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Newark Liberty International Airport to Seattle-Tacoma International Airport flight

Explore the cheapest one-way and round-trip flights from Newark Liberty International Airport to Seattle-Tacoma International Airport over the next 90 days, with one-way fares from £109 and round-trip from £230. Based on Trip.com's latest 7-day flight data.

      • Cheapest nonstop
        EWR 7:03 AM
        6h 12m
        Nonstop
        SEA 10:15 AM
        New York - Seattle | Mon, Nov 16 | Alaska Airlines
        SEA 9:58 AM
        5h 31m
        Nonstop
        EWR 6:29 PM
        Seattle - New York | Fri, Nov 20 | Alaska Airlines
        £234 £313
        25% off
        25% off
        £313 £234
      • EWR 7:03 AM
        6h 12m
        Nonstop
        SEA 10:15 AM
        New York - Seattle | Fri, Oct 23 | Alaska Airlines
        SEA 10:40 PM
        5h 19m
        Nonstop
        EWR 6:59 AM
        Seattle - New York | Sun, Oct 25 | Alaska Airlines
        £240 £313
        23% off
        23% off
        £313 £240
      • EWR 7:00 AM
        6h 12m
        Nonstop
        SEA 10:12 AM
        New York - Seattle | Sat, Oct 24 | Alaska Airlines
        SEA 10:37 PM
        5h 22m
        Nonstop
        EWR 6:59 AM
        Seattle - New York | Sat, Oct 31 | Alaska Airlines
        £240 £313
        23% off
        23% off
        £313 £240
      • EWR 9:30 AM
        6h 5m
        Nonstop
        SEA 12:35 PM
        New York - Seattle | Fri, Nov 6 | Alaska Airlines
        SEA 10:40 PM
        5h 19m
        Nonstop
        EWR 6:59 AM
        Seattle - New York | Fri, Nov 13 | Alaska Airlines
        £241
        23% off
        £313 £241
      • EWR 11:52 AM
        7h 51m
        1 stop
        SEA 4:43 PM
        New York - Seattle | Mon, Oct 12 | Delta Air Lines
        SEA 11:05 PM
        6h 38m
        1 stop
        EWR 8:43 AM
        Seattle - New York | Sat, Oct 17 | Delta Air Lines
        £230
        27% off
        £313 £230
      • EWR 6:55 AM
        8h 55m
        1 stop
        SEA 12:50 PM
        New York - Seattle | Thu, Oct 1 | Alaska Airlines
        SEA 11:59 PM
        7h 58m
        1 stop
        EWR 10:57 AM
        Seattle - New York | Sun, Oct 4 | Delta Air Lines
        £235
        25% off
        £313 £235
      • EWR 7:20 AM
        6h 2m
        Nonstop
        SEA 10:22 AM
        New York - Seattle | Mon, Oct 12 | Alaska Airlines
        SEA 10:04 AM
        10h 25m
        1 stop
        EWR 11:29 PM
        Seattle - New York | Wed, Oct 14 | Alaska Airlines
        £236
        25% off
        £313 £236
      • EWR 6:55 AM
        8h 3m
        1 stop
        SEA 11:58 AM
        New York - Seattle | Fri, Oct 16 | Alaska Airlines
        SEA 11:22 AM
        9h 28m
        1 stop
        EWR 11:50 PM
        Seattle - New York | Fri, Oct 23 | Delta Air Lines
        £236
        25% off
        £313 £236
      • EWR 7:20 AM
        9h 26m
        1 stop
        SEA 1:46 PM
        New York - Seattle | Wed, Sep 30 | American Airlines
        SEA 6:40 AM
        7h 51m
        1 stop
        LGA 5:31 PM
        Seattle - New York | Tue, Oct 6 | American Airlines
        £238
        24% off
        £313 £238
      • EWR 6:50 AM
        9h
        1 stop
        SEA 12:50 PM
        New York - Seattle | Sat, Oct 10 | Alaska Airlines
        SEA 10:01 PM
        5h 29m
        Nonstop
        EWR 6:30 AM
        Seattle - New York | Mon, Oct 12 | Alaska Airlines
        £240
        23% off
        £313 £240
      • EWR 9:30 AM
        6h 5m
        Nonstop
        SEA 12:35 PM
        New York - Seattle | Wed, Nov 11 | Alaska Airlines
        SEA 8:40 AM
        7h 45m
        1 stop
        JFK 7:25 PM
        Seattle - New York | Mon, Nov 16 | Alaska Airlines
        £241
        23% off
        £313 £241
      • EWR 7:03 AM
        6h 12m
        Nonstop
        SEA 10:15 AM
        New York - Seattle | Thu, Nov 12 | Alaska Airlines
        SEA 10:20 AM
        9h 39m
        1 stop
        JFK 10:59 PM
        Seattle - New York | Tue, Nov 17 | Alaska Airlines
        £241
        23% off
        £313 £241
      • NYC 1:00 PM
        17h 25m
        1 stop
        SEA 2:00 PM
        New York - Seattle | Sun, Sep 27 | Normal Airline
        SEA 3:00 PM
        6h
        Nonstop
        NYC 4:00 PM
        Seattle - New York | Tue, Sep 29 | Normal Airline
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      • Cheapest nonstop
        EWR 6:25 PM
        6h 25m
        Nonstop
        SEA 9:50 PM
        New York - Seattle | Fri, Nov 13 | Alaska Airlines
        £109 £158
        31% off
        31% off
        £158 £109
      • EWR 9:30 AM
        6h 5m
        Nonstop
        SEA 12:35 PM
        New York - Seattle | Wed, Nov 11 | Alaska Airlines
        £111 £158
        30% off
        30% off
        £158 £111
      • EWR 7:17 AM
        6h 13m
        Nonstop
        SEA 10:30 AM
        New York - Seattle | Sun, Nov 15 | Alaska Airlines
        £111 £158
        30% off
        30% off
        £158 £111
      • EWR 7:29 PM
        6h 13m
        Nonstop
        SEA 10:42 PM
        New York - Seattle | Fri, Nov 20 | Alaska Airlines
        £114
        28% off
        £158 £114
      • EWR 7:29 PM
        6h 13m
        Nonstop
        SEA 10:42 PM
        New York - Seattle | Sat, Nov 21 | Alaska Airlines
        £118
        25% off
        £158 £118
      • EWR 9:30 AM
        6h 5m
        Nonstop
        SEA 12:35 PM
        New York - Seattle | Mon, Nov 2 | Alaska Airlines
        £118
        25% off
        £158 £118
      • EWR 7:03 AM
        6h 12m
        Nonstop
        SEA 10:15 AM
        New York - Seattle | Mon, Nov 9 | Alaska Airlines
        £119
        25% off
        £158 £119
      • EWR 8:00 AM
        11h 33m
        1 stop
        SEA 4:33 PM
        New York - Seattle | Thu, Nov 19 | Delta Air Lines
        £112
        28% off
        £158 £112
      • EWR 2:30 PM
        9h 16m
        1 stop
        SEA 8:46 PM
        New York - Seattle | Fri, Nov 20 | Delta Air Lines
        £113
        28% off
        £158 £113
      • EWR 8:30 AM
        11h 3m
        1 stop
        SEA 4:33 PM
        New York - Seattle | Fri, Nov 13 | Delta Air Lines
        £116
        27% off
        £158 £116
      • EWR 1:29 PM
        11h 34m
        1 stop
        SEA 10:03 PM
        New York - Seattle | Sat, Nov 21 | Delta Air Lines
        £117
        26% off
        £158 £117
      • EWR 6:30 AM
        9h 42m
        1 stop
        SEA 1:12 PM
        New York - Seattle | Fri, Nov 13 | American Airlines
        £121
        23% off
        £158 £121
      • NYC 1:00 PM
        17h 25m
        1 stop
        SEA 2:00 PM
        New York - Seattle | Sun, Sep 27 | Normal Airline
        Find more flights
        Find more flights

Flight fares from Newark Liberty International Airport to Seattle-Tacoma International Airport are based on average airline prices for the next 3 months, according to Trip.com’s latest data.

Trip.com Price Insights: Flights from Newark Liberty International Airport to Seattle-Tacoma International Airport

Which month has the lowest one-way flight price from Newark Liberty International Airport to Seattle-Tacoma International Airport?

The data is based on the average one-way flight prices on Trip.com for flights from Newark Liberty International Airport to Seattle-Tacoma International Airport across different months over the past 12 months.

Based on Trip.com data from the past 12 months, if you’re looking for low one-way flight fares from Newark Liberty International Airport to Seattle-Tacoma International Airport, the best time to book is in October, with an average price of £123. Try to avoid July, when prices are highest, averaging around £256.

£256
£190
£123
£57
    Cheapest
  • £134
    Sep
  • £123
    Oct
  • £166
    Nov
  • £247
    Dec
  • £176
    Jan
  • £178
    Feb
  • £154
    Mar
  • £174
    Apr
  • £183
    May
  • £215
    Jun
  • £256
    Jul
  • £217
    Aug

What is the cheapest day of the week to fly from Newark Liberty International Airport to Seattle-Tacoma International Airport?

The data is based on the average flight prices on Trip.com from Newark Liberty International Airport to Seattle-Tacoma International Airport across different days of the week over the past 12 months.

Based on Trip.com data from the past 12 months, the cheapest day to depart from Newark Liberty International Airport to Seattle-Tacoma International Airport is usually Wednesday, with average fares typically lower than other days. Try to avoid departing on Monday, as prices are usually the highest on that day.

£232
£202
£172
£142
    Cheapest
  • £232
    Mon
  • £173
    Tue
  • £172
    Wed
  • £180
    Thu
  • £178
    Fri
  • £198
    Sat
  • £229
    Sun

Which airline offers the cheapest flights from Newark Liberty International Airport to Seattle-Tacoma International Airport?

The cheapest airline flying from Newark Liberty International Airport to Seattle-Tacoma International Airport is Alaska Airlines (from £109) among 6 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Alaska Airlines
From £109
Delta Air Lines
From £112
American Airlines
From £121
United Airlines
From £152
Sun Country Airlines
From £176
Frontier Airlines
From £260

Find more flights and airlines

What is the flight schedule from Newark Liberty International Airport to Seattle-Tacoma International Airport?

Check the schedule for flights from New York to Seattle and find the flight that best matches your travel plans.

Flight info.
Departure
Arrival
Weekly Schedule

  1. AS299

    Newark Liberty International Airport

    5:41 PM

    EWR

    6h 19m

    9:00 PM

    SEA

    S M T W T F S
    Search

  2. AA7515

    Newark Liberty International Airport

    7:00 AM

    EWR

    6h 27m

    10:27 AM

    SEA

    S M T W T F S
    Search

  3. AS296

    Newark Liberty International Airport

    5:43 PM

    EWR

    6h 15m

    8:58 PM

    SEA

    S M T W T F S
    Search

  4. AS356

    Newark Liberty International Airport

    5:05 PM

    EWR

    6h 18m

    8:23 PM

    SEA

    S M T W T F S
    Search

  5. AS462

    Newark Liberty International Airport

    6:05 PM

    EWR

    6h 25m

    9:30 PM

    SEA

    - M T W - F S
    Search

  6. AS373

    Newark Liberty International Airport

    9:30 AM

    EWR

    6h 5m

    12:35 PM

    SEA

    S M T W T F S
    Search

  7. DL2312

    Newark Liberty International Airport

    5:30 PM

    EWR

    2h 35m

    Nonstop

    8:05 PM

    ATL

    S M T W T F S
    Search

  8. DL714

    Hartsfield–Jackson Atlanta International Airport

    6:10 PM

    ATL

    5h 36m

    Nonstop

    8:46 PM

    SEA

    S M T W T F S

  9. AA1796

    Newark Liberty International Airport

    12:28 PM

    EWR

    3h 39m

    Nonstop

    3:07 PM

    DFW

    S M T W T F S
    Search

  10. AA1483

    Dallas Fort Worth International Airport

    5:30 PM

    DFW

    4h 18m

    Nonstop

    7:48 PM

    SEA

    S M T W T F S

  11. UA1525

    Newark Liberty International Airport

    10:22 AM

    EWR

    2h 38m

    Nonstop

    12:00 PM

    ORD

    S M T W T F S
    Search

  12. UA1801

    O'Hare International Airport

    4:15 PM

    ORD

    4h 44m

    Nonstop

    6:59 PM

    SEA

    S M T W T F S

  13. DL2365

    Newark Liberty International Airport

    8:00 AM

    EWR

    2h 33m

    Nonstop

    10:33 AM

    ATL

    S M T W T F S
    Search

  14. DL481

    Hartsfield–Jackson Atlanta International Airport

    2:00 PM

    ATL

    5h 35m

    Nonstop

    4:35 PM

    SEA

    S M T W T F S
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About Newark Liberty International Airport and Seattle-Tacoma International Airport

Learn about Newark Liberty International Airport (EWR) and Seattle-Tacoma International Airport (SEA) — including location, terminals, transportation, and travel tips.

Flight distance 3,858.09 km
Cheapest one-way ticket price £109
Cheapest return ticket price £230

FAQs for Newark Liberty International Airport to Seattle-Tacoma International Airport Flights

  • How long is the flight from Newark Liberty International Airport to Seattle-Tacoma International Airport?

    Newark Liberty International Airport to Seattle-Tacoma International Airport takes about 5 hours 31 minutes on average. Actual flight time may vary depending on route, weather and air traffic.
  • There are around 5 daily flights from Newark Liberty International Airport (EWR) to Seattle-Tacoma International Airport (SEA).
  • The earliest flight from Newark Liberty International Airport to Seattle-Tacoma International Airport departs at 07:20, and the last departs at 20:25, with about 8 flights per day. Flight times may change, so please check the latest departure and arrival times before you travel.
  • The route from Newark Liberty International Airport (EWR) to Seattle-Tacoma International Airport (SEA) is quite popular. Without considering departure times or holidays, tickets cost around £293 in September, the most expensive month to book this route.
    • The distance from Seattle-Tacoma International Airport to downtown is about 17 km. It takes about 30 minutes by taxi.
  • United Airlines is a very popular airline operating an average of 4468 flights per month.
  • One-way flights from Newark Liberty International Airport to Seattle-Tacoma International Airport currently start from £109, and round-trip fares start from £230. The current lowest fare is a Alaska Airlines flight departing on Fri, Nov 13; prices may vary depending on availability.
  • Yes. United Airlines and Alaska Airlines operate direct flights from Newark Liberty International Airport to Seattle-Tacoma International Airport, with an average flight time of 5 hours 33 minutes, and around 46 weekly flights. Actual flight frequency may vary by season.
  • Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from Newark Liberty International Airport to Seattle-Tacoma International Airport is £199. Prices may vary depending on the departure date, airline, and availability.
  • Newark Liberty International Airport to Seattle-Tacoma International Airport operates around 41 weekly flights, mainly by United Airlines and Alaska Airlines. Actual frequency may vary during holidays and seasonal schedule adjustments.
  • Enter Newark Liberty International Airport and Seattle-Tacoma International Airport, select your departure date and number of passengers, then compare flights by price, flight duration, and baggage allowance. Once you've chosen a fare, review the change and refund rules, fill in passenger details, and pay to receive your booking confirmation.

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Note: Prices shown on this page are the lowest estimated prices found in the last 24 hours and include all taxes and fees.

Book with no extra fees

Prices displayed on this page are all-inclusive (incl. taxes, fuel surcharges, Civil Aviation Development Fund, etc.), and all fees are clearly shown before payment. Charges for checked baggage, onboard meals, Wi-Fi, and other optional services may also appear in the flight cards where applicable.

Real-time pricing updates

Prices, availability, and travel information on this page have been updated within the last 24 hours, and for many routes the data may refresh in real time. The more popular the route, the more accurate and up-to-date the data.

Change & Cancellation Policy

Trip.com shows the change and cancellation rules for each ticket during the booking process, including all related fees and conditions. Please refer to the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply based on the airline’s fare rules.
Cancellation/change due to a flight schedule change:
If your flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For full details of change and cancellation policies, please refer to the customer support pages.