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$364+ Cheap flights from Trenton, NJ (TTN) to Washington

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/14. Fares are subject to change and may not be available on all flights or dates of travel.
TTN — SEA
Mar 6 — Mar 131
Fri 3/6
Fri 3/13
1 adult, Economy
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Cheap flight deals from Trenton to Washington

One-way flights from Trenton to Washington
Search for one-way flight options from Trenton to Washington. Find affordable one-way fares based on user searches. Data last updated February 4, 2026.

This Trip.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/148:00 am
TTN
-
SEA
2 stops29h 55m
Frontier
Deal found 2/3$364

Find flight deals from Trenton to Washington

Keep the following information in mind while searching for Trenton to Washington flight deals. Data was last updated February 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

December

Cheapest in

October

Average price

$357
Provider with most accurate pricing for New York (NYC)-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for New York (NYC)-Seattle/Tacoma Intl flights.
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($14 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Trenton to Washington that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 4, 2026.
Use the filters below to find and compare flights from Trenton to Washington that are best for you.

Fly from

Trenton

Fly to

Washington

Route

Depart

Return

Price

TrentonSeattle

TTN - SEA

TTNSEA

Trenton-Mercer

Sat 2/14

8:00 am-10:55 am

2 stops29h 55m

$364

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

Best time to book a flight from Trenton to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Trenton with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Trenton to Washington

What is the cheapest month to book a flight from Trenton, New Jersey to State of Washington?

Currently, October is the cheapest month in which you can book a flight from Trenton, New Jersey to State of Washington (average of $148). Flying from Trenton, New Jersey to State of Washington in July is currently the most expensive (average of $224). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Trenton to Washington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Trenton to Washington?

    Most people fly from Trenton-Mercer (TTN) if they book a flight from Trenton to Washington. Trenton-Mercer is conveniently located just 4.8 mi from Trenton’s city center.

  • Can I find deals for flights from Trenton to Washington that include hotel bookings?

    Yes. In addition to deals on Trenton to Washington flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Trenton to Washington?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Trenton to Washington.

  • Can I find deals for business class flights from Trenton to Washington?

    Yes. Cheapflights offers flight deals from Trenton to Washington by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Trenton, New Jersey to State of Washington?

    Currently, October is the cheapest month in which you can book a flight from Trenton, New Jersey to State of Washington (average of $148). Flying from Trenton, New Jersey to State of Washington in July is currently the most expensive (average of $224). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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