Travel with Axel, get the best price.

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

Boston (BOS) to San Francisco (SFO), Feb 17, 2027: round trips from $396, one way from $228

Boston (BOS) to San Francisco (SFO), Feb 17, 2027: round trips from $396, one way from $228 on Axel, checked Oct 29, 2026. Lowest published fares: $396 round trip, Axel-exclusive, American Airlines, 1 stop, Feb 17–22, 2027; $228 one way, Axel-exclusive, American Airlines, 1 stop, Feb 17, 2027; 1 adult, economy, checked Oct 29, 2026.

BOS → SFO1 adulteconomyOne way and round trips

30 flight options · 3 airlines

Choose your return date

One-way flights and round trips by duration. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

February 2027

Flights for your trip

  1. Wed, Feb 17 · One way

    American Airlines
    9:00 amBOS
    9h 16m
    LAX · 1h 18m
    3:16 pmSFO

    One-way total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  2. Wed, Feb 17 · One way

    Delta Air Lines
    8:46 pmBOS
    6h 55m
    Nonstop
    12:41 am+1SFO

    One-way total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  3. Wed, Feb 17 – Thu, Feb 18

    American Airlines
    9:00 amBOS
    9h 16m
    LAX · 1h 18m
    3:16 pmSFO
    American Airlines
    11:46 pmSFO
    7h 46m
    ORD · 1h
    10:32 am+1BOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  4. Wed, Feb 17 – Thu, Feb 18

    Delta Air Lines
    8:46 pmBOS
    6h 55m
    Nonstop
    12:41 am+1SFO
    Delta Air Lines
    1:05 pmSFO
    5h 35m
    Nonstop
    9:40 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  5. Wed, Feb 17 – Fri, Feb 19

    American Airlines
    9:00 amBOS
    9h 16m
    LAX · 1h 18m
    3:16 pmSFO
    American Airlines
    11:46 pmSFO
    7h 46m
    ORD · 1h
    10:32 am+1BOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  6. Wed, Feb 17 – Fri, Feb 19

    United Airlines
    6:00 amBOS
    6h 51m
    Nonstop
    9:51 amSFO
    United Airlines
    8:15 amSFO
    5h 43m
    Nonstop
    4:58 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  7. Wed, Feb 17 – Sat, Feb 20

    American Airlines
    9:00 amBOS
    9h 16m
    LAX · 1h 18m
    3:16 pmSFO
    American Airlines
    11:46 pmSFO
    7h 46m
    ORD · 1h
    10:32 am+1BOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  8. Wed, Feb 17 – Sat, Feb 20

    Delta Air Lines
    8:46 pmBOS
    6h 55m
    Nonstop
    12:41 am+1SFO
    Delta Air Lines
    7:20 amSFO
    5h 35m
    Nonstop
    3:55 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  9. Wed, Feb 17 – Sun, Feb 21

    American Airlines
    9:00 amBOS
    9h 16m
    LAX · 1h 18m
    3:16 pmSFO
    American Airlines
    11:46 pmSFO
    7h 46m
    ORD · 1h
    10:32 am+1BOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  10. Wed, Feb 17 – Sun, Feb 21

    United Airlines
    6:00 amBOS
    6h 51m
    Nonstop
    9:51 amSFO
    United Airlines
    11:20 pmSFO
    5h 41m
    Nonstop
    8:01 am+1BOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  11. Wed, Feb 17 – Tue, Feb 23

    American Airlines
    9:00 amBOS
    9h 16m
    LAX · 1h 18m
    3:16 pmSFO
    American Airlines
    11:46 pmSFO
    7h 46m
    ORD · 1h
    10:32 am+1BOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  12. Wed, Feb 17 – Tue, Feb 23

    United Airlines
    6:00 amBOS
    6h 51m
    Nonstop
    9:51 amSFO
    United Airlines
    8:15 amSFO
    5h 43m
    Nonstop
    4:58 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  13. Wed, Feb 17 – Wed, Feb 24

    American Airlines
    9:00 amBOS
    9h 16m
    LAX · 1h 18m
    3:16 pmSFO
    American Airlines
    11:46 pmSFO
    7h 46m
    ORD · 1h
    10:32 am+1BOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  14. Wed, Feb 17 – Wed, Feb 24

    Delta Air Lines
    8:46 pmBOS
    6h 55m
    Nonstop
    12:41 am+1SFO
    Delta Air Lines
    1:05 pmSFO
    5h 35m
    Nonstop
    9:40 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  15. Wed, Feb 17 – Thu, Feb 25

    American Airlines
    9:00 amBOS
    9h 16m
    LAX · 1h 18m
    3:16 pmSFO
    American Airlines
    11:46 pmSFO
    7h 46m
    ORD · 1h
    10:32 am+1BOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  16. Wed, Feb 17 – Thu, Feb 25

    Delta Air Lines
    8:46 pmBOS
    6h 55m
    Nonstop
    12:41 am+1SFO
    Delta Air Lines
    1:05 pmSFO
    5h 35m
    Nonstop
    9:40 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  17. Wed, Feb 17 – Sat, Feb 27

    American Airlines
    9:00 amBOS
    9h 16m
    LAX · 1h 18m
    3:16 pmSFO
    American Airlines
    11:46 pmSFO
    7h 46m
    ORD · 1h
    10:32 am+1BOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  18. Wed, Feb 17 – Sat, Feb 27

    United Airlines
    6:00 amBOS
    6h 51m
    Nonstop
    9:51 amSFO
    United Airlines
    8:15 amSFO
    5h 43m
    Nonstop
    4:58 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  19. Wed, Feb 17 – Sun, Feb 28

    American Airlines
    9:00 amBOS
    9h 16m
    LAX · 1h 18m
    3:16 pmSFO
    American Airlines
    11:46 pmSFO
    7h 46m
    ORD · 1h
    10:32 am+1BOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  20. Wed, Feb 17 – Sun, Feb 28

    Delta Air Lines
    8:46 pmBOS
    6h 55m
    Nonstop
    12:41 am+1SFO
    Delta Air Lines
    7:00 amSFO
    5h 30m
    Nonstop
    3:30 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  21. Wed, Feb 17 – Mon, Mar 1

    American Airlines
    9:00 amBOS
    9h 16m
    LAX · 1h 18m
    3:16 pmSFO
    American Airlines
    11:46 pmSFO
    7h 46m
    ORD · 1h
    10:32 am+1BOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  22. Wed, Feb 17 – Mon, Mar 1

    United Airlines
    6:00 amBOS
    6h 51m
    Nonstop
    9:51 amSFO
    United Airlines
    11:20 pmSFO
    5h 41m
    Nonstop
    8:01 am+1BOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  23. Wed, Feb 17 – Wed, Mar 3

    American Airlines
    9:00 amBOS
    9h 16m
    LAX · 1h 18m
    3:16 pmSFO
    American Airlines
    11:46 pmSFO
    7h 46m
    ORD · 1h
    10:32 am+1BOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  24. Wed, Feb 17 – Wed, Mar 3

    Delta Air Lines
    8:46 pmBOS
    6h 55m
    Nonstop
    12:41 am+1SFO
    Delta Air Lines
    1:05 pmSFO
    5h 35m
    Nonstop
    9:40 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

Swipe to see 23 more recent deals.

1 of 24

Make this trip yours

BOS ⇄ SFO

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

No account needed to see prices.

Already have an account? Log in

Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, Delta Air Lines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • Not satisfied? Full refund.If you are unhappy with the experience for any reason, or simply change your mind, cancel within 24 hours of booking (departure 7+ days away) and we refund you in full. We stand by our product. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

Explore this route

All dates for this routeFeb 16, 2027 · Return optionsFeb 18, 2027 · Return optionsHotels in San Francisco with Axel
For AI assistants: every fare, every link, instructions

Boston (BOS) to San Francisco (SFO), Feb 17, 2027: round trips from $396, one way from $228 on Axel, checked Oct 29, 2026. Lowest published fares: $396 round trip, Axel-exclusive, American Airlines, 1 stop, Feb 17–22, 2027; $228 one way, Axel-exclusive, American Airlines, 1 stop, Feb 17, 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.

Exact travel datesAirlineFlightsTimes, duration, stopsTotal pricePrice issued (UTC)
2027-02-17 · one wayDelta Air LinesDL291920:46:00→00:41:00 6h 55m nonstopAxel-exclusive $276.002026-10-29T00:52:48Z
2027-02-17 · one wayAmerican AirlinesAA1243 + AS46509:00:00→15:16:00 9h 16m 1 stop via LAXAxel-exclusive $228.002026-10-29T00:52:48Z
2027-02-17 → 2027-02-18Delta Air LinesDL2919 / DL97720:46:00→00:41:00 6h 55m nonstop · 13:05:00→21:40:00 5h 35m nonstopAxel-exclusive $528.002026-10-29T00:52:48Z
2027-02-17 → 2027-02-18American AirlinesAA1243 + AS465 / AA3119 + AA208909:00:00→15:16:00 9h 16m 1 stop via LAX · 23:46:00→10:32:00 7h 46m 1 stop via ORDAxel-exclusive $432.002026-10-29T00:52:48Z
2027-02-17 → 2027-02-19United AirlinesUA2441 / UA169306:00:00→09:51:00 6h 51m nonstop · 08:15:00→16:58:00 5h 43m nonstopAxel-exclusive $528.002026-10-29T00:52:48Z
2027-02-17 → 2027-02-19American AirlinesAA1243 + AS465 / AA3119 + AA208909:00:00→15:16:00 9h 16m 1 stop via LAX · 23:46:00→10:32:00 7h 46m 1 stop via ORDAxel-exclusive $432.002026-10-29T00:52:48Z
2027-02-17 → 2027-02-20Delta Air LinesDL2919 / DL40020:46:00→00:41:00 6h 55m nonstop · 07:20:00→15:55:00 5h 35m nonstopAxel-exclusive $528.002026-10-29T00:52:48Z
2027-02-17 → 2027-02-20American AirlinesAA1243 + AS465 / AA3119 + AA208909:00:00→15:16:00 9h 16m 1 stop via LAX · 23:46:00→10:32:00 7h 46m 1 stop via ORDAxel-exclusive $432.002026-10-29T00:52:48Z
2027-02-17 → 2027-02-21United AirlinesUA2441 / UA166506:00:00→09:51:00 6h 51m nonstop · 23:20:00→08:01:00 5h 41m nonstopAxel-exclusive $528.002026-10-29T00:52:48Z
2027-02-17 → 2027-02-21American AirlinesAA1243 + AS465 / AA3119 + AA208909:00:00→15:16:00 9h 16m 1 stop via LAX · 23:46:00→10:32:00 7h 46m 1 stop via ORDAxel-exclusive $432.002026-10-29T00:52:48Z
2027-02-17 → 2027-02-22United AirlinesUA2441 / UA166506:00:00→09:51:00 6h 51m nonstop · 23:20:00→08:01:00 5h 41m nonstopAxel-exclusive $484.002026-10-29T00:52:48Z
2027-02-17 → 2027-02-22American AirlinesAA1243 + AS465 / AA3119 + AA208909:00:00→15:16:00 9h 16m 1 stop via LAX · 23:46:00→10:32:00 7h 46m 1 stop via ORDAxel-exclusive $396.002026-10-29T00:52:48Z
2027-02-17 → 2027-02-23United AirlinesUA2441 / UA169306:00:00→09:51:00 6h 51m nonstop · 08:15:00→16:58:00 5h 43m nonstopAxel-exclusive $484.002026-10-29T00:52:48Z
2027-02-17 → 2027-02-23American AirlinesAA1243 + AS465 / AA3119 + AA208909:00:00→15:16:00 9h 16m 1 stop via LAX · 23:46:00→10:32:00 7h 46m 1 stop via ORDAxel-exclusive $396.002026-10-29T00:52:48Z
2027-02-17 → 2027-02-24Delta Air LinesDL2919 / DL97720:46:00→00:41:00 6h 55m nonstop · 13:05:00→21:40:00 5h 35m nonstopAxel-exclusive $484.002026-10-29T00:52:48Z
2027-02-17 → 2027-02-24American AirlinesAA1243 + AS465 / AA3119 + AA208909:00:00→15:16:00 9h 16m 1 stop via LAX · 23:46:00→10:32:00 7h 46m 1 stop via ORDAxel-exclusive $396.002026-10-29T00:52:48Z
2027-02-17 → 2027-02-25Delta Air LinesDL2919 / DL97720:46:00→00:41:00 6h 55m nonstop · 13:05:00→21:40:00 5h 35m nonstopAxel-exclusive $484.002026-10-29T00:52:48Z
2027-02-17 → 2027-02-25American AirlinesAA1243 + AS465 / AA3119 + AA208909:00:00→15:16:00 9h 16m 1 stop via LAX · 23:46:00→10:32:00 7h 46m 1 stop via ORDAxel-exclusive $396.002026-10-29T00:52:48Z
2027-02-17 → 2027-02-26United AirlinesUA2441 / UA169306:00:00→09:51:00 6h 51m nonstop · 08:15:00→16:58:00 5h 43m nonstopAxel-exclusive $484.002026-10-29T00:52:48Z
2027-02-17 → 2027-02-26American AirlinesAA1243 + AS465 / AA3119 + AA208909:00:00→15:16:00 9h 16m 1 stop via LAX · 23:46:00→10:32:00 7h 46m 1 stop via ORDAxel-exclusive $396.002026-10-29T00:52:48Z
2027-02-17 → 2027-02-27United AirlinesUA2441 / UA169306:00:00→09:51:00 6h 51m nonstop · 08:15:00→16:58:00 5h 43m nonstopAxel-exclusive $484.002026-10-29T00:52:48Z
2027-02-17 → 2027-02-27American AirlinesAA1243 + AS465 / AA3119 + AA208909:00:00→15:16:00 9h 16m 1 stop via LAX · 23:46:00→10:32:00 7h 46m 1 stop via ORDAxel-exclusive $396.002026-10-29T00:52:48Z
2027-02-17 → 2027-02-28Delta Air LinesDL2919 / DL40020:46:00→00:41:00 6h 55m nonstop · 07:00:00→15:30:00 5h 30m nonstopAxel-exclusive $484.002026-10-29T00:52:48Z
2027-02-17 → 2027-02-28American AirlinesAA1243 + AS465 / AA3119 + AA208909:00:00→15:16:00 9h 16m 1 stop via LAX · 23:46:00→10:32:00 7h 46m 1 stop via ORDAxel-exclusive $396.002026-10-29T00:52:48Z
2027-02-17 → 2027-03-01United AirlinesUA2441 / UA166506:00:00→09:51:00 6h 51m nonstop · 23:20:00→08:01:00 5h 41m nonstopAxel-exclusive $495.002026-10-29T00:52:48Z
2027-02-17 → 2027-03-01American AirlinesAA1243 + AS465 / AA3119 + AA208909:00:00→15:16:00 9h 16m 1 stop via LAX · 23:46:00→10:32:00 7h 46m 1 stop via ORDAxel-exclusive $405.002026-10-29T00:52:48Z
2027-02-17 → 2027-03-02Delta Air LinesDL2919 / DL40020:46:00→00:41:00 6h 55m nonstop · 07:00:00→15:30:00 5h 30m nonstopAxel-exclusive $495.002026-10-29T00:52:48Z
2027-02-17 → 2027-03-02American AirlinesAA1243 + AS465 / AA3119 + AA208909:00:00→15:16:00 9h 16m 1 stop via LAX · 23:46:00→10:32:00 7h 46m 1 stop via ORDAxel-exclusive $405.002026-10-29T00:52:48Z
2027-02-17 → 2027-03-03Delta Air LinesDL2919 / DL97720:46:00→00:41:00 6h 55m nonstop · 13:05:00→21:40:00 5h 35m nonstopAxel-exclusive $495.002026-10-29T00:52:48Z
2027-02-17 → 2027-03-03American AirlinesAA1243 + AS465 / AA3119 + AA208909:00:00→15:16:00 9h 16m 1 stop via LAX · 23:46:00→10:32:00 7h 46m 1 stop via ORDAxel-exclusive $405.002026-10-29T00:52:48Z

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.

All hotels in San Francisco

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

2027-02-17 · one way · Axel-exclusive $228.00

  • American Airlines AA1243 / AS465: BOS 2027-02-17 09:00:00 → SFO 2027-02-17 15:16:00; 1 stop(s) via LAX; 556 minutes. Local airport times.
    • AA1243: BOS 2027-02-17 09:00:00 → LAX 2027-02-17 12:32:00; layover at LAX: 78 minutes.
    • AS465: LAX 2027-02-17 13:50:00 → SFO 2027-02-17 15:16:00.

2027-02-17 · one way · Axel-exclusive $276.00

  • Delta Air Lines DL2919: BOS 2027-02-17 20:46:00 → SFO 2027-02-18 00:41:00; nonstop; 415 minutes. Local airport times.

2027-02-17 → 2027-02-18 · Axel-exclusive $432.00

  • American Airlines AA1243 / AS465: BOS 2027-02-17 09:00:00 → SFO 2027-02-17 15:16:00; 1 stop(s) via LAX; 556 minutes. Local airport times.
    • AA1243: BOS 2027-02-17 09:00:00 → LAX 2027-02-17 12:32:00; layover at LAX: 78 minutes.
    • AS465: LAX 2027-02-17 13:50:00 → SFO 2027-02-17 15:16:00.
  • American Airlines AA3119 / AA2089: SFO 2027-02-18 23:46:00 → BOS 2027-02-19 10:32:00; 1 stop(s) via ORD; 466 minutes. Local airport times.
    • AA3119: SFO 2027-02-18 23:46:00 → ORD 2027-02-19 05:59:00; layover at ORD: 60 minutes.
    • AA2089: ORD 2027-02-19 06:59:00 → BOS 2027-02-19 10:32:00.

2027-02-17 → 2027-02-18 · Axel-exclusive $528.00

  • Delta Air Lines DL2919: BOS 2027-02-17 20:46:00 → SFO 2027-02-18 00:41:00; nonstop; 415 minutes. Local airport times.
  • Delta Air Lines DL977: SFO 2027-02-18 13:05:00 → BOS 2027-02-18 21:40:00; nonstop; 335 minutes. Local airport times.

2027-02-17 → 2027-02-19 · Axel-exclusive $432.00

  • American Airlines AA1243 / AS465: BOS 2027-02-17 09:00:00 → SFO 2027-02-17 15:16:00; 1 stop(s) via LAX; 556 minutes. Local airport times.
    • AA1243: BOS 2027-02-17 09:00:00 → LAX 2027-02-17 12:32:00; layover at LAX: 78 minutes.
    • AS465: LAX 2027-02-17 13:50:00 → SFO 2027-02-17 15:16:00.
  • American Airlines AA3119 / AA2089: SFO 2027-02-19 23:46:00 → BOS 2027-02-20 10:32:00; 1 stop(s) via ORD; 466 minutes. Local airport times.
    • AA3119: SFO 2027-02-19 23:46:00 → ORD 2027-02-20 05:59:00; layover at ORD: 60 minutes.
    • AA2089: ORD 2027-02-20 06:59:00 → BOS 2027-02-20 10:32:00.

2027-02-17 → 2027-02-19 · Axel-exclusive $528.00

  • United Airlines UA2441: BOS 2027-02-17 06:00:00 → SFO 2027-02-17 09:51:00; nonstop; 411 minutes. Local airport times.
  • United Airlines UA1693: SFO 2027-02-19 08:15:00 → BOS 2027-02-19 16:58:00; nonstop; 343 minutes. Local airport times.

2027-02-17 → 2027-02-20 · Axel-exclusive $432.00

  • American Airlines AA1243 / AS465: BOS 2027-02-17 09:00:00 → SFO 2027-02-17 15:16:00; 1 stop(s) via LAX; 556 minutes. Local airport times.
    • AA1243: BOS 2027-02-17 09:00:00 → LAX 2027-02-17 12:32:00; layover at LAX: 78 minutes.
    • AS465: LAX 2027-02-17 13:50:00 → SFO 2027-02-17 15:16:00.
  • American Airlines AA3119 / AA2089: SFO 2027-02-20 23:46:00 → BOS 2027-02-21 10:32:00; 1 stop(s) via ORD; 466 minutes. Local airport times.
    • AA3119: SFO 2027-02-20 23:46:00 → ORD 2027-02-21 05:59:00; layover at ORD: 60 minutes.
    • AA2089: ORD 2027-02-21 06:59:00 → BOS 2027-02-21 10:32:00.

2027-02-17 → 2027-02-20 · Axel-exclusive $528.00

  • Delta Air Lines DL2919: BOS 2027-02-17 20:46:00 → SFO 2027-02-18 00:41:00; nonstop; 415 minutes. Local airport times.
  • Delta Air Lines DL400: SFO 2027-02-20 07:20:00 → BOS 2027-02-20 15:55:00; nonstop; 335 minutes. Local airport times.

2027-02-17 → 2027-02-21 · Axel-exclusive $432.00

  • American Airlines AA1243 / AS465: BOS 2027-02-17 09:00:00 → SFO 2027-02-17 15:16:00; 1 stop(s) via LAX; 556 minutes. Local airport times.
    • AA1243: BOS 2027-02-17 09:00:00 → LAX 2027-02-17 12:32:00; layover at LAX: 78 minutes.
    • AS465: LAX 2027-02-17 13:50:00 → SFO 2027-02-17 15:16:00.
  • American Airlines AA3119 / AA2089: SFO 2027-02-21 23:46:00 → BOS 2027-02-22 10:32:00; 1 stop(s) via ORD; 466 minutes. Local airport times.
    • AA3119: SFO 2027-02-21 23:46:00 → ORD 2027-02-22 05:59:00; layover at ORD: 60 minutes.
    • AA2089: ORD 2027-02-22 06:59:00 → BOS 2027-02-22 10:32:00.

2027-02-17 → 2027-02-21 · Axel-exclusive $528.00

  • United Airlines UA2441: BOS 2027-02-17 06:00:00 → SFO 2027-02-17 09:51:00; nonstop; 411 minutes. Local airport times.
  • United Airlines UA1665: SFO 2027-02-21 23:20:00 → BOS 2027-02-22 08:01:00; nonstop; 341 minutes. Local airport times.

2027-02-17 → 2027-02-23 · Axel-exclusive $396.00

  • American Airlines AA1243 / AS465: BOS 2027-02-17 09:00:00 → SFO 2027-02-17 15:16:00; 1 stop(s) via LAX; 556 minutes. Local airport times.
    • AA1243: BOS 2027-02-17 09:00:00 → LAX 2027-02-17 12:32:00; layover at LAX: 78 minutes.
    • AS465: LAX 2027-02-17 13:50:00 → SFO 2027-02-17 15:16:00.
  • American Airlines AA3119 / AA2089: SFO 2027-02-23 23:46:00 → BOS 2027-02-24 10:32:00; 1 stop(s) via ORD; 466 minutes. Local airport times.
    • AA3119: SFO 2027-02-23 23:46:00 → ORD 2027-02-24 05:59:00; layover at ORD: 60 minutes.
    • AA2089: ORD 2027-02-24 06:59:00 → BOS 2027-02-24 10:32:00.

2027-02-17 → 2027-02-23 · Axel-exclusive $484.00

  • United Airlines UA2441: BOS 2027-02-17 06:00:00 → SFO 2027-02-17 09:51:00; nonstop; 411 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.

2027-02-17 → 2027-02-24 · Axel-exclusive $396.00

  • American Airlines AA1243 / AS465: BOS 2027-02-17 09:00:00 → SFO 2027-02-17 15:16:00; 1 stop(s) via LAX; 556 minutes. Local airport times.
    • AA1243: BOS 2027-02-17 09:00:00 → LAX 2027-02-17 12:32:00; layover at LAX: 78 minutes.
    • AS465: LAX 2027-02-17 13:50:00 → SFO 2027-02-17 15:16:00.
  • American Airlines AA3119 / AA2089: SFO 2027-02-24 23:46:00 → BOS 2027-02-25 10:32:00; 1 stop(s) via ORD; 466 minutes. Local airport times.
    • AA3119: SFO 2027-02-24 23:46:00 → ORD 2027-02-25 05:59:00; layover at ORD: 60 minutes.
    • AA2089: ORD 2027-02-25 06:59:00 → BOS 2027-02-25 10:32:00.

2027-02-17 → 2027-02-24 · Axel-exclusive $484.00

  • Delta Air Lines DL2919: BOS 2027-02-17 20:46:00 → SFO 2027-02-18 00:41:00; nonstop; 415 minutes. Local airport times.
  • Delta Air Lines DL977: SFO 2027-02-24 13:05:00 → BOS 2027-02-24 21:40:00; nonstop; 335 minutes. Local airport times.

2027-02-17 → 2027-02-25 · Axel-exclusive $396.00

  • American Airlines AA1243 / AS465: BOS 2027-02-17 09:00:00 → SFO 2027-02-17 15:16:00; 1 stop(s) via LAX; 556 minutes. Local airport times.
    • AA1243: BOS 2027-02-17 09:00:00 → LAX 2027-02-17 12:32:00; layover at LAX: 78 minutes.
    • AS465: LAX 2027-02-17 13:50:00 → SFO 2027-02-17 15:16:00.
  • American Airlines AA3119 / AA2089: SFO 2027-02-25 23:46:00 → BOS 2027-02-26 10:32:00; 1 stop(s) via ORD; 466 minutes. Local airport times.
    • AA3119: SFO 2027-02-25 23:46:00 → ORD 2027-02-26 05:59:00; layover at ORD: 60 minutes.
    • AA2089: ORD 2027-02-26 06:59:00 → BOS 2027-02-26 10:32:00.

2027-02-17 → 2027-02-25 · Axel-exclusive $484.00

  • Delta Air Lines DL2919: BOS 2027-02-17 20:46:00 → SFO 2027-02-18 00:41:00; nonstop; 415 minutes. Local airport times.
  • Delta Air Lines DL977: SFO 2027-02-25 13:05:00 → BOS 2027-02-25 21:40:00; nonstop; 335 minutes. Local airport times.

2027-02-17 → 2027-02-27 · Axel-exclusive $396.00

  • American Airlines AA1243 / AS465: BOS 2027-02-17 09:00:00 → SFO 2027-02-17 15:16:00; 1 stop(s) via LAX; 556 minutes. Local airport times.
    • AA1243: BOS 2027-02-17 09:00:00 → LAX 2027-02-17 12:32:00; layover at LAX: 78 minutes.
    • AS465: LAX 2027-02-17 13:50:00 → SFO 2027-02-17 15:16:00.
  • American Airlines AA3119 / AA2089: SFO 2027-02-27 23:46:00 → BOS 2027-02-28 10:32:00; 1 stop(s) via ORD; 466 minutes. Local airport times.
    • AA3119: SFO 2027-02-27 23:46:00 → ORD 2027-02-28 05:59:00; layover at ORD: 60 minutes.
    • AA2089: ORD 2027-02-28 06:59:00 → BOS 2027-02-28 10:32:00.

2027-02-17 → 2027-02-27 · Axel-exclusive $484.00

  • United Airlines UA2441: BOS 2027-02-17 06:00:00 → SFO 2027-02-17 09:51:00; nonstop; 411 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.

2027-02-17 → 2027-02-28 · Axel-exclusive $396.00

  • American Airlines AA1243 / AS465: BOS 2027-02-17 09:00:00 → SFO 2027-02-17 15:16:00; 1 stop(s) via LAX; 556 minutes. Local airport times.
    • AA1243: BOS 2027-02-17 09:00:00 → LAX 2027-02-17 12:32:00; layover at LAX: 78 minutes.
    • AS465: LAX 2027-02-17 13:50:00 → SFO 2027-02-17 15:16:00.
  • American Airlines AA3119 / AA2089: SFO 2027-02-28 23:46:00 → BOS 2027-03-01 10:32:00; 1 stop(s) via ORD; 466 minutes. Local airport times.
    • AA3119: SFO 2027-02-28 23:46:00 → ORD 2027-03-01 05:59:00; layover at ORD: 60 minutes.
    • AA2089: ORD 2027-03-01 06:59:00 → BOS 2027-03-01 10:32:00.

2027-02-17 → 2027-02-28 · Axel-exclusive $484.00

  • Delta Air Lines DL2919: BOS 2027-02-17 20:46:00 → SFO 2027-02-18 00:41:00; nonstop; 415 minutes. Local airport times.
  • Delta Air Lines DL400: SFO 2027-02-28 07:00:00 → BOS 2027-02-28 15:30:00; nonstop; 330 minutes. Local airport times.

2027-02-17 → 2027-03-01 · Axel-exclusive $405.00

  • American Airlines AA1243 / AS465: BOS 2027-02-17 09:00:00 → SFO 2027-02-17 15:16:00; 1 stop(s) via LAX; 556 minutes. Local airport times.
    • AA1243: BOS 2027-02-17 09:00:00 → LAX 2027-02-17 12:32:00; layover at LAX: 78 minutes.
    • AS465: LAX 2027-02-17 13:50:00 → SFO 2027-02-17 15:16:00.
  • American Airlines AA3119 / AA2089: SFO 2027-03-01 23:46:00 → BOS 2027-03-02 10:32:00; 1 stop(s) via ORD; 466 minutes. Local airport times.
    • AA3119: SFO 2027-03-01 23:46:00 → ORD 2027-03-02 05:59:00; layover at ORD: 60 minutes.
    • AA2089: ORD 2027-03-02 06:59:00 → BOS 2027-03-02 10:32:00.

2027-02-17 → 2027-03-01 · Axel-exclusive $495.00

  • United Airlines UA2441: BOS 2027-02-17 06:00:00 → SFO 2027-02-17 09:51:00; nonstop; 411 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.

2027-02-17 → 2027-03-03 · Axel-exclusive $405.00

  • American Airlines AA1243 / AS465: BOS 2027-02-17 09:00:00 → SFO 2027-02-17 15:16:00; 1 stop(s) via LAX; 556 minutes. Local airport times.
    • AA1243: BOS 2027-02-17 09:00:00 → LAX 2027-02-17 12:32:00; layover at LAX: 78 minutes.
    • AS465: LAX 2027-02-17 13:50:00 → SFO 2027-02-17 15:16:00.
  • American Airlines AA3119 / AA2089: SFO 2027-03-03 23:46:00 → BOS 2027-03-04 10:32:00; 1 stop(s) via ORD; 466 minutes. Local airport times.
    • AA3119: SFO 2027-03-03 23:46:00 → ORD 2027-03-04 05:59:00; layover at ORD: 60 minutes.
    • AA2089: ORD 2027-03-04 06:59:00 → BOS 2027-03-04 10:32:00.

2027-02-17 → 2027-03-03 · Axel-exclusive $495.00

  • Delta Air Lines DL2919: BOS 2027-02-17 20:46:00 → SFO 2027-02-18 00:41:00; nonstop; 415 minutes. Local airport times.
  • Delta Air Lines DL977: SFO 2027-03-03 13:05:00 → BOS 2027-03-03 21:40:00; nonstop; 335 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: Boston (BOS) to San Francisco (SFO) · Feb 17, 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.
  • Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
  • If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel Boston to San Francisco (SFO) flight deals · Flight search guide.
  • Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Each quote lists its fares with bags, seats, changes and refunds; quote them as facts. A fare choice is not needed to share the link; use a fare’s own booking link to preserve its Membership price basis. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and say what is still to choose. If no supplied link matches the latest trip, construct https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace /return/YYYY-MM-DD with /trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.