What airlines fly to Seattle?

Alaska Airlines, United Airlines and American Airlines are the top three most popular airlines that fly to Seattle from Trenton, New Jersey according to our data. Alaska Airlines is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 10 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Trenton-Mercer Airport to Seattle/Tacoma Intl Airport?

Prices for flights from Trenton-Mercer Airport to Seattle/Tacoma Intl Airport are refreshed on a daily basis.

How old do you have to be to fly from Trenton-Mercer Airport to Seattle/Tacoma Intl Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Trenton-Mercer Airport to Seattle/Tacoma Intl Airport.

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$280 Cheap Flights from Trenton to Seattle in 2025/26

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Find the cheapest flights from Trenton, New Jersey to Seattle

Round-trip

One-way

Last minute

Cheap round-trip flights

10:30 am - 12:30 amTTN-SEA

17h 00m2 stops

6:12 am - 11:34 amSEA-TTN

26h 22m2 stops

$280Frontier

Find Deal

Thu, Oct 2 - Sun, Oct 5

10:30 am - 12:30 amTTN-SEA

17h 00m2 stops

6:12 am - 11:34 amSEA-TTN

26h 22m2 stops

$288Frontier

Find Deal

Thu, Oct 2 - Sun, Oct 5

Frontier flights from Trenton, New Jersey to Seattle

Our best Frontier deals on Trenton, New Jersey to Seattle flight tickets

Frontier

Oct 2

TTN10:30 amTrenton-Mercer

17h 00m

2 stops

SEA12:30 amSeattle/Tacoma Intl

Oct 5

SEA6:12 amSeattle/Tacoma Intl

26h 22m

2 stops

TTN11:34 amTrenton-Mercer

$280

Find similar

Frontier

Oct 2

TTN10:30 amTrenton-Mercer

17h 00m

2 stops

SEA12:30 amSeattle/Tacoma Intl

Oct 5

SEA6:12 amSeattle/Tacoma Intl

26h 22m

2 stops

TTN11:34 amTrenton-Mercer

$288

Find similar

Frontier

Sep 26

TTN12:30 pmTrenton-Mercer

15h 00m

2 stops

SEA12:30 amSeattle/Tacoma Intl

Sep 27

SEA7:00 amSeattle/Tacoma Intl

23h 32m

2 stops

TTN9:32 amTrenton-Mercer

$373

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

TrentonSeattle

TTN - SEA

TTNSEA

Trenton-Mercer

Thu 10/2

10:30 am-12:30 am

2 stops17h 00m

Seattle/Tacoma Intl

Sun 10/5

6:12 am-11:34 am

2 stops26h 22m

$280

TrentonSeattle

TTN - SEA

TTNSEA

Trenton-Mercer

Thu 10/2

10:30 am-12:30 am

2 stops17h 00m

Seattle/Tacoma Intl

Sun 10/5

6:12 am-11:34 am

2 stops26h 22m

$288

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Trenton, New Jersey to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Trenton, New Jersey is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $469. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Trenton, New Jersey because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $569.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Trenton, New Jersey in the evening is the least expensive time of day to depart. momondo users have found prices as low as $402 when looking at flights departing in the evening. Flights to Seattle are more costly at noon, with an average ticket price of $566. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from Trenton, New Jersey to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Trenton, New Jersey to Seattle according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Trenton, New Jersey to Seattle (TTN to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Trenton, New Jersey to Seattle

Direct flights	None

There are no direct flights from Trenton, New Jersey to Seattle. There are no popular flight routes from Trenton, New Jersey to Seattle.

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How far is Trenton-Mercer to Seattle/Tacoma Intl by plane?
The straight-line distance from Trenton-Mercer to Seattle/Tacoma Intl is 2381.8 mi. Flights usually cover this in 17h 00m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Trenton-Mercer Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Trenton-Mercer Airport to Seattle/Tacoma Intl Airport are refreshed on a daily basis.
How old do you have to be to fly from Trenton-Mercer Airport to Seattle/Tacoma Intl Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Trenton-Mercer Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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Why use momondo?

Why should I use momondo to find a flight deal from Trenton to Seattle?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Trenton to Seattle. momondo saves you time and could save you money on your trip.

Can I find flights from Trenton to Seattle with flexible booking policies on momondo?

momondo does allow users to show only those flights to Seattle from Trenton which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Trenton to Seattle?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seattle from Trenton.

I’m not ready to book a flight from Trenton to Seattle right now. Can momondo alert me if prices change?

Price alerts on flights to Seattle from Trenton are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.