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Trenton

$250+ 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 9/20. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — TTN
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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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 11, 2025.

Round-trip from

$272
(CheapOair)

One-way from

$250
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$312
From Seattle/Tacoma Intl to Trenton-Mercer
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One-way flight from Seattle/Tacoma Intl to Trenton-Mercer
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Highest demand for flights based on searches. 3% potential increase in price ($15 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 11, 2025.

This CheapOair deal was found by Cheapflights users on 9/10. 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 10/47:00 amSEA - TTN
2 stops23h 32mFrontier
Mon 10/612:30 pmTTN - SEA
2 stops26h 37mFrontier
Deal found 9/10$272
This CheapOair deal was found by Cheapflights users on 9/9. 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
Fri 9/2612:30 pmTTN - SEA
2 stops15h 00mFrontier
Deal found 9/9$282
This Frontier deal was found by Cheapflights users on 9/11. 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 9/254:36 pmSEA - TTN
2 stops15h 58mFrontier
Mon 9/2912:30 pmTTN - SEA
2 stops15h 00mFrontier
Deal found 9/11$365
This CheapOair deal was found by Cheapflights users on 9/11. 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 9/146:12 amSEA - TTN
2 stops26h 22mFrontier
Sun 9/2110:30 amTTN - SEA
2 stops17h 00mFrontier
Deal found 9/11$550
This CheapOair deal was found by Cheapflights users on 9/11. 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
Sun 9/2110:30 amTTN - SEA
2 stops17h 00mFrontier
Deal found 9/11$740

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 11, 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

Sat 10/4

7:00 am-9:32 am

2 stops23h 32m

Trenton-Mercer

Mon 10/6

12:30 pm-12:07 pm

2 stops26h 37m

$272

SeattleTrenton

SEA - TTN

SEATTN

Seattle/Tacoma Intl

Wed 9/24

7:00 am-9:32 am

2 stops23h 32m

Trenton-Mercer

Fri 9/26

12:30 pm-12:30 am

2 stops15h 00m

$282

SeattleTrenton

SEA - TTN

SEATTN

Seattle/Tacoma Intl

Thu 9/25

4:36 pm-11:34 am

2 stops15h 58m

Trenton-Mercer

Mon 9/29

12:30 pm-12:30 am

2 stops15h 00m

$365

SeattleTrenton

SEA - TTN

SEATTN

Seattle/Tacoma Intl

Sat 9/20

9:39 pm-11:00 am

2 stops34h 21m

$250

SeattleTrenton

SEA - TTN

SEATTN

Seattle/Tacoma Intl

Sat 9/20

9:39 pm-11:00 am

3 stops34h 21m

$367

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

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 11, 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.

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