In terms of precipitation, rainfall in Trenton, New Jersey ranges from 2.9 - 4.8 inches per month. July is typically the wettest month, when rainfall can reach 4.8 in. February is typically the driest time to visit Trenton, New Jersey when rainfall is around 2.9 in.

If weather is an important factor for your trip to Trenton, New Jersey, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

How far in advance should I book a flight from State of Washington to Trenton, New Jersey?

Travelers have found it’s best to book a flight 61 days in advance to save up to 107% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 61 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from State of Washington to Trenton, New Jersey 1-2 weeks in advance for as low as $418, or $682 for flights within the next 24 hours.

What is the cheapest month to fly from State of Washington to Trenton, New Jersey?

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, January can be a great choice for travel to Trenton, New Jersey. Flights to Trenton, New Jersey from State of Washington in January are about $398 on average during January, but can be found for as low as $230.

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

If you book a flight to Trenton from Washington, you will be flying to Trenton-Mercer, which is the city’s only airport. Trenton-Mercer (TTN) is located 4.8 mi from the center of Trenton.

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

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

How can I find direct flights from Washington to Trenton?

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

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

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

$176+ Flights from Washington to Trenton, NJ

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Cheap flight deals from Washington to Trenton

Round-trip from	$341 (CheapOair)
One-way from	$176 (CheapOair)
Popular in	December
Cheapest in	January
Average price	$469

From Washington to Trenton-Mercer

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One-way flight from Washington to Trenton-Mercer

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Highest demand for flights based on searches. 1% potential increase in price ($5 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Find flight deals from Washington to Trenton

Cheapest flights from Washington to Trenton
Explore the most affordable flight options available from Washington to Trenton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.

Sat 8/236:25 amSEA - TTN

2 stops25h 00mFrontier

Mon 9/19:59 amTTN - SEA

2 stops40h 02mFrontier

Deal found 6/30

$341

Best flights from Washington to Trenton
Discover carefully curated flight deals from Washington to Trenton that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 2, 2025.

Sat 8/236:25 amSEA - TTN

2 stops25h 00mFrontier

Mon 9/19:59 amTTN - SEA

2 stops40h 02mFrontier

Deal found 6/30

$341

Last-minute flights from Washington to Trenton
Discover last-minute flight deals from Washington to Trenton. Data last updated July 2, 2025 and is based on user searches.

Sat 7/127:48 pmSEA - TTN

2 stops12h 18mFrontier

Fri 7/1812:48 pmTTN - SEA

2 stops14h 46mFrontier

Deal found 7/1

$610

Sat 8/236:25 amSEA - TTN

2 stops25h 00mFrontier

Mon 9/19:59 amTTN - SEA

2 stops40h 02mFrontier

Deal found 6/30

$341

One-way flights from Washington to Trenton
Search for one-way flight options from Washington to Trenton. Find affordable one-way fares based on user searches. Data last updated July 2, 2025.

Sat 9/67:00 amSEA - TTN

2 stops23h 32mFrontier

Deal found 6/30

$176

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington to Trenton that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleTrenton

SEA - TTN

SEATTN

Seattle/Tacoma Intl

Sat 8/23

6:25 am-10:25 am

2 stops25h 00m

Trenton-Mercer

Mon 9/1

9:59 am-11:01 pm

2 stops40h 02m

$341

SeattleTrenton

SEA - TTN

SEATTN

Seattle/Tacoma Intl

Sat 9/6

7:00 am-9:32 am

2 stops23h 32m

$176

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Best time to book a flight from Washington to Trenton

Have a flexible travel schedule? Discover the best time to fly to Trenton from Washington 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 Washington to Trenton

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

Currently, January is the cheapest month in which you can book a flight from State of Washington to Trenton, New Jersey (average of $73). Flying from State of Washington to Trenton, New Jersey in June is currently the most expensive (average of $153). 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.

What is the cheapest time of day to fly from WA to TTN?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from State of Washington to Trenton, New Jersey as you normally would.

Reviews of airlines servicing Trenton

Read through reviews of airlines operating flights from Washington to Trenton, such as Frontier. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Frontier

5.9

Fair

3,290 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Jun 2025

TTN - TPA

TTN is a small airport for Frontier. Drop off is easy as is parking. The location is remote so there is zero traffic. The place could use a renovation but for the price you pay it is not necessary. Good-Staff is very friendly. Flight left on time. Bad- run down, deplaning/boarding on the tarmac. I got wet on the stairs outside of the plane while waiting to board.

Frontier

5.9

Fair

3,290 reviews

Frontier

5.9

Fair

3,290 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Jun 2025

TTN - TPA

Related info for your journey

What airport do you fly into for flights to Trenton from Washington?
If you book a flight to Trenton from Washington, you will be flying to Trenton-Mercer, which is the city’s only airport. Trenton-Mercer (TTN) is located 4.8 mi from the center of Trenton.
Can I find deals for flights from Washington to Trenton that include hotel bookings?
Yes. In addition to deals on Washington to Trenton flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington to Trenton?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Trenton.
Can I find deals for business class flights from Washington to Trenton?
Yes. Cheapflights offers flight deals from Washington to Trenton 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 State of Washington to Trenton, New Jersey?
Currently, January is the cheapest month in which you can book a flight from State of Washington to Trenton, New Jersey (average of $73). Flying from State of Washington to Trenton, New Jersey in June is currently the most expensive (average of $153). 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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$176+ Cheap flights from Washington to Trenton, NJ (TTN)

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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Washington to Trenton with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Washington to Trenton

Keep the following information in mind while searching for Washington to Trenton flight deals. Data was last updated July 2, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Washington to Trenton

Cheapest flights from Washington to TrentonExplore the most affordable flight options available from Washington to Trenton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.

Explore the most affordable flight options available from Washington to Trenton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington to Trenton that are best for you.

Best time to book a flight from Washington to Trenton

Have a flexible travel schedule? Discover the best time to fly to Trenton from Washington with our price prediction graph.

Cheapflights Insights

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

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

What is the cheapest time of day to fly from WA to TTN?

Find hourly flight availability from Washington to Trenton. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 2, 2025.

Reviews of airlines servicing Trenton

Read through reviews of airlines operating flights from Washington to Trenton, such as Frontier. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Washington to Trenton. 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 into for flights to Trenton from Washington?

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

How can I find direct flights from Washington to Trenton?

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington to Trenton

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Cheapest flights from Washington to Trenton
Explore the most affordable flight options available from Washington to Trenton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.