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

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

What popular places can I visit in St. Louis?

Some of the most popular sights in St. Louis are Busch Stadium, Enterprise Center and America's Center Convention Complex. These are among the most viewed places in St. Louis on KAYAK.

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

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 Trenton to St. Louis 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 $278 to $892. That means the highest observed fare was about 3x higher than the lowest one.

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

One-way fares from Trenton to St. Louis are currently lower than usual. Average one-way flight prices are about $157, which is 9% below the typical average for this route.

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

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

What car rental options are available at Lambert-St Louis Airport (STL)?

Lambert-St Louis Airport (STL) hosts 5 major car rental companies, with daily rates starting from around $31 for economy cars. Top options include: • Hertz • Budget • Alamo • Enterprise Rent-A-Car • Payless

$134 CHEAP FLIGHTS from Trenton to St. Louis (TTN - STL)

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Cheapest one-way

$134

Typical prices: $171-$171

Frontier

Sun 10/7

TTN - STL • 1 stop

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Flight Deals

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

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

Round-trip

One-way

Last minute

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

Thu, Oct 8 - Thu, Oct 15

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

28h 34m1 stop Orlando

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

25h 24m1 stop Orlando

$258Frontier

Thu, Oct 8 - Thu, Oct 15

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

28h 34m1 stop Orlando

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

25h 24m1 stop Orlando

$278Frontier

Fri, Oct 9 - Fri, Oct 16

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

28h 34m1 stop Orlando

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

25h 24m1 stop Orlando

$281Frontier

Wed, Sep 30 - Fri, Oct 2

7:39 pm - 5:54 pmTTN Trenton-Mercer-STL Lambert-St Louis

23h 15m1 stop Orlando

5:19 pm - 6:42 pmSTL Lambert-St Louis-TTN Trenton-Mercer

24h 23m1 stop Orlando

$301Frontier

Thu, Oct 8 - Thu, Oct 15

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

28h 34m1 stop Orlando

4:30 pm - 7:13 pmSTL Lambert-St Louis-TTN Trenton-Mercer

25h 43m1 stop Orlando

$320Multiple Airlines

Fri, Oct 23 - Sun, Oct 25

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

28h 34m1 stop Orlando

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

25h 24m1 stop Orlando

$330Frontier

Wed, Sep 30 - Sun, Oct 4

7:39 pm - 5:54 pmTTN Trenton-Mercer-STL Lambert-St Louis

23h 15m1 stop Orlando

5:19 pm - 6:42 pmSTL Lambert-St Louis-TTN Trenton-Mercer

24h 23m1 stop Orlando

$331Frontier

Tue, Nov 24 - Mon, Nov 30

11:19 am - 12:25 pmTTN Trenton-Mercer-STL Lambert-St Louis

26h 06m1 stop Orlando

1:20 pm - 10:28 amSTL Lambert-St Louis-TTN Trenton-Mercer

20h 08m1 stop Orlando

$349Frontier

Fri, Oct 23 - Sun, Oct 25

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

28h 34m1 stop Orlando

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

25h 24m1 stop Orlando

$350Frontier

Thu, Nov 12 - Sun, Nov 15

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

28h 15m1 stop Orlando

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

25h 49m1 stop Orlando

$355Frontier

Booking Insights

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

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

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

Frontier ($258) offered the cheapest round-trip ticket from Trenton to St. Louis in the last 5 days.

Find deals

Cheapest flight	$134

Flight from Trenton to St. Louis

When to book flights from Trenton to St. Louis

Are your dates flexible? Find out the best times to travel from Trenton to St. Louis 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 Trenton to St. Louis?
Flights from Trenton to St. Louis usually depart from Trenton-Mercer (TTN) and arrive at Lambert-St Louis (STL).
What popular places can I visit in St. Louis?
Some of the most popular sights in St. Louis are Busch Stadium, Enterprise Center and America's Center Convention Complex. These are among the most viewed places in St. Louis on KAYAK.
Do I need a passport to fly from Trenton to St. Louis?
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 Trenton to St. Louis 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 $278 to $892. That means the highest observed fare was about 3x higher than the lowest one.
How are flight prices from Trenton to St. Louis looking right now?
One-way fares from Trenton to St. Louis are currently lower than usual. Average one-way flight prices are about $157, which is 9% below the typical average for this route.
What is the time difference between Trenton and St. Louis?
St. Louis is 1 hour behind Trenton (Central Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.
What car rental options are available at Lambert-St Louis Airport (STL)?
Lambert-St Louis Airport (STL) hosts 5 major car rental companies, with daily rates starting from around $31 for economy cars. Top options include:
• Hertz
• Budget
• Alamo
• Enterprise Rent-A-Car
• Payless

If you're arriving late at night and need somewhere to stay, check out these hotels close to Lambert-St Louis Airport.
- Drury Inn & Suites St. Louis Airport
- Renaissance St. Louis Airport Hotel
- DoubleTree by Hilton St. Louis Airport

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$134 Find Cheap Flights from Trenton to St. Louis - Compare and Save

Everything you should know

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

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

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

Recent last minute flight deals from Trenton to St. Louis

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

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

Key details for Trenton to St. Louis flights

Cheapest flight

When to book flights from Trenton to St. Louis

Your Trenton to St. Louis flight questions, answered

Your guide to booking Trenton to St. Louis flights

More options for your flight from Trenton to St. Louis

Complete your trip to St. Louis with a hotel stay or car rental

Information on your arrival and departure airports

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Flights from domestic origins to St. Louis

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