$189 Cheap Flights from Des Moines (DSM) to Trenton (TTN)

View $189 flight on Fri, Oct 31, 2025Opens in a new window

Popular airlines from Des Moines International Airport (DSM) to Trenton–Mercer Airport (TTN)

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Cheap Flights from Des Moines to Trenton (DSM-TTN)

Prices were available within the past 7 days and start at $189 for one-way flights and $265 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, Oct 4 - Tue, Oct 7
DSM
Des Moines
TTN
Trenton
$265 Roundtrip, found 4 hours ago
$265
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Sat, Oct 4 from Des Moines to Trenton, returning Tue, Oct 7, priced at $265 found 4 hours ago
American Airlines
Mon, Oct 6 - Tue, Oct 14
DSM
Des Moines
TTN
Trenton
$294 Roundtrip, found 6 hours ago
$294
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Mon, Oct 6 from Des Moines to Trenton, returning Tue, Oct 14, priced at $294 found 6 hours ago
American Airlines
Sat, Oct 11 - Sat, Oct 18
DSM
Des Moines
TTN
Trenton
$309 Roundtrip, found 5 days ago
$309
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sat, Oct 11 from Des Moines to Trenton, returning Sat, Oct 18, priced at $309 found 5 days ago
American Airlines
Fri, Oct 17 - Sat, Oct 18
DSM
Des Moines
TTN
Trenton
$312 Roundtrip, found 6 days ago
$312
Roundtrip
found 6 days ago
Select American Airlines flight, departing Fri, Oct 17 from Des Moines to Trenton, returning Sat, Oct 18, priced at $312 found 6 days ago
American Airlines
Sat, Oct 4 - Sun, Oct 5
DSM
Des Moines
TTN
Trenton
$313 Roundtrip, found 3 days ago
$313
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Oct 4 from Des Moines to Trenton, returning Sun, Oct 5, priced at $313 found 3 days ago
American Airlines
Fri, Oct 10 - Sun, Oct 12
DSM
Des Moines
TTN
Trenton
$323 Roundtrip, just found
$323
Roundtrip
just found
Select American Airlines flight, departing Fri, Oct 10 from Des Moines to Trenton, returning Sun, Oct 12, priced at $323 just found
American Airlines
Sat, Oct 4 - Tue, Oct 7
DSM
Des Moines
TTN
Trenton
$325 Roundtrip, found 4 hours ago
$325
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Sat, Oct 4 from Des Moines to Trenton, returning Tue, Oct 7, priced at $325 found 4 hours ago
American Airlines
Sat, Oct 18 - Sun, Oct 26
DSM
Des Moines
TTN
Trenton
$334 Roundtrip, found 3 days ago
$334
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Oct 18 from Des Moines to Trenton, returning Sun, Oct 26, priced at $334 found 3 days ago
American Airlines
Wed, Oct 8 - Sun, Oct 12
DSM
Des Moines
TTN
Trenton
$338 Roundtrip, found 4 days ago
$338
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Oct 8 from Des Moines to Trenton, returning Sun, Oct 12, priced at $338 found 4 days ago
Frontier Airlines
Thu, Mar 19 - Sun, Mar 22
DSM
Des Moines
TTN
Trenton
$708 Roundtrip, found 2 hours ago
$708
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Thu, Mar 19 from Des Moines to Trenton, returning Sun, Mar 22, priced at $708 found 2 hours ago

Frequently asked questions

How much does a flight from Des Moines Intl. Airport (DSM) to Mercer Airport (TTN) cost?
Grab a cheap one-way flight from $189 or cheap return flight from $265 from Des Moines Intl. Airport (DSM) to Mercer Airport (TTN) 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 Des Moines Intl. Airport (DSM) to Mercer Airport (TTN)?
October is the cheapest month to fly from DSM to TTN. Avoiding peak travel times is often the key to scoring lower fares.
What is the cheapest airline that flies from Des Moines Intl. Airport (DSM) to Mercer Airport (TTN)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest DSM to TTN flight.
How many flights per day from Des Moines Intl. Airport (DSM) to Mercer Airport (TTN)?
You'll have to book a flight with a layover if you're traveling from Des Moines Intl. Airport (DSM) to Mercer Airport (TTN). Direct flights don't operate daily on this route. However, just filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from DSM to TTN?
Typically you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can change depending on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Des Moines Intl. Airport (DSM) to Mercer Airport (TTN)?
To reach Mercer Airport (TTN) on time, book a flight that leaves Des Moines Intl. Airport (DSM) before 3 PM. The likelihood 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.
What airports do you fly into for Trenton from Des Moines Intl. Airport (DSM)?
If you're flying on a direct flight from Des Moines Intl. Airport (DSM) to Trenton, LaGuardia Airport (LGA) is the only airport you can touch down at.
Is it cheaper to buy a plane ticket from Des Moines Intl. Airport (DSM) to Mercer Airport (TTN) last-minute?
Booking your plane ticket from DSM to TTN just before your journey is usually more expensive. However, if there's some wiggle room with your departure times and dates, you could score a cheap last-minute fare.
Is it cheaper to book a DSM to TTN flight and hotel package?
Securing a DSM to TTN flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Choose from our wide range of accommodations and then add car rentals, activities and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Des Moines Intl. Airport (DSM) to Mercer Airport (TTN)?
In most cases, you can reschedule or cancel your DSM to TTN flight. However, additional fees may apply, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline's fees and policies on flight changes, or if you want more details, go to our Customer Service portal.

Travel information

Travel information

Origin airport
Des Moines Intl.
Destination airport
Mercer
Airlines serving
American Airlines, Frontier Airlines
Roundtrip price
$264
Distance
985 mi

Book with confidence

Book with confidence

Des Moines to Trenton Flights

The cheapest times to fly from Des Moines 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 Des Moines to Trenton are during the month of October. You can find some of the cheapest flights from Des Moines to Trenton with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Des Moines to Trenton

Sunday is one of the best days to book for cheap flights from Des Moines 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 Des Moines 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 Des Moines to Trenton in 2025. You can also book with separate airlines for your outbound and return journeys, from $189 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 Des Moines 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 Des Moines 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.

 

Des Moines to Trenton Flights

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*Available to One Key members.