HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Trenton

$236+ Cheap flights from Seattle to Trenton, NJ (SEA - 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 9/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — TTN
Sep 8 — Sep 151
Mon 9/8
Mon 9/15
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Trenton with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Seattle to Trenton

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Trenton (TTN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 3, 2025.

Round-trip from

$241
(CheapOair)

One-way from

$236
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$312
From Seattle/Tacoma Intl to Trenton-Mercer
Search Deals
One-way flight from Seattle/Tacoma Intl to Trenton-Mercer
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($15 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 September 2025
Search Deals

Find flight deals from Seattle to Trenton

Cheapest flights from Seattle to Trenton
Explore the most affordable flight options available from Seattle to Trenton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 3, 2025.

This CheapOair deal was found by Cheapflights users on 9/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/247:00 amSEA - TTN
2 stops23h 32mFrontier
Mon 9/2912:30 pmTTN - SEA
2 stops15h 00mFrontier
Deal found 9/1$241
This CheapOair deal was found by Cheapflights users on 8/31. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/137:00 amSEA - TTN
2 stops23h 32mFrontier
Mon 9/1512:30 pmTTN - SEA
2 stops15h 00mFrontier
Deal found 8/31$277
This CheapOair deal was found by Cheapflights users on 8/31. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/26:12 amSEA - TTN
2 stops26h 22mFrontier
Sun 10/510:30 amTTN - SEA
2 stops17h 00mFrontier
Deal found 8/31$291
This CheapOair deal was found by Cheapflights users on 9/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/247:00 amSEA - TTN
2 stops23h 32mFrontier
Sun 9/2810:30 amTTN - SEA
2 stops17h 00mFrontier
Deal found 9/1$313
This Frontier deal was found by Cheapflights users on 8/31. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/114:36 pmSEA - TTN
2 stops15h 58mFrontier
Mon 9/1512:30 pmTTN - SEA
2 stops15h 00mFrontier
Deal found 8/31$331
This CheapOair deal was found by Cheapflights users on 8/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/286:12 amSEA - TTN
2 stops26h 22mFrontier
Thu 10/210:30 amTTN - SEA
2 stops17h 00mFrontier
Deal found 8/30$359
This CheapOair deal was found by Cheapflights users on 8/31. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/107:00 amSEA - TTN
2 stops23h 32mFrontier
Fri 9/1212:30 pmTTN - SEA
2 stops15h 00mFrontier
Deal found 8/31$417
This CheapOair deal was found by Cheapflights users on 9/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/256:12 amSEA - TTN
2 stops26h 22mFrontier
Sun 9/2810:30 amTTN - SEA
2 stops17h 00mFrontier
Deal found 9/2$478
This CheapOair deal was found by Cheapflights users on 8/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/36:41 amSEA - TTN
2 stops23h 51mFrontier
Fri 9/512:30 pmTTN - SEA
2 stops15h 00mFrontier
Deal found 8/30$872

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Trenton 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 September 3, 2025.
Use the filters below to find and compare flights from Seattle to Trenton that are best for you.

Fly from

Seattle

Fly to

Trenton

Route

Depart

Return

Price

SeattleTrenton

SEA - TTN

SEATTN

Seattle/Tacoma Intl

Wed 9/24

7:00 am-9:32 am

2 stops23h 32m

Trenton-Mercer

Mon 9/29

12:30 pm-12:30 am

2 stops15h 00m

$241

SeattleTrenton

SEA - TTN

SEATTN

Seattle/Tacoma Intl

Sat 9/13

7:00 am-9:32 am

2 stops23h 32m

Trenton-Mercer

Mon 9/15

12:30 pm-12:30 am

2 stops15h 00m

$277

SeattleTrenton

SEA - TTN

SEATTN

Seattle/Tacoma Intl

Thu 10/2

6:12 am-11:34 am

2 stops26h 22m

Trenton-Mercer

Sun 10/5

10:30 am-12:30 am

2 stops17h 00m

$291

SeattleTrenton

SEA - TTN

SEATTN

Seattle/Tacoma Intl

Sat 9/27

7:00 am-9:32 am

2 stops23h 32m

Trenton-Mercer

Fri 10/3

12:30 pm-12:30 am

2 stops15h 00m

$313

SeattleTrenton

SEA - TTN

SEATTN

Seattle/Tacoma Intl

Wed 9/24

7:00 am-9:32 am

2 stops23h 32m

Trenton-Mercer

Sun 9/28

10:30 am-12:30 am

2 stops17h 00m

$313

SeattleTrenton

SEA - TTN

SEATTN

Seattle/Tacoma Intl

Thu 9/11

4:36 pm-11:34 am

2 stops15h 58m

Trenton-Mercer

Mon 9/15

12:30 pm-12:30 am

2 stops15h 00m

$331

SeattleTrenton

SEA - TTN

SEATTN

Seattle/Tacoma Intl

Sun 9/28

6:12 am-11:34 am

2 stops26h 22m

Trenton-Mercer

Thu 10/2

10:30 am-12:30 am

2 stops17h 00m

$359

SeattleTrenton

SEA - TTN

SEATTN

Seattle/Tacoma Intl

Wed 9/10

7:00 am-9:32 am

2 stops23h 32m

Trenton-Mercer

Fri 9/12

12:30 pm-12:30 am

2 stops15h 00m

$417

SeattleTrenton

SEA - TTN

SEATTN

Seattle/Tacoma Intl

Thu 9/25

6:12 am-11:34 am

2 stops26h 22m

Trenton-Mercer

Sun 9/28

10:30 am-12:30 am

2 stops17h 00m

$478

SeattleTrenton

SEA - TTN

SEATTN

Seattle/Tacoma Intl

Wed 12/3

10:00 pm-6:37 pm

2 stops17h 37m

$679

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/2

Best time to book a flight from Seattle to Trenton

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

What is the cheapest month to book a flight from Seattle to Trenton, New Jersey?

Currently, January is the cheapest month in which you can book a flight from Seattle to Trenton, New Jersey (average of $73). Flying from Seattle 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 SEA to TTN?

Find hourly flight availability from Seattle 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 September 3, 2025.

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

Related info for your journey

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

  • How long is the flight from Seattle to Trenton, New Jersey?

    Departing from Seattle to Trenton, New Jersey will take you 23h 32m. The distance from Seattle to Trenton, New Jersey is about 2377 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle 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 Seattle to Trenton, New Jersey?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Trenton, New Jersey (average of $73). Flying from Seattle 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.

See more FAQs

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 Seattle to Trenton

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to John F Kennedy Intl flights
Seattle to Newark flights
Seattle to LaGuardia flights
Portland to John F Kennedy Intl flights
Seattle to Philadelphia flights
Portland to Newark flights
Portland to LaGuardia flights
Portland to Philadelphia flights
Spokane to John F Kennedy Intl flights
Spokane to LaGuardia flights
Spokane to Newark flights
Pasco to John F Kennedy Intl flights
Pasco to Newark flights
Pasco to LaGuardia flights
Spokane to Philadelphia flights
Bellingham to Newark flights
Bellingham to John F Kennedy Intl flights
Walla Walla to John F Kennedy Intl flights
Walla Walla to Newark flights
Pasco to Philadelphia flights
Bellingham to LaGuardia flights
Yakima to John F Kennedy Intl flights
Pullman to Newark flights
Pullman to John F Kennedy Intl flights
Yakima to Newark flights
Yakima to Philadelphia flights
Wenatchee to Philadelphia flights
Seattle to Atlantic City flights
Pullman to LaGuardia flights
Portland to Atlantic City flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.