$238+ 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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
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 June 12, 2025.
Round-trip from | $468 (Frontier) |
|---|---|
One-way from | $238 (Frontier) |
Popular in | December |
Cheapest in | January |
Average price | $467 |
Find flight deals from Seattle to Trenton
Cheapest flights from Seattle to TrentonExplore 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 June 12, 2025.
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 June 12, 2025.
This Frontier deal was found by Cheapflights users on 6/11. 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.
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 June 12, 2025.
Use the filters below to find and compare flights from Seattle to Trenton that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
SeattleTrenton
SEA - TTN
SEATTN
Seattle/Tacoma Intl
Thu 8/21
4:40 pm-9:14 am
2 stops13h 34m
Trenton-Mercer
Mon 8/25
9:59 am-12:34 am
2 stops17h 35m
SeattleTrenton
SEA - TTN
SEATTN
Seattle/Tacoma Intl
Fri 9/5
7:00 pm-10:47 am
2 stops12h 47m
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.
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 June 12, 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.
Rainfall in Trenton by month
Plan your trip to Trenton by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Trenton, New Jersey ranges from 2.9 - 4.8 inches per month. July is typically the wettest month, when rainfall can reach 4.8 in. February is typically the driest time to visit Trenton, New Jersey when rainfall is around 2.9 in.
Temperature in Trenton by month
Plan your trip to Trenton by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Trenton, New Jersey, 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 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).
Reviews of airlines servicing Trenton
Get insights into the airlines that provide service to Trenton. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Trenton. Reviews last updated June 12, 2025.
Overall
Entertainment
Comfort
Food
Boarding
Crew
Reviews
Paulina,Jun 2025
MSY - DEN
Overall
Entertainment
Comfort
Food
Boarding
Crew
Reviews
Paulina,Jun 2025
MSY - DEN