm - 11:16 pmTTN Trenton-Mercer-STL Lambert-St Louis

28h 15m1 stop Orlando

$270Frontier

Wed, Dec 2 - Mon, Dec 7

6:05 pm - 10:28 amSTL Lambert-St Louis-TTN Trenton-Mercer

15h 23m1 stop Orlando

11:23 am - 12:41 amTTN Trenton-Mercer-STL Lambert-St Louis

14h 18m1 stop Orlando

$278Frontier

Fri, Nov 13 - Sun, Nov 15

4:26 pm - 7:15 pmSTL Lambert-St Louis-TTN Trenton-Mercer

25h 49m1 stop Orlando

8:01 pm - 11:16 pmTTN Trenton-Mercer-STL Lambert-St Louis

28h 15m1 stop Orlando

$291Frontier

Thu, Oct 29 - Sun, Nov 1

4:26 pm - 7:15 pmSTL Lambert-St Louis-TTN Trenton-Mercer

25h 49m1 stop Orlando

8:01 pm - 11:16 pmTTN Trenton-Mercer-STL Lambert-St Louis

28h 15m1 stop Orlando

$299Frontier

Thu, Oct 1 - Thu, Oct 8

6:39 pm - 6:42 pmSTL Lambert-St Louis-TTN Trenton-Mercer

23h 03m1 stop Orlando

7:39 pm - 11:13 pmTTN Trenton-Mercer-STL Lambert-St Louis

28h 34m1 stop Orlando

$309Frontier

Thu, Oct 1 - Sun, Oct 4

6:39 pm - 6:42 pmSTL Lambert-St Louis-TTN Trenton-Mercer

23h 03m1 stop Orlando

7:39 pm - 4:34 pmTTN Trenton-Mercer-STL Lambert-St Louis

21h 55m1 stop Orlando

$313Frontier

Fri, Dec 11 - Mon, Dec 14

9:50 am - 10:28 amSTL Lambert-St Louis-TTN Trenton-Mercer

23h 38m1 stop Orlando

11:23 am - 12:41 amTTN Trenton-Mercer-STL Lambert-St Louis

14h 18m1 stop Orlando

$319Frontier

Fri, Oct 23 - Sun, Oct 25

4:30 pm - 6:54 pmSTL Lambert-St Louis-TTN Trenton-Mercer

25h 24m1 stop Orlando

7:39 pm - 11:13 pmTTN Trenton-Mercer-STL Lambert-St Louis

28h 34m1 stop Orlando

$321Frontier

Thu, Oct 15 - Thu, Oct 22

4:30 pm - 6:54 pmSTL Lambert-St Louis-TTN Trenton-Mercer

25h 24m1 stop Orlando

7:39 pm - 11:13 pmTTN Trenton-Mercer-STL Lambert-St Louis

28h 34m1 stop Orlando

$329Frontier

Thu, Oct 1 - Sun, Oct 4

6:39 pm - 6:42 pmSTL Lambert-St Louis-TTN Trenton-Mercer

23h 03m1 stop Orlando

7:39 pm - 4:34 pmTTN Trenton-Mercer-STL Lambert-St Louis

21h 55m1 stop Orlando

$330Frontier

Booking Insights

Price, demand and travel trends for St. Louis to Trenton flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from St. Louis to Trenton with more confidence.

Prices

Airlines

Layovers

How much is a round-trip flight from St. Louis to Trenton?

Round-trip flights from St. Louis to Trenton start at $270. Prices are typical for this route right now, with typical round-trip fares ranging from $146 to $279. The lowest price found in the past 5 days was $270 on Frontier.

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Cheapest flight	$140

Flight from St. Louis to Trenton

When to book flights from St. Louis to Trenton

Are your dates flexible? Find out the best times to travel from St. Louis to Trenton based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Which airports can I use when flying from St. Louis to Trenton?
Flights from St. Louis to Trenton usually depart from Lambert-St Louis (STL) and arrive at Trenton-Mercer (TTN).
Which airports do connecting flights from St. Louis to Trenton pass through?
Most connecting flights from St. Louis to Trenton pass through Orlando (MCO), which handles 100% of one-stop traffic on this route. Other layover airports each see under 5%.
Can I save money by using flexible dates for flights from St. Louis to Trenton?
On the St. Louis to Trenton route, being flexible with your departure day can save you up to 48%. Saturday is the cheapest day at $146 round-trip on average, while Tuesday is the most expensive at $279: a $133 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.
Do I need a passport to fly from St. Louis to Trenton?
No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.
Have flight prices from St. Louis to Trenton changed much recently?
Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $270 to $736. That means the highest observed fare was about 3x higher than the lowest one.
How are flight prices from St. Louis to Trenton looking right now?
One-way fares from St. Louis to Trenton are currently higher than usual. Average one-way flight prices are about $220, which is 76% above the typical average for this route.
What is the time difference between St. Louis and Trenton?
Trenton is 1 hour ahead of St. Louis (Eastern Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

If your dates can be flexible, aim for a Saturday departure instead of Tuesday. On this route, Saturday flights average $146 - about $133 less than Tuesday (48% savings) based on the last 12 months.

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Everything you should know

Cheap Flights from St. Louis to Trenton (STL-TTN)

Recent round-trip flight deals from St. Louis to Trenton

Recent one-way flight deals from St. Louis to Trenton

Price, demand and travel trends for St. Louis to Trenton flights

How much is a round-trip flight from St. Louis to Trenton?

What is the cheapest airline to fly from St. Louis to Trenton?

What is the cheapest layover airport when flying from St. Louis to Trenton?

When flying from St. Louis to Trenton which airport offers the shortest layover?

Key details for St. Louis to Trenton flights

Cheapest flight

When to book flights from St. Louis to Trenton

Your St. Louis to Trenton flight questions, answered

Your guide to booking St. Louis to Trenton flights

More options for your flight from St. Louis to Trenton

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