$162 Cheap Flights from Trenton (TTN) to Greenville (GSP)

View $162 flight on Thu, Nov 27, 2025Opens in a new window

Popular airlines from Trenton–Mercer Airport (TTN) to Greenville-Spartanburg Intl. Airport (GSP)

Cheap Flights from Trenton to Greenville (TTN-GSP)

Prices were available within the past 7 days and start at $162 for one-way flights and $370 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, Jan 10 - Sat, Jan 24
TTN
Trenton
GSP
Greenville
$370 Roundtrip, found 11 hours ago
$370
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Sat, Jan 10 from Trenton to Greenville, returning Sat, Jan 24, priced at $370 found 11 hours ago
American Airlines
Thu, Nov 27 - Wed, Dec 3
TTN
Trenton
GSP
Greenville
$375 Roundtrip, found 8 hours ago
$375
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Thu, Nov 27 from Trenton to Greenville, returning Wed, Dec 3, priced at $375 found 8 hours ago
American Airlines
Wed, Jan 14 - Sat, Jan 17
TTN
Trenton
GSP
Greenville
$380 Roundtrip, found 5 days ago
$380
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Jan 14 from Trenton to Greenville, returning Sat, Jan 17, priced at $380 found 5 days ago
American Airlines
Wed, Jan 14 - Sat, Jan 17
TTN
Trenton
GSP
Greenville
$380 Roundtrip, found 5 days ago
$380
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Jan 14 from Trenton to Greenville, returning Sat, Jan 17, priced at $380 found 5 days ago
American Airlines
Wed, Dec 24 - Mon, Dec 29
TTN
Trenton
GSP
Greenville
$398 Roundtrip, found 9 hours ago
$398
Roundtrip
found 9 hours ago
Select American Airlines flight, departing Wed, Dec 24 from Trenton to Greenville, returning Mon, Dec 29, priced at $398 found 9 hours ago
American Airlines
Sat, Nov 15 - Wed, Nov 19
TTN
Trenton
GSP
Greenville
$407 Roundtrip, found 11 hours ago
$407
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Sat, Nov 15 from Trenton to Greenville, returning Wed, Nov 19, priced at $407 found 11 hours ago
American Airlines
Wed, Dec 24 - Mon, Dec 29
TTN
Trenton
GSP
Greenville
$408 Roundtrip, found 1 day ago
$408
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Dec 24 from Trenton to Greenville, returning Mon, Dec 29, priced at $408 found 1 day ago
American Airlines
Wed, Nov 26 - Thu, Nov 27
TTN
Trenton
GSP
Greenville
$408 Roundtrip, found 3 days ago
$408
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Nov 26 from Trenton to Greenville, returning Thu, Nov 27, priced at $408 found 3 days ago
American Airlines
Wed, Jan 14 - Sat, Jan 17
TTN
Trenton
GSP
Greenville
$411 Roundtrip, found 5 days ago
$411
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Jan 14 from Trenton to Greenville, returning Sat, Jan 17, priced at $411 found 5 days ago
American Airlines
Wed, Dec 24 - Thu, Dec 25
TTN
Trenton
GSP
Greenville
$418 Roundtrip, found 1 day ago
$418
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Dec 24 from Trenton to Greenville, returning Thu, Dec 25, priced at $418 found 1 day ago

Alternative airports near Greenville

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Greenville-Spartanburg Intl. GSP. Cheapest option available. Average driving time to city center is 18 minutes. Flights from $532
GSP
Greenville-Spartanburg Intl.
Cheapest
Average driving time to city center18 min
Flights from $532
Flights from Trenton (TTN) to Greenville (GSP)
Origin airport
Mercer
Destination airport
Greenville-Spartanburg Intl.
Airlines serving
American Airlines
Roundtrip price
$369
Distance
549 mi

Trenton to Greenville Flights

The cheapest times to fly from Trenton to Greenville

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Trenton to Greenville are during the month of January. You can find some of the cheapest flights from Trenton to Greenville with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Trenton to Greenville

Sunday is one of the best days to book for cheap flights from Trenton to Greenville: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Trenton to Greenville

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Trenton to Greenville in 2025. You can also book with separate airlines for your outbound and return journeys, from $162 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Trenton to Greenville flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Trenton to Greenville airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Mercer Airport (TTN) to Greenville-Spartanburg Intl. Airport (GSP) cost?
Secure a cheap one-way flight from $162 or cheap return flight from $370 from Mercer Airport (TTN) to Greenville-Spartanburg Intl. Airport (GSP) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Mercer Airport (TTN) to Greenville-Spartanburg Intl. Airport (GSP)?
January is the cheapest month to fly from TTN to GSP. Timing your trip outside of the busy season is often the key to finding better fares.
Which airlines fly direct from Mercer Airport (TTN) to Greenville-Spartanburg Intl. Airport (GSP)?
There's no direct route from Trenton, NJ (TTN-Mercer) to Greenville-Spartanburg Intl. Airport (GSP). However, you can find other airports that offer nonstop flights. Hop on your plane at Liberty Intl. Airport (EWR) and travel straight to Greenville without any detours.
What is the cheapest airline that flies from Mercer Airport (TTN) to Greenville-Spartanburg Intl. Airport (GSP)?
To find the cheapest airline flying from TTN to GSP, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Mercer Airport (TTN) to Greenville-Spartanburg Intl. Airport (GSP)?
Direct flights from Mercer Airport (TTN) to Greenville-Spartanburg Intl. Airport (GSP) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel details and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from TTN to GSP?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can vary depending on a range of factors, including the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Mercer Airport (TTN) to Greenville-Spartanburg Intl. Airport (GSP)?
To avoid potential delays on the Mercer Airport (TTN) to Greenville-Spartanburg Intl. Airport (GSP) route, aim to fly before 3 PM. Later departures are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Mercer Airport (TTN) to Greenville-Spartanburg Intl. Airport (GSP) last-minute?
Holding off until just before your trip to book a ticket from TTN to GSP often results in higher prices. While it's possible to find some last-minute discounts, they're not always guaranteed. Be flexible with your itinerary for a better chance of landing a bargain.
Is it cheaper to book a TTN to GSP flight and hotel package?
Opting for a TTN to GSP flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Pick from our extensive range of hotels and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Mercer Airport (TTN) to Greenville-Spartanburg Intl. Airport (GSP)?
If you reserved your TTN to GSP flight in the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more information.

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*Available to One Key members.