$500 Cheap Flights from Trenton (TTN) to Copenhagen (CPH)

View $500 flight on Mon, Feb 16, 2026Opens in a new window

Popular airlines from Trenton–Mercer Airport (TTN) to Copenhagen Airport, Kastrup (CPH)

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Cheap Flights from Trenton to Copenhagen (TTN-CPH)

Prices were available within the past 7 days and start at $500 for one-way flights and $537 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Aug 18 - Tue, Aug 25
TTN
Trenton
CPH
Copenhagen
$537 Roundtrip, found 5 days ago
$537
Roundtrip
found 5 days ago
Select American Airlines flight, departing Tue, Aug 18 from Trenton to Copenhagen, returning Tue, Aug 25, priced at $537 found 5 days ago
American Airlines
Sun, Sep 6 - Sat, Sep 19
TTN
Trenton
CPH
Copenhagen
$657 Roundtrip, found 1 day ago
$657
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sun, Sep 6 from Trenton to Copenhagen, returning Sat, Sep 19, priced at $657 found 1 day ago
American Airlines
Thu, May 21 - Thu, Jun 4
TTN
Trenton
CPH
Copenhagen
$717 Roundtrip, found 3 days ago
$717
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, May 21 from Trenton to Copenhagen, returning Thu, Jun 4, priced at $717 found 3 days ago
American Airlines
Sun, May 31 - Tue, Jun 9
TTN
Trenton
CPH
Copenhagen
$735 Roundtrip, found 3 days ago
$735
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sun, May 31 from Trenton to Copenhagen, returning Tue, Jun 9, priced at $735 found 3 days ago
American Airlines
Tue, Aug 18 - Tue, Aug 25
TTN
Trenton
CPH
Copenhagen
$737 Roundtrip, found 5 days ago
$737
Roundtrip
found 5 days ago
Select American Airlines flight, departing Tue, Aug 18 from Trenton to Copenhagen, returning Tue, Aug 25, priced at $737 found 5 days ago
American Airlines
Sat, Aug 8 - Wed, Aug 19
TTN
Trenton
CPH
Copenhagen
$760 Roundtrip, found 11 hours ago
$760
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Sat, Aug 8 from Trenton to Copenhagen, returning Wed, Aug 19, priced at $760 found 11 hours ago
American Airlines
Thu, Jul 23 - Sat, Aug 15
TTN
Trenton
CPH
Copenhagen
$777 Roundtrip, found 5 days ago
$777
Roundtrip
found 5 days ago
Select American Airlines flight, departing Thu, Jul 23 from Trenton to Copenhagen, returning Sat, Aug 15, priced at $777 found 5 days ago
American Airlines
Sun, May 31 - Mon, Jun 8
TTN
Trenton
CPH
Copenhagen
$820 Roundtrip, found 3 days ago
$820
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sun, May 31 from Trenton to Copenhagen, returning Mon, Jun 8, priced at $820 found 3 days ago
American Airlines
Sun, Sep 6 - Sat, Sep 19
TTN
Trenton
CPH
Copenhagen
$857 Roundtrip, found 1 day ago
$857
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sun, Sep 6 from Trenton to Copenhagen, returning Sat, Sep 19, priced at $857 found 1 day ago
American Airlines
Thu, May 21 - Thu, Jun 4
TTN
Trenton
CPH
Copenhagen
$917 Roundtrip, found 3 days ago
$917
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, May 21 from Trenton to Copenhagen, returning Thu, Jun 4, priced at $917 found 3 days ago

Frequently asked questions

How much does a flight from Mercer Airport (TTN) to Kastrup Airport (CPH) cost?
Snag a cheap one-way flight from $500 or cheap return flight from $537 from Mercer Airport (TTN) to Kastrup Airport (CPH) 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 Kastrup Airport (CPH)?
August is the least expensive month to fly from TTN to CPH. Traveling during an off-peak travel window is often the key to finding better fares.
Which airlines fly direct from Mercer Airport (TTN) to Kastrup Airport (CPH)?
Although Trenton, NJ (TTN-Mercer) doesn't have any direct flights to Kastrup Airport (CPH), other airports have nonstop routes. Flying from Liberty Intl. Airport (EWR) will get you to Copenhagen without any layovers.
What is the cheapest airline that flies from Mercer Airport (TTN) to Kastrup Airport (CPH)?
Use the filters on Expedia to compare airlines and find the cheapest carrier that'll fly you from TTN to CPH. Then, sort your results by "Price (lowest to highest)" to score a good deal.
How many flights per day from Mercer Airport (TTN) to Kastrup Airport (CPH)?
There aren't any daily nonstop flights departing from Mercer Airport (TTN) to Kastrup Airport (CPH). But you can opt for flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be cruising above the clouds before you know it.
What day of the week has the most flights from TTN to CPH?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can vary based on a range of factors, such as 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 Kastrup Airport (CPH)?
Book a flight from Mercer Airport (TTN) to Kastrup Airport (CPH) that leaves before 3 PM to reduce the risk of cancellations. Departures after this time are on average 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 Kastrup Airport (CPH) last-minute?
Waiting until right before your break to book a flight from TTN to CPH generally means paying more. While you may come across some last-minute offers, there's no guarantee. Allow some flexibility in your schedule to boost your chances of snagging a bargain.
Is it cheaper to book a TTN to CPH flight and hotel package?
Securing a TTN to CPH flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Pick from our impressive range of accommodations 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 Kastrup Airport (CPH)?
It's generally possible to reschedule or cancel your TTN to CPH flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Mercer
Destination airport
Kastrup
Airlines serving
American Airlines
Roundtrip price
$536
Distance
3900 mi

Book with confidence

Trenton to Copenhagen Flights

The cheapest times to fly from Trenton to Copenhagen

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

 

The best time to book a flight from Trenton to Copenhagen

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

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 Copenhagen in 2025. You can also book with separate airlines for your outbound and return journeys, from $500 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 Copenhagen 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 Copenhagen 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.

 

Trenton to Copenhagen Flights

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*Available to One Key members.