$528 Cheap Flights from Trenton (TTN) to Frankfurt (FRA)

View $528 flight on Wed, Feb 4, 2026Opens in a new window

Popular airlines from Trenton–Mercer Airport (TTN) to Frankfurt Airport (FRA)

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Cheap Flights from Trenton to Frankfurt (TTN-FRA)

Prices were available within the past 7 days and start at $528 for one-way flights and $1,028 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, Feb 4 - Mon, Feb 9
TTN
Trenton
FRA
Frankfurt
$1,028 Roundtrip, found 5 days ago
$1,028
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Feb 4 from Trenton to Frankfurt, returning Mon, Feb 9, priced at $1,028 found 5 days ago
American Airlines
Wed, Feb 4 - Mon, Feb 9
TTN
Trenton
FRA
Frankfurt
$1,033 Roundtrip, found 5 days ago
$1,033
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Feb 4 from Trenton to Frankfurt, returning Mon, Feb 9, priced at $1,033 found 5 days ago
American Airlines
Wed, Apr 22 - Mon, Apr 27
TTN
Trenton
FRA
Frankfurt
$1,126 Roundtrip, found 5 days ago
$1,126
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Apr 22 from Trenton to Frankfurt, returning Mon, Apr 27, priced at $1,126 found 5 days ago
American Airlines
Wed, Apr 22 - Mon, Apr 27
TTN
Trenton
FRA
Frankfurt
$1,134 Roundtrip, found 5 days ago
$1,134
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Apr 22 from Trenton to Frankfurt, returning Mon, Apr 27, priced at $1,134 found 5 days ago
American Airlines
Wed, Apr 22 - Mon, Apr 27
TTN
Trenton
FRA
Frankfurt
$1,194 Roundtrip, found 5 days ago
$1,194
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Apr 22 from Trenton to Frankfurt, returning Mon, Apr 27, priced at $1,194 found 5 days ago
American Airlines
Wed, Apr 22 - Mon, Apr 27
TTN
Trenton
FRA
Frankfurt
$1,226 Roundtrip, found 5 days ago
$1,226
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Apr 22 from Trenton to Frankfurt, returning Mon, Apr 27, priced at $1,226 found 5 days ago
American Airlines
Wed, Apr 22 - Mon, Apr 27
TTN
Trenton
FRA
Frankfurt
$1,234 Roundtrip, found 5 days ago
$1,234
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Apr 22 from Trenton to Frankfurt, returning Mon, Apr 27, priced at $1,234 found 5 days ago
American Airlines
Wed, Apr 22 - Mon, Apr 27
TTN
Trenton
FRA
Frankfurt
$1,294 Roundtrip, found 5 days ago
$1,294
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Apr 22 from Trenton to Frankfurt, returning Mon, Apr 27, priced at $1,294 found 5 days ago
American Airlines
Wed, Apr 22 - Mon, Apr 27
TTN
Trenton
FRA
Frankfurt
$1,320 Roundtrip, found 5 days ago
$1,320
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Apr 22 from Trenton to Frankfurt, returning Mon, Apr 27, priced at $1,320 found 5 days ago
American Airlines
Wed, Apr 22 - Mon, Apr 27
TTN
Trenton
FRA
Frankfurt
$1,325 Roundtrip, found 5 days ago
$1,325
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Apr 22 from Trenton to Frankfurt, returning Mon, Apr 27, priced at $1,325 found 5 days ago
Flights from Trenton (TTN) to Frankfurt (FRA)
Origin airport
Mercer
Destination airport
Frankfurt Intl.
Roundtrip price
$1,027
Distance
3903 mi

Trenton to Frankfurt Flights

The cheapest times to fly from Trenton to Frankfurt

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

 

The best time to book a flight from Trenton to Frankfurt

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

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 Frankfurt in 2026. You can also book with separate airlines for your outbound and return journeys, from $528 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 Frankfurt 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 Frankfurt 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 Frankfurt Intl. Airport (FRA) cost?
Grab a cheap one-way flight from $528 or cheap return flight from $1,028 from Mercer Airport (TTN) to Frankfurt Intl. Airport (FRA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Mercer Airport (TTN) to Frankfurt Intl. Airport (FRA)?
The cheapest month to fly from TTN to FRA is February, when there's less demand. Off-peak season is typically when airlines offer lower prices between these airports.
Which airlines fly direct from Mercer Airport (TTN) to Frankfurt Intl. Airport (FRA)?
Although Trenton, NJ (TTN-Mercer) doesn't offer any direct flights to Frankfurt Intl. Airport (FRA), other airports have nonstop options. Jetting off from Liberty Intl. Airport (EWR) will get you to Frankfurt without any layovers.
What is the cheapest airline that flies from Mercer Airport (TTN) to Frankfurt Intl. Airport (FRA)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest TTN to FRA flight.
How many flights per day from Mercer Airport (TTN) to Frankfurt Intl. Airport (FRA)?
There aren't any daily direct flights available from Mercer Airport (TTN) to Frankfurt Intl. Airport (FRA). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be on your way in no time at all.
What day of the week has the most flights from TTN to FRA?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can vary depending on a range of factors, including the season 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 Frankfurt Intl. Airport (FRA)?
To avoid possible delays on the Mercer Airport (TTN) to Frankfurt Intl. Airport (FRA) route, fly before 3 PM. Departures after this hour have a 22% higher chance of cancellation.**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 Frankfurt Intl. Airport (FRA) last-minute?
Booking your ticket from TTN to FRA just before your getaway is typically more expensive. But if there's some wiggle room with your departure dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book a TTN to FRA flight and hotel package?
Compared with arranging flights and hotels separately, booking a TTN to FRA flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one easy place takes the hassle out of travel planning. Simply pick your flights and choose from our wide range of hotels, then tailor your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from Mercer Airport (TTN) to Frankfurt Intl. Airport (FRA)?
Typically, you're able to cancel or reschedule your TTN to FRA flight. However, additional fees may apply, especially if you booked over 24 hours ago. Double-check your itinerary for the airline's fees and policies on flight changes, or if you want further details, head to our Customer Service portal.

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*Available to One Key members.