$85 Cheap Flights from Trenton (TTN) to Raleigh (RDU)

View $85 flight on Sat, May 17, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Trenton to Raleigh (TTN-RDU)

Prices were available within the past 7 days and start at $85 for one-way flights and $180 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, May 10 - Sat, May 17
TTN
Trenton
RDU
Raleigh
$180 Roundtrip, found 6 hours ago
$180
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Sat, May 10 from Trenton to Raleigh, returning Sat, May 17, priced at $180 found 6 hours ago
Frontier Airlines
Thu, May 15 - Sat, May 24
TTN
Trenton
RDU
Raleigh
$181 Roundtrip, found 2 hours ago
$181
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Thu, May 15 from Trenton to Raleigh, returning Sat, May 24, priced at $181 found 2 hours ago
Frontier Airlines
Thu, May 1 - Sat, May 17
TTN
Trenton
RDU
Raleigh
$190 Roundtrip, found 20 hours ago
$190
Roundtrip
found 20 hours ago
Select Frontier Airlines flight, departing Thu, May 1 from Trenton to Raleigh, returning Sat, May 17, priced at $190 found 20 hours ago
Frontier Airlines
Sat, May 3 - Sat, May 10
TTN
Trenton
RDU
Raleigh
$191 Roundtrip, found 4 hours ago
$191
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Sat, May 3 from Trenton to Raleigh, returning Sat, May 10, priced at $191 found 4 hours ago
Frontier Airlines
Sat, May 24 - Tue, Jun 3
TTN
Trenton
RDU
Raleigh
$192 Roundtrip, just found
$192
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, May 24 from Trenton to Raleigh, returning Tue, Jun 3, priced at $192 just found
Frontier Airlines
Thu, May 15 - Sun, May 18
TTN
Trenton
RDU
Raleigh
$200 Roundtrip, just found
$200
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, May 15 from Trenton to Raleigh, returning Sun, May 18, priced at $200 just found
Frontier Airlines
Mon, Apr 28 - Thu, May 15
TTN
Trenton
RDU
Raleigh
$201 Roundtrip, found 6 hours ago
$201
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Mon, Apr 28 from Trenton to Raleigh, returning Thu, May 15, priced at $201 found 6 hours ago
Frontier Airlines
Sun, May 11 - Mon, May 12
TTN
Trenton
RDU
Raleigh
$210 Roundtrip, just found
$210
Roundtrip
just found
Select Frontier Airlines flight, departing Sun, May 11 from Trenton to Raleigh, returning Mon, May 12, priced at $210 just found
Frontier Airlines
Sat, May 31 - Tue, Jun 10
TTN
Trenton
RDU
Raleigh
$211 Roundtrip, just found
$211
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, May 31 from Trenton to Raleigh, returning Tue, Jun 10, priced at $211 just found
Frontier Airlines
Tue, Jul 8 - Thu, Jul 31
TTN
Trenton
RDU
Raleigh
$212 Roundtrip, found 5 hours ago
$212
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Tue, Jul 8 from Trenton to Raleigh, returning Thu, Jul 31, priced at $212 found 5 hours ago
Flights from Trenton (TTN) to Raleigh (RDU)
Origin airport
Mercer
Destination airport
Raleigh - Durham Intl.
Airlines serving
Frontier Airlines
Roundtrip price
$170
Distance
372 mi

Trenton to Raleigh Flights

The cheapest times to fly from Trenton to Raleigh

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 Raleigh are during the month of May. You can find some of the cheapest flights from Trenton to Raleigh with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Trenton to Raleigh

Sunday is one of the best days to book for cheap flights from Trenton to Raleigh: 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 Raleigh

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 Raleigh in 2025. You can also book with separate airlines for your outbound and return journeys, from $85 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 Raleigh 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 Raleigh 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 Raleigh - Durham Intl. Airport (RDU) cost?
Discover the latest flight deals from TTN to RDU by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from TTN to RDU?
The cheapest flights from TTN to RDU are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Mercer Airport (TTN) to Raleigh - Durham Intl. Airport (RDU)?
There are no direct flights from Trenton, NJ (TTN-Mercer) to Raleigh - Durham Intl. Airport (RDU). However, there are other airports that have nonstop flights. Start your journey at Liberty Intl. Airport (EWR) and travel straight to Raleigh without any detours.
What is the cheapest airline that flies from TTN to RDU?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from TTN to RDU. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Mercer Airport (TTN) to Raleigh - Durham Intl. Airport (RDU)?
Direct flights from Mercer Airport (TTN) to Raleigh - Durham Intl. Airport (RDU) 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 dates and select either “1 Stop” or “2+ Stops.”
What day of the week has the most flights from TTN to RDU?
You’ll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during public holidays or peak travel times.*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 Raleigh - Durham Intl. Airport (RDU)?
Opt for a flight from Mercer Airport (TTN) to Raleigh - Durham Intl. Airport (RDU) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures after this hour have a 22% higher chance of being canceled, on average.**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 Raleigh - Durham Intl. Airport (RDU) last-minute?
Last-minute fares from TTN to RDU are generally more expensive. To secure the best prices, start looking for flights well in advance. That said, if you’re flexible with your travel dates, it’s possible to find a cheap ticket right before you leave.
Is it cheaper to book a TTN to RDU flight and hotel package?
You can save money by booking a TTN to RDU flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it’s easy to manage it all in one convenient place. Once you’ve chosen your ideal accommodations and flights, consider adding extras like car rentals, activities and tours.
Can I cancel or change the date of my flight from Mercer Airport (TTN) to Raleigh - Durham Intl. Airport (RDU)?
It’s generally possible to reschedule or cancel your TTN to RDU flight. However, for bookings made more than 24 hours ago, additional fees may apply. Refer to your airline’s policies in your itinerary to see what changes are allowed and whether any costs are involved. You’ll also find more information on our Customer Service portal.

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*Available to One Key members.