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Seattle Tacoma Intl. Airport to Boston Logan International Airport flight

Search for flights from Seattle to Boston and check out affordable one-way and round-trip options.

      • Cheapest nonstop
        SEA 11:13 PM
        5h 22m
        Nonstop
        BOS 7:35 AM
        Seattle - Boston | Wed, Aug 26 | Delta Air Lines
        BOS 7:59 PM
        6h 13m
        Nonstop
        SEA 11:12 PM
        Boston - Seattle | Tue, Sep 1 | Alaska Airlines
        PLN 1,155 PLN 1,370
        16% off
        16% off
        PLN 1,370 PLN 1,155
      • SEA 5:10 AM
        8h 36m
        1 stop
        BOS 4:46 PM
        Seattle - Boston | Wed, Aug 26 | American Airlines
        BOS 7:59 PM
        6h 13m
        Nonstop
        SEA 11:12 PM
        Boston - Seattle | Wed, Sep 2 | Alaska Airlines
        PLN 1,125 PLN 1,370
        18% off
        18% off
        PLN 1,370 PLN 1,125
      • SEA 5:10 AM
        11h 4m
        1 stop
        BOS 7:14 PM
        Seattle - Boston | Sat, Aug 29 | American Airlines
        BOS 7:59 PM
        6h 13m
        Nonstop
        SEA 11:12 PM
        Boston - Seattle | Wed, Sep 2 | Alaska Airlines
        PLN 1,125 PLN 1,370
        18% off
        18% off
        PLN 1,370 PLN 1,125
      • SEA 6:15 PM
        8h 44m
        1 stop
        BOS 5:59 AM
        Seattle - Boston | Wed, Sep 2 | United Airlines
        BOS 10:38 AM
        8h 29m
        1 stop
        SEA 4:07 PM
        Boston - Seattle | Sun, Sep 6 | United Airlines
        PLN 1,148
        16% off
        PLN 1,370 PLN 1,148
      • SEA 9:58 PM
        8h 49m
        1 stop
        BOS 9:47 AM
        Seattle - Boston | Mon, Aug 31 | American Airlines
        BOS 3:20 PM
        10h 36m
        1 stop
        SEA 10:56 PM
        Boston - Seattle | Sat, Sep 5 | American Airlines
        PLN 1,184
        14% off
        PLN 1,370 PLN 1,184
      • SEA 10:28 PM
        7h 18m
        1 stop
        BOS 8:46 AM
        Seattle - Boston | Sun, Aug 30 | American Airlines
        BOS 7:59 PM
        6h 13m
        Nonstop
        SEA 11:12 PM
        Boston - Seattle | Wed, Sep 2 | Alaska Airlines
        PLN 1,246
        9% off
        PLN 1,370 PLN 1,246
      • SEA 1:00 PM
        17h 25m
        1 stop
        BOS 2:00 PM
        Seattle - Boston | Sat, Jul 11 | Normal Airline
        BOS 3:00 PM
        6h
        Nonstop
        SEA 4:00 PM
        Boston - Seattle | Mon, Jul 13 | Normal Airline
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      • Cheapest nonstop
        SEA 4:00 PM
        5h 14m
        Nonstop
        BOS 12:14 AM
        Seattle - Boston | Wed, Jul 29 | Delta Air Lines
        PLN 605 PLN 665
        9% off
        9% off
        PLN 665 PLN 605
      • SEA 6:15 PM
        8h 44m
        1 stop
        BOS 5:59 AM
        Seattle - Boston | Wed, Sep 2 | United Airlines
        PLN 516 PLN 665
        22% off
        22% off
        PLN 665 PLN 516
      • SEA 11:11 PM
        7h 18m
        1 stop
        BOS 9:29 AM
        Seattle - Boston | Wed, Jul 29 | United Airlines
        PLN 516 PLN 665
        22% off
        22% off
        PLN 665 PLN 516
      • SEA 6:15 PM
        8h 44m
        1 stop
        BOS 5:59 AM
        Seattle - Boston | Wed, Aug 12 | United Airlines
        PLN 516
        22% off
        PLN 665 PLN 516
      • SEA 11:00 PM
        7h 51m
        1 stop
        BOS 9:51 AM
        Seattle - Boston | Wed, Jul 22 | United Airlines
        PLN 531
        20% off
        PLN 665 PLN 531
      • SEA 5:05 AM
        11h 37m
        1 stop
        BOS 7:42 PM
        Seattle - Boston | Tue, Aug 25 | American Airlines
        PLN 571
        14% off
        PLN 665 PLN 571
      • SEA 5:43 PM
        9h 26m
        1 stop
        BOS 6:09 AM
        Seattle - Boston | Sat, Sep 5 | Alaska Airlines
        PLN 594
        11% off
        PLN 665 PLN 594
      • SEA 4:45 PM
        9h 55m
        1 stop
        BOS 5:40 AM
        Seattle - Boston | Wed, Aug 12 | Alaska Airlines
        PLN 597
        10% off
        PLN 665 PLN 597
      • SEA 1:00 PM
        17h 25m
        1 stop
        BOS 2:00 PM
        Seattle - Boston | Sat, Jul 11 | Normal Airline
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Displayed flight fares from Seattle Tacoma Intl. Airport to Boston Logan International Airport are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Trip.com Price Insights: Flights from Seattle Tacoma Intl. Airport to Boston Logan International Airport

What is the cheapest month for one-way flights from Seattle Tacoma Intl. Airport to Boston Logan International Airport?

Data is based on average one-way flight prices from Seattle Tacoma Intl. Airport to Boston Logan International Airport in Trip.com's database over the past 12 months.

Based on Trip.com’s data from the past 12 months, if you’re looking for a low-cost one-way ticket from Seattle Tacoma Intl. Airport to Boston Logan International Airport, the best time to buy is in April, with an average price of PLN 806. You’ll want to avoid January, when the average price can reach as high as PLN 1,302.

PLN 1,302
PLN 1,054
PLN 806
PLN 558
    Cheapest
  • PLN 834
    Jul
  • PLN 1,163
    Aug
  • PLN 893
    Sep
  • PLN 919
    Oct
  • PLN 904
    Nov
  • PLN 911
    Dec
  • PLN 1,302
    Jan
  • PLN 990
    Feb
  • PLN 926
    Mar
  • PLN 806
    Apr
  • PLN 835
    May
  • PLN 1,037
    Jun

What is the cheapest day of the week to fly from Seattle Tacoma Intl. Airport to Boston Logan International Airport?

The data is based on the past 12 months and shows the average ticket prices from Seattle Tacoma Intl. Airport to Boston Logan International Airport for each day of the week in the Trip.com database.

Based on Trip.com’s data from the past 12 months, the cheapest day to depart from Seattle Tacoma Intl. Airport to Boston Logan International Airport is Wednesday, with average fares typically lower than other days. You’ll want to avoid flying on Saturday, as ticket prices are usually the highest that day.

PLN 1,164
PLN 1,001
PLN 838
PLN 675
    Cheapest
  • PLN 962
    Mon
  • PLN 854
    Tue
  • PLN 838
    Wed
  • PLN 1,033
    Thu
  • PLN 888
    Fri
  • PLN 1,164
    Sat
  • PLN 1,043
    Sun

Selected Airlines from Seattle Tacoma Intl. Airport to Boston Logan International Airport

See which airlines fly from Seattle to Boston. Find the airline that best meets your travel needs by comparing prices and treat yourself to an enjoyable journey.

United Airlines
From PLN 516
American Airlines
From PLN 571
Alaska Airlines
From PLN 594
Delta Air Lines
From PLN 605
Frontier Airlines
From PLN 647
Hahn Air
From PLN 716
Jetblue Airways
From PLN 747
WestJet
From PLN 839
Sun Country Airlines
From PLN 891

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Flight Schedule from Seattle Tacoma Intl. Airport to Boston Logan International Airport

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

Flight info.
Departure
Arrival
Weekly Schedule

  1. AS460

    Seattle Tacoma Intl. Airport

    3:29 PM

    SEA

    5h 25m

    11:54 PM

    BOS

    S M T W T F S
    Search

  2. DL474

    Seattle Tacoma Intl. Airport

    3:55 PM

    SEA

    5h 25m

    12:20 AM

    BOS

    S M T W T - S
    Search

  3. DL473

    Seattle Tacoma Intl. Airport

    10:00 PM

    SEA

    5h 33m

    6:33 AM

    BOS

    S M T W T F S
    Search

  4. AA2881

    Seattle Tacoma Intl. Airport

    11:56 PM

    SEA

    4h 6m

    Nonstop

    6:02 AM

    ORD

    S M T W T F S
    Search

  5. AA2968

    O'Hare Intl. Airport

    6:54 AM

    ORD

    2h 34m

    Nonstop

    10:28 AM

    BOS

    S M T W T F S

  6. UA1274

    Seattle Tacoma Intl. Airport

    11:00 PM

    SEA

    5h 18m

    Nonstop

    7:18 AM

    EWR

    S M T W T F S
    Search

  7. UA1110

    Newark Liberty Intl. Airport Airport

    8:35 AM

    EWR

    1h 16m

    Nonstop

    9:51 AM

    BOS

    S M T W T F S

  8. UA1218

    Seattle Tacoma Intl. Airport

    7:04 PM

    SEA

    2h 44m

    Nonstop

    10:48 PM

    DEN

    S - T W T - S
    Search

  9. UA2656

    Denver International Airport

    11:59 PM

    DEN

    3h 54m

    Nonstop

    5:53 AM

    BOS

    S M T W T F S

  10. AS1348

    Seattle Tacoma Intl. Airport

    5:59 PM

    SEA

    2h 57m

    Nonstop

    8:56 PM

    SAN

    S M T W T F S
    Search

  11. AS255

    San Diego International Airport

    8:52 PM

    SAN

    5h 48m

    Nonstop

    5:40 AM

    BOS

    S M T W T F S

  12. AA381

    Seattle Tacoma Intl. Airport

    5:15 AM

    SEA

    5h 3m

    Nonstop

    1:18 PM

    CLT

    S M T W T F S
    Search

  13. AA2595

    Charlotte Douglas International Airport

    6:35 PM

    CLT

    2h 21m

    Nonstop

    8:56 PM

    BOS

    S M T W T F S

  14. AA2748

    Seattle Tacoma Intl. Airport

    5:05 AM

    SEA

    3h 57m

    Nonstop

    11:02 AM

    DFW

    S M T W T F S
    Search

  15. AA2306

    Dallas Fort Worth International Airport

    5:27 PM

    DFW

    3h 50m

    Nonstop

    10:17 PM

    BOS

    S M T W T F S
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Seattle Tacoma Intl. Airport to Boston Logan International Airport Flights Info

Flight distance 4,008.36 km
Cheapest one-way ticket price PLN 516
Cheapest return ticket price PLN 1,125

FAQs for Seattle Tacoma Intl. Airport to Boston Logan International Airport Flights

  • How long is a flight from Seattle Tacoma Intl. Airport to Boston Logan International Airport?

    It takes around 5 hours 27 minutes to fly from Seattle Tacoma Intl. Airport (sea) to Boston Logan International Airport (bos).
  • There are around 7 daily flights from Seattle Tacoma Intl. Airport (SEA) to Boston Logan International Airport (BOS).
  • Tickets cost around PLN 823 in September, making it the cheapest month to book. Seattle Tacoma Intl. Airport (SEA) to Boston Logan International Airport (BOS) is a popular route, so don't forget to book your tickets in advance.
  • The route from Seattle Tacoma Intl. Airport (SEA) to Boston Logan International Airport (BOS) is quite popular. Without considering departure times or holidays, tickets cost around PLN 1,165 in July, the most expensive month to book this route.
  • The earliest flight departs from Seattle Tacoma Intl. Airport (SEA) at 07:20 and arrives in Boston Logan International Airport (BOS) at 15:50.
  • The latest flight departs from Seattle Tacoma Intl. Airport (SEA) at 21:40 and arrives in Boston Logan International Airport (BOS) at 06:01.
  • American Airlines is a very popular airline operating an average of 2138 flights per month.

Popular Destinations

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

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.