$110 Cheap United flights Newark Liberty Intl. Airport (EWR) to Seattle (SEA)

Use the “Price (lowest to highest)” filter on Expedia to look for cheap United Airlines return flights from $225 from EWR to SEA. Affordable one-way tickets from $110 are also available.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

January is one of the most affordable months to travel to Seattle with United Airlines. You could also find excellent prices on one-way and round-trip tickets in February.

Look for affordable United Airlines flights from Liberty Intl. Airport (EWR) to Seattle - Tacoma Intl. Airport (SEA) one to three months before your day of departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare type and journey, the ideal day to book a domestic flight is generally Sunday and the most expensive tends to be Monday. Passengers who book on a Sunday can save 6% on average compared to those who book on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

United Airlines has direct flights from Liberty Intl. Airport (EWR) to Seattle - Tacoma Intl. Airport (SEA), with 14 departures each week. Just apply the “Nonstop” and “Airline” filters while searching on Expedia to find all direct United Airlines flights to SEA.

Take off from Liberty Intl. Airport (EWR) for Seattle - Tacoma Intl. Airport (SEA) on a nonstop United Airlines flight, and you’ll be airborne for about 6h 18m.

If you’re looking for flexibility, Thursday offers the most choice for United Airlines flights from Liberty Intl. Airport (EWR) to Seattle - Tacoma Intl. Airport (SEA). You can pick from 2 different departures.

The earliest United Airlines flight from EWR to SEA departs at 7:59AM UTC-5, touching down at 11:16AM UTC-8. If you prefer to jet off later, the last United Airlines flight leaves EWR at 6:40PM UTC-5 and touches down at SEA at 10:00PM UTC-8. Flying before midday is often a good option as morning flights are less likely to be canceled.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Seattle - Tacoma Intl. Airport (SEA) is the main Seattle gateway for United Airlines flights from Liberty Intl. Airport (EWR).

A rewarding loyalty program and the chance to rack up points through United Mileage Plus are the start of the reasons to jet off from EWR to SEA with United Airlines. Plus, when you sign up to our One Key™ program, you can earn OneKeyCash™* alongside United Airlines’s loyalty program earnings. It’s yours to spend on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

You’ll likely be on a Boeing 737 MAX 9 or a Boeing 737 MAX 8 when flying United Airlines from Liberty Intl. Airport (EWR) to Seattle - Tacoma Intl. Airport (SEA). However, keep in mind that a different aircraft may be assigned depending on operational requirements.

It’s usually possible to cancel or change your flight, although there may be additional charges if you booked over 24 hours ago. Need to keep your options open? Use our “No cancel fee” and “Changes included” filters to find flights that won’t charge extra if you have to alter your plans. To update your itinerary, head to “Trips,” select your flight and click on “Manage Booking” for more information.