SEA - EWR

C$ 153 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 16/3. 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 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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Everything you should know

Cheapest round-trip
C$ 288
Overall average: C$ 469
United Airlines
Fri 20/2Mon 23/2
SEA - EWR • Direct
Cheapest one-way flights
C$ 153
Typical prices: C$ 234-C$ 509
United Airlines
Mon 16/3
SEA - EWR • Direct
Our travellers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
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$ 305 (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 31% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 24% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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!
Flight Deals
Booking Insights
Expert advice
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

Fri, 20 Feb - Mon, 23 Feb
United Airlines Logo
12:25 p.m. - 8:42 p.m.
SEA
-
EWR
5h 17mdirect
United Airlines Logo
8:28 p.m. - 11:51 p.m.
EWR
-
SEA
6h 23mdirect
C$ 288United Airlines
Wed, 18 Feb - Sat, 28 Feb
United Airlines Logo
12:43 p.m. - 9:00 p.m.
SEA
-
EWR
5h 17mdirect
United Airlines Logo
8:28 p.m. - 11:51 p.m.
EWR
-
SEA
6h 23mdirect
C$ 295United Airlines
Fri, 20 Feb - Thu, 26 Feb
Alaska Airlines Logo
10:09 a.m. - 6:28 p.m.
SEA
-
EWR
5h 19mdirect
Alaska Airlines Logo
5:30 p.m. - 8:55 p.m.
EWR
-
SEA
6h 25mdirect
C$ 296Alaska Airlines
Wed, 25 Mar - Wed, 1 Apr
Alaska Airlines Logo
8:13 a.m. - 4:38 p.m.
SEA
-
EWR
5h 25mdirect
Alaska Airlines Logo
4:55 p.m. - 8:08 p.m.
EWR
-
SEA
6h 13mdirect
C$ 302Alaska Airlines
Tue, 24 Feb - Mon, 2 Mar
United Airlines Logo
11:35 p.m. - 7:44 a.m.
SEA
-
EWR
5h 09mdirect
United Airlines Logo
8:28 p.m. - 11:51 p.m.
EWR
-
SEA
6h 23mdirect
C$ 303United Airlines
Wed, 8 Apr - Mon, 13 Apr
Alaska Airlines Logo
6:10 a.m. - 2:27 p.m.
SEA
-
EWR
5h 17mdirect
Alaska Airlines Logo
4:55 p.m. - 8:08 p.m.
EWR
-
SEA
6h 13mdirect
C$ 305Alaska Airlines
Wed, 18 Feb - Sat, 28 Feb
United Airlines Logo
11:35 p.m. - 7:44 a.m.
SEA
-
EWR
5h 09mdirect
United Airlines Logo
3:03 p.m. - 8:56 p.m.
EWR
-
SEA
8h 53m
1 stop
C$ 309United Airlines
Fri, 6 Feb - Sun, 8 Feb
United Airlines Logo
7:00 a.m. - 6:51 p.m.
SEA
-
EWR
8h 51m
1 stop
United Airlines Logo
7:50 p.m. - 11:15 p.m.
EWR
-
SEA
6h 25mdirect
C$ 310United Airlines
Wed, 4 Feb - Tue, 10 Feb
United Airlines Logo
10:58 a.m. - 10:58 p.m.
SEA
-
EWR
9h 00m
1 stop
United Airlines Logo
7:45 a.m. - 11:07 a.m.
EWR
-
SEA
6h 22mdirect
C$ 316United Airlines
Tue, 24 Feb - Sun, 1 Mar
United Airlines Logo
11:59 p.m. - 10:17 a.m.
SEA
-
EWR
7h 18m
1 stop
United Airlines Logo
8:28 p.m. - 11:51 p.m.
EWR
-
SEA
6h 23mdirect
C$ 317United Airlines
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 Sunday, as we generally find the cheapest rates on that day for this route. On the other hand, Saturday is the most expensive day to fly from Seattle to Newark Liberty Airport. For your return ticket, we recommend flying on a Tuesday 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 October, where tickets cost C$ 409 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is C$ 707 and C$ 650 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$ 331, 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 2 weeks before departure, which saves you about 31% 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

 
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.
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 gate-checking your carry-on bag.

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.

Airports
SEA

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

EWR

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

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$ 153
Best time to beat the crowds (22% less expensive on average)
Most popular time to fly (15% 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$ 153 for a one-way ticket and C$ 288 for a round-trip.

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

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

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

    The Boeing 737-900 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?

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

  • 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$ 554 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$ 608 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$ 304 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 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 11744 reviews
8.1Boarding
7.1Food
7.8Comfort
8.5Crew
7.0Entertainment
Airline reviews

How can I review what was denied to me. Instead of offering to let me pay for the ticket I got booted of my flight with no way home and no choice but to purchase another ticket for 12 hours later. Filing a complaint with the DOT

2.0 MediocreAnonymous, Jan 2026
SEA - ANC
Read more Alaska Airlines reviews

How can I review what was denied to me. Instead of offering to let me pay for the ticket I got booted of my flight with no way home and no choice but to purchase another ticket for 12 hours later. Filing a complaint with the DOT

From Las Vegas to Boise all went well. However, our flight was delayed in Boise and I missed my connecting flight from Seattle to Pasco. Moreover, the last flight to Pasco was full and I was booked on the 11:30 flight Sunday and given a hotel accommodation. However, I was scheduled to deliver the Sunday morning service at my church and needed to arrive no later than 10:00. Therefore, I booked a Delta flight scheduled to arrive in Pasco at 23:09. My piece of luggage checked in Las Vegas arrived in Pasco earlier today. I waited at the airport for over an hour last night to speak with an Alaska agent to no avail. I went back after church this morning in search of my piece of luggage and it could not be located. After waiting for 40 minutes to speak to the agent authorized to take my claim, he announced that he was closing the counter to assist on the flight line but not before providing me with a telephone number that would help me with filing my claim. Before I was able to make the call (due to other factors) I received a call from Alaska agent informing me that my luggage had just arrived and I am now waiting for it to be delivered. I deliberately took the more complicated route home to ensure that I would be home in plenty of time to prepare for myself for the Sunday service and accommodate my relatives’ needs. I believe the airport is undermanned given the number of flights coming in and going out. It was fiasco last night with three flights waiting for luggage and another flight landing within minutes. Today’s problems stemmed from a lack of cross training and a serious amount of cargo/baggage going out and too few people scheduled to cover.

The cabin crew was absolutely wonderful, the service was great and it was just a good flight overall.

I like them since I live in Alaska and I don't have much choice

The flight attendants were nice, but the cabin and seats were uncomfortable.

Food was terrible, noisy plane & would never pay to fly first class again. Seats in regular price are too small, no leg room & center aisle much too, too small. Seats in 1st class larger but not comfortable.

Overall, once we took off, our flight was good. Flight departure was significantly delayed due to mechanical issues. Upon arrival, it took wayyy too long to retrieve checked bags.

The ticket I purchased through Kayak did not show up in my Alaska Airlines app, and neither of the codes given to me worked for online check in. I've never had to show up to the airport at 6am wondering if I've been scammed. Cheap flight fare or whatever does not play well with airlines and I will be wary of using Kayak in the future.

Crew was rude and passive aggressive when i told them I didnt want to check my duffel bag. Then a crew member slammed my bag to the side when organizing the overhead compartment. The plane had worn leather seats with no infotainment. Plane landing was noticeably rough (this is the one year ive flown multiple times and out of american and delta this was the worst). The only redeeming quality is that we were noticeably earlier than we should have been.

The plane was delayed which was annoying. No seat back screens is a bummer. Staff if great

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

The crew at Hawaiian Airlines was fantastic. Kind and hard working. The pilots were great with giving us all the updates to make sure we were informed.

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.

I liked the Starlink WiFi but didn't like how they said they were the only airline to offer a free meal and it turns out to be just a standalone sandwich and then charge for snacks to go with it. Rather have the free snacks like Southwest, but have the option to purchase a decent meal for a 5+ hour flight.

Flight scheduled to take off at 5.55pm but it did not take off until 7pm due to some food delivery delay.

Unfortunately, I was put into the middle seat in the first row of premium seating. Sounds nice right? No! that is the worst seat in the plane. I wish I was in economy rather than be in that seat! There is no seat back pocket, no tray table, no charger. Nothing! so unless you're row mates are willing to let you share their basic amenities any flyer should have, you are stuck. It was the worst experience ever! And the flight attendant forgot to take my drink order. I felt like the forgotten flyer.

Delayed and cancelled flights were hard and very stressful, both ways!

The crew was quite good, they came by often with drinks or to collect trash. But what wasn't nice was the flight was over weigh and several people had to be rebooked. I was questioned whether I should have a seat when I was getting to it. The in-flight entertainment kept buffering and interrupting. And the route took the airplane through high winds which caused us a longer flight

Wasn’t on the flight due to Alaska cancellation…also after all the rerouting, I was going to be on a later flight that left SFO at 7:47pm, which meant an almost 6 hour layover. That same Hawaiian flight was delayed for another 2hours.

I had to cancel the flight because with a 3 hour delay for 'unexpected maintenance' in getting to LAX, I couldn't connect to an overseas flight that I had booked on Scandinavian Air.

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

Information on your arrival and departure airports