$129 Cheap Delta flights Seattle (SEA) to Newark Liberty Intl. Airport (EWR)

View $129 flight on Wed, Aug 20, 2025Opens in a new window

  • Plan, book, fly with confidence

  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 30% on select hotels after you book a flight*
  • one key icon
    Earn twice
    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

$129 Cheap Delta flights Seattle (SEA) to Newark Liberty Intl. Airport (EWR)

Prices were available within the past 7 days and start at $129 for one-way flights and $251 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Sep 23 - Wed, Sep 24
SEA
Seattle
EWR
New York
$251 Roundtrip, found 1 hour ago
$251
Roundtrip
found 1 hour ago
Select Delta flight, departing Tue, Sep 23 from Seattle to New York, returning Wed, Sep 24, priced at $251 found 1 hour ago
Flights from Seattle (SEA) to Newark Liberty Intl. Airport (EWR)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Newark Liberty Intl. Airport
Airlines serving
Alaska Airlines, American Airlines, Delta, Spirit Airlines, Sun Country Airlines, United
Popular airline
Alaska Airlines
Distance
2394 mi
Average flight time
9 hours 10 mins

Frequently asked questions

How much is a Delta Air Lines flight from Seattle - Tacoma Intl. Airport (SEA) to Liberty Intl. Airport (EWR)?
Finding cheap one-way Delta Air Lines flights from SEA to EWR from $129 on Expedia is a cinch --- just filter by "Price (lowest to highest)." Or check out our affordable return fares from $251 for your next exciting getaway.**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.
What is the cheapest month to fly from SEA to EWR with Delta Air Lines?
January is one of the most affordable months to get away to Newark with Delta Air Lines. You could also find fantastic deals on one-way and round-trip fares in February.
What is the cheapest time to book flights from Seattle - Tacoma Intl. Airport (SEA) to Liberty Intl. Airport (EWR) with Delta Air Lines?
For cheap Delta Air Lines fares from Seattle - Tacoma Intl. Airport (SEA) to Liberty Intl. Airport (EWR), start searching one to three months before your intended departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also influence the price you pay. Sunday is typically the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your journey on a Sunday.**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.
Does Delta Air Lines fly nonstop from Seattle - Tacoma Intl. Airport (SEA) to Liberty Intl. Airport (EWR)?
Click on the "Nonstop" filter when searching for direct Delta Air Lines flights from SEA to EWR. It's also an easy way to compare other airlines offering the same nonstop trip.
What is the earliest Delta Air Lines flight from SEA to EWR?
Find Delta Air Lines's earliest flights from SEA to EWR by checking the "Morning" and "Early Morning" filters. Not only will you arrive sooner, early departures also have a 20% less chance of being 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.
What airports does Delta Air Lines fly into in Newark?
Board a Delta Air Lines flight from Seattle - Tacoma Intl. Airport (SEA) to Newark, and you'll probably touch down at Liberty Intl. Airport (EWR). This is the airline's main hub here.
Why fly with Delta Air Lines from SEA to EWR?
Delta Air Lines makes traveling from SEA to EWR more comfortable with a rewarding loyalty program and an excellent in-flight experience. You could even start collecting points with Delta SkyMiles. Be sure to join Expedia's free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Delta Air Lines flight from Seattle - Tacoma Intl. Airport (SEA) to Liberty Intl. Airport (EWR)?
It's generally possible to cancel or reschedule your flight, although there may be a charge if you booked over 24 hours ago. Need flexible options? Use Expedia's "Changes included" and "No cancel fee" filters to find flights that won't charge you extra if you have to revise your plans. To make changes, go to "Trips," select your flight and click on "Manage Booking" for more information.

Explore a world of travel with Expedia

*Available to One Key members.