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

Boston (BOS) to San Francisco (SFO), Mar 21, 2027: round trips from $438, one way from $229

Boston (BOS) to San Francisco (SFO), Mar 21, 2027: round trips from $438, one way from $229 on Axel, checked Oct 29, 2026. Lowest published fares: $438 round trip, Axel-exclusive, Southwest Airlines, 1 stop, Mar 21–22, 2027; $229 one way, Axel-exclusive, Southwest Airlines, 1 stop, Mar 21, 2027; 1 adult, economy, checked Oct 29, 2026.

BOS → SFO1 adulteconomyBasic economy excludedOne 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 excluded.

March 2027

Flights for your trip

  1. Sun, Mar 21 · One way

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

    One-way total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  2. Sun, Mar 21 · One way

    JetBlue Airways
    8:50 pmBOS
    6h 47m
    Nonstop
    12:37 am+1SFO

    One-way total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  3. Sun, Mar 21 – Mon, Mar 22

    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

    Availability is checked when you select these flights.

  4. Sun, Mar 21 – Mon, Mar 22

    JetBlue Airways
    8:50 pmBOS
    6h 47m
    Nonstop
    12:37 am+1SFO
    JetBlue Airways
    7:30 amSFO
    5h 35m
    Nonstop
    4:05 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  5. Sun, Mar 21 – Tue, Mar 23

    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

    Availability is checked when you select these flights.

  6. Sun, Mar 21 – Tue, Mar 23

    JetBlue Airways
    8:50 pmBOS
    6h 47m
    Nonstop
    12:37 am+1SFO
    JetBlue Airways
    11:30 amSFO
    5h 37m
    Nonstop
    8:07 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  7. Sun, Mar 21 – Wed, Mar 24

    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

    Availability is checked when you select these flights.

  8. Sun, Mar 21 – Wed, Mar 24

    JetBlue Airways
    8:50 pmBOS
    6h 47m
    Nonstop
    12:37 am+1SFO
    JetBlue Airways
    3:25 pmSFO
    5h 34m
    Nonstop
    11:59 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  9. Sun, Mar 21 – Thu, Mar 25

    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

    Availability is checked when you select these flights.

  10. Sun, Mar 21 – Thu, Mar 25

    JetBlue Airways
    8:50 pmBOS
    6h 47m
    Nonstop
    12:37 am+1SFO
    JetBlue Airways
    6:00 amSFO
    5h 31m
    Nonstop
    2:31 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  11. Sun, Mar 21 – Sat, Mar 27

    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

    Availability is checked when you select these flights.

  12. Sun, Mar 21 – Sat, Mar 27

    JetBlue Airways
    8:50 pmBOS
    6h 47m
    Nonstop
    12:37 am+1SFO
    JetBlue Airways
    8:10 amSFO
    5h 35m
    Nonstop
    4:45 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  13. Sun, Mar 21 – Sun, Mar 28

    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

    Availability is checked when you select these flights.

  14. Sun, Mar 21 – Sun, Mar 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.

  15. Sun, Mar 21 – Mon, Mar 29

    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

    Availability is checked when you select these flights.

  16. Sun, Mar 21 – Mon, Mar 29

    JetBlue Airways
    8:50 pmBOS
    6h 47m
    Nonstop
    12:37 am+1SFO
    JetBlue Airways
    7:30 amSFO
    5h 35m
    Nonstop
    4:05 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  17. Sun, Mar 21 – Wed, Mar 31

    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

    Availability is checked when you select these flights.

  18. Sun, Mar 21 – Wed, Mar 31

    JetBlue Airways
    8:50 pmBOS
    6h 47m
    Nonstop
    12:37 am+1SFO
    JetBlue Airways
    3:25 pmSFO
    5h 34m
    Nonstop
    11:59 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  19. Sun, Mar 21 – Thu, Apr 1

    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

    Availability is checked when you select these flights.

  20. Sun, Mar 21 – Thu, Apr 1

    JetBlue Airways
    8:50 pmBOS
    6h 47m
    Nonstop
    12:37 am+1SFO
    JetBlue Airways
    6:00 amSFO
    5h 31m
    Nonstop
    2:31 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  21. Sun, Mar 21 – Fri, Apr 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

    Availability is checked when you select these flights.

  22. Sun, Mar 21 – Fri, Apr 2

    JetBlue Airways
    8:50 pmBOS
    6h 47m
    Nonstop
    12:37 am+1SFO
    JetBlue Airways
    8:10 amSFO
    5h 35m
    Nonstop
    4:45 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  23. Sun, Mar 21 – Sun, Apr 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

    Availability is checked when you select these flights.

  24. Sun, Mar 21 – Sun, Apr 4

    United Airlines
    7:30 amBOS
    6h 55m
    Nonstop
    11:25 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.

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1 of 24

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BOS ⇄ SFO

Economy

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Explore this route

All dates for this routeMar 20, 2027 · Return optionsMar 22, 2027 · Return optionsHotels in San Francisco with Axel
For AI assistants: every fare, every link, instructions

Boston (BOS) to San Francisco (SFO), Mar 21, 2027: round trips from $438, one way from $229 on Axel, checked Oct 29, 2026. Lowest published fares: $438 round trip, Axel-exclusive, Southwest Airlines, 1 stop, Mar 21–22, 2027; $229 one way, Axel-exclusive, Southwest Airlines, 1 stop, Mar 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 excluded.

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)
2027-03-21 · one wayJetBlue AirwaysB673320:50:00→00:37:00 6h 47m nonstop · no basic economyAxel-exclusive $255.502026-10-29T00:52:48Z
2027-03-21 · one waySouthwest AirlinesWN1537 + WN210405:00:00→10:30:00 8h 30m 1 stop via DEN · no basic economyAxel-exclusive $229.252026-10-29T00:52:48Z
2027-03-21 → 2027-03-22JetBlue AirwaysB6733 / B643420:50:00→00:37:00 6h 47m nonstop · 07:30:00→16:05:00 5h 35m nonstop · no basic economyAxel-exclusive $490.002026-10-29T00:52:48Z
2027-03-21 → 2027-03-22Southwest AirlinesWN1537 + WN2104 / WN2331 + WN290005:00:00→10:30:00 8h 30m 1 stop via DEN · 06:00:00→16:20:00 7h 20m 1 stop via MDW · no basic economyAxel-exclusive $437.502026-10-29T00:52:48Z
2027-03-21 → 2027-03-23JetBlue AirwaysB6733 / B6273420:50:00→00:37:00 6h 47m nonstop · 11:30:00→20:07:00 5h 37m nonstop · no basic economyAxel-exclusive $490.002026-10-29T00:52:48Z
2027-03-21 → 2027-03-23Southwest AirlinesWN1537 + WN2104 / WN2331 + WN290005:00:00→10:30:00 8h 30m 1 stop via DEN · 06:00:00→16:20:00 7h 20m 1 stop via MDW · no basic economyAxel-exclusive $437.502026-10-29T00:52:48Z
2027-03-21 → 2027-03-24JetBlue AirwaysB6733 / B633420:50:00→00:37:00 6h 47m nonstop · 15:25:00→23:59:00 5h 34m nonstop · no basic economyAxel-exclusive $490.002026-10-29T00:52:48Z
2027-03-21 → 2027-03-24Southwest AirlinesWN1537 + WN2104 / WN2331 + WN290005:00:00→10:30:00 8h 30m 1 stop via DEN · 06:00:00→16:20:00 7h 20m 1 stop via MDW · no basic economyAxel-exclusive $437.502026-10-29T00:52:48Z
2027-03-21 → 2027-03-25JetBlue AirwaysB6733 / B6183420:50:00→00:37:00 6h 47m nonstop · 06:00:00→14:31:00 5h 31m nonstop · no basic economyAxel-exclusive $490.002026-10-29T00:52:48Z
2027-03-21 → 2027-03-25Southwest AirlinesWN1537 + WN2104 / WN2331 + WN290005:00:00→10:30:00 8h 30m 1 stop via DEN · 06:00:00→16:20:00 7h 20m 1 stop via MDW · no basic economyAxel-exclusive $437.502026-10-29T00:52:48Z
2027-03-21 → 2027-03-26JetBlue AirwaysB6733 / B643420:50:00→00:37:00 6h 47m nonstop · 08:10:00→16:45:00 5h 35m nonstop · no basic economyAxel-exclusive $490.002026-10-29T00:52:48Z
2027-03-21 → 2027-03-26Southwest AirlinesWN1537 + WN2104 / WN2989 + WN443105:00:00→10:30:00 8h 30m 1 stop via DEN · 13:05:00→23:25:00 7h 20m 1 stop via STL · no basic economyAxel-exclusive $437.502026-10-29T00:52:48Z
2027-03-21 → 2027-03-27JetBlue AirwaysB6733 / B643420:50:00→00:37:00 6h 47m nonstop · 08:10:00→16:45:00 5h 35m nonstop · no basic economyAxel-exclusive $490.002026-10-29T00:52:48Z
2027-03-21 → 2027-03-27Southwest AirlinesWN1537 + WN2104 / WN2331 + WN290005:00:00→10:30:00 8h 30m 1 stop via DEN · 06:00:00→16:20:00 7h 20m 1 stop via MDW · no basic economyAxel-exclusive $437.502026-10-29T00:52:48Z
2027-03-21 → 2027-03-28Delta Air LinesDL2919 / DL40020:46:00→00:41:00 6h 55m nonstop · 07:00:00→15:30:00 5h 30m nonstop · no basic economyAxel-exclusive $615.002026-10-29T00:52:48Z
2027-03-21 → 2027-03-28Southwest AirlinesWN1537 + WN2104 / WN2331 + WN290005:00:00→10:30:00 8h 30m 1 stop via DEN · 06:00:00→16:20:00 7h 20m 1 stop via MDW · no basic economyAxel-exclusive $495.252026-10-29T00:52:48Z
2027-03-21 → 2027-03-29JetBlue AirwaysB6733 / B643420:50:00→00:37:00 6h 47m nonstop · 07:30:00→16:05:00 5h 35m nonstop · no basic economyAxel-exclusive $553.002026-10-29T00:52:48Z
2027-03-21 → 2027-03-29Southwest AirlinesWN1537 + WN2104 / WN2331 + WN290005:00:00→10:30:00 8h 30m 1 stop via DEN · 06:00:00→16:20:00 7h 20m 1 stop via MDW · no basic economyAxel-exclusive $495.252026-10-29T00:52:48Z
2027-03-21 → 2027-03-30JetBlue AirwaysB6733 / B6273420:50:00→00:37:00 6h 47m nonstop · 11:30:00→20:07:00 5h 37m nonstop · no basic economyAxel-exclusive $553.002026-10-29T00:52:48Z
2027-03-21 → 2027-03-30Southwest AirlinesWN1537 + WN2104 / WN2331 + WN290005:00:00→10:30:00 8h 30m 1 stop via DEN · 06:00:00→16:20:00 7h 20m 1 stop via MDW · no basic economyAxel-exclusive $495.252026-10-29T00:52:48Z
2027-03-21 → 2027-03-31JetBlue AirwaysB6733 / B633420:50:00→00:37:00 6h 47m nonstop · 15:25:00→23:59:00 5h 34m nonstop · no basic economyAxel-exclusive $553.002026-10-29T00:52:48Z
2027-03-21 → 2027-03-31Southwest AirlinesWN1537 + WN2104 / WN2331 + WN290005:00:00→10:30:00 8h 30m 1 stop via DEN · 06:00:00→16:20:00 7h 20m 1 stop via MDW · no basic economyAxel-exclusive $495.252026-10-29T00:52:48Z
2027-03-21 → 2027-04-01JetBlue AirwaysB6733 / B6183420:50:00→00:37:00 6h 47m nonstop · 06:00:00→14:31:00 5h 31m nonstop · no basic economyAxel-exclusive $540.002026-10-29T00:52:48Z
2027-03-21 → 2027-04-01Southwest AirlinesWN1537 + WN2104 / WN2331 + WN290005:00:00→10:30:00 8h 30m 1 stop via DEN · 06:00:00→16:20:00 7h 20m 1 stop via MDW · no basic economyAxel-exclusive $483.752026-10-29T00:52:48Z
2027-03-21 → 2027-04-02JetBlue AirwaysB6733 / B643420:50:00→00:37:00 6h 47m nonstop · 08:10:00→16:45:00 5h 35m nonstop · no basic economyAxel-exclusive $540.002026-10-29T00:52:48Z
2027-03-21 → 2027-04-02Southwest AirlinesWN1537 + WN2104 / WN2989 + WN443105:00:00→10:30:00 8h 30m 1 stop via DEN · 13:05:00→23:25:00 7h 20m 1 stop via STL · no basic economyAxel-exclusive $483.752026-10-29T00:52:48Z
2027-03-21 → 2027-04-03JetBlue AirwaysB6733 / B643420:50:00→00:37:00 6h 47m nonstop · 08:10:00→16:45:00 5h 35m nonstop · no basic economyAxel-exclusive $540.002026-10-29T00:52:48Z
2027-03-21 → 2027-04-03Southwest AirlinesWN1537 + WN2104 / WN2331 + WN290005:00:00→10:30:00 8h 30m 1 stop via DEN · 06:00:00→16:20:00 7h 20m 1 stop via MDW · no basic economyAxel-exclusive $483.752026-10-29T00:52:48Z
2027-03-21 → 2027-04-04United AirlinesUA1023 / UA166507:30:00→11:25:00 6h 55m nonstop · 23:20:00→08:01:00 5h 41m nonstop · no basic economyAxel-exclusive $601.002026-10-29T00:52:48Z
2027-03-21 → 2027-04-04Southwest AirlinesWN1537 + WN2104 / WN2331 + WN290005:00:00→10:30:00 8h 30m 1 stop via DEN · 06:00:00→16:20:00 7h 20m 1 stop via MDW · no basic economyAxel-exclusive $483.752026-10-29T00:52:48Z

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

2027-03-21 · one way · Axel-exclusive $229.25

  • Southwest Airlines WN1537 / WN2104: BOS 2027-03-21 05:00:00 → SFO 2027-03-21 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2027-03-21 05:00:00 → DEN 2027-03-21 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2027-03-21 08:40:00 → SFO 2027-03-21 10:30:00.

2027-03-21 · one way · Axel-exclusive $255.50

  • JetBlue Airways B6733: BOS 2027-03-21 20:50:00 → SFO 2027-03-22 00:37:00; nonstop; 407 minutes. Local airport times.

2027-03-21 → 2027-03-22 · Axel-exclusive $437.50

  • Southwest Airlines WN1537 / WN2104: BOS 2027-03-21 05:00:00 → SFO 2027-03-21 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2027-03-21 05:00:00 → DEN 2027-03-21 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2027-03-21 08:40:00 → SFO 2027-03-21 10:30:00.
  • Southwest Airlines WN2331 / WN2900: SFO 2027-03-22 06:00:00 → BOS 2027-03-22 16:20:00; 1 stop(s) via MDW; 440 minutes. Local airport times.
    • WN2331: SFO 2027-03-22 06:00:00 → MDW 2027-03-22 12:15:00; layover at MDW: 60 minutes.
    • WN2900: MDW 2027-03-22 13:15:00 → BOS 2027-03-22 16:20:00.

2027-03-21 → 2027-03-22 · Axel-exclusive $490.00

  • JetBlue Airways B6733: BOS 2027-03-21 20:50:00 → SFO 2027-03-22 00:37:00; nonstop; 407 minutes. Local airport times.
  • JetBlue Airways B6434: SFO 2027-03-22 07:30:00 → BOS 2027-03-22 16:05:00; nonstop; 335 minutes. Local airport times.

2027-03-21 → 2027-03-23 · Axel-exclusive $437.50

  • Southwest Airlines WN1537 / WN2104: BOS 2027-03-21 05:00:00 → SFO 2027-03-21 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2027-03-21 05:00:00 → DEN 2027-03-21 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2027-03-21 08:40:00 → SFO 2027-03-21 10:30:00.
  • Southwest Airlines WN2331 / WN2900: SFO 2027-03-23 06:00:00 → BOS 2027-03-23 16:20:00; 1 stop(s) via MDW; 440 minutes. Local airport times.
    • WN2331: SFO 2027-03-23 06:00:00 → MDW 2027-03-23 12:15:00; layover at MDW: 60 minutes.
    • WN2900: MDW 2027-03-23 13:15:00 → BOS 2027-03-23 16:20:00.

2027-03-21 → 2027-03-23 · Axel-exclusive $490.00

  • JetBlue Airways B6733: BOS 2027-03-21 20:50:00 → SFO 2027-03-22 00:37:00; nonstop; 407 minutes. Local airport times.
  • JetBlue Airways B62734: SFO 2027-03-23 11:30:00 → BOS 2027-03-23 20:07:00; nonstop; 337 minutes. Local airport times.

2027-03-21 → 2027-03-24 · Axel-exclusive $437.50

  • Southwest Airlines WN1537 / WN2104: BOS 2027-03-21 05:00:00 → SFO 2027-03-21 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2027-03-21 05:00:00 → DEN 2027-03-21 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2027-03-21 08:40:00 → SFO 2027-03-21 10:30:00.
  • Southwest Airlines WN2331 / WN2900: SFO 2027-03-24 06:00:00 → BOS 2027-03-24 16:20:00; 1 stop(s) via MDW; 440 minutes. Local airport times.
    • WN2331: SFO 2027-03-24 06:00:00 → MDW 2027-03-24 12:15:00; layover at MDW: 60 minutes.
    • WN2900: MDW 2027-03-24 13:15:00 → BOS 2027-03-24 16:20:00.

2027-03-21 → 2027-03-24 · Axel-exclusive $490.00

  • JetBlue Airways B6733: BOS 2027-03-21 20:50:00 → SFO 2027-03-22 00:37:00; nonstop; 407 minutes. Local airport times.
  • JetBlue Airways B6334: SFO 2027-03-24 15:25:00 → BOS 2027-03-24 23:59:00; nonstop; 334 minutes. Local airport times.

2027-03-21 → 2027-03-25 · Axel-exclusive $437.50

  • Southwest Airlines WN1537 / WN2104: BOS 2027-03-21 05:00:00 → SFO 2027-03-21 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2027-03-21 05:00:00 → DEN 2027-03-21 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2027-03-21 08:40:00 → SFO 2027-03-21 10:30:00.
  • Southwest Airlines WN2331 / WN2900: SFO 2027-03-25 06:00:00 → BOS 2027-03-25 16:20:00; 1 stop(s) via MDW; 440 minutes. Local airport times.
    • WN2331: SFO 2027-03-25 06:00:00 → MDW 2027-03-25 12:15:00; layover at MDW: 60 minutes.
    • WN2900: MDW 2027-03-25 13:15:00 → BOS 2027-03-25 16:20:00.

2027-03-21 → 2027-03-25 · Axel-exclusive $490.00

  • JetBlue Airways B6733: BOS 2027-03-21 20:50:00 → SFO 2027-03-22 00:37:00; nonstop; 407 minutes. Local airport times.
  • JetBlue Airways B61834: SFO 2027-03-25 06:00:00 → BOS 2027-03-25 14:31:00; nonstop; 331 minutes. Local airport times.

2027-03-21 → 2027-03-27 · Axel-exclusive $437.50

  • Southwest Airlines WN1537 / WN2104: BOS 2027-03-21 05:00:00 → SFO 2027-03-21 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2027-03-21 05:00:00 → DEN 2027-03-21 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2027-03-21 08:40:00 → SFO 2027-03-21 10:30:00.
  • Southwest Airlines WN2331 / WN2900: SFO 2027-03-27 06:00:00 → BOS 2027-03-27 16:20:00; 1 stop(s) via MDW; 440 minutes. Local airport times.
    • WN2331: SFO 2027-03-27 06:00:00 → MDW 2027-03-27 12:15:00; layover at MDW: 60 minutes.
    • WN2900: MDW 2027-03-27 13:15:00 → BOS 2027-03-27 16:20:00.

2027-03-21 → 2027-03-27 · Axel-exclusive $490.00

  • JetBlue Airways B6733: BOS 2027-03-21 20:50:00 → SFO 2027-03-22 00:37:00; nonstop; 407 minutes. Local airport times.
  • JetBlue Airways B6434: SFO 2027-03-27 08:10:00 → BOS 2027-03-27 16:45:00; nonstop; 335 minutes. Local airport times.

2027-03-21 → 2027-03-28 · Axel-exclusive $495.25

  • Southwest Airlines WN1537 / WN2104: BOS 2027-03-21 05:00:00 → SFO 2027-03-21 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2027-03-21 05:00:00 → DEN 2027-03-21 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2027-03-21 08:40:00 → SFO 2027-03-21 10:30:00.
  • Southwest Airlines WN2331 / WN2900: SFO 2027-03-28 06:00:00 → BOS 2027-03-28 16:20:00; 1 stop(s) via MDW; 440 minutes. Local airport times.
    • WN2331: SFO 2027-03-28 06:00:00 → MDW 2027-03-28 12:15:00; layover at MDW: 60 minutes.
    • WN2900: MDW 2027-03-28 13:15:00 → BOS 2027-03-28 16:20:00.

2027-03-21 → 2027-03-28 · Axel-exclusive $615.00

  • Delta Air Lines DL2919: BOS 2027-03-21 20:46:00 → SFO 2027-03-22 00:41:00; nonstop; 415 minutes. Local airport times.
  • Delta Air Lines DL400: SFO 2027-03-28 07:00:00 → BOS 2027-03-28 15:30:00; nonstop; 330 minutes. Local airport times.

2027-03-21 → 2027-03-29 · Axel-exclusive $495.25

  • Southwest Airlines WN1537 / WN2104: BOS 2027-03-21 05:00:00 → SFO 2027-03-21 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2027-03-21 05:00:00 → DEN 2027-03-21 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2027-03-21 08:40:00 → SFO 2027-03-21 10:30:00.
  • Southwest Airlines WN2331 / WN2900: SFO 2027-03-29 06:00:00 → BOS 2027-03-29 16:20:00; 1 stop(s) via MDW; 440 minutes. Local airport times.
    • WN2331: SFO 2027-03-29 06:00:00 → MDW 2027-03-29 12:15:00; layover at MDW: 60 minutes.
    • WN2900: MDW 2027-03-29 13:15:00 → BOS 2027-03-29 16:20:00.

2027-03-21 → 2027-03-29 · Axel-exclusive $553.00

  • JetBlue Airways B6733: BOS 2027-03-21 20:50:00 → SFO 2027-03-22 00:37:00; nonstop; 407 minutes. Local airport times.
  • JetBlue Airways B6434: SFO 2027-03-29 07:30:00 → BOS 2027-03-29 16:05:00; nonstop; 335 minutes. Local airport times.

2027-03-21 → 2027-03-31 · Axel-exclusive $495.25

  • Southwest Airlines WN1537 / WN2104: BOS 2027-03-21 05:00:00 → SFO 2027-03-21 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2027-03-21 05:00:00 → DEN 2027-03-21 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2027-03-21 08:40:00 → SFO 2027-03-21 10:30:00.
  • Southwest Airlines WN2331 / WN2900: SFO 2027-03-31 06:00:00 → BOS 2027-03-31 16:20:00; 1 stop(s) via MDW; 440 minutes. Local airport times.
    • WN2331: SFO 2027-03-31 06:00:00 → MDW 2027-03-31 12:15:00; layover at MDW: 60 minutes.
    • WN2900: MDW 2027-03-31 13:15:00 → BOS 2027-03-31 16:20:00.

2027-03-21 → 2027-03-31 · Axel-exclusive $553.00

  • JetBlue Airways B6733: BOS 2027-03-21 20:50:00 → SFO 2027-03-22 00:37:00; nonstop; 407 minutes. Local airport times.
  • JetBlue Airways B6334: SFO 2027-03-31 15:25:00 → BOS 2027-03-31 23:59:00; nonstop; 334 minutes. Local airport times.

2027-03-21 → 2027-04-01 · Axel-exclusive $483.75

  • Southwest Airlines WN1537 / WN2104: BOS 2027-03-21 05:00:00 → SFO 2027-03-21 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2027-03-21 05:00:00 → DEN 2027-03-21 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2027-03-21 08:40:00 → SFO 2027-03-21 10:30:00.
  • Southwest Airlines WN2331 / WN2900: SFO 2027-04-01 06:00:00 → BOS 2027-04-01 16:20:00; 1 stop(s) via MDW; 440 minutes. Local airport times.
    • WN2331: SFO 2027-04-01 06:00:00 → MDW 2027-04-01 12:15:00; layover at MDW: 60 minutes.
    • WN2900: MDW 2027-04-01 13:15:00 → BOS 2027-04-01 16:20:00.

2027-03-21 → 2027-04-01 · Axel-exclusive $540.00

  • JetBlue Airways B6733: BOS 2027-03-21 20:50:00 → SFO 2027-03-22 00:37:00; nonstop; 407 minutes. Local airport times.
  • JetBlue Airways B61834: SFO 2027-04-01 06:00:00 → BOS 2027-04-01 14:31:00; nonstop; 331 minutes. Local airport times.

2027-03-21 → 2027-04-02 · Axel-exclusive $483.75

  • Southwest Airlines WN1537 / WN2104: BOS 2027-03-21 05:00:00 → SFO 2027-03-21 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2027-03-21 05:00:00 → DEN 2027-03-21 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2027-03-21 08:40:00 → SFO 2027-03-21 10:30:00.
  • Southwest Airlines WN2989 / WN4431: SFO 2027-04-02 13:05:00 → BOS 2027-04-02 23:25:00; 1 stop(s) via STL; 440 minutes. Local airport times.
    • WN2989: SFO 2027-04-02 13:05:00 → STL 2027-04-02 18:55:00; layover at STL: 60 minutes.
    • WN4431: STL 2027-04-02 19:55:00 → BOS 2027-04-02 23:25:00.

2027-03-21 → 2027-04-02 · Axel-exclusive $540.00

  • JetBlue Airways B6733: BOS 2027-03-21 20:50:00 → SFO 2027-03-22 00:37:00; nonstop; 407 minutes. Local airport times.
  • JetBlue Airways B6434: SFO 2027-04-02 08:10:00 → BOS 2027-04-02 16:45:00; nonstop; 335 minutes. Local airport times.

2027-03-21 → 2027-04-04 · Axel-exclusive $483.75

  • Southwest Airlines WN1537 / WN2104: BOS 2027-03-21 05:00:00 → SFO 2027-03-21 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2027-03-21 05:00:00 → DEN 2027-03-21 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2027-03-21 08:40:00 → SFO 2027-03-21 10:30:00.
  • Southwest Airlines WN2331 / WN2900: SFO 2027-04-04 06:00:00 → BOS 2027-04-04 16:20:00; 1 stop(s) via MDW; 440 minutes. Local airport times.
    • WN2331: SFO 2027-04-04 06:00:00 → MDW 2027-04-04 12:15:00; layover at MDW: 60 minutes.
    • WN2900: MDW 2027-04-04 13:15:00 → BOS 2027-04-04 16:20:00.

2027-03-21 → 2027-04-04 · Axel-exclusive $601.00

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

Explore this route

For AI assistants

  • This page: Boston (BOS) to San Francisco (SFO) · Mar 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.
  • 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.