$69 Cheap Flights from Trenton (TTN) to Detroit (DTW)

View $69 flight on Sun, Mar 1, 2026Opens in a new window

Popular airlines from Trenton–Mercer Airport (TTN) to Detroit Metropolitan Wayne County Airport (DTW)

Cheap Flights from Trenton to Detroit (TTN-DTW)

Prices were available within the past 7 days and start at $69 for one-way flights and $139 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, Jan 17 - Tue, Jan 20
TTN
Trenton
DTW
Detroit
$139 Roundtrip, found 2 days ago
$139
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sat, Jan 17 from Trenton to Detroit, returning Tue, Jan 20, priced at $139 found 2 days ago
American Airlines
Thu, Feb 5 - Sun, Feb 8
TTN
Trenton
DTW
Detroit
$149 Roundtrip, found 2 days ago
$149
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu, Feb 5 from Trenton to Detroit, returning Sun, Feb 8, priced at $149 found 2 days ago
Frontier Airlines
Sat, Feb 28 - Tue, Mar 10
TTN
Trenton
DTW
Detroit
$155 Roundtrip, found 14 hours ago
$155
Roundtrip
found 14 hours ago
Select Frontier Airlines flight, departing Sat, Feb 28 from Trenton to Detroit, returning Tue, Mar 10, priced at $155 found 14 hours ago
American Airlines
Sat, Jan 17 - Tue, Jan 20
TTN
Trenton
DTW
Detroit
$169 Roundtrip, found 2 days ago
$169
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sat, Jan 17 from Trenton to Detroit, returning Tue, Jan 20, priced at $169 found 2 days ago
Frontier Airlines
Mon, Mar 9 - Wed, Mar 11
TTN
Trenton
DTW
Detroit
$172 Roundtrip, found 7 hours ago
$172
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Mon, Mar 9 from Trenton to Detroit, returning Wed, Mar 11, priced at $172 found 7 hours ago
Frontier Airlines
Thu, Feb 26 - Mon, Mar 2
TTN
Trenton
DTW
Detroit
$176 Roundtrip, found 2 hours ago
$176
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Thu, Feb 26 from Trenton to Detroit, returning Mon, Mar 2, priced at $176 found 2 hours ago
Frontier Airlines
Thu, Jan 15 - Sat, Jan 17
TTN
Trenton
DTW
Detroit
$181 Roundtrip, found 1 day ago
$181
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, Jan 15 from Trenton to Detroit, returning Sat, Jan 17, priced at $181 found 1 day ago
Frontier Airlines
Thu, Feb 26 - Fri, Mar 6
TTN
Trenton
DTW
Detroit
$190 Roundtrip, found 19 hours ago
$190
Roundtrip
found 19 hours ago
Select Frontier Airlines flight, departing Thu, Feb 26 from Trenton to Detroit, returning Fri, Mar 6, priced at $190 found 19 hours ago
Frontier Airlines
Thu, Jan 15 - Tue, Jan 20
TTN
Trenton
DTW
Detroit
$191 Roundtrip, found 2 days ago
$191
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Thu, Jan 15 from Trenton to Detroit, returning Tue, Jan 20, priced at $191 found 2 days ago
Frontier Airlines
Sun, Dec 21 - Thu, Dec 25
TTN
Trenton
DTW
Detroit
$192 Roundtrip, found 3 days ago
$192
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Sun, Dec 21 from Trenton to Detroit, returning Thu, Dec 25, priced at $192 found 3 days ago

Alternative airports near Detroit

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

Select flight to Detroit Metropolitan Wayne County DTW. Cheapest option available. Average driving time to city center is 26 minutes. Flights from $328
DTW
Detroit Metropolitan Wayne County
Cheapest
Average driving time to city center26 min
Flights from $328
Flights from Trenton (TTN) to Detroit (DTW)
Origin airport
Mercer
Destination airport
Detroit Metropolitan Wayne County
Airlines serving
American Airlines, Frontier Airlines
Roundtrip price
$138
Distance
462 mi

Trenton to Detroit Flights

The cheapest times to fly from Trenton to Detroit

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

 

The best time to book a flight from Trenton to Detroit

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

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 Detroit in 2026. You can also book with separate airlines for your outbound and return journeys, from $69 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 Detroit 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 Detroit 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 Detroit Metropolitan Wayne County Airport (DTW) cost?
Get a cheap one-way flight from $69 or cheap return flight from $139 from Mercer Airport (TTN) to Detroit Metropolitan Wayne County Airport (DTW) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Mercer Airport (TTN) to Detroit Metropolitan Wayne County Airport (DTW)?
Planning your getaway for January is a great way to save, as it's the cheapest month for flights between TTN and DTW. You'll often find the lowest prices during off-peak months.
Which airlines fly direct from Mercer Airport (TTN) to Detroit Metropolitan Wayne County Airport (DTW)?
There aren't any direct flights from Trenton, NJ (TTN-Mercer) to Detroit Metropolitan Wayne County Airport (DTW). However, you'll find other airports that offer nonstop flights. Hop on your plane at Liberty Intl. Airport (EWR) and head straight to Detroit without a layover.
What is the cheapest airline that flies from Mercer Airport (TTN) to Detroit Metropolitan Wayne County Airport (DTW)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest TTN to DTW flight.
How many flights per day from Mercer Airport (TTN) to Detroit Metropolitan Wayne County Airport (DTW)?
Nonstop flights from Mercer Airport (TTN) to Detroit Metropolitan Wayne County Airport (DTW) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel details and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from TTN to DTW?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary based on various factors, such as the carrier and season.*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 Detroit Metropolitan Wayne County Airport (DTW)?
To avoid possible delays on the Mercer Airport (TTN) to Detroit Metropolitan Wayne County Airport (DTW) route, travel before 3 PM. Departures after this hour 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 Detroit Metropolitan Wayne County Airport (DTW) last-minute?
Holding off until right before your break to book a flight from TTN to DTW generally means paying more. While it's possible to find some last-minute deals, there's no guarantee. Allow some flexibility in your schedule to boost your chances of landing a bargain.
Is it cheaper to book a TTN to DTW flight and hotel package?
You'll generally save money by securing a TTN to DTW flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one place. After selecting your preferred flights and accommodations, consider adding extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Mercer Airport (TTN) to Detroit Metropolitan Wayne County Airport (DTW)?
If you booked your TTN to DTW flight in the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the fare type 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, head to our Customer Service portal for further details.

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*Available to One Key members.