EWR - SEA

$140 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 5/4. 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.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Newark to Seattle.
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Everything you should know

Cheapest round-trip
$260
Typical prices: $534-$306
Alaska Airlines
Wed 5/6Tue 5/12
EWR - SEA • Non-stop
Cheapest one-way
$140
Typical prices: $202-$369
Alaska Airlines
Mon 5/4
EWR - SEA • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts and KAYAK users. AI can make mistakes.
Alaska's Premium Class offers extra legroom and drinks.
Bring food onboard; Alaska's snacks may not be enough.
Expert advice
Expert advice
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Expert advice
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Top airlines
Cheapest • from $260 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Nonstop flights
You can fly direct with Alaska Airlines and United Airlines. Average duration is 6h 10m
Direct flights
Direct flights
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Direct flights
Direct flights
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Avoid delays
Most punctual • 83% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $270 (round-trip)
Shortest trip • 7h 30m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 36% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 27% price drop
Most popular
Good to know
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We hope you love your trip to Seattle!
Flight Deals
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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

Wed, May 6 - Tue, May 12
Alaska Airlines Logo
9:00 am - 12:11 pm
EWR
-
SEA
6h 11mnonstop
Alaska Airlines Logo
2:52 pm - 11:29 pm
SEA
-
EWR
5h 37mnonstop
$260Alaska Airlines
Fri, May 29 - Fri, Jun 5
Alaska Airlines Logo
9:30 am - 12:43 pm
EWR
-
SEA
6h 13mnonstop
Alaska Airlines Logo
3:30 pm - 11:59 pm
SEA
-
EWR
5h 29mnonstop
$261Alaska Airlines
Fri, May 29 - Fri, May 29
Alaska Airlines Logo
9:30 am - 12:43 pm
EWR
-
SEA
6h 13mnonstop
Alaska Airlines Logo
3:30 pm - 11:59 pm
SEA
-
EWR
5h 29mnonstop
$262Alaska Airlines
Sat, May 2 - Sat, May 9
Alaska Airlines Logo
3:30 pm - 6:40 pm
EWR
-
SEA
6h 10mnonstop
Alaska Airlines Logo
2:52 pm - 11:29 pm
SEA
-
EWR
5h 37mnonstop
$265Alaska Airlines
Thu, May 28 - Wed, Jun 3
Alaska Airlines Logo
9:30 am - 12:43 pm
EWR
-
SEA
6h 13mnonstop
Alaska Airlines Logo
10:30 pm - 6:52 am
SEA
-
EWR
5h 22mnonstop
$266Alaska Airlines
Wed, May 6 - Tue, May 12
United Airlines Logo
8:49 pm - 11:59 pm
EWR
-
SEA
6h 10mnonstop
United Airlines Logo
7:25 am - 3:49 pm
SEA
-
EWR
5h 24mnonstop
$267United Airlines
Sat, May 2 - Wed, May 13
Alaska Airlines Logo
7:29 am - 10:36 am
EWR
-
SEA
6h 07mnonstop
Alaska Airlines Logo
3:30 pm - 11:59 pm
SEA
-
EWR
5h 29mnonstop
$272Alaska Airlines
Mon, May 4 - Thu, May 7
United Airlines Logo
8:49 pm - 11:59 pm
EWR
-
SEA
6h 10mnonstop
United Airlines Logo
11:00 pm - 7:21 am
SEA
-
EWR
5h 21mnonstop
$273United Airlines
Sat, Apr 25 - Sat, May 2
Alaska Airlines Logo
5:56 pm - 9:10 pm
EWR
-
SEA
6h 14mnonstop
Alaska Airlines Logo
10:09 pm - 6:39 am
SEA
-
EWR
5h 30mnonstop
$274Alaska Airlines
Wed, May 6 - Tue, May 12
United Airlines Logo
8:49 pm - 11:59 pm
EWR
-
SEA
6h 10mnonstop
United Airlines Logo
1:21 pm - 12:56 am
SEA
-
EWR
8h 35m
1 stop
$277United Airlines
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.

How much is a round-trip flight from Newark Airport to Seattle?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Newark Airport to Seattle departing in May.

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.

If you are looking for a flight deal from Newark Liberty Airport to Seattle, look for departures on Wednesdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Seattle, Wednesday is the cheapest day to fly and Sunday is 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 $278 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $488 and $477 respectively.

Can I save money by flying with a layover from Newark Airport to Seattle?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $459 on average.

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 36% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Expert advice

Expert advice for your flight from Newark to Seattle

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on Alaska Airlines and SEA

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.

Stefanie Waldek

Stefanie Waldek

Expert on United Airlines and EWR

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.

Good to know

Low seasonJanuary
Cheapest flight$140
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly with an average 24% increase in price.
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 travelers who flew the route from Newark to Seattle 
Verified travelerFlew with Alaska Airlines
EWR
-
SEA
Sep 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 Airlines
EWR
-
SEA
Jun 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 $140 for a one-way ticket and $260 for a round-trip.

  • Do I need a passport to fly between Newark Liberty Airport and Seattle?

    A passport is not required to fly from Newark Liberty Airport to Seattle.

  • Which airports will I be using when flying from Newark Liberty Airport to Seattle?

    On your way to Seattle, you’ll fly out from Newark. You’ll be landing at Seattle/Tacoma Intl.

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

    Alaska Airlines, JetBlue, Hawaiian Airlines, Delta, and American Airlines offer inflight Wi-Fi service on the Newark Liberty Airport to Seattle flight route.

  • 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?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Newark Liberty Airport and Seattle, with SkyTeam being the most commonly used for this route.

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

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

  • Which is the best airline for flights from Newark to Seattle, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Newark to Seattle are Alaska Airlines and Delta. With an average price for the route of $399 and an overall rating of 7.9, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $322 and an overall rating of 7.9.

  • 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 travelers 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. Booking your flights between Newark Liberty Airport and SEA can sometimes prove cheaper using this method.

  • 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 $228 or less one-way and $395 or less round-trip.

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 direct 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 direct flights

Reviews of the top 5 airlines serving 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.
7.9
Alaska AirlinesOverall score based on 12244 reviews
8.5Crew
8.1Boarding
7.8Comfort
7.0Food
7.0Entertainment
Airline reviews

Thanks for all you do to keep us safe and on time!

8.0 ExcellentGlenn, Apr 2026
ORD - SEA
Read more Alaska Airlines reviews

Thanks for all you do to keep us safe and on time!

My very first, first class flight! Loved the comfortable seats, foot rest and beverages. Did not have food due to short flight. Crew was very friendly!

This was my first time flying first class. I was really disappointed with the food option and lack of entertainment. I wasn’t given an option of what to eat. The breakfast was less than desirable. It was a bowl of some type of granola cereal, dried fruit, almond butter and 3 biscuits that we pretty much tasteless. There was so much fiber in that meal I was afraid I would poop myself in the flight. There was absolutely ZERO entertainment available. No tv screen to watch a movie or listen to music. No charging port for my phone. I recently flew Delta Airlines Comfort class and I had a tv screen with numerous options of music to listen to and movies to watch. Also I had a charging port for my phone. I expected more quality from first class. Please understand I am not some prima donna that feels entitled. But the price I paid for first class wasn’t worth what I experienced.

I've been loyal to Alaska Airlines for nearly 25 years and before the merger I had much better benefits. However, since the merger with Hawaiian Air, you've bumped me from group A to B or C and I now get poor selection of seats in the back of the plane.

This flight was all good. It was packed, but it took off on time and there were no problems. It would have been nice if they'd checked our bags for free, as they sometimes do.

Exactly as anticipated. I've always preferred Alaska Airlines over all others.

Were on time, very efficient and pleasant. Families with children were treated well and boarded ahead which made it easier for the rest of the plane.

I truly can’t give a review regarding the food or entertainment it did not apply to my flight. But everything ran very smoothly.

Great. A to B no issues. Everyone did their jobs exceptionally. All great. God bless America.

The response was very helpful and quick. Overall, it was very professional.

WiFi didn’t work most of the time. The usb chargers would work only occasionally for 5 mins and wouldn’t charge after that. Had to keep trying repeatedly at each of the seats in the row.

The crew bent over backwards to thank us for flying and make us comfortable. The food service was quick and efficient. The Captain communicated and said goodbye and thank you as we departed. They really stood out!

Flight delayed. Air broken. Cabin was hot enough to pass out. Delta shuttle’s becoming worse and worse.

my mom urmila patel needed a wheelchair which was not available on the curbside. she needed to walk almost 50 meters inside (at the risk of falling) and then had to wait in line to get a wheelchair (this is not ok). Once obtained she had to seat in it for 30-45 minutes for someone to take her in thru the checkin process (which was fairly smooth and easy). the lady who helped her with her checkin process was very courteous and helpful

This was the worse experience. They delayed our flight twice and we still had to find another flight to get home sooner which was alos delayed. Also, the flight attendant named Ginny on DL9890 leaving at 4:13pm on 3/23/26 was extremely rude.

I love Delta the flight attendants were personable and the flight arrived 1/2 earlier thanks expected. All a plus. The gate agent was a bit flustered but even with that I still had a good experience. Her supervisor assisted me.

I am still at the Airport! Delayed Delayed and Delyaed

The first class flight attendant was awful to everyone. Very rude; no customer service. She should not be working in first class.

It was fine. 55 minute flight. No snacks or beverage service offered. Boarding went smoothly and my walker was waiting for me on the jet way.

My flight was cencaled due with the bad weather on Sunday the crew was poorly mistaken my luggage supposed depart with my flight instead I didn’t have my luggage for almost 3 days the website is poorly respond to my complain until I have someone to do it my connection smooth their not even respon or email me even the have my luggage

Omg the disaster at the security was on another level! “Go to this end, sorry closed now, go to that end”. Ridiculous! This took over an hour! As far as the airline was concerned although I booked nearly a year ago I couldn’t get my bag tag - stand in another 15 minute line or my seat on Hawaiian Airlines- 5 more minutes! Then my TSA status was denied. Like what the heck! Makes a person not want to travel with this amount of incompetence

The Honolulu Hub needs 2 to 3 times the amount of things to do as well as shuttles that transport to/from gates and terminals. Arriving from OCONUS locations; transferring to CONUS locations its a miserable experience. Fetching and re-checking bags, then returning to a gate across the airport take longer than any other large airport. If youre confused by what I mean, the process goes like this: Disembark plane Walk a mile to the main terminal Walk half a mile to baggage claim Wait 40 minutes for baggage Walk a mile to re-check-in baggage Wait 20 minutes for checking in those bags Fo back through the wrong TSA line because the signage is poor Almost miss the connecting flight because your gate is across the airport.

The checking was disaster, the crew wasn't behave well. It took us two hours to check in, after that thr line at the TSA was long, we barely make the flight. Bad airline

Fabulous if you have a portable wheelchair. They can store it in the galley and you can just walk out with it. Really nice and the flat seats are just incredible, very nice. iPads for movies, also pretty nice,

The crew were exceptionally nice and accommodating. My wife was tired after the flight from Haneda, Tokyo. They let her sleep and served her dinner later after she woke up, before we landed in PDX.

No charging outlets worked. Other than collecting trash attendants didn’t come around. No one could hear flight attendants announcements during the flight. Seat pads were horrible. Sitting on a board for 5 hours. What happened to Hawaiian airlines comfort, hospitality, and extras? Our pilots did an excellent job trying to minimize turbulence and incredible job in landing in windy conditions.

I like that if they asked you to checked in a bag at the gate they give you priority to board

Horrible food and crew. Crew were laughing and talking loud while people were trying to sleep

Yall need to integrate your system with Alaska more efficiently. They booted me off the first flight because of a discrepancy on your end.

Very good. Nice plane and we sat in economy plus - bigger seats, more room. They served a meal and snacks, and the meal was an apple stuffed pancake that was very good! The snack for us was a hummus sandwich - also very good. The flight attendants were helpful and nice. They have plenty of movies and shows to watch. My only negative -- they changed our flights around and did not adjust the layovers, so we ended up with a very long and unnecessary layover in Honolulu.

Flight left on time, arrived early, pleasant staff provided water, coffee, etc. access to bathrooms was reasonable and were well maintained. blankets were available, lots of entertainment options. LUGGAGE SERVICE WAS GREAT. I got my one checked bag quickly and was able to make a bus connection for a 2 hour bus ride saving me from waiting another 1.5 hours.

Smooth and easy boarding, comfortable for the entire 5 hour flight, and the seat back entertainment was great! I appreciated all the features, from location info and maps, movies, the ability to connect with Bluetooth headphones, and good selection of movies. Food was good, normal airline snacks (I didn’t purchase anything)

They promise free wi-fi prior to boarding and then once on board you are informed you have to purchase wifi even after being a mileagePlus member.

Both our flights were delayed. Almost didn’t get in the second flight. Staff was rude to the bone.

Everything went well except the turbulence what no one have a control of but pilot and crew handled very good!

Much better than Spirit. I was please by the easy fast check in and boarding

The attendant on board was amazing. She should be doing business/first international long haul.

Perfect flight. Smooth flight. Arrived 20 minutes early at destination. Excellent service.

Flight was delayed 8 times. We were sitting at the airport for 14 hours. We got 2 hours of sleep (if that) on what was not meant to be a red-eye.

Plane boarded early a quickly, was mostly full. We left close to on time. And landed early.

Wifi was spotty. Tray table was very dirty when I sat down.

Flight was extremely hot and they made us check our bags when the space was nowhere near full

Same plane as RDU to LGA — internet not working. Pilot issue of some sort at end of prior flight - I was on same plane for my connection. Late/delayed —

Plane was super cold. No entertainment unless you were with mileage program Getting off the plane was super slow

My flight from LGA was cancelled and my rebooked flight from JFK was delayed numerous times. I will now be getting home after 2am.

Flight was delayed half hour before boarding, but when I checked flight aware the plane that would Pick us up had a delay of more than an hour. AA should let us know in advance to avoid waiting several hours in the airport

There was no inflight service. Once we landed we were delayed to find a gate for an hour and a half which was 1/2 the total time in the air.

The gate agent had a really bad attitude and refused to help me get on the standby list. She just handed me a card and said I needed to call a number. I asked her to help with the AA app on my phone and she just shrugged and said she didnt know. After a few phone calls, I eventually just went to a different gate agent on the other side of the terminal and got the help I needed.

Beverage service was not good. Also just one service in 5 hr 30 min flight. No ask fir water ir anything beside one time beverage service.

One day, I do so hope for a gluten free snack! Seems like with the rest of the world FINALLY figuring out what gluten free is, American Airlines would too. Fingers crossed!!

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

Information on your arrival and departure airports