EWR - SEA

C$ 145 Find Cheap Flights from Newark Liberty Airport to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Newark to Seattle departing on 4/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Newark to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Newark to Seattle, as well as popular online travel agencies
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Expert advice
Flight Deals

Cheap Flights from Newark to Seattle (EWR-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Newark to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Newark to Seattle

Fri, 7 Nov - Fri, 14 Nov
United Airlines Logo
7:28 p.m. - 10:44 p.m.EWR-SEA
6h 16mdirect
United Airlines Logo
11:50 p.m. - 7:58 a.m.SEA-EWR
5h 08mdirect
C$ 283United Airlines
Find Deal
Wed, 12 Nov - Wed, 12 Nov
United Airlines Logo
9:20 a.m. - 12:39 p.m.EWR-SEA
6h 19mdirect
United Airlines Logo
11:52 p.m. - 8:00 a.m.SEA-EWR
5h 08mdirect
C$ 284United Airlines
Find Deal
Tue, 18 Nov - Tue, 2 Dec
Alaska Airlines Logo
7:30 a.m. - 10:40 a.m.EWR-SEA
6h 10mdirect
Alaska Airlines Logo
6:06 a.m. - 2:29 p.m.SEA-EWR
5h 23mdirect
C$ 290Alaska Airlines
Find Deal
Sat, 8 Nov - Mon, 10 Nov
United Airlines Logo
6:59 p.m. - 10:17 p.m.EWR-SEA
6h 18mdirect
United Airlines Logo
10:53 a.m. - 8:52 p.m.SEA-EWR
6h 59m1 stop
C$ 297United Airlines
Find Deal
Fri, 5 Dec - Mon, 8 Dec
Alaska Airlines Logo
7:59 p.m. - 11:19 p.m.EWR-SEA
6h 20mdirect
Alaska Airlines Logo
6:06 a.m. - 2:29 p.m.SEA-EWR
5h 23mdirect
C$ 304Alaska Airlines
Find Deal
Thu, 13 Nov - Tue, 2 Dec
Alaska Airlines Logo
7:30 a.m. - 10:40 a.m.EWR-SEA
6h 10mdirect
Alaska Airlines Logo
6:06 a.m. - 2:29 p.m.SEA-EWR
5h 23mdirect
C$ 311Alaska Airlines
Find Deal
Tue, 17 Feb - Fri, 20 Feb
Alaska Airlines Logo
6:25 p.m. - 9:40 p.m.EWR-SEA
6h 15mdirect
Alaska Airlines Logo
9:30 p.m. - 3:32 p.m.SEA-EWR
15h 02m1 stop
C$ 318Alaska Airlines
Find Deal
Tue, 10 Mar - Wed, 11 Mar
Delta Logo
4:00 p.m. - 12:16 a.m.EWR-SEA
11h 16m1 stop
Delta Logo
11:05 p.m. - 9:04 a.m.SEA-EWR
6h 59m1 stop
C$ 359Delta
Find Deal
Sat, 13 Dec - Sun, 14 Dec
Delta Logo
11:55 a.m. - 5:00 p.m.EWR-SEA
8h 05m1 stop
Delta Logo
11:59 p.m. - 10:59 a.m.SEA-EWR
8h 00m1 stop
C$ 380Delta
Find Deal
Tue, 11 Nov - Sat, 15 Nov
Delta Logo
7:00 p.m. - 12:01 a.m.EWR-SEA
8h 01m1 stop
Delta Logo
6:00 a.m. - 4:39 p.m.SEA-EWR
7h 39m1 stop
C$ 387Delta
Find Deal

Everything you should know

Our travellers' advice
AI-generated summary based on content written by travel experts and KAYAK users
Alaska's Premium Class offers priority boarding perks.
Bring food onboard; Alaska's snacks may not suffice.
Expert advice
Expert advice
+1
+1
Expert advice
Expert advice
+1
Top airlines
United Airlines
Cheapest • from C$ 283 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 29% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 29% price drop
August
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
C$ 283
Overall average: C$ 552
United Airlines
Fri 7/11Fri 14/11
EWR - SEA • Direct
Cheapest one-way flights
C$ 144
Typical prices: C$ 193-C$ 459
United Airlines
Tue 4/11
EWR - SEA • Direct
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Booking Insights

KAYAK's insights & trends for Newark to Seattle flights

Get data-powered insights and trends into flights from Newark to Seattle to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Newark Liberty Airport to Seattle?

The average price of all round-trip flights from Newark Airport to Seattle clicked on KAYAK for each day over the last 12 months.

For Newark Liberty Airport to Seattle, Friday is the cheapest day to fly on average and Monday is the most expensive. Flying from Seattle back to Newark Liberty Airport, the best deals are generally found on Friday, with Monday being the most expensive.

What is the cheapest month to fly from Newark Airport to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Newark Airport to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Newark Airport to Seattle is October, where tickets cost C$ 415 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is C$ 810 and C$ 737 respectively.

How far in advance should I book a flight from Newark Airport to Seattle?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Newark Airport to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Newark Airport to Seattle, you should book around 2 weeks before departure, which saves you about 29% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Expert advice

Expert advice for your flight from Newark to Seattle

 
Snippets provided in this section are AI-generated based on a summarisation of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
United Airlines

United's Economy Plus offers up to 15 cm more legroom than standard economy seats.


United's Priority Boarding puts you in Zone 2, avoiding overhead bin space issues.

Alaska Airlines

Alaska's Premium Class offers priority boarding, extra legroom, and complimentary drinks on flights over 560 km.


Alaska Airlines' 20-minute bag guarantee offers a discount code or bonus miles if delayed.

Airports
EWR

For a smooth departure from EWR, arrive early to navigate long security lines and check current wait times on the airport website.

Read more about EWRby Stefanie Waldek
SEA

Use the Link light rail for an affordable 40-minute trip from SEA to downtown Seattle, avoiding costly ride-hailing surcharges.

Read more about SEAby Harriet Baskas
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines and EWR

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Harriet Baskas

Harriet Baskas

Expert on Alaska Airlines and SEA

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more

Good to know

Low seasonJanuary
Cheapest flightC$ 144
Best time to beat the crowds (5% less expensive on average)
Most popular time to fly (10% more expensive on average)
Flight from Newark Liberty Airport to Seattle

When to book flights from Newark to Seattle

Are your dates flexible? Find out the best times to travel from Newark to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Flights from Newark to Seattle: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew the route from Newark to Seattle 
Verified travelerFlew with Alaska AirlinesEWR-SEASep 2024
Buy something in the airport to eat before boarding as its a long flight and the snacks are not enough unless you plan to sleep the whole ride.
KatieFlew with Alaska AirlinesEWR-SEAJun 2024
Alaska Airlines offered free checked bag and personal bag with ticket price which I found to be very reasonable. Of the other airlines I found Alaska Airlines to be most comfortable, have friendly and efficient staff and reasonable pricing. Newark airport is rather easy to navigate given its size. We found Seattle airport to be a bit difficult to navigate, especially when returning a rental. Customers in this instance should allow extra time for the car return, bus to the terminal and navigating through the airport which included several monorails to get to our boarding terminal and through security to the gate. Signage for security was confusing we needed to ask for direction and restaurants were limited and short staffed once through security. As long as you allow for extra time, we found it to be relatively painless.

FAQs for booking Newark Liberty Airport to Seattle flights

  • What is the cheapest flight from Newark Airport to Seattle?

    In the last 3 days, the lowest price for a flight from Newark Airport to Seattle was C$ 144 for a one-way ticket and C$ 283 for a round-trip.

  • Which airlines offer Wi-Fi service onboard planes from Newark Liberty Airport to Seattle?

    All the following airlines offer inflight Wi-Fi service on the Newark Liberty Airport to Seattle flight route: Alaska Airlines, JetBlue, Hawaiian Airlines, Asiana Airlines, American Airlines, and Japan Airlines.

  • Which aircraft models fly most regularly from Newark Liberty Airport to Seattle?

    The Boeing 737 MAX 9 is the aircraft model that flies most regularly on the Newark Liberty Airport to Seattle flight route.

  • Which airline alliances offer flights from Newark Liberty Airport to Seattle?

    oneworld is the only airline alliance operating flights between Newark Liberty Airport and Seattle.

  • On which days can I fly direct from Newark Liberty Airport to Seattle?

    There are direct flights from Newark Liberty Airport to Seattle on a daily basis.

  • How does KAYAK find such low prices on flights from Newark Liberty Airport to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Newark Liberty Airport to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Newark Liberty Airport to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Newark Liberty Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Newark Liberty Airport to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Newark Liberty Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Newark Liberty Airport to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Newark Liberty Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Newark Airport to Seattle

  • Looking for a cheap flight? 25% of our users found flights on this route for C$ 239 or less one-way.

Prefer to fly direct from Newark Liberty Airport to Seattle?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Newark to Seattle/Tacoma Intl.
Find which airlines fly direct from Newark Airport to Seattle/Tacoma Intl Airport, which days they fly and book direct flights.

Direct departures

Newark to Seattle/Tacoma Intl

Monday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

Tuesday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

Wednesday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

Thursday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

Friday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

Saturday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

Sunday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

See more nonstop flights

Direct returns

Seattle/Tacoma Intl to Newark

Monday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

Tuesday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

Wednesday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

Thursday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

Friday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

Saturday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

Sunday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

See more nonstop flights

Reviews of the top airline flying from Newark to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Newark to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Newark to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 11203 reviews
7.8Comfort
8.5Crew
7.0Entertainment
7.1Food
8.1Boarding
Airline reviews

In both halves of the trip (going and returning) there were problems. Not exactly Alaska's fault, but still really difficult. Outgoing flight was canceled and rebooked twice due to a total ground stop of all Alaska's flights. This required me to change airports with minimal notice and I almost missed my flight transferring to the other airport (which was roughly an hour and a half away). On the return, the first leg was delayed by an hour, and the second leg was delayed by nearly 3 hours. This was a rough set of flights and the communication about all of these changes was minimal. Crew did their best however, so no fault there. Other thing to remember is there is no food on Alaska flights unless you pre-order. Take that into account when you choose airlines.

6.0 GoodAnonymous, Oct 2025OAK - SEA
Read more Alaska Airlines reviews

In both halves of the trip (going and returning) there were problems. Not exactly Alaska's fault, but still really difficult. Outgoing flight was canceled and rebooked twice due to a total ground stop of all Alaska's flights. This required me to change airports with minimal notice and I almost missed my flight transferring to the other airport (which was roughly an hour and a half away). On the return, the first leg was delayed by an hour, and the second leg was delayed by nearly 3 hours. This was a rough set of flights and the communication about all of these changes was minimal. Crew did their best however, so no fault there. Other thing to remember is there is no food on Alaska flights unless you pre-order. Take that into account when you choose airlines.

My flight was canceled because of an IT outage, and they did not answer the phone for 8 hrs. There was no next flight out, I have missed my wedding because of this.

Liked the crew. Multiple delays. Altered my complete day and plans

Apart from the man snoring very loudly across the aisle from us for about 3.5 of the 5 hour flight it was a great flight. I couldn't get the internet to work and stay working. Texting was intermittent for me.

The plane boarded late and arrived late which wasn't really ideal.

The pretzels have no taste. How about a choice of snacks? The flight itself was fine.

This was my first time using Alaska. The best thing about Alaska is the people. Everyone that I had any contact with couldn’t have been better. So far on this trip no complaints. I will use Alaska again

Full, attentive service from the fist class cabin flight attendant was superb. Really exceeded expectations.

The stewards were too loud and chatty with each other

Definitely one of my favorite airlines! I always have a great experience with Alaska!

Everything you need to know for your flight from Newark to Seattle

Information on your arrival and departure airports

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