In terms of precipitation, rainfall in Seattle 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 Seattle when rainfall is around 0.7 in.

If weather is an important factor for your trip to Seattle, 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 SEA?

When flying from Trenton, New Jersey to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Most accurate provider : When it comes to deals on Trenton, New Jersey-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Trenton, New Jersey-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Trenton, New Jersey-Seattle flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Trenton, New Jersey-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Trenton, New Jersey-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

How can I find direct flights from Trenton to Seattle?

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

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

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

$206+ Cheap Flights from Trenton, NJ to Seattle

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Cheap flight deals from Trenton to Seattle

One-way

One-way flights from Trenton to Seattle
Search for one-way flight options from Trenton to Seattle. Find affordable one-way fares based on user searches. Data last updated July 7, 2026.

Thu 8/2012:13 pm

TTN

SEA

3 stops49h 26m

Multiple Airlines

Deal found 7/6

$206

Thu 8/205:18 pm

TTN

SEA

2 stops43h 01m

Frontier

Deal found 7/6

$232

Find flight deals from Trenton to Seattle

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Popular in	July
Cheapest in	October
Average price	$509

Provider with most accurate pricing for Trenton-Mercer-Seattle/Tacoma Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Trenton-Mercer-Seattle/Tacoma Intl flights.

Search Deals

Highest demand for flights based on searches. 18% potential increase in price ($90 potential increase over avg. RT price).

Search Deals

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

Search Deals

Average for round-trip flights in July 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest one-way

TrentonSeattle

TTN - SEA

TTNSEA

Trenton-Mercer

Thu 8/20

12:13 pm-10:39 am

3 stops49h 26m

$206

Quickest one-way

TrentonSeattle

TTN - SEA

TTNSEA

Trenton-Mercer

Thu 8/20

5:18 pm-9:19 am

2 stops43h 01m

$232

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/6

Sorted by cheapest first

Compare providers for flights from Trenton to Seattle

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Trenton to Seattle in July.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Trenton, New Jersey-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Trenton, New Jersey-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Trenton, New Jersey-Seattle flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Trenton, New Jersey-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Trenton, New Jersey-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Trenton to Seattle

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

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.

Related info for your journey

Can I find deals for flights from Trenton to Seattle that include hotel bookings?
Yes. In addition to deals on Trenton to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Trenton to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Trenton to Seattle.
Can I find deals for business class flights from Trenton to Seattle?
Yes. Cheapflights offers flight deals from Trenton to Seattle 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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$206+ Cheap flights from Trenton, NJ to Seattle (TTN - SEA)

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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Trenton to Seattle 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 Seattle

One-way flights from Trenton to SeattleSearch for one-way flight options from Trenton to Seattle. Find affordable one-way fares based on user searches. Data last updated July 7, 2026.

Search for one-way flight options from Trenton to Seattle. Find affordable one-way fares based on user searches. Data last updated July 7, 2026.

Find flight deals from Trenton to Seattle

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Popular in

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

Compare providers for flights from Trenton to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Trenton to Seattle in July.

Best time to book a flight from Trenton to Seattle

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

Related info for your journey

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

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

How can I find direct flights from Trenton to Seattle?

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

Traveling to a place near Seattle?

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Alternative routes for Trenton to Seattle

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Complete your trip

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

Search flights from Trenton to Seattle by cabin class

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

Trenton and Seattle flights

Browse other Trenton and Seattle flight options. Last updated on July 7, 2026.

Other flights from Trenton

Browse through other flights departing from Trenton. Flights are based on user searches made on Cheapflights and were last updated on July 7, 2026.

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One-way flights from Trenton to Seattle
Search for one-way flight options from Trenton to Seattle. Find affordable one-way fares based on user searches. Data last updated July 7, 2026.