$122 Cheap Flights from Trenton (TTN) to Washington (DCA)

View $122 flight on Sat, Jan 10, 2026Opens in a new window

Popular airlines from Trenton–Mercer Airport (TTN) to Ronald Reagan Washington National Airport (DCA)

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Cheap Flights from Trenton to Washington (TTN-DCA)

Prices were available within the past 7 days and start at $122 for one-way flights and $177 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, Dec 3 - Mon, Dec 8
TTN
Trenton
DCA
Washington
$177 Roundtrip, found 6 hours ago
$177
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Wed, Dec 3 from Trenton to Washington, returning Mon, Dec 8, priced at $177 found 6 hours ago
American Airlines
Thu, Nov 13 - Mon, Nov 17
TTN
Trenton
DCA
Washington
$182 Roundtrip, found 1 day ago
$182
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Nov 13 from Trenton to Washington, returning Mon, Nov 17, priced at $182 found 1 day ago
American Airlines
Thu, Nov 13 - Sat, Nov 15
TTN
Trenton
DCA
Washington
$187 Roundtrip, found 1 day ago
$187
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Nov 13 from Trenton to Washington, returning Sat, Nov 15, priced at $187 found 1 day ago
American Airlines
Wed, Nov 12 - Wed, Nov 19
TTN
Trenton
DCA
Washington
$192 Roundtrip, found 1 hour ago
$192
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Wed, Nov 12 from Trenton to Washington, returning Wed, Nov 19, priced at $192 found 1 hour ago
American Airlines
Mon, Nov 10 - Mon, Nov 17
TTN
Trenton
DCA
Washington
$193 Roundtrip, found 1 day ago
$193
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon, Nov 10 from Trenton to Washington, returning Mon, Nov 17, priced at $193 found 1 day ago
American Airlines
Fri, Nov 7 - Mon, Nov 17
TTN
Trenton
DCA
Washington
$197 Roundtrip, found 2 days ago
$197
Roundtrip
found 2 days ago
Select American Airlines flight, departing Fri, Nov 7 from Trenton to Washington, returning Mon, Nov 17, priced at $197 found 2 days ago
American Airlines
Fri, Nov 7 - Mon, Nov 10
TTN
Trenton
DCA
Washington
$202 Roundtrip, found 2 days ago
$202
Roundtrip
found 2 days ago
Select American Airlines flight, departing Fri, Nov 7 from Trenton to Washington, returning Mon, Nov 10, priced at $202 found 2 days ago
American Airlines
Wed, Nov 12 - Sat, Nov 15
TTN
Trenton
DCA
Washington
$207 Roundtrip, found 4 hours ago
$207
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Wed, Nov 12 from Trenton to Washington, returning Sat, Nov 15, priced at $207 found 4 hours ago
American Airlines
Fri, Oct 31 - Sat, Nov 1
TTN
Trenton
DCA
Washington
$217 Roundtrip, found 6 days ago
$217
Roundtrip
found 6 days ago
Select American Airlines flight, departing Fri, Oct 31 from Trenton to Washington, returning Sat, Nov 1, priced at $217 found 6 days ago
American Airlines
Thu, Nov 6 - Thu, Nov 13
TTN
Trenton
DCA
Washington
$221 Roundtrip, found 1 day ago
$221
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Nov 6 from Trenton to Washington, returning Thu, Nov 13, priced at $221 found 1 day ago

Alternative airports near Washington

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

Select flight to Ronald Reagan Washington National DCA. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $192
DCA
Ronald Reagan Washington National
CheapestClosest
Average driving time to city center8 min
Flights from $192

Frequently asked questions

How much does a flight from Mercer Airport (TTN) to Ronald Reagan Washington National Airport (DCA) cost?
Secure a cheap one-way flight from $122 or cheap return flight from $177 from Mercer Airport (TTN) to Ronald Reagan Washington National Airport (DCA) 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 Ronald Reagan Washington National Airport (DCA)?
Planning your getaway for December can help you save, as it's the cheapest month for flights between TTN and DCA. You'll typically find the lowest prices during off-peak months.
Which airlines fly direct from Mercer Airport (TTN) to Ronald Reagan Washington National Airport (DCA)?
While Trenton, NJ (TTN-Mercer) doesn't have any direct flights to Ronald Reagan Washington National Airport (DCA), other airports have nonstop routes. Traveling from Liberty Intl. Airport (EWR) will get you to Washington without any layovers.
What is the cheapest airline that flies from Mercer Airport (TTN) to Ronald Reagan Washington National Airport (DCA)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll fly you from TTN to DCA. Then, sort your results by "Price (lowest to highest)" to snag a good deal.
How many flights per day from Mercer Airport (TTN) to Ronald Reagan Washington National Airport (DCA)?
There are no daily direct flights from Mercer Airport (TTN) to Ronald Reagan Washington National Airport (DCA). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be cruising above the clouds in no time at all.
What day of the week has the most flights from TTN to DCA?
Typically you'll have the most choice when it comes to flights on a Friday. Tuesdays are often the quietest.* However, 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 Mercer Airport (TTN) to Ronald Reagan Washington National Airport (DCA)?
Opt for a flight from Mercer Airport (TTN) to Ronald Reagan Washington National Airport (DCA) 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 Ronald Reagan Washington National Airport (DCA) last-minute?
Holding off until right before your break to book a ticket from TTN to DCA generally means paying more. While you may come across some last-minute deals, they aren't always guaranteed. Allow some flexibility in your schedule to boost your chances of getting a bargain.
Is it cheaper to book a TTN to DCA flight and hotel package?
You can save money by securing a TTN to DCA 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 convenient place. After choosing your preferred flights and accommodations, consider other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Mercer Airport (TTN) to Ronald Reagan Washington National Airport (DCA)?
If you booked your TTN to DCA flight in the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you want more information.

Travel information

Origin airport
Mercer
Destination airport
Ronald Reagan Washington National
Airlines serving
American Airlines
Roundtrip price
$177
Distance
154 mi

Book with confidence

Trenton to Washington Flights

The cheapest times to fly from Trenton to Washington

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

 

The best time to book a flight from Trenton to Washington

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

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 Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $122 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 Washington 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 Washington 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 Washington Flights

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