When did momondo last update prices for flights from Lambert-St Louis Airport to Trenton-Mercer Airport?

Prices for flights from Lambert-St Louis Airport to Trenton-Mercer Airport were last updated today.

How old do you have to be to fly from Lambert-St Louis Airport to Trenton-Mercer Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Trenton-Mercer Airport.

What documentation or ID do you need to fly to Trenton-Mercer Airport?

The travel and health documents you'll need for your trip to Trenton-Mercer Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Trenton-Mercer Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$109 Cheap Flights from St. Louis to Trenton in 2026

1 adult

0 bags

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from St. Louis to New York

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:49 pm - 11:39 pm

STL

TTN

6h 50m

1 stop

11:54 am - 11:59 pm

TTN

STL

13h 05m

1 stop

$175Frontier

Thu, Feb 19 - Mon, Feb 23

3:49 pm - 11:39 pm

STL

TTN

6h 50m

1 stop

6:00 am - 10:37 am

TTN

STL

53h 37m

2 stops

$177Multiple Airlines

Wed, Feb 25 - Mon, Mar 16

3:49 pm - 11:39 pm

STL

TTN

6h 50m

1 stop

6:00 am - 11:19 pm

TTN

STL

18h 19m

1 stop

$179Frontier

Wed, Feb 25 - Mon, Mar 16

4:55 pm - 9:37 pm

STL

TTN

27h 42m

1 stop

6:00 am - 11:19 pm

TTN

STL

18h 19m

1 stop

$232Frontier

Tue, Apr 21 - Mon, Apr 27

3:49 pm - 11:39 pm

STL

TTN

6h 50m

1 stop

11:54 am - 11:59 pm

TTN

STL

13h 05m

1 stop

$234Frontier

Wed, Feb 25 - Mon, Mar 2

3:49 pm - 11:39 pm

STL

TTN

6h 50m

1 stop

1:52 pm - 12:27 am

TTN

STL

11h 35m

1 stop

$244Frontier

Wed, Feb 25 - Fri, Feb 27

9:41 am - 11:39 pm

STL

TTN

12h 58m

1 stop

1:52 pm - 12:27 am

TTN

STL

11h 35m

1 stop

$254Frontier

Sat, Feb 21 - Fri, Feb 27

3:49 pm - 11:39 pm

STL

TTN

6h 50m

1 stop

11:54 am - 11:59 pm

TTN

STL

13h 05m

1 stop

$271Frontier

Thu, Feb 19 - Mon, Mar 2

3:49 pm - 11:39 pm

STL

TTN

6h 50m

1 stop

1:52 pm - 12:27 am

TTN

STL

11h 35m

1 stop

$281Frontier

Thu, Feb 19 - Fri, Feb 27

3:49 pm - 11:39 pm

STL

TTN

6h 50m

1 stop

11:54 am - 11:59 pm

TTN

STL

13h 05m

1 stop

$285Frontier

Fri, Feb 27 - Mon, Mar 2

Frontier flights from St. Louis to Trenton, New Jersey

Our best Frontier deals on St. Louis to Trenton, New Jersey flight tickets

Frontier

Feb 19

STL3:49 pmLambert-St Louis

6h 50m

1 stop

TTN11:39 pmTrenton-Mercer

Feb 23

TTN11:54 amTrenton-Mercer

13h 05m

1 stop

STL11:59 pmLambert-St Louis

$175

Frontier

Feb 25

STL3:49 pmLambert-St Louis

6h 50m

1 stop

TTN11:39 pmTrenton-Mercer

Mar 16

TTN6:00 amTrenton-Mercer

18h 19m

1 stop

STL11:19 pmLambert-St Louis

$179

Frontier

Apr 21

STL4:55 pmLambert-St Louis

27h 42m

1 stop

TTN9:37 pmTrenton-Mercer

Apr 27

TTN6:00 amTrenton-Mercer

18h 19m

1 stop

STL11:19 pmLambert-St Louis

$232

momondo Fare Finder

Use the filters below to find and compare flights from St. Louis to Trenton, New Jersey that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisTrenton

STL - TTN

STLTTN

Lambert-St Louis

Thu 2/19

3:49 pm-11:39 pm

1 stop6h 50m

Trenton-Mercer

Mon 2/23

11:54 am-11:59 pm

1 stop13h 05m

$175

St. LouisTrenton

STL - TTN

STLTTN

Lambert-St Louis

Wed 2/25

3:49 pm-11:39 pm

1 stop6h 50m

Trenton-Mercer

Mon 3/16

6:00 am-10:37 am

2 stops53h 37m

$177

St. LouisTrenton

STL - TTN

STLTTN

Lambert-St Louis

Wed 2/25

3:49 pm-11:39 pm

1 stop6h 50m

Trenton-Mercer

Mon 3/16

6:00 am-11:19 pm

1 stop18h 19m

$179

St. LouisTrenton

STL - TTN

STLTTN

Lambert-St Louis

Tue 4/21

4:55 pm-9:37 pm

1 stop27h 42m

Trenton-Mercer

Mon 4/27

6:00 am-11:19 pm

1 stop18h 19m

$232

St. LouisTrenton

STL - TTN

STLTTN

Lambert-St Louis

Wed 2/25

3:49 pm-11:39 pm

1 stop6h 50m

Trenton-Mercer

Mon 3/2

11:54 am-11:59 pm

1 stop13h 05m

$234

St. LouisTrenton

STL - TTN

STLTTN

Lambert-St Louis

Wed 2/25

3:49 pm-11:39 pm

1 stop6h 50m

Trenton-Mercer

Fri 2/27

1:52 pm-12:27 am

1 stop11h 35m

$244

St. LouisTrenton

STL - TTN

STLTTN

Lambert-St Louis

Sat 2/21

9:41 am-11:39 pm

1 stop12h 58m

Trenton-Mercer

Fri 2/27

1:52 pm-12:27 am

1 stop11h 35m

$254

St. LouisTrenton

STL - TTN

STLTTN

Lambert-St Louis

Thu 2/19

3:49 pm-11:39 pm

1 stop6h 50m

Trenton-Mercer

Mon 3/2

11:54 am-11:59 pm

1 stop13h 05m

$271

St. LouisTrenton

STL - TTN

STLTTN

Lambert-St Louis

Thu 2/19

3:49 pm-11:39 pm

1 stop6h 50m

Trenton-Mercer

Fri 2/27

1:52 pm-12:27 am

1 stop11h 35m

$281

St. LouisTrenton

STL - TTN

STLTTN

Lambert-St Louis

Fri 2/27

3:49 pm-11:39 pm

1 stop6h 50m

Trenton-Mercer

Mon 3/2

11:54 am-11:59 pm

1 stop13h 05m

$285

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Trenton, New Jersey

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Lambert-St Louis to Trenton-Mercer?

Frontier is the most popular carrier operating from Lambert-St Louis to Trenton-Mercer

What airlines fly to Trenton, New Jersey?

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Trenton, New Jersey from St. Louis according to our data. American Airlines is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Trenton, New Jersey. Keep in mind that there are 6 different airlines that fly to Trenton, New Jersey on a routine basis, so you have a few additional options to choose from.

When to book flights from St. Louis to Trenton, New Jersey

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Trenton, New Jersey according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap St. Louis to Trenton, New Jersey (STL to TTN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Trenton, New Jersey

Fastest flight time	6h 08m
Direct flights	None

The fastest flight from St. Louis to Trenton, New Jersey takes 6h 08m

There are no direct flights from St. Louis to Trenton, New Jersey. There are no popular flight routes from St. Louis to Trenton, New Jersey.

Search flight deals

How far is Lambert-St Louis to Trenton-Mercer by plane?
Trenton-Mercer is 829.7 mi away from Lambert-St Louis. 6h 08m is a normal flight duration for this route.
When did momondo last update prices for flights from Lambert-St Louis Airport to Trenton-Mercer Airport?
Prices for flights from Lambert-St Louis Airport to Trenton-Mercer Airport were last updated today.
How old do you have to be to fly from Lambert-St Louis Airport to Trenton-Mercer Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Trenton-Mercer Airport.
What documentation or ID do you need to fly to Trenton-Mercer Airport?
The travel and health documents you'll need for your trip to Trenton-Mercer Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Trenton-Mercer Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Trenton?

Finding the right flight to Trenton from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Trenton quick and easy, saving you time and money.

Can I find flights from St. Louis to Trenton with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for St. Louis to Trenton flights to just show those with flexible booking policies.

How can momondo help me find flights from St. Louis to Trenton?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Trenton.

I’m not ready to book a flight from St. Louis to Trenton right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of St. Louis to Trenton flights. All you need is a valid email address and we will do the rest; it is that quick and easy.