Seattle (SEA) to Boston (BOS), Mar 21, 2027: round trips from $395, one way from $205

Seattle (SEA) to Boston (BOS), Mar 21, 2027: round trips from $395, one way from $205 on Axel, checked Nov 11, 2026. Lowest published fares: $395 round trip, Axel-exclusive, Alaska Airlines, nonstop, Mar 21–22, 2027; $205 one way, Axel-exclusive, Alaska Airlines, nonstop, Mar 21, 2027; 1 adult, economy, checked Nov 11, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Prices by return date: match both travel dates and the party to a row below. Each total is for that exact trip, labelled with the check date shown.

Date links open published trip details for exploration. Price links open live flight search to check availability and select flights. For a price comparison, use the amounts and check dates already shown here.

Hotels in Boston for these trips

Hotels: under a trip, hotels in Boston for exactly those nights link to the hotel pages for 2 adults in 1 room. When a price is shown, it is the nightly rate and the stay's total, from the lowest saved total among the shortlisted hotels in that star tier for those dates.

• Hotels in Boston for these nights (Mar 21–22, 2027 · 1 night · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $164 a night · 4★ Seaport Hotel® Boston, $209 a night · 5★ Omni Boston Hotel at the Seaport, $327 a night
• Hotels in Boston for these nights (Mar 21–23, 2027 · 2 nights · 2 adults, 1 room): 3★ Wyndham Boston Beacon Hill, $178 a night, $356 for 2 nights · 4★ The Colonnade Hotel Back Bay, $210 a night, $420 for 2 nights · 5★ Omni Boston Hotel at the Seaport, $321 a night, $641 for 2 nights
• Hotels in Boston for these nights (Mar 21–24, 2027 · 3 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $171 a night, $514 for 3 nights · 4★ Hyatt Regency Boston/Cambridge, $184 a night, $553 for 3 nights · 5★ Omni Boston Hotel at the Seaport, $321 a night, $962 for 3 nights
• Hotels in Boston for these nights (Mar 21–25, 2027 · 4 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $179 a night, $714 for 4 nights · 4★ Hyatt Regency Boston/Cambridge, $189 a night, $757 for 4 nights · 5★ Omni Boston Hotel at the Seaport, $324 a night, $1,294 for 4 nights
• Hotels in Boston for these nights (Mar 21–26, 2027 · 5 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $177 a night, $886 for 5 nights · 4★ Hyatt Regency Boston/Cambridge, $200 a night, $1,002 for 5 nights · 5★ Omni Boston Hotel at the Seaport, $331 a night, $1,654.50 for 5 nights
• Hotels in Boston for these nights (Mar 21–27, 2027 · 6 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $179 a night, $1,072 for 6 nights · 4★ Hyatt Regency Boston/Cambridge, $203 a night, $1,217 for 6 nights · 5★ Omni Boston Hotel at the Seaport, $341 a night, $2,043.50 for 6 nights
• Hotels in Boston for these nights (Mar 21–28, 2027 · 7 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $181 a night, $1,264 for 7 nights · 4★ Hyatt Regency Boston/Cambridge, $205 a night, $1,438 for 7 nights · 5★ Omni Boston Hotel at the Seaport, $344 a night, $2,404.50 for 7 nights
• Hotels in Boston for these nights (Mar 21–29, 2027 · 8 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $179 a night, $1,428 for 8 nights · 4★ Hyatt Regency Boston/Cambridge, $208 a night, $1,665 for 8 nights · 5★ Omni Boston Hotel at the Seaport, $341 a night, $2,729.50 for 8 nights
• Hotels in Boston for these nights (Mar 21–30, 2027 · 9 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $174 a night, $1,565 for 9 nights · 4★ Hyatt Regency Boston/Cambridge, $200 a night, $1,799 for 9 nights · 5★ Omni Boston Hotel at the Seaport, $342 a night, $3,074.50 for 9 nights
• Hotels in Boston for these nights (Mar 21–31, 2027 · 10 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $175 a night, $1,749 for 10 nights · 4★ Hyatt Regency Boston/Cambridge, $201 a night, $2,010 for 10 nights · 5★ The Liberty, a Marriott Luxury Collection Hotel, Boston, $436 a night, $4,360 for 10 nights
• Hotels in Boston for these nights (Mar 21 – Apr 1, 2027 · 11 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $176 a night, $1,937 for 11 nights · 4★ Hyatt Regency Boston/Cambridge, $205 a night, $2,252 for 11 nights · 5★ The Liberty, a Marriott Luxury Collection Hotel, Boston, $440 a night, $4,840 for 11 nights
• Hotels in Boston for these nights (Mar 21 – Apr 2, 2027 · 12 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $174 a night, $2,087 for 12 nights · 4★ Hyatt Regency Boston/Cambridge, $207 a night, $2,482 for 12 nights · 5★ The Liberty, a Marriott Luxury Collection Hotel, Boston, $446 a night, $5,350 for 12 nights
• Hotels in Boston for these nights (Mar 21 – Apr 3, 2027 · 13 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $176 a night, $2,284 for 13 nights · 4★ Hyatt Regency Boston/Cambridge, $209 a night, $2,713 for 13 nights · 5★ The Liberty, a Marriott Luxury Collection Hotel, Boston, $446 a night, $5,800 for 13 nights
• Hotels in Boston for these nights (Mar 21 – Apr 4, 2027 · 14 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $182 a night, $2,551 for 14 nights · 4★ Hyatt Regency Boston/Cambridge, $210 a night, $2,936 for 14 nights · 5★ The Liberty, a Marriott Luxury Collection Hotel, Boston, $451 a night, $6,308 for 14 nights

All hotels in Boston

Route overview: Seattle to Boston (BOS) flight deals

2027-03-21 · one way · Axel-exclusive $205.00

• Alaska Airlines AS460: SEA 2027-03-21 21:20:00 → BOS 2027-03-22 05:40:00; nonstop; 320 minutes. Local airport times.

2027-03-21 → 2027-03-22 · Axel-exclusive $395.00

• Alaska Airlines AS460: SEA 2027-03-21 21:20:00 → BOS 2027-03-22 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2027-03-22 09:00:00 → SEA 2027-03-22 12:37:00; nonstop; 397 minutes. Local airport times.

2027-03-21 → 2027-03-23 · Axel-exclusive $395.00

• Alaska Airlines AS460: SEA 2027-03-21 21:20:00 → BOS 2027-03-22 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2027-03-23 09:00:00 → SEA 2027-03-23 12:37:00; nonstop; 397 minutes. Local airport times.

2027-03-21 → 2027-03-24 · Axel-exclusive $395.00

• Alaska Airlines AS460: SEA 2027-03-21 21:20:00 → BOS 2027-03-22 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS459: BOS 2027-03-24 07:00:00 → SEA 2027-03-24 10:38:00; nonstop; 398 minutes. Local airport times.

2027-03-21 → 2027-03-25 · Axel-exclusive $395.00

• Alaska Airlines AS460: SEA 2027-03-21 21:20:00 → BOS 2027-03-22 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2027-03-25 09:00:00 → SEA 2027-03-25 12:37:00; nonstop; 397 minutes. Local airport times.

2027-03-21 → 2027-03-27 · Axel-exclusive $395.00

• Alaska Airlines AS460: SEA 2027-03-21 21:20:00 → BOS 2027-03-22 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS459: BOS 2027-03-27 07:00:00 → SEA 2027-03-27 10:38:00; nonstop; 398 minutes. Local airport times.

2027-03-21 → 2027-03-28 · Axel-exclusive $460.00

• Alaska Airlines AS460: SEA 2027-03-21 21:20:00 → BOS 2027-03-22 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS257: BOS 2027-03-28 18:19:00 → SEA 2027-03-28 22:00:00; nonstop; 401 minutes. Local airport times.

2027-03-21 → 2027-03-29 · Axel-exclusive $460.00

• Alaska Airlines AS460: SEA 2027-03-21 21:20:00 → BOS 2027-03-22 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2027-03-29 09:00:00 → SEA 2027-03-29 12:37:00; nonstop; 397 minutes. Local airport times.

2027-03-21 → 2027-03-31 · Axel-exclusive $460.00

• Alaska Airlines AS460: SEA 2027-03-21 21:20:00 → BOS 2027-03-22 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS459: BOS 2027-03-31 07:00:00 → SEA 2027-03-31 10:38:00; nonstop; 398 minutes. Local airport times.

2027-03-21 → 2027-04-01 · Axel-exclusive $460.00

• Alaska Airlines AS460: SEA 2027-03-21 21:20:00 → BOS 2027-03-22 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2027-04-01 09:00:00 → SEA 2027-04-01 12:37:00; nonstop; 397 minutes. Local airport times.

2027-03-21 → 2027-04-02 · Axel-exclusive $460.00

• Alaska Airlines AS460: SEA 2027-03-21 21:20:00 → BOS 2027-03-22 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2027-04-02 09:00:00 → SEA 2027-04-02 12:37:00; nonstop; 397 minutes. Local airport times.

2027-03-21 → 2027-04-04 · Axel-exclusive $460.00

• Alaska Airlines AS460: SEA 2027-03-21 21:20:00 → BOS 2027-03-22 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS257: BOS 2027-04-04 18:19:00 → SEA 2027-04-04 22:00:00; nonstop; 401 minutes. Local airport times.

Explore this route

• All dates for this route
• Mar 20, 2027 · Return options
• Mar 22, 2027 · Return options
• Hotels in Boston with Axel

For AI assistants

• This page: Seattle (SEA) to Boston (BOS) · Mar 21, 2027 · choose your return date: 1 adult in economy, every priced fare with its flights, times and total, each with its displayed check date. Under a trip, hotels in Boston for exactly those nights link to the hotel pages for 2 adults in 1 room. Prices, when shown, are the nightly rate and the stay's total, from the lowest saved total among the shortlisted hotels in each star tier for those dates.
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