In terms of precipitation, rainfall in State of Washington ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit State of Washington when rainfall is around 0.7 in.

If weather is an important factor for your trip to State of Washington, 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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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

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

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.

$307+ Cheap Flights from Trenton, NJ to Washington

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Cheap flight deals from Trenton to Washington

One-way

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 August 21, 2026.

Sat 8/296:30 am -

2 stops32h 05m

Deal found 8/17

$307

Sat 8/296:30 am -

3 stops37h 41m

Deal found 8/17

$439

Sun 1/1011:45 am -

2 stops48h 07m

Deal found 8/16

$523

Find flight deals from Trenton to Washington

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Popular in	August
Cheapest in	October
Average price	$541

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Highest demand for flights based on searches. 10% potential increase in price ($50 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).

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Average for round-trip flights in August 2026

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Fly from

Fly to

Route

Depart

Return

Price

Cheapest one-way

Quickest one-way

TrentonPortland

TTN Trenton-Mercer - PDX Portland

TTNPDX

Trenton-Mercer

Sat 8/29

6:30 am-11:35 am

2 stops32h 05m

$307

TrentonPortland

TTN Trenton-Mercer - PDX Portland

TTNPDX

Trenton-Mercer

Sat 8/29

6:30 am-5:11 pm

3 stops37h 41m

$439

TrentonSeattle

TTN Trenton-Mercer - SEA Seattle/Tacoma Intl

TTNSEA

Trenton-Mercer

Sun 1/10

11:45 am-8:52 am

2 stops48h 07m

$523

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/17

Sorted by cheapest first

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.

TTN-PDX

TTN-SEA

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.

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

TTN-USWA

TTN-PDX

TTN-SEA

No data available for this route at this time. Please check back soon.

Related info for your journey

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.

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$307+ 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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Trenton to Washington with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Trenton to Washington

One-way flights from Trenton to WashingtonSearch for one-way flight options from Trenton to Washington. Find affordable one-way fares based on user searches. Data last updated August 21, 2026.

Search for one-way flight options from Trenton to Washington. Find affordable one-way fares based on user searches. Data last updated August 21, 2026.

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Best time to book a flight from Trenton to Washington

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Related info for your journey

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

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

How can I find direct flights from Trenton to Washington?

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Trenton to Washington

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Complete your trip

Complete your trip to Washington by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Trenton to Washington by cabin class

Find flights from Trenton to Washington, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Trenton and Washington flights

Browse other Trenton and Washington flight options. Last updated on August 21, 2026.

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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 August 21, 2026.