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

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

What airlines fly to St. Louis?

American Airlines, United Airlines and Southwest are the top three most popular airlines that fly to St. Louis from Trenton, New Jersey according to our data. American Airlines is the first choice among our users, with 35% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 6 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Trenton-Mercer Airport to Lambert-St Louis Airport are refreshed on a daily basis.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Trenton-Mercer Airport to Lambert-St Louis Airport.

What documentation or ID do you need to fly to Lambert-St Louis Airport?

The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$77 Cheap Flights from Trenton, New Jersey to St. Louis (TTN-STL) in 2025

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Find the cheapest flights from Trenton, New Jersey to St. Louis (TTN-STL)

Round-trip

One-way

Last minute

Cheap round-trip flights

10:30 am - 3:04 pmTTN-STL

5h 34m1 stop

7:55 pm - 9:32 amSTL-TTN

12h 37m2 stops

$190Frontier

Find Deal

Sun, Sep 7 - Sat, Sep 13

6:00 am - 1:07 pmTTN-STL

8h 07m1 stop

2:02 pm - 10:43 pmSTL-TTN

7h 41m1 stop

$197Frontier

Find Deal

Sun, Aug 24 - Thu, Aug 28

7:25 pm - 12:56 pmTTN-STL

18h 31m2 stops

2:02 pm - 10:43 pmSTL-TTN

7h 41m1 stop

$207Frontier

Find Deal

Sun, Aug 24 - Thu, Aug 28

4:25 pm - 5:10 pmTTN-STL

25h 45m1 stop

4:33 pm - 10:14 amSTL-TTN

16h 41m1 stop

$218Frontier

Find Deal

Thu, Oct 9 - Sat, Oct 11

6:00 am - 5:10 pmTTN-STL

12h 10m1 stop

11:32 am - 9:24 amSTL-TTN

20h 52m2 stops

$227Frontier

Find Deal

Fri, Oct 17 - Sun, Oct 19

10:30 am - 3:04 pmTTN-STL

5h 34m1 stop

4:00 pm - 11:34 amSTL-TTN

18h 34m1 stop

$237Frontier

Find Deal

Thu, Sep 25 - Sun, Sep 28

10:30 am - 3:04 pmTTN-STL

5h 34m1 stop

4:00 pm - 11:34 amSTL-TTN

18h 34m1 stop

$238Frontier

Find Deal

Thu, Sep 11 - Sun, Sep 14

11:45 am - 9:06 amTTN-STL

22h 21m2 stops

4:58 pm - 11:00 amSTL-TTN

17h 02m2 stops

$258Frontier

Find Deal

Mon, Sep 8 - Sat, Sep 13

4:25 pm - 9:07 amTTN-STL

17h 42m2 stops

4:33 pm - 11:59 pmSTL-TTN

6h 26m1 stop

$274Frontier

Find Deal

Thu, Oct 9 - Sat, Oct 11

8:00 am - 1:32 pmTTN-STL

30h 32m2 stops

2:02 pm - 11:56 pmSTL-TTN

8h 54m1 stop

$440

Find Deal

Wed, Aug 27 - Sun, Aug 31

Frontier flights from Trenton, New Jersey to St. Louis

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

Frontier

Sep 7

TTN10:30 amTrenton-Mercer

5h 34m

1 stop

STL3:04 pmLambert-St Louis

Sep 13

STL7:55 pmLambert-St Louis

12h 37m

2 stops

TTN9:32 amTrenton-Mercer

$190

Find similar

Frontier

Aug 24

TTN6:00 amTrenton-Mercer

8h 07m

1 stop

STL1:07 pmLambert-St Louis

Aug 28

STL2:02 pmLambert-St Louis

7h 41m

1 stop

TTN10:43 pmTrenton-Mercer

$197

Find similar

Frontier

Aug 24

TTN7:25 pmTrenton-Mercer

18h 31m

2 stops

STL12:56 pmLambert-St Louis

Aug 28

STL2:02 pmLambert-St Louis

7h 41m

1 stop

TTN10:43 pmTrenton-Mercer

$207

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

TrentonSt. Louis

TTN - STL

TTNSTL

Trenton-Mercer

Sun 9/7

10:30 am-3:04 pm

1 stop5h 34m

Lambert-St Louis

Sat 9/13

7:55 pm-9:32 am

2 stops12h 37m

$190

TrentonSt. Louis

TTN - STL

TTNSTL

Trenton-Mercer

Sun 8/24

6:00 am-1:07 pm

1 stop8h 07m

Lambert-St Louis

Thu 8/28

2:02 pm-10:43 pm

1 stop7h 41m

$197

TrentonSt. Louis

TTN - STL

TTNSTL

Trenton-Mercer

Sun 8/24

7:25 pm-12:56 pm

2 stops18h 31m

Lambert-St Louis

Thu 8/28

2:02 pm-10:43 pm

1 stop7h 41m

$207

TrentonSt. Louis

TTN - STL

TTNSTL

Trenton-Mercer

Thu 10/9

4:25 pm-5:10 pm

1 stop25h 45m

Lambert-St Louis

Sat 10/11

4:33 pm-10:14 am

1 stop16h 41m

$218

TrentonSt. Louis

TTN - STL

TTNSTL

Trenton-Mercer

Fri 10/17

6:00 am-5:10 pm

1 stop12h 10m

Lambert-St Louis

Sun 10/19

11:32 am-9:24 am

2 stops20h 52m

$227

TrentonSt. Louis

TTN - STL

TTNSTL

Trenton-Mercer

Thu 9/25

10:30 am-3:04 pm

1 stop5h 34m

Lambert-St Louis

Sun 9/28

4:00 pm-11:34 am

1 stop18h 34m

$237

TrentonSt. Louis

TTN - STL

TTNSTL

Trenton-Mercer

Thu 9/11

10:30 am-3:04 pm

1 stop5h 34m

Lambert-St Louis

Sun 9/14

4:00 pm-11:34 am

1 stop18h 34m

$238

TrentonSt. Louis

TTN - STL

TTNSTL

Trenton-Mercer

Mon 9/8

11:45 am-9:06 am

2 stops22h 21m

Lambert-St Louis

Sat 9/13

4:58 pm-11:00 am

2 stops17h 02m

$258

TrentonSt. Louis

TTN - STL

TTNSTL

Trenton-Mercer

Thu 10/9

4:25 pm-9:07 am

2 stops17h 42m

Lambert-St Louis

Sat 10/11

4:33 pm-11:59 pm

1 stop6h 26m

$274

TrentonSt. Louis

TTN - STL

TTNSTL

Trenton-Mercer

Wed 8/27

8:00 am-1:32 pm

2 stops30h 32m

Lambert-St Louis

Sun 8/31

2:02 pm-11:56 pm

1 stop8h 54m

$440

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Prices

Airlines

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Tuesday when prices can be found for as low as $333. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $440. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Trenton, New Jersey in the morning is the least expensive time of day to depart. momondo users have found prices as low as $349 when looking at flights departing in the morning. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $394 per ticket.

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

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

Estimated round-trip price

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

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

Best Price Found	$77
Fastest flight time	5h 34m
Direct flights	None
Airports in St. Louis	1 airport

The best one-way flight to St. Louis from Trenton, New Jersey in the past 72 hours is $77. The best round-trip flight deal from Trenton, New Jersey to St. Louis found on momondo in the last 72 hours is $190.

The fastest flight from Trenton, New Jersey to St. Louis takes 5h 34m

There are no direct flights from Trenton, New Jersey to St. Louis. Popular non-direct route for this connection is Trenton-Mercer Airport - Lambert-St Louis Airport.

There is 1 airport near St. Louis: Lambert-St Louis (STL)

Search flight deals

How far is Trenton-Mercer to Lambert-St Louis by plane?
There are 829.7 mi between Trenton-Mercer and Lambert-St Louis. 5h 34m is a normal flight duration for this route.
When did momondo last update prices for flights from Trenton-Mercer Airport to Lambert-St Louis Airport?
Prices for flights from Trenton-Mercer Airport to Lambert-St Louis Airport are refreshed on a daily basis.
How old do you have to be to fly from Trenton-Mercer Airport to Lambert-St Louis Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Trenton-Mercer Airport to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Trenton to St. Louis. Millions of users trust and use momondo every year so you are in good hands.

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

All flight searches from Trenton to St. Louis on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between Trenton and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to St. Louis, momondo offers a useful price alert feature which will track prices for flights to St. Louis from Trenton and alert you when they change.