$165 Cheap Flights from Erie (ERI) to Trenton (TTN)

View $165 flight on Fri, Oct 31, 2025Opens in a new window

Popular airlines from Erie, PA (ERI-Erie Intl.) to Trenton–Mercer Airport (TTN)

Cheap Flights from Erie to Trenton (ERI-TTN)

Prices were available within the past 7 days and start at $165 for one-way flights and $419 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, Feb 7 - Sun, Feb 8
ERI
Erie
TTN
Trenton
$419 Roundtrip, found 3 days ago
$419
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Feb 7 from Erie to Trenton, returning Sun, Feb 8, priced at $419 found 3 days ago
American Airlines
Thu, Nov 13 - Mon, Nov 17
ERI
Erie
TTN
Trenton
$439 Roundtrip, found 20 hours ago
$439
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Thu, Nov 13 from Erie to Trenton, returning Mon, Nov 17, priced at $439 found 20 hours ago
American Airlines
Sat, Feb 7 - Sun, Feb 8
ERI
Erie
TTN
Trenton
$474 Roundtrip, found 3 days ago
$474
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Feb 7 from Erie to Trenton, returning Sun, Feb 8, priced at $474 found 3 days ago
American Airlines
Thu, Nov 13 - Mon, Nov 17
ERI
Erie
TTN
Trenton
$489 Roundtrip, found 20 hours ago
$489
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Thu, Nov 13 from Erie to Trenton, returning Mon, Nov 17, priced at $489 found 20 hours ago
American Airlines
Thu, Oct 23 - Sun, Oct 26
ERI
Erie
TTN
Trenton
$504 Roundtrip, found 6 days ago
$504
Roundtrip
found 6 days ago
Select American Airlines flight, departing Thu, Oct 23 from Erie to Trenton, returning Sun, Oct 26, priced at $504 found 6 days ago
American Airlines
Thu, Nov 13 - Mon, Nov 17
ERI
Erie
TTN
Trenton
$524 Roundtrip, found 20 hours ago
$524
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Thu, Nov 13 from Erie to Trenton, returning Mon, Nov 17, priced at $524 found 20 hours ago
American Airlines
Thu, Sep 25 - Sun, Sep 28
ERI
Erie
TTN
Trenton
$534 Roundtrip, found 2 days ago
$534
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu, Sep 25 from Erie to Trenton, returning Sun, Sep 28, priced at $534 found 2 days ago
American Airlines
Thu, Oct 2 - Sun, Oct 5
ERI
Erie
TTN
Trenton
$554 Roundtrip, found 5 days ago
$554
Roundtrip
found 5 days ago
Select American Airlines flight, departing Thu, Oct 2 from Erie to Trenton, returning Sun, Oct 5, priced at $554 found 5 days ago
American Airlines
Sat, Oct 18 - Sun, Oct 19
ERI
Erie
TTN
Trenton
$559 Roundtrip, found 4 days ago
$559
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sat, Oct 18 from Erie to Trenton, returning Sun, Oct 19, priced at $559 found 4 days ago
American Airlines
Fri, Nov 21 - Mon, Nov 24
ERI
Erie
TTN
Trenton
$564 Roundtrip, found 6 days ago
$564
Roundtrip
found 6 days ago
Select American Airlines flight, departing Fri, Nov 21 from Erie to Trenton, returning Mon, Nov 24, priced at $564 found 6 days ago
Flights from Erie (ERI) to Trenton (TTN)
Origin airport
Erie Intl.
Destination airport
Mercer
Airlines serving
American Airlines
Roundtrip price
$419
Distance
305 mi

Erie to Trenton Flights

The cheapest times to fly from Erie to Trenton

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

 

The best time to book a flight from Erie to Trenton

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

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 Erie to Trenton in 2025. You can also book with separate airlines for your outbound and return journeys, from $165 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 Erie to Trenton 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 Erie to Trenton 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 Erie Intl. Airport (ERI) to Mercer Airport (TTN) cost?
Secure a cheap one-way flight from $165 or cheap return flight from $419 from Erie Intl. Airport (ERI) to Mercer Airport (TTN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Erie Intl. Airport (ERI) to Mercer Airport (TTN)?
Planning your getaway for February can help you save, as it's the cheapest month for flights between ERI and TTN. You'll typically find the lowest fares during off-peak months.
What is the cheapest airline that flies from Erie Intl. Airport (ERI) to Mercer Airport (TTN)?
To find the cheapest airline flying from ERI to TTN, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Erie Intl. Airport (ERI) to Mercer Airport (TTN)?
There are no daily direct flights available from Erie Intl. Airport (ERI) to Mercer Airport (TTN). But you can book flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be cruising above the clouds in no time.
What day of the week has the most flights from ERI to TTN?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Erie Intl. Airport (ERI) to Mercer Airport (TTN)?
To touch down at Mercer Airport (TTN) on time, select a flight that leaves Erie Intl. Airport (ERI) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Erie Intl. Airport (ERI) to Mercer Airport (TTN) last-minute?
Last-minute fares from ERI to TTN are usually more expensive. For the lowest rates, start searching for flights well ahead of time. That being said, if you're flexible with your travel plans, it's possible to find a cheap ticket just before your departure.
Is it cheaper to book an ERI to TTN flight and hotel package?
You'll generally save money by booking an ERI to TTN flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one convenient place. After selecting your ideal flights and accommodations, consider other add-ons like activities, car rentals and tours.
Can I cancel or change the date of my flight from Erie Intl. Airport (ERI) to Mercer Airport (TTN)?
If you reserved your ERI to TTN flight in the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more details.

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*Available to One Key members.