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Cheap flights from Newark Airport to Seattle from £148

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 28/7. Fares are subject to change and may not be available on all flights or dates of travel.
EWR — SEA
7 Aug — 14 Aug1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Newark to Seattle/Tacoma Intl are usually found in October or January, booked 77 days in advance, depart on a Monday or Tuesday and return on a Monday

Cheap flight deals from Newark to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Newark to Seattle
Explore the most affordable flight options available from Newark to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 July 2026.

Wed 18/1116:00
EWR
-
SEA
Nonstop6h 17m
Alaska Airlines
Mon 23/1121:40
SEA
-
EWR
Nonstop5h 24m
Alaska Airlines
Deal found 3/7£265
Tue 25/820:33
EWR
-
SEA
Nonstop6h 11m
United Airlines
Fri 28/818:10
SEA
-
EWR
1 stop8h 33m
United Airlines
Deal found 4/7£265
Tue 25/820:33
EWR
-
SEA
Nonstop6h 11m
United Airlines
Mon 31/823:00
SEA
-
EWR
1 stop7h 07m
United Airlines
Deal found 6/7£266
Thu 3/909:00
EWR
-
SEA
Nonstop6h 02m
Alaska Airlines
Wed 9/912:30
SEA
-
EWR
1 stop7h 59m
Alaska Airlines
Deal found 6/7£267
Mon 31/807:05
EWR
-
SEA
1 stop9h 35m
Delta
Wed 9/923:59
SEA
-
EWR
1 stop7h 30m
Delta
Deal found 6/7£268
Tue 1/920:33
EWR
-
SEA
Nonstop6h 11m
United Airlines
Tue 8/923:59
SEA
-
EWR
1 stop8h 54m
United Airlines
Deal found 4/7£268
Tue 13/1018:41
EWR
-
SEA
1 stop8h 18m
Delta
Wed 21/1023:05
SEA
-
EWR
1 stop6h 40m
Delta
Deal found 8/7£271
Tue 1/909:00
EWR
-
SEA
Nonstop6h 02m
Alaska Airlines
Tue 15/922:01
SEA
-
EWR
Nonstop5h 29m
Alaska Airlines
Deal found 6/7£271
Tue 21/720:30
EWR
-
SEA
Nonstop6h 14m
United Airlines
Tue 28/723:00
SEA
-
EWR
Nonstop5h 18m
United Airlines
Deal found 4/7£273
Fri 11/917:50
EWR
-
SEA
Nonstop6h 02m
Alaska Airlines
Fri 11/921:59
SEA
-
EWR
1 stop15h 03m
Alaska Airlines
Deal found 6/7£274

Find flight deals from Newark to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Newark (EWR) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 8 July 2026.

Round-trip from

£265

One-way from

£148

Popular in

July

Cheapest in

October

Average price

£386
Alaska Airlines
  • Alaska Airlines
  • 18/11-23/11
  • Nonstop
  • 11h 41m total
  • Newark to Seattle
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 28/7
  • Nonstop
  • 6h 13m total
  • Newark to Seattle
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£60 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Newark to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 8 July 2026.
Use the filters below to find and compare flights from Newark Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

NewarkSeattle

EWR - SEA

EWRSEA

Newark

Thu 10/12

11:45-16:35

1 stop7h 50m

Seattle/Tacoma Intl

Mon 14/12

06:00-15:52

1 stop6h 52m

£268

NewarkSeattle

EWR - SEA

EWRSEA

Newark

Sat 5/12

17:05-20:23

Nonstop6h 18m

Seattle/Tacoma Intl

Tue 8/12

10:30-18:56

Nonstop5h 26m

£297

NewarkSeattle

EWR - SEA

EWRSEA

Newark

Mon 24/8

07:59-11:03

Nonstop6h 04m

Seattle/Tacoma Intl

Tue 25/8

23:59-14:38

1 stop11h 39m

£313

NewarkSeattle

EWR - SEA

EWRSEA

Newark

Fri 4/9

15:40-18:41

Nonstop6h 01m

Seattle/Tacoma Intl

Sat 12/9

07:00-18:01

1 stop8h 01m

£313

NewarkSeattle

EWR - SEA

EWRSEA

Newark

Wed 19/8

20:33-23:44

Nonstop6h 11m

Seattle/Tacoma Intl

Tue 25/8

23:59-14:38

1 stop11h 39m

£327

NewarkSeattle

EWR - SEA

EWRSEA

Newark

Tue 18/8

20:33-23:44

Nonstop6h 11m

Seattle/Tacoma Intl

Tue 25/8

23:59-14:38

1 stop11h 39m

£327

NewarkSeattle

EWR - SEA

EWRSEA

Newark

Tue 25/8

20:33-23:44

Nonstop6h 11m

Seattle/Tacoma Intl

Thu 3/9

15:34-23:59

Nonstop5h 25m

£330

NewarkSeattle

EWR - SEA

EWRSEA

Newark

Wed 29/7

09:30-12:43

Nonstop6h 13m

Seattle/Tacoma Intl

Thu 6/8

15:38-23:59

Nonstop5h 21m

£353

NewarkSeattle

EWR - SEA

EWRSEA

Newark

Tue 18/8

07:25-10:35

Nonstop6h 10m

Seattle/Tacoma Intl

Tue 25/8

22:01-06:30

Nonstop5h 29m

£366
Fastest return journey

NewarkSeattle

EWR - SEA

EWRSEA

Newark

Wed 5/8

20:30-23:44

Nonstop6h 14m

Seattle/Tacoma Intl

Sat 8/8

23:00-07:18

Nonstop5h 18m

£390

Flights are sorted by cheapest return flights first.

Deals found on 3/7

Showing 1-10 of 21 resultsSorted by cheapest first
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Best time to book a flight from Newark to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Newark with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Newark Airport to Seattle

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

To ensure you get the cheapest price possible for a flight from Newark Airport to Seattle, you should look to book at least 54 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Newark Airport to Seattle?

Currently, October is the cheapest month in which you can book a flight from Newark Airport to Seattle (average of £215). Flying from Newark Airport to Seattle in July is currently the most expensive (average of £386). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from EWR to SEA?

Find hourly flight availability from Newark to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 8 July 2026.

When flying from Newark Airport to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost for a return flight from Newark Airport to Seattle?

Related info for your journey

Find useful and relevant information for your journey from Newark to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Seattle from Newark?

    Most people fly into Seattle/Tacoma Intl (SEA) if they book a flight to Seattle from Newark. On average, Seattle/Tacoma Intl has 6 inbound flights from Newark per day from 0 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

  • How long is the flight from Newark Airport to Seattle?

    There are many flights that can get you from Newark Airport to Seattle in 6h 04m. Fly via Alaska Airlines or United Airlines to get the fastest option. Airlines will cover a distance of 2393 mi. Generally, flights for this route are direct.

  • What are the most reliable airlines from Newark Airport to Seattle?

    The top 3 most reliable airlines when flying from Newark Airport to Seattle are Alaska Airlines (88%), American Airlines (87%) and Japan Airlines (87%).

  • Can I find deals for flights from Newark to Seattle that include hotel bookings?

    Yes. In addition to deals on Newark to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Newark to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Newark to Seattle.

  • Can I find deals for business class flights from Newark to Seattle?

    Yes. Cheapflights offers flight deals from Newark to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, October is the cheapest month in which you can book a flight from Newark Airport to Seattle (average of £215). Flying from Newark Airport to Seattle in July is currently the most expensive (average of £386). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Federal Way
SeaTac

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Alternative routes for Newark to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Seattle flights
John F Kennedy Intl to Portland flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Newark to Seattle?

Cheapflights helps you search for flights from Newark to Seattle via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Newark to Seattle?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Seattle from Newark.

Can Cheapflights find flights from Newark to Seattle with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Newark to Seattle, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Newark to Seattle become cheaper?

Yes! Start tracking prices for Newark to Seattle flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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