Travel with Axel,
get the best price.

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

Boston → San Francisco

Dec 23, 2026 · choose your return date

BOS → SFO1 adulteconomyOne way and round trips

30 flight options · 4 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.

December 2026

Dec 23, 2026 · One waySouthwest AirlinesUp to 1 stop each way$268.25 Dec 23, 2026 · One wayJetBlue AirwaysNonstop$304.50 Dec 23, 2026 – Dec 24, 2026 · 1 nightSouthwest AirlinesUp to 1 stop each way$507.50 Dec 23, 2026 – Dec 24, 2026 · 1 nightJetBlue AirwaysNonstop$580.00 Dec 23, 2026 – Dec 25, 2026 · 2 nightsSouthwest AirlinesUp to 1 stop each way$507.50 Dec 23, 2026 – Dec 25, 2026 · 2 nightsJetBlue AirwaysNonstop$580.00 Dec 23, 2026 – Dec 26, 2026 · 3 nightsSouthwest AirlinesUp to 1 stop each way$507.50 Dec 23, 2026 – Dec 26, 2026 · 3 nightsJetBlue AirwaysNonstop$580.00 Dec 23, 2026 – Dec 27, 2026 · 4 nightsSouthwest AirlinesUp to 1 stop each way$507.50 Dec 23, 2026 – Dec 27, 2026 · 4 nightsDelta Air LinesNonstop$638.00 Dec 23, 2026 – Dec 28, 2026 · 5 nightsSouthwest AirlinesUp to 1 stop each way$507.50 Dec 23, 2026 – Dec 28, 2026 · 5 nightsJetBlue AirwaysNonstop$580.00 Dec 23, 2026 – Dec 29, 2026 · 6 nightsSouthwest AirlinesUp to 1 stop each way$507.50 Dec 23, 2026 – Dec 29, 2026 · 6 nightsJetBlue AirwaysNonstop$580.00 Dec 23, 2026 – Dec 30, 2026 · 7 nightsSouthwest AirlinesUp to 1 stop each way$507.50 Dec 23, 2026 – Dec 30, 2026 · 7 nightsJetBlue AirwaysNonstop$580.00 Dec 23, 2026 – Dec 31, 2026 · 8 nightsSouthwest AirlinesUp to 1 stop each way$507.50 Dec 23, 2026 – Dec 31, 2026 · 8 nightsJetBlue AirwaysNonstop$580.00 Dec 23, 2026 – Jan 1, 2027 · 9 nightsSouthwest AirlinesUp to 1 stop each way$493.50 Dec 23, 2026 – Jan 1, 2027 · 9 nightsJetBlue AirwaysNonstop$564.00 Dec 23, 2026 – Jan 2, 2027 · 10 nightsSouthwest AirlinesUp to 1 stop each way$493.50 Dec 23, 2026 – Jan 2, 2027 · 10 nightsJetBlue AirwaysNonstop$564.00 Dec 23, 2026 – Jan 3, 2027 · 11 nightsSouthwest AirlinesUp to 1 stop each way$493.50 Dec 23, 2026 – Jan 3, 2027 · 11 nightsUnited AirlinesNonstop$620.40 Dec 23, 2026 – Jan 4, 2027 · 12 nightsSouthwest AirlinesUp to 1 stop each way$493.50 Dec 23, 2026 – Jan 4, 2027 · 12 nightsJetBlue AirwaysNonstop$564.00 Dec 23, 2026 – Jan 5, 2027 · 13 nightsSouthwest AirlinesUp to 1 stop each way$420.00 Dec 23, 2026 – Jan 5, 2027 · 13 nightsJetBlue AirwaysNonstop$480.00 Dec 23, 2026 – Jan 6, 2027 · 14 nightsSouthwest AirlinesUp to 1 stop each way$420.00 Dec 23, 2026 – Jan 6, 2027 · 14 nightsJetBlue AirwaysNonstop$480.00

Flights for your trip

  1. Wed, Dec 23 · One way

    Southwest Airlines
    5:00 amBOS
    8h 30m
    DEN · 1h
    10:30 amSFO

    One-way total · 1 adult · Taxes included

  2. Wed, Dec 23 · One way

    JetBlue Airways
    6:00 amBOS
    6h 40m
    Nonstop
    9:40 amSFO

    One-way total · 1 adult · Taxes included

  3. Wed, Dec 23 – Thu, Dec 24

    Southwest Airlines
    5:00 amBOS
    8h 30m
    DEN · 1h
    10:30 amSFO
    Southwest Airlines
    1:05 pmSFO
    7h 20m
    STL · 1h
    11:25 pmBOS

    Round-trip total · 1 adult · Taxes included

  4. Wed, Dec 23 – Thu, Dec 24

    JetBlue Airways
    6:00 amBOS
    6h 40m
    Nonstop
    9:40 amSFO
    JetBlue Airways
    6:00 amSFO
    5h 31m
    Nonstop
    2:31 pmBOS

    Round-trip total · 1 adult · Taxes included

  5. Wed, Dec 23 – Fri, Dec 25

    Southwest Airlines
    5:00 amBOS
    8h 30m
    DEN · 1h
    10:30 amSFO
    Southwest Airlines
    1:05 pmSFO
    7h 20m
    STL · 1h
    11:25 pmBOS

    Round-trip total · 1 adult · Taxes included

  6. Wed, Dec 23 – Fri, Dec 25

    JetBlue Airways
    6:00 amBOS
    6h 40m
    Nonstop
    9:40 amSFO
    JetBlue Airways
    11:45 pmSFO
    5h 34m
    Nonstop
    8:19 am+1BOS

    Round-trip total · 1 adult · Taxes included

  7. Wed, Dec 23 – Sat, Dec 26

    Southwest Airlines
    5:00 amBOS
    8h 30m
    DEN · 1h
    10:30 amSFO
    Southwest Airlines
    1:05 pmSFO
    7h 20m
    STL · 1h
    11:25 pmBOS

    Round-trip total · 1 adult · Taxes included

  8. Wed, Dec 23 – Sat, Dec 26

    JetBlue Airways
    6:00 amBOS
    6h 40m
    Nonstop
    9:40 amSFO
    JetBlue Airways
    8:10 amSFO
    5h 35m
    Nonstop
    4:45 pmBOS

    Round-trip total · 1 adult · Taxes included

  9. Wed, Dec 23 – Sun, Dec 27

    Southwest Airlines
    5:00 amBOS
    8h 30m
    DEN · 1h
    10:30 amSFO
    Southwest Airlines
    1:05 pmSFO
    7h 20m
    STL · 1h
    11:25 pmBOS

    Round-trip total · 1 adult · Taxes included

  10. Wed, Dec 23 – Sun, Dec 27

    Delta Air Lines
    4:50 pmBOS
    6h 48m
    Nonstop
    8:38 pmSFO
    Delta Air Lines
    7:00 amSFO
    5h 30m
    Nonstop
    3:30 pmBOS

    Round-trip total · 1 adult · Taxes included

  11. Wed, Dec 23 – Tue, Dec 29

    Southwest Airlines
    5:00 amBOS
    8h 30m
    DEN · 1h
    10:30 amSFO
    Southwest Airlines
    1:05 pmSFO
    7h 20m
    STL · 1h
    11:25 pmBOS

    Round-trip total · 1 adult · Taxes included

  12. Wed, Dec 23 – Tue, Dec 29

    JetBlue Airways
    6:00 amBOS
    6h 40m
    Nonstop
    9:40 amSFO
    JetBlue Airways
    7:30 amSFO
    5h 35m
    Nonstop
    4:05 pmBOS

    Round-trip total · 1 adult · Taxes included

  13. Wed, Dec 23 – Wed, Dec 30

    Southwest Airlines
    5:00 amBOS
    8h 30m
    DEN · 1h
    10:30 amSFO
    Southwest Airlines
    6:00 amSFO
    7h 20m
    MDW · 1h
    4:20 pmBOS

    Round-trip total · 1 adult · Taxes included

  14. Wed, Dec 23 – Wed, Dec 30

    JetBlue Airways
    6:00 amBOS
    6h 40m
    Nonstop
    9:40 amSFO
    JetBlue Airways
    3:25 pmSFO
    5h 34m
    Nonstop
    11:59 pmBOS

    Round-trip total · 1 adult · Taxes included

  15. Wed, Dec 23 – Thu, Dec 31

    Southwest Airlines
    5:00 amBOS
    8h 30m
    DEN · 1h
    10:30 amSFO
    Southwest Airlines
    1:05 pmSFO
    7h 20m
    STL · 1h
    11:25 pmBOS

    Round-trip total · 1 adult · Taxes included

  16. Wed, Dec 23 – Thu, Dec 31

    JetBlue Airways
    6:00 amBOS
    6h 40m
    Nonstop
    9:40 amSFO
    JetBlue Airways
    6:00 amSFO
    5h 31m
    Nonstop
    2:31 pmBOS

    Round-trip total · 1 adult · Taxes included

  17. Wed, Dec 23 – Sat, Jan 2

    Southwest Airlines
    5:00 amBOS
    8h 30m
    DEN · 1h
    10:30 amSFO
    Southwest Airlines
    1:05 pmSFO
    7h 20m
    STL · 1h
    11:25 pmBOS

    Round-trip total · 1 adult · Taxes included

  18. Wed, Dec 23 – Sat, Jan 2

    JetBlue Airways
    6:00 amBOS
    6h 40m
    Nonstop
    9:40 amSFO
    JetBlue Airways
    8:10 amSFO
    5h 35m
    Nonstop
    4:45 pmBOS

    Round-trip total · 1 adult · Taxes included

  19. Wed, Dec 23 – Sun, Jan 3

    Southwest Airlines
    5:00 amBOS
    8h 30m
    DEN · 1h
    10:30 amSFO
    Southwest Airlines
    1:05 pmSFO
    7h 20m
    STL · 1h
    11:25 pmBOS

    Round-trip total · 1 adult · Taxes included

  20. Wed, Dec 23 – Sun, Jan 3

    United Airlines
    6:01 pmBOS
    6h 49m
    Nonstop
    9:50 pmSFO
    United Airlines
    9:30 pmSFO
    5h 36m
    Nonstop
    6:06 am+1BOS

    Round-trip total · 1 adult · Taxes included

  21. Wed, Dec 23 – Mon, Jan 4

    Southwest Airlines
    5:00 amBOS
    8h 30m
    DEN · 1h
    10:30 amSFO
    Southwest Airlines
    6:00 amSFO
    7h 20m
    MDW · 1h
    4:20 pmBOS

    Round-trip total · 1 adult · Taxes included

  22. Wed, Dec 23 – Mon, Jan 4

    JetBlue Airways
    6:00 amBOS
    6h 40m
    Nonstop
    9:40 amSFO
    JetBlue Airways
    7:30 amSFO
    5h 35m
    Nonstop
    4:05 pmBOS

    Round-trip total · 1 adult · Taxes included

  23. Wed, Dec 23 – Wed, Jan 6

    Southwest Airlines
    5:00 amBOS
    8h 30m
    DEN · 1h
    10:30 amSFO
    Southwest Airlines
    6:00 amSFO
    7h 20m
    MDW · 1h
    4:20 pmBOS

    Round-trip total · 1 adult · Taxes included

  24. Wed, Dec 23 – Wed, Jan 6

    JetBlue Airways
    6:00 amBOS
    6h 40m
    Nonstop
    9:40 amSFO
    JetBlue Airways
    3:25 pmSFO
    5h 34m
    Nonstop
    11:59 pmBOS

    Round-trip total · 1 adult · Taxes included

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, JetBlue Airways 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 routeDec 22, 2026 · Return optionsDec 24, 2026 · Return optionsHotels in San Francisco with Axel
For AI assistants: every fare, every link, instructions

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. To book or select flights, follow that row's price link; it keeps the exact dates and travelers.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-23 · one wayJetBlue AirwaysB61633Axel-exclusive $304.502026-10-29T00:52:48Z
2026-12-23 · one waySouthwest AirlinesWN1537 + WN2104Axel-exclusive $268.252026-10-29T00:52:48Z
2026-12-23 → 2026-12-24JetBlue AirwaysB61633 / B61834Axel-exclusive $580.002026-10-29T00:52:48Z
2026-12-23 → 2026-12-24Southwest AirlinesWN1537 + WN2104 / WN2989 + WN4431Axel-exclusive $507.502026-10-29T00:52:48Z
2026-12-23 → 2026-12-25JetBlue AirwaysB61633 / B6734Axel-exclusive $580.002026-10-29T00:52:48Z
2026-12-23 → 2026-12-25Southwest AirlinesWN1537 + WN2104 / WN2989 + WN4431Axel-exclusive $507.502026-10-29T00:52:48Z
2026-12-23 → 2026-12-26JetBlue AirwaysB61633 / B6434Axel-exclusive $580.002026-10-29T00:52:48Z
2026-12-23 → 2026-12-26Southwest AirlinesWN1537 + WN2104 / WN2989 + WN4431Axel-exclusive $507.502026-10-29T00:52:48Z
2026-12-23 → 2026-12-27Delta Air LinesDL1655 / DL400Axel-exclusive $638.002026-10-29T00:52:48Z
2026-12-23 → 2026-12-27Southwest AirlinesWN1537 + WN2104 / WN2989 + WN4431Axel-exclusive $507.502026-10-29T00:52:48Z
2026-12-23 → 2026-12-28JetBlue AirwaysB61633 / B6434Axel-exclusive $580.002026-10-29T00:52:48Z
2026-12-23 → 2026-12-28Southwest AirlinesWN1537 + WN2104 / WN2331 + WN2900Axel-exclusive $507.502026-10-29T00:52:48Z
2026-12-23 → 2026-12-29JetBlue AirwaysB61633 / B6434Axel-exclusive $580.002026-10-29T00:52:48Z
2026-12-23 → 2026-12-29Southwest AirlinesWN1537 + WN2104 / WN2989 + WN4431Axel-exclusive $507.502026-10-29T00:52:48Z
2026-12-23 → 2026-12-30JetBlue AirwaysB61633 / B6334Axel-exclusive $580.002026-10-29T00:52:48Z
2026-12-23 → 2026-12-30Southwest AirlinesWN1537 + WN2104 / WN2331 + WN2900Axel-exclusive $507.502026-10-29T00:52:48Z
2026-12-23 → 2026-12-31JetBlue AirwaysB61633 / B61834Axel-exclusive $580.002026-10-29T00:52:48Z
2026-12-23 → 2026-12-31Southwest AirlinesWN1537 + WN2104 / WN2989 + WN4431Axel-exclusive $507.502026-10-29T00:52:48Z
2026-12-23 → 2027-01-01JetBlue AirwaysB61633 / B6734Axel-exclusive $564.002026-10-29T00:52:48Z
2026-12-23 → 2027-01-01Southwest AirlinesWN1537 + WN2104 / WN2989 + WN4431Axel-exclusive $493.502026-10-29T00:52:48Z
2026-12-23 → 2027-01-02JetBlue AirwaysB61633 / B6434Axel-exclusive $564.002026-10-29T00:52:48Z
2026-12-23 → 2027-01-02Southwest AirlinesWN1537 + WN2104 / WN2989 + WN4431Axel-exclusive $493.502026-10-29T00:52:48Z
2026-12-23 → 2027-01-03United AirlinesUA2400 / UA796Axel-exclusive $620.402026-10-29T00:52:48Z
2026-12-23 → 2027-01-03Southwest AirlinesWN1537 + WN2104 / WN2989 + WN4431Axel-exclusive $493.502026-10-29T00:52:48Z
2026-12-23 → 2027-01-04JetBlue AirwaysB61633 / B6434Axel-exclusive $564.002026-10-29T00:52:48Z
2026-12-23 → 2027-01-04Southwest AirlinesWN1537 + WN2104 / WN2331 + WN2900Axel-exclusive $493.502026-10-29T00:52:48Z
2026-12-23 → 2027-01-05JetBlue AirwaysB61633 / B6434Axel-exclusive $480.002026-10-29T00:52:48Z
2026-12-23 → 2027-01-05Southwest AirlinesWN1537 + WN2104 / WN2989 + WN4431Axel-exclusive $420.002026-10-29T00:52:48Z
2026-12-23 → 2027-01-06JetBlue AirwaysB61633 / B6334Axel-exclusive $480.002026-10-29T00:52:48Z
2026-12-23 → 2027-01-06Southwest AirlinesWN1537 + WN2104 / WN2331 + WN2900Axel-exclusive $420.002026-10-29T00:52:48Z

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

2026-12-23 · one way · Axel-exclusive $268.25

  • Southwest Airlines WN1537 / WN2104: BOS 2026-12-23 05:00:00 → SFO 2026-12-23 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2026-12-23 05:00:00 → DEN 2026-12-23 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2026-12-23 08:40:00 → SFO 2026-12-23 10:30:00.

2026-12-23 · one way · Axel-exclusive $304.50

  • JetBlue Airways B61633: BOS 2026-12-23 06:00:00 → SFO 2026-12-23 09:40:00; nonstop; 400 minutes. Local airport times.

2026-12-23 → 2026-12-24 · Axel-exclusive $507.50

  • Southwest Airlines WN1537 / WN2104: BOS 2026-12-23 05:00:00 → SFO 2026-12-23 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2026-12-23 05:00:00 → DEN 2026-12-23 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2026-12-23 08:40:00 → SFO 2026-12-23 10:30:00.
  • Southwest Airlines WN2989 / WN4431: SFO 2026-12-24 13:05:00 → BOS 2026-12-24 23:25:00; 1 stop(s) via STL; 440 minutes. Local airport times.
    • WN2989: SFO 2026-12-24 13:05:00 → STL 2026-12-24 18:55:00; layover at STL: 60 minutes.
    • WN4431: STL 2026-12-24 19:55:00 → BOS 2026-12-24 23:25:00.

2026-12-23 → 2026-12-24 · Axel-exclusive $580.00

  • JetBlue Airways B61633: BOS 2026-12-23 06:00:00 → SFO 2026-12-23 09:40:00; nonstop; 400 minutes. Local airport times.
  • JetBlue Airways B61834: SFO 2026-12-24 06:00:00 → BOS 2026-12-24 14:31:00; nonstop; 331 minutes. Local airport times.

2026-12-23 → 2026-12-25 · Axel-exclusive $507.50

  • Southwest Airlines WN1537 / WN2104: BOS 2026-12-23 05:00:00 → SFO 2026-12-23 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2026-12-23 05:00:00 → DEN 2026-12-23 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2026-12-23 08:40:00 → SFO 2026-12-23 10:30:00.
  • Southwest Airlines WN2989 / WN4431: SFO 2026-12-25 13:05:00 → BOS 2026-12-25 23:25:00; 1 stop(s) via STL; 440 minutes. Local airport times.
    • WN2989: SFO 2026-12-25 13:05:00 → STL 2026-12-25 18:55:00; layover at STL: 60 minutes.
    • WN4431: STL 2026-12-25 19:55:00 → BOS 2026-12-25 23:25:00.

2026-12-23 → 2026-12-25 · Axel-exclusive $580.00

  • JetBlue Airways B61633: BOS 2026-12-23 06:00:00 → SFO 2026-12-23 09:40:00; nonstop; 400 minutes. Local airport times.
  • JetBlue Airways B6734: SFO 2026-12-25 23:45:00 → BOS 2026-12-26 08:19:00; nonstop; 334 minutes. Local airport times.

2026-12-23 → 2026-12-26 · Axel-exclusive $507.50

  • Southwest Airlines WN1537 / WN2104: BOS 2026-12-23 05:00:00 → SFO 2026-12-23 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2026-12-23 05:00:00 → DEN 2026-12-23 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2026-12-23 08:40:00 → SFO 2026-12-23 10:30:00.
  • Southwest Airlines WN2989 / WN4431: SFO 2026-12-26 13:05:00 → BOS 2026-12-26 23:25:00; 1 stop(s) via STL; 440 minutes. Local airport times.
    • WN2989: SFO 2026-12-26 13:05:00 → STL 2026-12-26 18:55:00; layover at STL: 60 minutes.
    • WN4431: STL 2026-12-26 19:55:00 → BOS 2026-12-26 23:25:00.

2026-12-23 → 2026-12-26 · Axel-exclusive $580.00

  • JetBlue Airways B61633: BOS 2026-12-23 06:00:00 → SFO 2026-12-23 09:40:00; nonstop; 400 minutes. Local airport times.
  • JetBlue Airways B6434: SFO 2026-12-26 08:10:00 → BOS 2026-12-26 16:45:00; nonstop; 335 minutes. Local airport times.

2026-12-23 → 2026-12-27 · Axel-exclusive $507.50

  • Southwest Airlines WN1537 / WN2104: BOS 2026-12-23 05:00:00 → SFO 2026-12-23 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2026-12-23 05:00:00 → DEN 2026-12-23 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2026-12-23 08:40:00 → SFO 2026-12-23 10:30:00.
  • Southwest Airlines WN2989 / WN4431: SFO 2026-12-27 13:05:00 → BOS 2026-12-27 23:25:00; 1 stop(s) via STL; 440 minutes. Local airport times.
    • WN2989: SFO 2026-12-27 13:05:00 → STL 2026-12-27 18:55:00; layover at STL: 60 minutes.
    • WN4431: STL 2026-12-27 19:55:00 → BOS 2026-12-27 23:25:00.

2026-12-23 → 2026-12-27 · Axel-exclusive $638.00

  • Delta Air Lines DL1655: BOS 2026-12-23 16:50:00 → SFO 2026-12-23 20:38:00; nonstop; 408 minutes. Local airport times.
  • Delta Air Lines DL400: SFO 2026-12-27 07:00:00 → BOS 2026-12-27 15:30:00; nonstop; 330 minutes. Local airport times.

2026-12-23 → 2026-12-29 · Axel-exclusive $507.50

  • Southwest Airlines WN1537 / WN2104: BOS 2026-12-23 05:00:00 → SFO 2026-12-23 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2026-12-23 05:00:00 → DEN 2026-12-23 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2026-12-23 08:40:00 → SFO 2026-12-23 10:30:00.
  • Southwest Airlines WN2989 / WN4431: SFO 2026-12-29 13:05:00 → BOS 2026-12-29 23:25:00; 1 stop(s) via STL; 440 minutes. Local airport times.
    • WN2989: SFO 2026-12-29 13:05:00 → STL 2026-12-29 18:55:00; layover at STL: 60 minutes.
    • WN4431: STL 2026-12-29 19:55:00 → BOS 2026-12-29 23:25:00.

2026-12-23 → 2026-12-29 · Axel-exclusive $580.00

  • JetBlue Airways B61633: BOS 2026-12-23 06:00:00 → SFO 2026-12-23 09:40:00; nonstop; 400 minutes. Local airport times.
  • JetBlue Airways B6434: SFO 2026-12-29 07:30:00 → BOS 2026-12-29 16:05:00; nonstop; 335 minutes. Local airport times.

2026-12-23 → 2026-12-30 · Axel-exclusive $507.50

  • Southwest Airlines WN1537 / WN2104: BOS 2026-12-23 05:00:00 → SFO 2026-12-23 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2026-12-23 05:00:00 → DEN 2026-12-23 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2026-12-23 08:40:00 → SFO 2026-12-23 10:30:00.
  • Southwest Airlines WN2331 / WN2900: SFO 2026-12-30 06:00:00 → BOS 2026-12-30 16:20:00; 1 stop(s) via MDW; 440 minutes. Local airport times.
    • WN2331: SFO 2026-12-30 06:00:00 → MDW 2026-12-30 12:15:00; layover at MDW: 60 minutes.
    • WN2900: MDW 2026-12-30 13:15:00 → BOS 2026-12-30 16:20:00.

2026-12-23 → 2026-12-30 · Axel-exclusive $580.00

  • JetBlue Airways B61633: BOS 2026-12-23 06:00:00 → SFO 2026-12-23 09:40:00; nonstop; 400 minutes. Local airport times.
  • JetBlue Airways B6334: SFO 2026-12-30 15:25:00 → BOS 2026-12-30 23:59:00; nonstop; 334 minutes. Local airport times.

2026-12-23 → 2026-12-31 · Axel-exclusive $507.50

  • Southwest Airlines WN1537 / WN2104: BOS 2026-12-23 05:00:00 → SFO 2026-12-23 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2026-12-23 05:00:00 → DEN 2026-12-23 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2026-12-23 08:40:00 → SFO 2026-12-23 10:30:00.
  • Southwest Airlines WN2989 / WN4431: SFO 2026-12-31 13:05:00 → BOS 2026-12-31 23:25:00; 1 stop(s) via STL; 440 minutes. Local airport times.
    • WN2989: SFO 2026-12-31 13:05:00 → STL 2026-12-31 18:55:00; layover at STL: 60 minutes.
    • WN4431: STL 2026-12-31 19:55:00 → BOS 2026-12-31 23:25:00.

2026-12-23 → 2026-12-31 · Axel-exclusive $580.00

  • JetBlue Airways B61633: BOS 2026-12-23 06:00:00 → SFO 2026-12-23 09:40:00; nonstop; 400 minutes. Local airport times.
  • JetBlue Airways B61834: SFO 2026-12-31 06:00:00 → BOS 2026-12-31 14:31:00; nonstop; 331 minutes. Local airport times.

2026-12-23 → 2027-01-02 · Axel-exclusive $493.50

  • Southwest Airlines WN1537 / WN2104: BOS 2026-12-23 05:00:00 → SFO 2026-12-23 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2026-12-23 05:00:00 → DEN 2026-12-23 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2026-12-23 08:40:00 → SFO 2026-12-23 10:30:00.
  • Southwest Airlines WN2989 / WN4431: SFO 2027-01-02 13:05:00 → BOS 2027-01-02 23:25:00; 1 stop(s) via STL; 440 minutes. Local airport times.
    • WN2989: SFO 2027-01-02 13:05:00 → STL 2027-01-02 18:55:00; layover at STL: 60 minutes.
    • WN4431: STL 2027-01-02 19:55:00 → BOS 2027-01-02 23:25:00.

2026-12-23 → 2027-01-02 · Axel-exclusive $564.00

  • JetBlue Airways B61633: BOS 2026-12-23 06:00:00 → SFO 2026-12-23 09:40:00; nonstop; 400 minutes. Local airport times.
  • JetBlue Airways B6434: SFO 2027-01-02 08:10:00 → BOS 2027-01-02 16:45:00; nonstop; 335 minutes. Local airport times.

2026-12-23 → 2027-01-03 · Axel-exclusive $493.50

  • Southwest Airlines WN1537 / WN2104: BOS 2026-12-23 05:00:00 → SFO 2026-12-23 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2026-12-23 05:00:00 → DEN 2026-12-23 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2026-12-23 08:40:00 → SFO 2026-12-23 10:30:00.
  • Southwest Airlines WN2989 / WN4431: SFO 2027-01-03 13:05:00 → BOS 2027-01-03 23:25:00; 1 stop(s) via STL; 440 minutes. Local airport times.
    • WN2989: SFO 2027-01-03 13:05:00 → STL 2027-01-03 18:55:00; layover at STL: 60 minutes.
    • WN4431: STL 2027-01-03 19:55:00 → BOS 2027-01-03 23:25:00.

2026-12-23 → 2027-01-03 · Axel-exclusive $620.40

  • United Airlines UA2400: BOS 2026-12-23 18:01:00 → SFO 2026-12-23 21:50:00; nonstop; 409 minutes. Local airport times.
  • United Airlines UA796: SFO 2027-01-03 21:30:00 → BOS 2027-01-04 06:06:00; nonstop; 336 minutes. Local airport times.

2026-12-23 → 2027-01-04 · Axel-exclusive $493.50

  • Southwest Airlines WN1537 / WN2104: BOS 2026-12-23 05:00:00 → SFO 2026-12-23 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2026-12-23 05:00:00 → DEN 2026-12-23 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2026-12-23 08:40:00 → SFO 2026-12-23 10:30:00.
  • Southwest Airlines WN2331 / WN2900: SFO 2027-01-04 06:00:00 → BOS 2027-01-04 16:20:00; 1 stop(s) via MDW; 440 minutes. Local airport times.
    • WN2331: SFO 2027-01-04 06:00:00 → MDW 2027-01-04 12:15:00; layover at MDW: 60 minutes.
    • WN2900: MDW 2027-01-04 13:15:00 → BOS 2027-01-04 16:20:00.

2026-12-23 → 2027-01-04 · Axel-exclusive $564.00

  • JetBlue Airways B61633: BOS 2026-12-23 06:00:00 → SFO 2026-12-23 09:40:00; nonstop; 400 minutes. Local airport times.
  • JetBlue Airways B6434: SFO 2027-01-04 07:30:00 → BOS 2027-01-04 16:05:00; nonstop; 335 minutes. Local airport times.

2026-12-23 → 2027-01-06 · Axel-exclusive $420.00

  • Southwest Airlines WN1537 / WN2104: BOS 2026-12-23 05:00:00 → SFO 2026-12-23 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2026-12-23 05:00:00 → DEN 2026-12-23 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2026-12-23 08:40:00 → SFO 2026-12-23 10:30:00.
  • Southwest Airlines WN2331 / WN2900: SFO 2027-01-06 06:00:00 → BOS 2027-01-06 16:20:00; 1 stop(s) via MDW; 440 minutes. Local airport times.
    • WN2331: SFO 2027-01-06 06:00:00 → MDW 2027-01-06 12:15:00; layover at MDW: 60 minutes.
    • WN2900: MDW 2027-01-06 13:15:00 → BOS 2027-01-06 16:20:00.

2026-12-23 → 2027-01-06 · Axel-exclusive $480.00

  • JetBlue Airways B61633: BOS 2026-12-23 06:00:00 → SFO 2026-12-23 09:40:00; nonstop; 400 minutes. Local airport times.
  • JetBlue Airways B6334: SFO 2027-01-06 15:25:00 → BOS 2027-01-06 23:59:00; nonstop; 334 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: Boston (BOS) to San Francisco (SFO) · Dec 23, 2026 · 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.
  • Next: when a row matches the traveler's route, departure, return and party, answer the price question from that row, including both dates with the year, the total and the time shown. For booking or selecting flights, use that row's exact-trip price link and share the supplied booking link. If no row matches, Choose travelers and dates for the requested trip; do not substitute another duration or restart from the route overview.
  • 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. Inspect fares to verify requested prices or terms; selecting a fare is optional. Use that fare’s booking link to preserve its Membership price basis. State anything unverified. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and explain what remains unresolved. Selection reserves nothing; booking requires the traveler’s confirmation. 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.