SEA - EWR

C$ 215 Find Cheap Flights from Seattle to Newark Liberty Airport – Compare and Save

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 23/9. 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$ 432
Typical prices: C$ 785-C$ 401
Delta
Wed 4/11Sat 7/11
SEA - EWR • 1 stop
Cheapest direct flights
C$ 439
Typical prices: C$ 560-C$ 353
Alaska Airlines
Thu 24/9Fri 25/9
SEA - EWR • Direct
Advice from real travellers
AI-powered summary based on content written by travel experts. AI can make mistakes.
United Economy Plus adds up to 15 cm more legroom than standard economy.
Alaska Premium Class adds boarding, legroom, and drinks on this long flight.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from C$ 432 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
You can fly direct with Alaska Airlines and United Airlines. Average duration is 5h 23m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Avoid delays
Most punctual • 84% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 3 weeks in advance save around 29% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 22% price drop
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
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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

Wed, 4 Nov - Sat, 7 Nov
Delta Logo
11:05 p.m. - 9:02 a.m.
SEA
-
EWR
6h 57m
1 stop
Delta Logo
9:40 a.m. - 2:23 p.m.
EWR
-
SEA
7h 43m
1 stop
C$ 432Delta
Thu, 24 Sep - Fri, 25 Sep
Alaska Airlines Logo
10:01 p.m. - 6:30 a.m.
SEA
-
EWR
5h 29mdirect
Alaska Airlines Logo
9:00 a.m. - 12:07 p.m.
EWR
-
SEA
6h 07mdirect
C$ 439Alaska Airlines
Thu, 27 Aug - Fri, 15 Jan
United Airlines Logo
11:00 p.m. - 9:08 a.m.
SEA
-
EWR
7h 08m
1 stop
United Airlines Logo
8:00 a.m. - 10:59 a.m.
EWR
-
SEA
5h 59mdirect
C$ 440United Airlines
Fri, 25 Sep - Sun, 27 Sep
United Airlines Logo
10:58 p.m. - 7:10 a.m.
SEA
-
EWR
5h 12mdirect
United Airlines Logo
7:50 a.m. - 10:54 a.m.
EWR
-
SEA
6h 04mdirect
C$ 441United Airlines
Tue, 1 Sep - Sat, 5 Sep
Delta Logo
6:31 p.m. - 6:00 a.m.
SEA
-
EWR
8h 29m
1 stop
Delta Logo
4:53 p.m. - 10:05 p.m.
EWR
-
SEA
8h 12m
1 stop
C$ 443Delta
Wed, 16 Sep - Thu, 24 Sep
Alaska Airlines Logo
12:30 p.m. - 11:29 p.m.
SEA
-
EWR
7h 59m
1 stop
Alaska Airlines Logo
9:00 a.m. - 12:07 p.m.
EWR
-
SEA
6h 07mdirect
C$ 444Alaska Airlines
Fri, 16 Oct - Mon, 19 Oct
Alaska Airlines Logo
10:37 p.m. - 6:59 a.m.
SEA
-
EWR
5h 22mdirect
Alaska Airlines Logo
7:00 a.m. - 10:12 a.m.
EWR
-
SEA
6h 12mdirect
C$ 446Alaska Airlines
Tue, 4 Aug - Mon, 10 Aug
United Airlines Logo
11:00 p.m. - 7:18 a.m.
SEA
-
EWR
5h 18mdirect
United Airlines Logo
5:12 p.m. - 11:10 p.m.
EWR
-
SEA
8h 58m
1 stop
C$ 447United Airlines
Thu, 8 Oct - Fri, 16 Oct
Alaska Airlines Logo
12:13 p.m. - 11:25 p.m.
SEA
-
EWR
8h 12m
1 stop
Alaska Airlines Logo
7:00 a.m. - 10:12 a.m.
EWR
-
SEA
6h 12mdirect
C$ 448Alaska Airlines
Tue, 25 Aug - Fri, 28 Aug
Delta Logo
6:31 p.m. - 6:00 a.m.
SEA
-
EWR
8h 29m
1 stop
Delta Logo
4:29 p.m. - 11:57 p.m.
EWR
-
SEA
10h 28m
1 stop
C$ 450Delta
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.

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

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

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, Tuesday 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$ 408 (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$ 725 and C$ 637 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.

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 C$ 540 on average.

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 29% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 20 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.
Our travel experts
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.

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.

Good to know

Low seasonFebruary
Cheapest flightC$ 215
Best time to beat the crowds (16% less expensive on average)
Most popular time to fly (18% 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 5 days, the lowest price for a flight from Seattle to Newark Airport was C$ 215 for a one-way ticket and C$ 432 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, Delta, American Airlines, Hawaiian Airlines, KLM, Scandinavian Airlines, and Virgin Atlantic.

  • 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?

    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.

  • 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.

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 airline 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.
7.9
Alaska AirlinesOverall score based on 12485 reviews
7.0Entertainment
7.8Comfort
7.0Food
8.1Boarding
8.5Crew
Airline reviews

A five hour nonstop flight traveling over a few time zones and over the dinner hour and you get a small bag of pretzels. And no screens to watch movies. I

4.0 OkayDean, Jun 2026
SEA - DCA
Read more Alaska Airlines reviews

A five hour nonstop flight traveling over a few time zones and over the dinner hour and you get a small bag of pretzels. And no screens to watch movies. I

The flight kept getting delayed due to a maintenance issue. That happens, but there is no excuse for changing the gate FIVE TIMES, including one time nearly all the way across SeaTac. After we were delayed for 3+ hours, they did send us (via email) a $12 meal voucher...except you can't find a $12 meal anywhere in that airport, unless you consider a bag of M&M's and a bottle of water a meal. The plane had one problem after another but finally took off 4.5 hours late. This caused us to miss our hotel shuttle at ORD (they didn't run past midnight and it was 3 am) so we had to wait 25 minutes and pay for an Uber. I did get a $50 flight voucher from Alaska...big deal. Barely covers my Uber ride that I shouldn't have needed.

I upgraded to a better seat and it was much more comfortable. Nobody serves food anymore and actually on a 2+ hr flight not necessary. I didn’t even get water.

Check in & bag drop was straightforward. Alaskair changed the gate approx 40 min before departure, and I only became aware due to Google wallet update to my boarding pass. Had to move from gate N1 to C9 which required use of the Train, luckily I had time available.

Super impressed by staff courtesy, and assistance, Flight was one of the best I've had despite turbulence... Will definitely be flying Alaskan air as my preferred choice

My boarding passes were pulled from my Apple wallet and my 3 family members who were all sitting together in the same row all got put middle seats and were one of the last to board and barely were able to get our bags in the luggage bins.

Was disappointed not to have known Alaska Air offers no music, no flight aware, no films.

I was surprised by everything. The cleanliness, the punctuality, the friendliness of the crew… and the Wi-Fi! Please keep up the good work.

The flight attendant and first class were very friendly, efficient, and wanted to make sure that service was great. Highly recommend this airline.

Thank you to everyone, the crew and pilots.. they were so amazing!!

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

Information on your arrival and departure airports