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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 | Fri, Aug 28 | Delta Air Lines
        BOS 7:59 PM
        6h 13m
        Nonstop
        SEA 11:12 PM
        Boston - Seattle | Thu, Sep 3 | Alaska Airlines
        £231 £279
        17% off
        17% off
        £279 £231
      • SEA 6:40 AM
        9h
        1 stop
        BOS 6:40 PM
        Seattle - Boston | Mon, Sep 21 | American Airlines
        BOS 6:00 AM
        8h 40m
        1 stop
        SEA 11:40 AM
        Boston - Seattle | Fri, Sep 25 | American Airlines
        £213 £279
        24% off
        24% off
        £279 £213
      • SEA 8:24 AM
        8h 52m
        1 stop
        BOS 8:16 PM
        Seattle - Boston | Thu, Sep 24 | American Airlines
        BOS 6:00 AM
        8h 40m
        1 stop
        SEA 11:40 AM
        Boston - Seattle | Mon, Sep 28 | American Airlines
        £213 £279
        24% off
        24% off
        £279 £213
      • SEA 10:45 PM
        8h 40m
        1 stop
        BOS 10:25 AM
        Seattle - Boston | Fri, Sep 11 | American Airlines
        BOS 8:54 AM
        9h 23m
        1 stop
        SEA 3:17 PM
        Boston - Seattle | Fri, Sep 18 | American Airlines
        £219
        22% off
        £279 £219
      • SEA 5:10 AM
        8h 36m
        1 stop
        BOS 4:46 PM
        Seattle - Boston | Fri, Aug 28 | American Airlines
        BOS 7:59 PM
        6h 13m
        Nonstop
        SEA 11:12 PM
        Boston - Seattle | Fri, Sep 4 | Alaska Airlines
        £225
        19% off
        £279 £225
      • SEA 5:10 AM
        11h 4m
        1 stop
        BOS 7:14 PM
        Seattle - Boston | Mon, Aug 31 | American Airlines
        BOS 7:59 PM
        6h 13m
        Nonstop
        SEA 11:12 PM
        Boston - Seattle | Fri, Sep 4 | Alaska Airlines
        £225
        19% off
        £279 £225
      • SEA 1:57 PM
        8h 13m
        1 stop
        BOS 1:10 AM
        Seattle - Boston | Fri, Sep 11 | United Airlines
        BOS 5:08 PM
        8h 56m
        1 stop
        SEA 11:04 PM
        Boston - Seattle | Sun, Sep 13 | United Airlines
        £225
        19% off
        £279 £225
      • SEA 10:58 PM
        7h 50m
        1 stop
        BOS 9:48 AM
        Seattle - Boston | Thu, Sep 17 | United Airlines
        BOS 6:00 AM
        9h 20m
        1 stop
        SEA 12:20 PM
        Boston - Seattle | Tue, Sep 22 | United Airlines
        £228
        18% off
        £279 £228
      • SEA 6:15 PM
        8h 44m
        1 stop
        BOS 5:59 AM
        Seattle - Boston | Fri, Sep 4 | United Airlines
        BOS 10:38 AM
        8h 29m
        1 stop
        SEA 4:07 PM
        Boston - Seattle | Tue, Sep 8 | United Airlines
        £229
        18% off
        £279 £229
      • SEA 1:00 PM
        17h 25m
        1 stop
        BOS 2:00 PM
        Seattle - Boston | Sat, Aug 1 | Normal Airline
        BOS 3:00 PM
        6h
        Nonstop
        SEA 4:00 PM
        Boston - Seattle | Mon, Aug 3 | Normal Airline
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      • Cheapest nonstop
        SEA 11:06 PM
        5h 33m
        Nonstop
        BOS 7:39 AM
        Seattle - Boston | Thu, Sep 17 | Alaska Airlines
        £116 £140
        17% off
        17% off
        £140 £116
      • SEA 11:08 PM
        5h 32m
        Nonstop
        BOS 7:40 AM
        Seattle - Boston | Mon, Sep 14 | Delta Air Lines
        £116 £140
        17% off
        17% off
        £140 £116
      • SEA 5:10 AM
        11h 4m
        1 stop
        BOS 7:14 PM
        Seattle - Boston | Fri, Sep 4 | American Airlines
        £108 £140
        23% off
        23% off
        £140 £108
      • SEA 9:58 PM
        9h 26m
        1 stop
        BOS 10:24 AM
        Seattle - Boston | Thu, Sep 10 | American Airlines
        £111
        21% off
        £140 £111
      • SEA 8:20 AM
        10h 29m
        1 stop
        BOS 9:49 PM
        Seattle - Boston | Fri, Sep 18 | American Airlines
        £112
        20% off
        £140 £112
      • SEA 10:17 AM
        10h 38m
        1 stop
        BOS 11:55 PM
        Seattle - Boston | Thu, Sep 24 | American Airlines
        £114
        19% off
        £140 £114
      • SEA 11:57 PM
        9h 42m
        1 stop
        BOS 12:39 PM
        Seattle - Boston | Fri, Sep 11 | American Airlines
        £114
        19% off
        £140 £114
      • SEA 5:30 AM
        11h 22m
        1 stop
        BOS 7:52 PM
        Seattle - Boston | Mon, Sep 28 | American Airlines
        £114
        19% off
        £140 £114
      • SEA 5:05 AM
        11h 37m
        1 stop
        BOS 7:42 PM
        Seattle - Boston | Thu, Aug 27 | American Airlines
        £114
        19% off
        £140 £114
      • SEA 1:00 PM
        17h 25m
        1 stop
        BOS 2:00 PM
        Seattle - Boston | Sat, Aug 1 | Normal Airline
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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 £161. You’ll want to avoid January, when the average price can reach as high as £260.

£260
£211
£161
£112
    Cheapest
  • £162
    Jul
  • £232
    Aug
  • £178
    Sep
  • £184
    Oct
  • £181
    Nov
  • £182
    Dec
  • £260
    Jan
  • £198
    Feb
  • £185
    Mar
  • £161
    Apr
  • £167
    May
  • £207
    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 Tuesday, 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.

£236
£203
£170
£137
  • £194
    Mon
  • £170
    Tue
  • £172
    Wed
  • £210
    Thu
  • £193
    Fri
  • £236
    Sat
  • £214
    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.

American Airlines
From £108
Alaska Airlines
From £116
Delta Air Lines
From £116
United Airlines
From £120
Hahn Air
From £143
Jetblue Airways
From £149
Qatar Airways
From £168
WestJet
From £168
Sun Country Airlines
From £174

Find more flights and airlines

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

    3:32 PM

    SEA

    5h 27m

    11:59 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. AA2886

    Seattle Tacoma Intl. Airport

    10:47 PM

    SEA

    5h 12m

    Nonstop

    6:59 AM

    PHL

    - - T W - - -
    Search

  5. AA2685

    Philadelphia International Airport

    8:50 AM

    PHL

    1h 41m

    Nonstop

    10:31 AM

    BOS

    - - T W - - -

  6. AA1667

    Seattle Tacoma Intl. Airport

    7:26 AM

    SEA

    3h 54m

    Nonstop

    1:20 PM

    DFW

    S M T W T F S
    Search

  7. AA2306

    Dallas Fort Worth International Airport

    5:27 PM

    DFW

    3h 50m

    Nonstop

    10:17 PM

    BOS

    S M T W T F S

  8. AA2886

    Seattle Tacoma Intl. Airport

    10:47 PM

    SEA

    5h 12m

    Nonstop

    6:59 AM

    PHL

    - - T W - - -
    Search

  9. AA1416

    Philadelphia International Airport

    10:30 AM

    PHL

    1h 33m

    Nonstop

    12:03 PM

    BOS

    S M T W T F S

  10. AA707

    Seattle Tacoma Intl. Airport

    10:22 AM

    SEA

    4h 8m

    Nonstop

    4:30 PM

    DFW

    S M T W T F S
    Search

  11. AA1366

    Dallas Fort Worth International Airport

    7:11 PM

    DFW

    3h 48m

    Nonstop

    11:59 PM

    BOS

    - - T W - - 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. AA1155

    Charlotte Douglas International Airport

    5:40 PM

    CLT

    2h 24m

    Nonstop

    8:04 PM

    BOS

    - - T W - - -

  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 £108
Cheapest return ticket price £213

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 28 minutes to fly from Seattle Tacoma Intl. Airport (sea) to Boston Logan International Airport (bos).
  • There are around 8 daily flights from Seattle Tacoma Intl. Airport (SEA) to Boston Logan International Airport (BOS).
  • Tickets cost around £173 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 £220 in August, 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

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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.