SEA - EWR

C$ 109 Find Cheap Flights from Seattle to Newark Liberty Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Newark departing on 13/10. 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

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

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

Cheap Flights from Seattle to Newark (SEA-EWR)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Newark 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 Seattle to Newark

seg, 17 nov - qua, 3 dez
Alaska Airlines Logo
9:34 p.m. - 5:59 a.m.SEA-EWR
5h 25mdirect
Alaska Airlines Logo
4:29 p.m. - 7:48 p.m.EWR-SEA
6h 19mdirect
C$ 275Alaska Airlines
Find Deal
ter, 28 out - sáb, 1 nov
Alaska Airlines Logo
10:05 a.m. - 6:29 p.m.SEA-EWR
5h 24mdirect
Alaska Airlines Logo
7:30 a.m. - 10:40 a.m.EWR-SEA
6h 10mdirect
C$ 282Alaska Airlines
Find Deal
qua, 5 nov - ter, 11 nov
United Airlines Logo
6:20 a.m. - 2:36 p.m.SEA-EWR
5h 16mdirect
United Airlines Logo
6:00 a.m. - 11:28 a.m.EWR-SEA
8h 28m1 stop
C$ 289United Airlines
Find Deal
sáb, 8 nov - dom, 9 nov
Alaska Airlines Logo
9:34 p.m. - 5:59 a.m.SEA-EWR
5h 25mdirect
Alaska Airlines Logo
7:30 a.m. - 10:40 a.m.EWR-SEA
6h 10mdirect
C$ 294Alaska Airlines
Find Deal
sáb, 18 out - ter, 28 out
United Airlines Logo
6:00 a.m. - 2:23 p.m.SEA-EWR
5h 23mdirect
United Airlines Logo
11:40 a.m. - 6:00 p.m.EWR-SEA
9h 20m1 stop
C$ 296United Airlines
Find Deal
sáb, 1 nov - sáb, 8 nov
Alaska Airlines Logo
10:05 a.m. - 6:29 p.m.SEA-EWR
5h 24mdirect
Alaska Airlines Logo
7:30 a.m. - 10:40 a.m.EWR-SEA
6h 10mdirect
C$ 303Alaska Airlines
Find Deal
qua, 29 out - qua, 29 out
Alaska Airlines Logo
8:48 a.m. - 5:06 p.m.SEA-EWR
5h 18mdirect
Alaska Airlines Logo
7:29 p.m. - 10:50 p.m.EWR-SEA
6h 21mdirect
C$ 308Alaska Airlines
Find Deal
qui, 6 nov - seg, 10 nov
United Airlines Logo
6:20 a.m. - 2:36 p.m.SEA-EWR
5h 16mdirect
United Airlines Logo
7:23 p.m. - 10:41 p.m.EWR-SEA
6h 18mdirect
C$ 321United Airlines
Find Deal
sáb, 6 dez - ter, 9 dez
Delta Logo
1:40 p.m. - 11:59 p.m.SEA-EWR
7h 19m1 stop
Delta Logo
6:39 a.m. - 12:57 p.m.EWR-SEA
9h 18m1 stop
C$ 345Delta
Find Deal
sex, 31 out - qua, 5 nov
Delta Logo
11:40 a.m. - 12:59 a.m.SEA-EWR
10h 19m1 stop
Delta Logo
6:55 a.m. - 2:45 p.m.EWR-SEA
10h 50m1 stop
C$ 372Delta
Find Deal

Everything you should know

Our travellers' advice
AI-generated summary based on content written by travel experts
United's Economy Plus offers extra legroom on this route.
Use SEA Spot Saver for faster security at Seattle.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Alaska Airlines
Cheapest • from C$ 275 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travellers who book at least 3 weeks in advance save around 33% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 25% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
C$ 275
Overall average: C$ 689
Alaska Airlines
seg 17/11qua 3/12
SEA - EWR • Direct
Cheapest direct flights
C$ 275
Typical prices: C$ 579-995
Alaska Airlines
seg 17/11sex 12/12
SEA - EWR • Direct
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Newark!
Booking Insights

KAYAK's insights & trends for Seattle to Newark flights

Get data-powered insights and trends into flights from Seattle to Newark 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 Seattle to Newark Liberty Airport?

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

If your flying dates are flexible, you should consider flying to Newark Liberty Airport on a Friday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday is the most expensive day to fly from Seattle to Newark Liberty Airport. For your return ticket, we recommend flying on a Friday and avoiding Mondays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Newark Airport, 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 Seattle to Newark Airport is September, where tickets cost C$ 442 (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$ 834 and C$ 727 respectively.

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

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.

No, with an average price for the route of C$ 555, prices are generally cheapest when you fly direct.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Newark Airport, 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 Seattle to Newark Airport, you should book around 3 weeks before departure, which saves you about 33% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Expert advice

Expert advice for your flight from Seattle to Newark

 
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
Alaska Airlines

Alaska Airlines' 20-minute baggage guarantee offers a discount or 2,500 bonus miles if delayed.


Alaska's Premium Class offers priority boarding, extra legroom, and complimentary drinks on flights over 350 miles.

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 gate-checking your carry-on bag.

Airports
SEA

Use the SEA Spot Saver for expedited security screening. Book online or via the flySEA app for free access to dedicated lanes.

Read more about SEAby Harriet Baskas
EWR

For a quick trip to NYC, take the AirTrain to Newark Liberty Station, then NJ Transit to New York Penn Station.

Read more about EWRby Stefanie Waldek
Our travel experts
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
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

Good to know

Low seasonFebruary
Cheapest flightC$ 146
Best time to beat the crowds (16% less expensive on average)
Most popular time to fly (41% more expensive on average)
Flight from Seattle to Newark Liberty Airport

When to book flights from Seattle to Newark

Are your dates flexible? Find out the best times to travel from Seattle to Newark 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.

FAQs for booking Seattle to Newark Liberty Airport flights

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

    In the last 3 days, the lowest price for a flight from Seattle to Newark Airport was C$ 105 for a one-way ticket and C$ 197 for a round-trip.

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

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

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

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

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Seattle to Newark are Alaska Airlines and Hawaiian Airlines. With an average price for the route of C$ 469 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Hawaiian Airlines is also a great choice for the route, with an average price of C$ 609 and an overall rating of 7.8.

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

    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 Seattle to Newark Liberty Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Newark Liberty Airport from Seattle 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 Seattle to Newark Liberty Airport?

    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 Newark Liberty Airport with an airline and back to Seattle with another airline.

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

    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 Newark Liberty Airport from Seattle 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 Seattle to Newark Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for C$ 341 or less one-way and C$ 508 or less round-trip.

Prefer to fly direct from Seattle to Newark Liberty Airport?

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

Direct departures

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

Direct returns

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

Reviews of the top 3 airlines flying from Seattle to Newark

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Newark. 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 Seattle to Newark? 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 11036 reviews
8.5Crew
8.1Boarding
7.8Comfort
7.0Entertainment
7.1Food
Airline reviews

Terrible. We were bumped off our flight to another and weren't sent notice until we were on our prior flight. We got home four hours later and the airline couldn't have cared less.

2.0 MediocreAnonymous, Oct 2025SEA - GEG
Read more Alaska Airlines reviews

Terrible. We were bumped off our flight to another and weren't sent notice until we were on our prior flight. We got home four hours later and the airline couldn't have cared less.

Continuously changing delayed departure time. Too much waiting for a short flight. Driving would have been faster.

5 hours delay, while seated moved passengers around on the plane. We were out on the runway, had to return to the gate. Changed tires.

The flight was great, unfortunately the Airport sucked at accommodating connection flight. My Mother had to sleep at the airport, making me feel helpless. Unable to determine if I should sleep or drive 3 hours each way to pick her up.

Despite the delays with boarding and flying out of Seattle, the flight crew was amazing!! This was my second experience flying with Alaska, and given the chance in the future, I would fly with them again.

Terrible. After boarding we sat on the runway for 1.5 hours "25th in line to take off" ... Alaska Air is on 7th terminal , far away from rest of airport

Better sinage at check-in counter on lines for baggage check in and boarding pass check in, specfically at JFK. It was a mess to figure and wasted a lot of people's time.

So amazing. I fly with a service dog and the staff on board both flights made sure I was comfortable went out of their way to make sure I had room. Can't say enough good words!

Flight was delayed about 40 minutes by a mechanical problem. This made a long day even longer. Otherwise good.

Alaska Airlines adds time to flight time to make up for late departures. Also Alaska Airlines destroyed my suitcase and I had to buy another suitcase for return flight. Very frustrating and not sure I would fly Alaska Airlines again.

Everything was great and smooth. Given the short flight there was no entertainment but the rating does not give this option. My first flight with Hawaiian was a success all around.

When I purchased my ticket, it said i was flying with Hawaii airlines. Which is now operated by Alaska. Naturally I went to check in with Hawaii airlines once at the airport. However, there was no one at the desk until 7 am and their kiosk couldn’t find my tickets. I went over to Alaska and they said they couldn’t help me and to wait for Hawaii. My flight left at 7:15 so I didn’t have time to wait. They even told me to ask United which was next to the Hawaii desk what time Hawaii opened. I called the Hawaii airlines number and the operator told me to ask Alaska for help since my flight was operated by Alaska. So I went back and almost got brushed off again and sent to Hawaii. The Alaska desk attendant told me to check in at their kiosk but it didn’t work. I ran over to an older lady who was helping check bags and asked for help printing my boarding passes. Thankful she was able to do it right away! This whole debacle took a little over an hour. I wish there was better communication and knowledge between the two airlines because it could have been easily handled if everyone between the two airlines was on the same page. Once I ran through the airport to get to my gate, we were greeted with a smile and they seemed glad we made our flight! We were the last to board and barely made it. After the headache our flight was great! No complaints there.

Biggest issue: awfully narrow seats, + not a lot of leg room. Other than that, everything was good. Cabin crew seemed like very nice people.

The Kayak confirmation number did not work for checking in the day before. I checked in at 8.30 using my ticket number. When I arrived at the airport, I was informed that the flight was overbooked, and since I had checked in late, I did not have a seat. The Next flight was not until ten PM. I called my wife, who had been taking care of our kids all weekend, and she was upset, calling me a liar and telling me to stay in SD. It turned my weekend getaway into a nightmare! I blame the Kayak website and will not book flights using your app in the future.

comfortable but the food is horrible. I have flown Hawaiian several times now and no matter what they say the food is its the same squashed bread with melted goop inside. Tastes fake and isnt what they represent, its quite nasty. What happend to real food? And there is NO entertainment!! so not sure why they are asking for a review on that.

Good and friendly staff. Nicely enjoyed the complimentary drink and snack.

I was very, very cold and a stranger loaned me her sweater next to me. I didn’t wanna buy a blanket just for a four hour trip when I did not need the pillow or the earphones. I don’t mind purchasing a blanket, but I only needed that not all of it accessories. Cold air pretty much blew the entire trip. Two people in front of me both bought the blanket packages. Maybe that’s the idea. The crew was exceptionally nice and passed through multiple times.. the restrooms were very clean and usually accessible.

One hour waiting time after boarding, but arrived in time. I am satisfied

The entire crew had everything handled and truly worked together. More than once, I saw them hustle down the aisle and back just to serve customers.

3 hour wait on customer service after flight was cancelled. Was bumped to a flight where I wouldnt have gotten to my destination for another 2 days. Had to fully refund flight and book a new one the following morning. Paid twice the amount for the flight than I had originally booked. Very disappointed I was not offered any sort of discount or points for all of the frustration, in fact the airline profited twice as much off of me by cancelling my flight and and changing my entire trip.

Flight is clean and ontime. Crew is friendly. Snack can be better and the internet connection is poor

All of the United employees I interacted with were professional and courteous. The aircraft was clean, the food on the flight was good. No complaints here.

There was no food available for this red eye... one little waffle cookie for a 6+ hour flight... thank God I was able to sleep some

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

Terrible. Delayed 7 hours, and cancelled the flight, leaving me stranded and out of pocket $500 for an alternative last minute flight

Not a great experience. We paid for the upgrade for premium economy seats and seated ourselves in very comfortable seats. Someone came along with the same seat on their boarding pass. The aircraft had been changed and as a result we were booted out and sent further back to small uncomfortable seats. After complaining we were moved to emergency row seats, which gave us more leg room but the seats don’t recline. For people in our 70’s we found having to sit upright from California to NJ very uncomfortable. Not sure why they chose to move senior citizens instead of the two people that were allowed to take the more comfortable seats. Not happy.

Cramped seat even in economy plus seat 10A. Over booked flight, no space for the bags

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

get E+, a must for 5 hours flight if you are tall

Multiple delays and not straight answer from the United team

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