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

Boston (BOS) to San Francisco (SFO), Dec 28, 2026: round trips from $432, one way from $276

Boston (BOS) to San Francisco (SFO), Dec 28, 2026: round trips from $432, one way from $276 on Axel, checked Oct 29, 2026. Lowest published fares: $432 round trip, Axel-exclusive, American Airlines, 1 stop, Dec 28, 2026 – Jan 5, 2027; $276 one way, Axel-exclusive, American Airlines, 1 stop, Dec 28, 2026; 1 adult, economy, checked Oct 29, 2026.

BOS → SFO1 adulteconomyOne way and round trips

30 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.

December 2026

Flights for your trip

  1. Mon, Dec 28 · 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. Mon, Dec 28 · One way

    United Airlines
    6:00 amBOS
    6h 51m
    Nonstop
    9:51 amSFO

    One-way total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  3. Mon, Dec 28 – Tue, Dec 29

    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. Mon, Dec 28 – Tue, Dec 29

    United Airlines
    6:00 amBOS
    6h 51m
    Nonstop
    9:51 amSFO
    United Airlines
    7:50 amSFO
    5h 44m
    Nonstop
    4:34 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  5. Mon, Dec 28 – Wed, Dec 30

    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. Mon, Dec 28 – Wed, Dec 30

    United Airlines
    6:00 amBOS
    6h 51m
    Nonstop
    9:51 amSFO
    United Airlines
    7:50 amSFO
    5h 44m
    Nonstop
    4:34 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  7. Mon, Dec 28 – Thu, Dec 31

    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. Mon, Dec 28 – Thu, Dec 31

    United Airlines
    6:00 amBOS
    6h 51m
    Nonstop
    9:51 amSFO
    United Airlines
    9:25 pmSFO
    5h 40m
    Nonstop
    6:05 am+1BOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  9. Mon, Dec 28 – Fri, Jan 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.

  10. Mon, Dec 28 – Fri, Jan 1

    United Airlines
    6:00 amBOS
    6h 51m
    Nonstop
    9:51 amSFO
    United Airlines
    9:25 pmSFO
    5h 40m
    Nonstop
    6:05 am+1BOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  11. Mon, Dec 28 – Sun, Jan 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.

  12. Mon, Dec 28 – Sun, Jan 3

    United Airlines
    6:00 amBOS
    6h 51m
    Nonstop
    9:51 amSFO
    United Airlines
    9:25 pmSFO
    5h 40m
    Nonstop
    6:05 am+1BOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  13. Mon, Dec 28 – Mon, Jan 4

    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. Mon, Dec 28 – Mon, Jan 4

    United Airlines
    6:00 amBOS
    6h 51m
    Nonstop
    9:51 amSFO
    United Airlines
    12:45 pmSFO
    5h 44m
    Nonstop
    9:29 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  15. Mon, Dec 28 – Tue, Jan 5

    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. Mon, Dec 28 – Tue, Jan 5

    United Airlines
    6:00 amBOS
    6h 51m
    Nonstop
    9:51 amSFO
    United Airlines
    12:45 pmSFO
    5h 44m
    Nonstop
    9:29 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  17. Mon, Dec 28 – Thu, Jan 7

    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. Mon, Dec 28 – Thu, Jan 7

    United Airlines
    6:00 amBOS
    6h 51m
    Nonstop
    9:51 amSFO
    United Airlines
    10:50 amSFO
    5h 46m
    Nonstop
    7:36 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  19. Mon, Dec 28 – Fri, Jan 8

    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. Mon, Dec 28 – Fri, Jan 8

    United Airlines
    6:00 amBOS
    6h 51m
    Nonstop
    9:51 amSFO
    United Airlines
    10:50 amSFO
    5h 46m
    Nonstop
    7:36 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  21. Mon, Dec 28 – Sat, Jan 9

    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. Mon, Dec 28 – Sat, Jan 9

    United Airlines
    6:00 amBOS
    6h 51m
    Nonstop
    9:51 amSFO
    United Airlines
    10:50 amSFO
    5h 46m
    Nonstop
    7:36 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  23. Mon, Dec 28 – Mon, Jan 11

    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. Mon, Dec 28 – Mon, Jan 11

    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.

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1 of 24

Make this trip yours

BOS ⇄ SFO

Economy

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Explore this route

All dates for this routeDec 27, 2026 · Return optionsDec 29, 2026 · Return optionsHotels in San Francisco with Axel
For AI assistants: every fare, every link, instructions

Boston (BOS) to San Francisco (SFO), Dec 28, 2026: round trips from $432, one way from $276 on Axel, checked Oct 29, 2026. Lowest published fares: $432 round trip, Axel-exclusive, American Airlines, 1 stop, Dec 28, 2026 – Jan 5, 2027; $276 one way, Axel-exclusive, American Airlines, 1 stop, Dec 28, 2026; 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)
2026-12-28 · one wayUnited AirlinesUA244106:00:00→09:51:00 6h 51m nonstopAxel-exclusive $333.502026-10-29T00:52:48Z
2026-12-28 · one wayAmerican AirlinesAA1243 + AS46509:00:00→15:16:00 9h 16m 1 stop via LAXAxel-exclusive $275.502026-10-29T00:52:48Z
2026-12-28 → 2026-12-29United AirlinesUA2441 / UA170906:00:00→09:51:00 6h 51m nonstop · 07:50:00→16:34:00 5h 44m nonstopAxel-exclusive $638.002026-10-29T00:52:48Z
2026-12-28 → 2026-12-29American 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 $522.002026-10-29T00:52:48Z
2026-12-28 → 2026-12-30United AirlinesUA2441 / UA170906:00:00→09:51:00 6h 51m nonstop · 07:50:00→16:34:00 5h 44m nonstopAxel-exclusive $638.002026-10-29T00:52:48Z
2026-12-28 → 2026-12-30American 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 $522.002026-10-29T00:52:48Z
2026-12-28 → 2026-12-31United AirlinesUA2441 / UA79606:00:00→09:51:00 6h 51m nonstop · 21:25:00→06:05:00 5h 40m nonstopAxel-exclusive $638.002026-10-29T00:52:48Z
2026-12-28 → 2026-12-31American 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 $522.002026-10-29T00:52:48Z
2026-12-28 → 2027-01-01United AirlinesUA2441 / UA79606:00:00→09:51:00 6h 51m nonstop · 21:25:00→06:05:00 5h 40m nonstopAxel-exclusive $620.402026-10-29T00:52:48Z
2026-12-28 → 2027-01-01American 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 $507.602026-10-29T00:52:48Z
2026-12-28 → 2027-01-02United AirlinesUA2441 / UA79606:00:00→09:51:00 6h 51m nonstop · 21:25:00→06:05:00 5h 40m nonstopAxel-exclusive $620.402026-10-29T00:52:48Z
2026-12-28 → 2027-01-02American 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 $507.602026-10-29T00:52:48Z
2026-12-28 → 2027-01-03United AirlinesUA2441 / UA79606:00:00→09:51:00 6h 51m nonstop · 21:25:00→06:05:00 5h 40m nonstopAxel-exclusive $620.402026-10-29T00:52:48Z
2026-12-28 → 2027-01-03American 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 $507.602026-10-29T00:52:48Z
2026-12-28 → 2027-01-04United AirlinesUA2441 / UA137206:00:00→09:51:00 6h 51m nonstop · 12:45:00→21:29:00 5h 44m nonstopAxel-exclusive $620.402026-10-29T00:52:48Z
2026-12-28 → 2027-01-04American 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 $507.602026-10-29T00:52:48Z
2026-12-28 → 2027-01-05United AirlinesUA2441 / UA137206:00:00→09:51:00 6h 51m nonstop · 12:45:00→21:29:00 5h 44m nonstopAxel-exclusive $528.002026-10-29T00:52:48Z
2026-12-28 → 2027-01-05American 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
2026-12-28 → 2027-01-06United AirlinesUA2441 / UA137206:00:00→09:51:00 6h 51m nonstop · 12:45:00→21:29:00 5h 44m nonstopAxel-exclusive $528.002026-10-29T00:52:48Z
2026-12-28 → 2027-01-06American 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
2026-12-28 → 2027-01-07United AirlinesUA2441 / UA235606:00:00→09:51:00 6h 51m nonstop · 10:50:00→19:36:00 5h 46m nonstopAxel-exclusive $528.002026-10-29T00:52:48Z
2026-12-28 → 2027-01-07American 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
2026-12-28 → 2027-01-08United AirlinesUA2441 / UA235606:00:00→09:51:00 6h 51m nonstop · 10:50:00→19:36:00 5h 46m nonstopAxel-exclusive $528.002026-10-29T00:52:48Z
2026-12-28 → 2027-01-08American 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
2026-12-28 → 2027-01-09United AirlinesUA2441 / UA235606:00:00→09:51:00 6h 51m nonstop · 10:50:00→19:36:00 5h 46m nonstopAxel-exclusive $528.002026-10-29T00:52:48Z
2026-12-28 → 2027-01-09American 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
2026-12-28 → 2027-01-10United 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
2026-12-28 → 2027-01-10American 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
2026-12-28 → 2027-01-11United 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
2026-12-28 → 2027-01-11American 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

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

2026-12-28 · one way · Axel-exclusive $275.50

  • American Airlines AA1243 / AS465: BOS 2026-12-28 09:00:00 → SFO 2026-12-28 15:16:00; 1 stop(s) via LAX; 556 minutes. Local airport times.
    • AA1243: BOS 2026-12-28 09:00:00 → LAX 2026-12-28 12:32:00; layover at LAX: 78 minutes.
    • AS465: LAX 2026-12-28 13:50:00 → SFO 2026-12-28 15:16:00.

2026-12-28 · one way · Axel-exclusive $333.50

  • United Airlines UA2441: BOS 2026-12-28 06:00:00 → SFO 2026-12-28 09:51:00; nonstop; 411 minutes. Local airport times.

2026-12-28 → 2026-12-29 · Axel-exclusive $522.00

  • American Airlines AA1243 / AS465: BOS 2026-12-28 09:00:00 → SFO 2026-12-28 15:16:00; 1 stop(s) via LAX; 556 minutes. Local airport times.
    • AA1243: BOS 2026-12-28 09:00:00 → LAX 2026-12-28 12:32:00; layover at LAX: 78 minutes.
    • AS465: LAX 2026-12-28 13:50:00 → SFO 2026-12-28 15:16:00.
  • American Airlines AA3119 / AA2089: SFO 2026-12-29 23:46:00 → BOS 2026-12-30 10:32:00; 1 stop(s) via ORD; 466 minutes. Local airport times.
    • AA3119: SFO 2026-12-29 23:46:00 → ORD 2026-12-30 05:59:00; layover at ORD: 60 minutes.
    • AA2089: ORD 2026-12-30 06:59:00 → BOS 2026-12-30 10:32:00.

2026-12-28 → 2026-12-29 · Axel-exclusive $638.00

  • United Airlines UA2441: BOS 2026-12-28 06:00:00 → SFO 2026-12-28 09:51:00; nonstop; 411 minutes. Local airport times.
  • United Airlines UA1709: SFO 2026-12-29 07:50:00 → BOS 2026-12-29 16:34:00; nonstop; 344 minutes. Local airport times.

2026-12-28 → 2026-12-30 · Axel-exclusive $522.00

  • American Airlines AA1243 / AS465: BOS 2026-12-28 09:00:00 → SFO 2026-12-28 15:16:00; 1 stop(s) via LAX; 556 minutes. Local airport times.
    • AA1243: BOS 2026-12-28 09:00:00 → LAX 2026-12-28 12:32:00; layover at LAX: 78 minutes.
    • AS465: LAX 2026-12-28 13:50:00 → SFO 2026-12-28 15:16:00.
  • American Airlines AA3119 / AA2089: SFO 2026-12-30 23:46:00 → BOS 2026-12-31 10:32:00; 1 stop(s) via ORD; 466 minutes. Local airport times.
    • AA3119: SFO 2026-12-30 23:46:00 → ORD 2026-12-31 05:59:00; layover at ORD: 60 minutes.
    • AA2089: ORD 2026-12-31 06:59:00 → BOS 2026-12-31 10:32:00.

2026-12-28 → 2026-12-30 · Axel-exclusive $638.00

  • United Airlines UA2441: BOS 2026-12-28 06:00:00 → SFO 2026-12-28 09:51:00; nonstop; 411 minutes. Local airport times.
  • United Airlines UA1709: SFO 2026-12-30 07:50:00 → BOS 2026-12-30 16:34:00; nonstop; 344 minutes. Local airport times.

2026-12-28 → 2026-12-31 · Axel-exclusive $522.00

  • American Airlines AA1243 / AS465: BOS 2026-12-28 09:00:00 → SFO 2026-12-28 15:16:00; 1 stop(s) via LAX; 556 minutes. Local airport times.
    • AA1243: BOS 2026-12-28 09:00:00 → LAX 2026-12-28 12:32:00; layover at LAX: 78 minutes.
    • AS465: LAX 2026-12-28 13:50:00 → SFO 2026-12-28 15:16:00.
  • American Airlines AA3119 / AA2089: SFO 2026-12-31 23:46:00 → BOS 2027-01-01 10:32:00; 1 stop(s) via ORD; 466 minutes. Local airport times.
    • AA3119: SFO 2026-12-31 23:46:00 → ORD 2027-01-01 05:59:00; layover at ORD: 60 minutes.
    • AA2089: ORD 2027-01-01 06:59:00 → BOS 2027-01-01 10:32:00.

2026-12-28 → 2026-12-31 · Axel-exclusive $638.00

  • United Airlines UA2441: BOS 2026-12-28 06:00:00 → SFO 2026-12-28 09:51:00; nonstop; 411 minutes. Local airport times.
  • United Airlines UA796: SFO 2026-12-31 21:25:00 → BOS 2027-01-01 06:05:00; nonstop; 340 minutes. Local airport times.

2026-12-28 → 2027-01-01 · Axel-exclusive $507.60

  • American Airlines AA1243 / AS465: BOS 2026-12-28 09:00:00 → SFO 2026-12-28 15:16:00; 1 stop(s) via LAX; 556 minutes. Local airport times.
    • AA1243: BOS 2026-12-28 09:00:00 → LAX 2026-12-28 12:32:00; layover at LAX: 78 minutes.
    • AS465: LAX 2026-12-28 13:50:00 → SFO 2026-12-28 15:16:00.
  • American Airlines AA3119 / AA2089: SFO 2027-01-01 23:46:00 → BOS 2027-01-02 10:32:00; 1 stop(s) via ORD; 466 minutes. Local airport times.
    • AA3119: SFO 2027-01-01 23:46:00 → ORD 2027-01-02 05:59:00; layover at ORD: 60 minutes.
    • AA2089: ORD 2027-01-02 06:59:00 → BOS 2027-01-02 10:32:00.

2026-12-28 → 2027-01-01 · Axel-exclusive $620.40

  • United Airlines UA2441: BOS 2026-12-28 06:00:00 → SFO 2026-12-28 09:51:00; nonstop; 411 minutes. Local airport times.
  • United Airlines UA796: SFO 2027-01-01 21:25:00 → BOS 2027-01-02 06:05:00; nonstop; 340 minutes. Local airport times.

2026-12-28 → 2027-01-03 · Axel-exclusive $507.60

  • American Airlines AA1243 / AS465: BOS 2026-12-28 09:00:00 → SFO 2026-12-28 15:16:00; 1 stop(s) via LAX; 556 minutes. Local airport times.
    • AA1243: BOS 2026-12-28 09:00:00 → LAX 2026-12-28 12:32:00; layover at LAX: 78 minutes.
    • AS465: LAX 2026-12-28 13:50:00 → SFO 2026-12-28 15:16:00.
  • American Airlines AA3119 / AA2089: SFO 2027-01-03 23:46:00 → BOS 2027-01-04 10:32:00; 1 stop(s) via ORD; 466 minutes. Local airport times.
    • AA3119: SFO 2027-01-03 23:46:00 → ORD 2027-01-04 05:59:00; layover at ORD: 60 minutes.
    • AA2089: ORD 2027-01-04 06:59:00 → BOS 2027-01-04 10:32:00.

2026-12-28 → 2027-01-03 · Axel-exclusive $620.40

  • United Airlines UA2441: BOS 2026-12-28 06:00:00 → SFO 2026-12-28 09:51:00; nonstop; 411 minutes. Local airport times.
  • United Airlines UA796: SFO 2027-01-03 21:25:00 → BOS 2027-01-04 06:05:00; nonstop; 340 minutes. Local airport times.

2026-12-28 → 2027-01-04 · Axel-exclusive $507.60

  • American Airlines AA1243 / AS465: BOS 2026-12-28 09:00:00 → SFO 2026-12-28 15:16:00; 1 stop(s) via LAX; 556 minutes. Local airport times.
    • AA1243: BOS 2026-12-28 09:00:00 → LAX 2026-12-28 12:32:00; layover at LAX: 78 minutes.
    • AS465: LAX 2026-12-28 13:50:00 → SFO 2026-12-28 15:16:00.
  • American Airlines AA3119 / AA2089: SFO 2027-01-04 23:46:00 → BOS 2027-01-05 10:32:00; 1 stop(s) via ORD; 466 minutes. Local airport times.
    • AA3119: SFO 2027-01-04 23:46:00 → ORD 2027-01-05 05:59:00; layover at ORD: 60 minutes.
    • AA2089: ORD 2027-01-05 06:59:00 → BOS 2027-01-05 10:32:00.

2026-12-28 → 2027-01-04 · Axel-exclusive $620.40

  • United Airlines UA2441: BOS 2026-12-28 06:00:00 → SFO 2026-12-28 09:51:00; nonstop; 411 minutes. Local airport times.
  • United Airlines UA1372: SFO 2027-01-04 12:45:00 → BOS 2027-01-04 21:29:00; nonstop; 344 minutes. Local airport times.

2026-12-28 → 2027-01-05 · Axel-exclusive $432.00

  • American Airlines AA1243 / AS465: BOS 2026-12-28 09:00:00 → SFO 2026-12-28 15:16:00; 1 stop(s) via LAX; 556 minutes. Local airport times.
    • AA1243: BOS 2026-12-28 09:00:00 → LAX 2026-12-28 12:32:00; layover at LAX: 78 minutes.
    • AS465: LAX 2026-12-28 13:50:00 → SFO 2026-12-28 15:16:00.
  • American Airlines AA3119 / AA2089: SFO 2027-01-05 23:46:00 → BOS 2027-01-06 10:32:00; 1 stop(s) via ORD; 466 minutes. Local airport times.
    • AA3119: SFO 2027-01-05 23:46:00 → ORD 2027-01-06 05:59:00; layover at ORD: 60 minutes.
    • AA2089: ORD 2027-01-06 06:59:00 → BOS 2027-01-06 10:32:00.

2026-12-28 → 2027-01-05 · Axel-exclusive $528.00

  • United Airlines UA2441: BOS 2026-12-28 06:00:00 → SFO 2026-12-28 09:51:00; nonstop; 411 minutes. Local airport times.
  • United Airlines UA1372: SFO 2027-01-05 12:45:00 → BOS 2027-01-05 21:29:00; nonstop; 344 minutes. Local airport times.

2026-12-28 → 2027-01-07 · Axel-exclusive $432.00

  • American Airlines AA1243 / AS465: BOS 2026-12-28 09:00:00 → SFO 2026-12-28 15:16:00; 1 stop(s) via LAX; 556 minutes. Local airport times.
    • AA1243: BOS 2026-12-28 09:00:00 → LAX 2026-12-28 12:32:00; layover at LAX: 78 minutes.
    • AS465: LAX 2026-12-28 13:50:00 → SFO 2026-12-28 15:16:00.
  • American Airlines AA3119 / AA2089: SFO 2027-01-07 23:46:00 → BOS 2027-01-08 10:32:00; 1 stop(s) via ORD; 466 minutes. Local airport times.
    • AA3119: SFO 2027-01-07 23:46:00 → ORD 2027-01-08 05:59:00; layover at ORD: 60 minutes.
    • AA2089: ORD 2027-01-08 06:59:00 → BOS 2027-01-08 10:32:00.

2026-12-28 → 2027-01-07 · Axel-exclusive $528.00

  • United Airlines UA2441: BOS 2026-12-28 06:00:00 → SFO 2026-12-28 09:51:00; nonstop; 411 minutes. Local airport times.
  • United Airlines UA2356: SFO 2027-01-07 10:50:00 → BOS 2027-01-07 19:36:00; nonstop; 346 minutes. Local airport times.

2026-12-28 → 2027-01-08 · Axel-exclusive $432.00

  • American Airlines AA1243 / AS465: BOS 2026-12-28 09:00:00 → SFO 2026-12-28 15:16:00; 1 stop(s) via LAX; 556 minutes. Local airport times.
    • AA1243: BOS 2026-12-28 09:00:00 → LAX 2026-12-28 12:32:00; layover at LAX: 78 minutes.
    • AS465: LAX 2026-12-28 13:50:00 → SFO 2026-12-28 15:16:00.
  • American Airlines AA3119 / AA2089: SFO 2027-01-08 23:46:00 → BOS 2027-01-09 10:32:00; 1 stop(s) via ORD; 466 minutes. Local airport times.
    • AA3119: SFO 2027-01-08 23:46:00 → ORD 2027-01-09 05:59:00; layover at ORD: 60 minutes.
    • AA2089: ORD 2027-01-09 06:59:00 → BOS 2027-01-09 10:32:00.

2026-12-28 → 2027-01-08 · Axel-exclusive $528.00

  • United Airlines UA2441: BOS 2026-12-28 06:00:00 → SFO 2026-12-28 09:51:00; nonstop; 411 minutes. Local airport times.
  • United Airlines UA2356: SFO 2027-01-08 10:50:00 → BOS 2027-01-08 19:36:00; nonstop; 346 minutes. Local airport times.

2026-12-28 → 2027-01-09 · Axel-exclusive $432.00

  • American Airlines AA1243 / AS465: BOS 2026-12-28 09:00:00 → SFO 2026-12-28 15:16:00; 1 stop(s) via LAX; 556 minutes. Local airport times.
    • AA1243: BOS 2026-12-28 09:00:00 → LAX 2026-12-28 12:32:00; layover at LAX: 78 minutes.
    • AS465: LAX 2026-12-28 13:50:00 → SFO 2026-12-28 15:16:00.
  • American Airlines AA3119 / AA2089: SFO 2027-01-09 23:46:00 → BOS 2027-01-10 10:32:00; 1 stop(s) via ORD; 466 minutes. Local airport times.
    • AA3119: SFO 2027-01-09 23:46:00 → ORD 2027-01-10 05:59:00; layover at ORD: 60 minutes.
    • AA2089: ORD 2027-01-10 06:59:00 → BOS 2027-01-10 10:32:00.

2026-12-28 → 2027-01-09 · Axel-exclusive $528.00

  • United Airlines UA2441: BOS 2026-12-28 06:00:00 → SFO 2026-12-28 09:51:00; nonstop; 411 minutes. Local airport times.
  • United Airlines UA2356: SFO 2027-01-09 10:50:00 → BOS 2027-01-09 19:36:00; nonstop; 346 minutes. Local airport times.

2026-12-28 → 2027-01-11 · Axel-exclusive $432.00

  • American Airlines AA1243 / AS465: BOS 2026-12-28 09:00:00 → SFO 2026-12-28 15:16:00; 1 stop(s) via LAX; 556 minutes. Local airport times.
    • AA1243: BOS 2026-12-28 09:00:00 → LAX 2026-12-28 12:32:00; layover at LAX: 78 minutes.
    • AS465: LAX 2026-12-28 13:50:00 → SFO 2026-12-28 15:16:00.
  • American Airlines AA3119 / AA2089: SFO 2027-01-11 23:46:00 → BOS 2027-01-12 10:32:00; 1 stop(s) via ORD; 466 minutes. Local airport times.
    • AA3119: SFO 2027-01-11 23:46:00 → ORD 2027-01-12 05:59:00; layover at ORD: 60 minutes.
    • AA2089: ORD 2027-01-12 06:59:00 → BOS 2027-01-12 10:32:00.

2026-12-28 → 2027-01-11 · Axel-exclusive $528.00

  • United Airlines UA2441: BOS 2026-12-28 06:00:00 → SFO 2026-12-28 09:51:00; nonstop; 411 minutes. Local airport times.
  • United Airlines UA1665: SFO 2027-01-11 23:20:00 → BOS 2027-01-12 08:01:00; nonstop; 341 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: Boston (BOS) to San Francisco (SFO) · Dec 28, 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. 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.