TTN - STL

$88 Find Cheap Flights from Trenton to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Trenton to St. Louis departing on 1/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Trenton to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Trenton to St. Louis, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$140
Frontier
Fri 2/6Mon 2/9
TTN - STL • 1 stop
Cheapest one-way
$88
Frontier
Mon 1/5
TTN - STL • 1 stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to St. Louis!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Trenton to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Fri, Feb 6 - Mon, Feb 9
Frontier Logo
7:36 pm - 11:33 pm
TTN
-
STL
28h 57m1 stop
Frontier Logo
5:42 pm - 10:02 pm
STL
-
TTN
27h 20m1 stop
$140Frontier
Tue, Jan 20 - Sat, Jan 24
Frontier Logo
3:21 pm - 11:33 pm
TTN
-
STL
9h 12m1 stop
Frontier Logo
5:42 pm - 8:36 am
STL
-
TTN
13h 54m1 stop
$152Frontier
Thu, Mar 5 - Mon, Mar 9
Frontier Logo
9:59 pm - 7:13 am
TTN
-
STL
10h 14m1 stop
Frontier Logo
9:07 am - 4:18 pm
STL
-
TTN
6h 11m1 stop
$162Frontier
Thu, Jan 8 - Mon, Jan 12
Frontier Logo
2:32 pm - 10:33 pm
TTN
-
STL
9h 01m1 stop
Frontier Logo
5:06 pm - 11:59 pm
STL
-
TTN
5h 53m1 stop
$164Frontier
Mon, Jan 5 - Wed, Jan 14
Frontier Logo
9:21 pm - 10:33 pm
TTN
-
STL
26h 12m1 stop
Frontier Logo
5:11 pm - 9:04 pm
STL
-
TTN
26h 53m1 stop
$225Frontier
Wed, Jan 7 - Wed, Jan 14
Frontier Logo
8:00 am - 10:33 pm
TTN
-
STL
15h 33m1 stop
Frontier Logo
5:11 pm - 9:04 pm
STL
-
TTN
26h 53m1 stop
$226Frontier
Sun, Dec 21 - Sun, Jan 4
Frontier Logo
9:59 pm - 10:33 pm
TTN
-
STL
25h 34m1 stop
Frontier Logo
4:27 pm - 8:26 pm
STL
-
TTN
26h 59m1 stop
$288Frontier
Fri, Apr 10 - Sat, Apr 11
Frontier Logo
9:59 pm - 7:13 am
TTN
-
STL
10h 14m1 stop
Frontier Logo
3:30 pm - 11:59 pm
STL
-
TTN
7h 29m1 stop
$347Frontier
Sat, Jan 17 - Sun, Jan 18
Frontier Logo
8:45 am - 10:34 pm
TTN
-
STL
14h 49m1 stop
Frontier Logo
10:06 am - 11:39 pm
STL
-
TTN
12h 33m1 stop
$478Frontier
Tue, Dec 30 - Sat, Jan 3
Frontier Logo
9:59 pm - 10:33 pm
TTN
-
STL
25h 34m1 stop
Frontier Logo
4:27 pm - 9:14 pm
STL
-
TTN
27h 47m1 stop
$581Frontier
Booking Insights

Good to know

Cheapest flight$88
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.

FAQs for booking flights from Trenton to St. Louis

  • What is the cheapest flight from Trenton to St. Louis?

    In the last 3 days, the lowest price for a flight from Trenton to St. Louis was $88 for a one-way ticket and $140 for a round-trip.

  • Do I need a passport to fly between Trenton and St. Louis?

    No, a passport isn't needed to fly from Trenton to St. Louis. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Trenton to St. Louis?

    Trenton and St. Louis are both served by 1 main airport. You will leave Trenton from Trenton-Mercer and will be arriving at Lambert-St Louis.

  • Which aircraft models fly most regularly from Trenton to St. Louis?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Trenton to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Trenton to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Trenton to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Trenton is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Trenton to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Trenton with another airline. Booking your flights between Trenton and STL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Trenton to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Trenton up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Trenton to St. Louis

Information on your arrival and departure airports

Trenton (TTN)
St. Louis (STL)