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

Boston → San Francisco

Sep 20, 2027 · choose your return date

BOS → SFO1 adulteconomyOne way and round trips

12 flight options · 2 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.

September 2027

Sep 20, 2027 · One waySouthwest AirlinesUp to 1 stop each way$228.00 Sep 20, 2027 · One wayJetBlue AirwaysNonstop$256.50 Sep 20, 2027 – Sep 21, 2027 · 1 nightSouthwest AirlinesUp to 1 stop each way$437.00 Sep 20, 2027 – Sep 21, 2027 · 1 nightJetBlue AirwaysNonstop$494.00 Sep 20, 2027 – Sep 22, 2027 · 2 nightsSouthwest AirlinesUp to 1 stop each way$437.00 Sep 20, 2027 – Sep 22, 2027 · 2 nightsJetBlue AirwaysNonstop$494.00 Sep 20, 2027 – Sep 23, 2027 · 3 nightsSouthwest AirlinesUp to 1 stop each way$437.00 Sep 20, 2027 – Sep 23, 2027 · 3 nightsJetBlue AirwaysNonstop$494.00 Sep 20, 2027 – Sep 24, 2027 · 4 nightsSouthwest AirlinesUp to 1 stop each way$437.00 Sep 20, 2027 – Sep 24, 2027 · 4 nightsJetBlue AirwaysNonstop$494.00 Sep 20, 2027 – Sep 25, 2027 · 5 nightsSouthwest AirlinesUp to 1 stop each way$437.00 Sep 20, 2027 – Sep 25, 2027 · 5 nightsJetBlue AirwaysNonstop$494.00

Flights for your trip

  1. Mon, Sep 20 · One way

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

    One-way total · 1 adult · Taxes included

  2. Mon, Sep 20 · One way

    JetBlue Airways
    8:40 pmBOS
    6h 45m
    Nonstop
    12:25 am+1SFO

    One-way total · 1 adult · Taxes included

  3. Mon, Sep 20 – Tue, Sep 21

    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. Mon, Sep 20 – Tue, Sep 21

    JetBlue Airways
    8:40 pmBOS
    6h 45m
    Nonstop
    12:25 am+1SFO
    JetBlue Airways
    7:30 amSFO
    5h 35m
    Nonstop
    4:05 pmBOS

    Round-trip total · 1 adult · Taxes included

  5. Mon, Sep 20 – Wed, Sep 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

  6. Mon, Sep 20 – Wed, Sep 22

    JetBlue Airways
    8:40 pmBOS
    6h 45m
    Nonstop
    12:25 am+1SFO
    JetBlue Airways
    3:25 pmSFO
    5h 34m
    Nonstop
    11:59 pmBOS

    Round-trip total · 1 adult · Taxes included

  7. Mon, Sep 20 – Thu, Sep 23

    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. Mon, Sep 20 – Thu, Sep 23

    JetBlue Airways
    8:40 pmBOS
    6h 45m
    Nonstop
    12:25 am+1SFO
    JetBlue Airways
    6:00 amSFO
    5h 31m
    Nonstop
    2:31 pmBOS

    Round-trip total · 1 adult · Taxes included

  9. Mon, Sep 20 – Fri, Sep 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

  10. Mon, Sep 20 – Fri, Sep 24

    JetBlue Airways
    8:40 pmBOS
    6h 45m
    Nonstop
    12:25 am+1SFO
    JetBlue Airways
    11:45 pmSFO
    5h 34m
    Nonstop
    8:19 am+1BOS

    Round-trip total · 1 adult · Taxes included

  11. Mon, Sep 20 – Sat, Sep 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

  12. Mon, Sep 20 – Sat, Sep 25

    JetBlue Airways
    8:40 pmBOS
    6h 45m
    Nonstop
    12:25 am+1SFO
    JetBlue Airways
    8:10 amSFO
    5h 35m
    Nonstop
    4:45 pmBOS

    Round-trip total · 1 adult · Taxes included

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BOS ⇄ SFO

Economy

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

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Explore this route

All dates for this routeSep 19, 2027 · Return optionsSep 21, 2027 · 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)
2027-09-20 · one wayJetBlue AirwaysB6333Axel-exclusive $256.502026-10-29T00:52:48Z
2027-09-20 · one waySouthwest AirlinesWN1537 + WN2104Axel-exclusive $228.002026-10-29T00:52:48Z
2027-09-20 → 2027-09-21JetBlue AirwaysB6333 / B6434Axel-exclusive $494.002026-10-29T00:52:48Z
2027-09-20 → 2027-09-21Southwest AirlinesWN1537 + WN2104 / WN2989 + WN4431Axel-exclusive $437.002026-10-29T00:52:48Z
2027-09-20 → 2027-09-22JetBlue AirwaysB6333 / B6334Axel-exclusive $494.002026-10-29T00:52:48Z
2027-09-20 → 2027-09-22Southwest AirlinesWN1537 + WN2104 / WN2331 + WN2900Axel-exclusive $437.002026-10-29T00:52:48Z
2027-09-20 → 2027-09-23JetBlue AirwaysB6333 / B61834Axel-exclusive $494.002026-10-29T00:52:48Z
2027-09-20 → 2027-09-23Southwest AirlinesWN1537 + WN2104 / WN2989 + WN4431Axel-exclusive $437.002026-10-29T00:52:48Z
2027-09-20 → 2027-09-24JetBlue AirwaysB6333 / B6734Axel-exclusive $494.002026-10-29T00:52:48Z
2027-09-20 → 2027-09-24Southwest AirlinesWN1537 + WN2104 / WN2989 + WN4431Axel-exclusive $437.002026-10-29T00:52:48Z
2027-09-20 → 2027-09-25JetBlue AirwaysB6333 / B6434Axel-exclusive $494.002026-10-29T00:52:48Z
2027-09-20 → 2027-09-25Southwest AirlinesWN1537 + WN2104 / WN2989 + WN4431Axel-exclusive $437.002026-10-29T00:52:48Z

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

2027-09-20 · one way · Axel-exclusive $228.00

  • Southwest Airlines WN1537 / WN2104: BOS 2027-09-20 05:00:00 → SFO 2027-09-20 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2027-09-20 05:00:00 → DEN 2027-09-20 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2027-09-20 08:40:00 → SFO 2027-09-20 10:30:00.

2027-09-20 · one way · Axel-exclusive $256.50

  • JetBlue Airways B6333: BOS 2027-09-20 20:40:00 → SFO 2027-09-21 00:25:00; nonstop; 405 minutes. Local airport times.

2027-09-20 → 2027-09-21 · Axel-exclusive $437.00

  • Southwest Airlines WN1537 / WN2104: BOS 2027-09-20 05:00:00 → SFO 2027-09-20 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2027-09-20 05:00:00 → DEN 2027-09-20 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2027-09-20 08:40:00 → SFO 2027-09-20 10:30:00.
  • Southwest Airlines WN2989 / WN4431: SFO 2027-09-21 13:05:00 → BOS 2027-09-21 23:25:00; 1 stop(s) via STL; 440 minutes. Local airport times.
    • WN2989: SFO 2027-09-21 13:05:00 → STL 2027-09-21 18:55:00; layover at STL: 60 minutes.
    • WN4431: STL 2027-09-21 19:55:00 → BOS 2027-09-21 23:25:00.

2027-09-20 → 2027-09-21 · Axel-exclusive $494.00

  • JetBlue Airways B6333: BOS 2027-09-20 20:40:00 → SFO 2027-09-21 00:25:00; nonstop; 405 minutes. Local airport times.
  • JetBlue Airways B6434: SFO 2027-09-21 07:30:00 → BOS 2027-09-21 16:05:00; nonstop; 335 minutes. Local airport times.

2027-09-20 → 2027-09-22 · Axel-exclusive $437.00

  • Southwest Airlines WN1537 / WN2104: BOS 2027-09-20 05:00:00 → SFO 2027-09-20 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2027-09-20 05:00:00 → DEN 2027-09-20 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2027-09-20 08:40:00 → SFO 2027-09-20 10:30:00.
  • Southwest Airlines WN2331 / WN2900: SFO 2027-09-22 06:00:00 → BOS 2027-09-22 16:20:00; 1 stop(s) via MDW; 440 minutes. Local airport times.
    • WN2331: SFO 2027-09-22 06:00:00 → MDW 2027-09-22 12:15:00; layover at MDW: 60 minutes.
    • WN2900: MDW 2027-09-22 13:15:00 → BOS 2027-09-22 16:20:00.

2027-09-20 → 2027-09-22 · Axel-exclusive $494.00

  • JetBlue Airways B6333: BOS 2027-09-20 20:40:00 → SFO 2027-09-21 00:25:00; nonstop; 405 minutes. Local airport times.
  • JetBlue Airways B6334: SFO 2027-09-22 15:25:00 → BOS 2027-09-22 23:59:00; nonstop; 334 minutes. Local airport times.

2027-09-20 → 2027-09-23 · Axel-exclusive $437.00

  • Southwest Airlines WN1537 / WN2104: BOS 2027-09-20 05:00:00 → SFO 2027-09-20 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2027-09-20 05:00:00 → DEN 2027-09-20 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2027-09-20 08:40:00 → SFO 2027-09-20 10:30:00.
  • Southwest Airlines WN2989 / WN4431: SFO 2027-09-23 13:05:00 → BOS 2027-09-23 23:25:00; 1 stop(s) via STL; 440 minutes. Local airport times.
    • WN2989: SFO 2027-09-23 13:05:00 → STL 2027-09-23 18:55:00; layover at STL: 60 minutes.
    • WN4431: STL 2027-09-23 19:55:00 → BOS 2027-09-23 23:25:00.

2027-09-20 → 2027-09-23 · Axel-exclusive $494.00

  • JetBlue Airways B6333: BOS 2027-09-20 20:40:00 → SFO 2027-09-21 00:25:00; nonstop; 405 minutes. Local airport times.
  • JetBlue Airways B61834: SFO 2027-09-23 06:00:00 → BOS 2027-09-23 14:31:00; nonstop; 331 minutes. Local airport times.

2027-09-20 → 2027-09-24 · Axel-exclusive $437.00

  • Southwest Airlines WN1537 / WN2104: BOS 2027-09-20 05:00:00 → SFO 2027-09-20 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2027-09-20 05:00:00 → DEN 2027-09-20 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2027-09-20 08:40:00 → SFO 2027-09-20 10:30:00.
  • Southwest Airlines WN2989 / WN4431: SFO 2027-09-24 13:05:00 → BOS 2027-09-24 23:25:00; 1 stop(s) via STL; 440 minutes. Local airport times.
    • WN2989: SFO 2027-09-24 13:05:00 → STL 2027-09-24 18:55:00; layover at STL: 60 minutes.
    • WN4431: STL 2027-09-24 19:55:00 → BOS 2027-09-24 23:25:00.

2027-09-20 → 2027-09-24 · Axel-exclusive $494.00

  • JetBlue Airways B6333: BOS 2027-09-20 20:40:00 → SFO 2027-09-21 00:25:00; nonstop; 405 minutes. Local airport times.
  • JetBlue Airways B6734: SFO 2027-09-24 23:45:00 → BOS 2027-09-25 08:19:00; nonstop; 334 minutes. Local airport times.

2027-09-20 → 2027-09-25 · Axel-exclusive $437.00

  • Southwest Airlines WN1537 / WN2104: BOS 2027-09-20 05:00:00 → SFO 2027-09-20 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
    • WN1537: BOS 2027-09-20 05:00:00 → DEN 2027-09-20 07:40:00; layover at DEN: 60 minutes.
    • WN2104: DEN 2027-09-20 08:40:00 → SFO 2027-09-20 10:30:00.
  • Southwest Airlines WN2989 / WN4431: SFO 2027-09-25 13:05:00 → BOS 2027-09-25 23:25:00; 1 stop(s) via STL; 440 minutes. Local airport times.
    • WN2989: SFO 2027-09-25 13:05:00 → STL 2027-09-25 18:55:00; layover at STL: 60 minutes.
    • WN4431: STL 2027-09-25 19:55:00 → BOS 2027-09-25 23:25:00.

2027-09-20 → 2027-09-25 · Axel-exclusive $494.00

  • JetBlue Airways B6333: BOS 2027-09-20 20:40:00 → SFO 2027-09-21 00:25:00; nonstop; 405 minutes. Local airport times.
  • JetBlue Airways B6434: SFO 2027-09-25 08:10:00 → BOS 2027-09-25 16:45:00; nonstop; 335 minutes. Local airport times.

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For AI assistants

  • This page: Boston (BOS) to San Francisco (SFO) · Sep 20, 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.
  • 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.