$90 Cheap Flights from Trenton (TTN) to St. Louis (STL)

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

Prices were available within the past 7 days and start at $90 for one-way flights and $168 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Flights from Trenton (TTN) to St. Louis (STL)
Origin airport
Mercer
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Frontier Airlines
Roundtrip price
$168
Distance
834 mi

Trenton to St. Louis Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from Trenton to St. Louis offer the perfect respite. Not only does exploring St. Louis provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap airfare means you won’t bust your budget. So no matter whether your ideal itinerary involves flying one way, non-stop, or round trip, you’re bound to find flights that match your schedule on Expedia, and at prices that won’t shock your wallet.

Bagging a cheap flight from Trenton to St. Louis may mean more dollars to spend on for one-of-a-kind souvenirs when you arrive, but it doesn’t mean you have to skimp on your travel experience, as Expedia offers a sizzling selection of cheap airlines that’ll put you in your happy place on their planes, whether that’s getting lost in a hair-raising airport thriller, dreaming on the passing landscape over a glass of bubbly, or jotting down your vacation bucket list at 38,000 feet. There’s also bound to be plenty of opportunities to snap a few photos of the high life that will make your friends green with envy. After all, enjoying the journey is part of the fun.

With so many affordable flights and so many wonderful adventures awaiting you, there’s no reason to put off booking a fantastic flight from to today. So don’t leave it to the last minute to make your dream trip a reality: pack your bags with your go-to travel accessories, put together your list of must-see attractions and can’t-miss activities, and get ready to broaden your horizons – with Expedia, the wonders of St. Louis are only a plane trip away. Book your travel arrangements with us today!

If you would like to book flights to St. Louis more flexibly many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to St. Louis is $90 now!

Frequently asked questions

How much is a one-way flight from Trenton--Mercer Airport to STL?
You can find one-way Trenton flights to St. Louis starting from $86. This data is based on the best fare found on Expedia for this journey leaving across the next three months and was updated on May 23 2024 and has not changed since. This fare is for an Frontier Airlines service, heading off from TTN on August 15 2024 and landing at Lambert-St. Louis Intl. Airport (STL).
Is it cheaper to buy a plane ticket from Trenton--Mercer Airport to STL last minute?
Booking your journey from Trenton–Mercer Airport to Lambert-St. Louis Intl. Airport (STL) at the last minute could save you a tidy sum if you luck out and find an awesome deal. However, fares generally don’t get cheaper as the departure date nears. If you procrastinate, flights could also be booked solid or the best seats taken (because who wants the middle seat?). If you don’t want to hedge your bets, book well in advance of when you want to leave. In fact, Expedia has some of the biggest deals up to 12 months in advance. If your preferred carrier hasn’t released tickets yet, check back regularly as offers are updated on Expedia constantly.
What is the cheapest airline flying from TTN to Lambert Field in the next 90 days?
Based on airfares found on Expedia with a departure date within the next 90 days, Frontier Airlines is the cheapest airline flying from Trenton to St. Louis. The fare between these destinations starts from $86. This flight jets off from Mercer Airport (TTN) on August 15 2024 and lands at Lambert Field. The price was updated on May 23 2024 and has not changed since.
What's the cheapest price for a flight from Trenton--Mercer Airport to Lambert-St. Louis Intl. Airport (STL) next month?
Grab a one-way flight from Trenton to St. Louis for $86. This is the cheapest ticket price for this journey departing in the next month. It’s an Frontier Airlines flight setting off from TTN on June 17 2024 and arriving at STL. The price was correct as of May 23 2024 and has not changed since. It was found after looking at all available flights on Expedia within the next 30 days.
What airports do you fly into for Central United States from Princeton?
To journey from Princeton to Central United States, you can fly into Lambert-St. Louis Intl. Airport (STL), Spirit of St. Louis Airport (SUS) or St. Louis Downtown Airport (CPS). Hop off the plane at Lambert-St. Louis Intl. Airport (STL) and you’ll be approximately 180 mi east of the heart of Central United States. Whichever hub you decide on, Expedia will help you get your hands on an incredible flight deal.
Can I change the date of my flight from TTN to Lambert-St. Louis Intl. Airport (STL)?
Sometimes life gets in the way of plans, so Expedia is here to help make amending your trip as easy as possible. To start, find your TTN to St. Louis Lambert International Airport itinerary through the Expedia Trips portal and look up the ticket rules to see if you can make changes. If you purchased your airfare in the last 24 hours, some airlines will allow you to cancel for free and book new flights. If you booked your fare more than 24 hours ago, get in touch with us through our Customer Service portal to find out what your options are.
Trenton nearby Airports
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