Boston (BOS) to San Francisco (SFO), Feb 21, 2027: round trips from $484, one way from $276

Boston (BOS) to San Francisco (SFO), Feb 21, 2027: round trips from $484, one way from $276 on Axel, checked Oct 29, 2026. Lowest published fares: $484 round trip, Axel-exclusive, United Airlines, nonstop, Feb 21–22, 2027; $276 one way, Axel-exclusive, United Airlines, nonstop, Feb 21, 2027; 1 adult, economy, checked Oct 29, 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, issued at the time 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 issuance times already shown here.

Hotels in San Francisco for these trips

Hotels: under a trip, hotels in San Francisco for exactly those nights link to the hotel pages for 2 adults in 1 room. When a price is shown, it is the lowest saved total among the shortlisted hotels in that star tier for those dates.

• Hotels in San Francisco for these nights (Feb 21–22, 2027 · 1 night · 2 adults, 1 room): 3★ Hotel Del Sol · 4★ LUMA Hotel San Francisco · 5★ Four Seasons Hotel San Francisco at Embarcadero
• Hotels in San Francisco for these nights (Feb 21–23, 2027 · 2 nights · 2 adults, 1 room): 3★ Hotel Del Sol · 4★ LUMA Hotel San Francisco · 5★ Four Seasons Hotel San Francisco at Embarcadero
• Hotels in San Francisco for these nights (Feb 21–24, 2027 · 3 nights · 2 adults, 1 room): 3★ Hotel Del Sol · 4★ LUMA Hotel San Francisco · 5★ Four Seasons Hotel San Francisco at Embarcadero
• Hotels in San Francisco for these nights (Feb 21–25, 2027 · 4 nights · 2 adults, 1 room): 3★ Hotel Del Sol · 4★ LUMA Hotel San Francisco · 5★ Four Seasons Hotel San Francisco at Embarcadero
• Hotels in San Francisco for these nights (Feb 21–26, 2027 · 5 nights · 2 adults, 1 room): 3★ Hotel Del Sol · 4★ LUMA Hotel San Francisco · 5★ Four Seasons Hotel San Francisco at Embarcadero
• Hotels in San Francisco for these nights (Feb 21–27, 2027 · 6 nights · 2 adults, 1 room): 3★ Hotel Del Sol · 4★ LUMA Hotel San Francisco · 5★ Four Seasons Hotel San Francisco at Embarcadero
• Hotels in San Francisco for these nights (Feb 21–28, 2027 · 7 nights · 2 adults, 1 room): 3★ Hotel Del Sol · 4★ LUMA Hotel San Francisco · 5★ Four Seasons Hotel San Francisco at Embarcadero
• Hotels in San Francisco for these nights (Feb 21 – Mar 1, 2027 · 8 nights · 2 adults, 1 room): 3★ Hotel Del Sol · 4★ LUMA Hotel San Francisco · 5★ Four Seasons Hotel San Francisco at Embarcadero
• Hotels in San Francisco for these nights (Feb 21 – Mar 2, 2027 · 9 nights · 2 adults, 1 room): 3★ Hotel Del Sol · 4★ LUMA Hotel San Francisco · 5★ Four Seasons Hotel San Francisco at Embarcadero
• Hotels in San Francisco for these nights (Feb 21 – Mar 3, 2027 · 10 nights · 2 adults, 1 room): 3★ Hotel Del Sol · 4★ LUMA Hotel San Francisco · 5★ Four Seasons Hotel San Francisco at Embarcadero
• Hotels in San Francisco for these nights (Feb 21 – Mar 4, 2027 · 11 nights · 2 adults, 1 room): 3★ Hotel Del Sol · 4★ LUMA Hotel San Francisco · 5★ Four Seasons Hotel San Francisco at Embarcadero
• Hotels in San Francisco for these nights (Feb 21 – Mar 5, 2027 · 12 nights · 2 adults, 1 room): 3★ Hotel Del Sol · 4★ LUMA Hotel San Francisco · 5★ Four Seasons Hotel San Francisco at Embarcadero
• Hotels in San Francisco for these nights (Feb 21 – Mar 6, 2027 · 13 nights · 2 adults, 1 room): 3★ Hotel Del Sol · 4★ LUMA Hotel San Francisco · 5★ Four Seasons Hotel San Francisco at Embarcadero
• Hotels in San Francisco for these nights (Feb 21 – Mar 7, 2027 · 14 nights · 2 adults, 1 room): 3★ Hotel Del Sol · 4★ LUMA Hotel San Francisco · 5★ Four Seasons Hotel San Francisco at Embarcadero

All hotels in San Francisco

Route overview: Boston to San Francisco (SFO) flight deals

2027-02-21 · one way · Axel-exclusive $276.00

• United Airlines UA1023: BOS 2027-02-21 07:30:00 → SFO 2027-02-21 11:25:00; nonstop; 415 minutes. Local airport times.

2027-02-21 → 2027-02-22 · Axel-exclusive $484.00

• United Airlines UA1023: BOS 2027-02-21 07:30:00 → SFO 2027-02-21 11:25:00; nonstop; 415 minutes. Local airport times.
• United Airlines UA1665: SFO 2027-02-22 23:20:00 → BOS 2027-02-23 08:01:00; nonstop; 341 minutes. Local airport times.

2027-02-21 → 2027-02-23 · Axel-exclusive $484.00

• United Airlines UA1023: BOS 2027-02-21 07:30:00 → SFO 2027-02-21 11:25:00; nonstop; 415 minutes. Local airport times.
• United Airlines UA1693: SFO 2027-02-23 08:15:00 → BOS 2027-02-23 16:58:00; nonstop; 343 minutes. Local airport times.

2027-02-21 → 2027-02-24 · Axel-exclusive $484.00

• United Airlines UA1023: BOS 2027-02-21 07:30:00 → SFO 2027-02-21 11:25:00; nonstop; 415 minutes. Local airport times.
• United Airlines UA1665: SFO 2027-02-24 23:20:00 → BOS 2027-02-25 08:01:00; nonstop; 341 minutes. Local airport times.

2027-02-21 → 2027-02-25 · Axel-exclusive $484.00

• United Airlines UA1023: BOS 2027-02-21 07:30:00 → SFO 2027-02-21 11:25:00; nonstop; 415 minutes. Local airport times.
• United Airlines UA1665: SFO 2027-02-25 23:20:00 → BOS 2027-02-26 08:01:00; nonstop; 341 minutes. Local airport times.

2027-02-21 → 2027-02-27 · Axel-exclusive $484.00

• United Airlines UA1023: BOS 2027-02-21 07:30:00 → SFO 2027-02-21 11:25:00; nonstop; 415 minutes. Local airport times.
• United Airlines UA1693: SFO 2027-02-27 08:15:00 → BOS 2027-02-27 16:58:00; nonstop; 343 minutes. Local airport times.

2027-02-21 → 2027-02-28 · Axel-exclusive $484.00

• United Airlines UA1023: BOS 2027-02-21 07:30:00 → SFO 2027-02-21 11:25:00; nonstop; 415 minutes. Local airport times.
• United Airlines UA1665: SFO 2027-02-28 23:20:00 → BOS 2027-03-01 08:01:00; nonstop; 341 minutes. Local airport times.

2027-02-21 → 2027-03-01 · Axel-exclusive $495.00

• United Airlines UA1023: BOS 2027-02-21 07:30:00 → SFO 2027-02-21 11:25:00; nonstop; 415 minutes. Local airport times.
• United Airlines UA1665: SFO 2027-03-01 23:20:00 → BOS 2027-03-02 08:01:00; nonstop; 341 minutes. Local airport times.

2027-02-21 → 2027-03-03 · Axel-exclusive $495.00

• United Airlines UA1023: BOS 2027-02-21 07:30:00 → SFO 2027-02-21 11:25:00; nonstop; 415 minutes. Local airport times.
• United Airlines UA1665: SFO 2027-03-03 23:20:00 → BOS 2027-03-04 08:01:00; nonstop; 341 minutes. Local airport times.

2027-02-21 → 2027-03-04 · Axel-exclusive $495.00

• United Airlines UA1023: BOS 2027-02-21 07:30:00 → SFO 2027-02-21 11:25:00; nonstop; 415 minutes. Local airport times.
• United Airlines UA1665: SFO 2027-03-04 23:20:00 → BOS 2027-03-05 08:01:00; nonstop; 341 minutes. Local airport times.

2027-02-21 → 2027-03-05 · Axel-exclusive $495.00

• United Airlines UA1023: BOS 2027-02-21 07:30:00 → SFO 2027-02-21 11:25:00; nonstop; 415 minutes. Local airport times.
• United Airlines UA1693: SFO 2027-03-05 08:15:00 → BOS 2027-03-05 16:58:00; nonstop; 343 minutes. Local airport times.

2027-02-21 → 2027-03-07 · Axel-exclusive $495.00

• United Airlines UA1023: BOS 2027-02-21 07:30:00 → SFO 2027-02-21 11:25:00; nonstop; 415 minutes. Local airport times.
• United Airlines UA1665: SFO 2027-03-07 23:20:00 → BOS 2027-03-08 08:01:00; nonstop; 341 minutes. Local airport times.

Explore this route

• All dates for this route
• Feb 20, 2027 · Return options
• Feb 22, 2027 · Return options
• Hotels in San Francisco with Axel

For AI assistants

• This page: Boston (BOS) to San Francisco (SFO) · Feb 21, 2027 · choose your return date: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued. Under a trip, hotels in San Francisco for exactly those nights link to the hotel pages for 2 adults in 1 room. Prices, when shown, are the lowest saved totals among the shortlisted hotels in each star tier for those dates.
• Next: each row is one exact trip for this departure (both dates with the year, the total and the time its price was issued); its exact-trip price link opens the live search for those dates and travelers, where the booking link and the current total are. Other durations or travelers are not priced here: Choose travelers and dates prices the requested trip.
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