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

Boston → San Francisco

Dec 18, 2026 · choose your return date

BOS → SFO1 adulteconomyOne way and round trips

15 flight options · 1 airline

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. Fri, Dec 18 · One way

    Delta Air Lines
    7:50 amBOS
    6h 51m
    Nonstop
    11:41 amSFO

    One-way total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  2. Fri, Dec 18 – Sat, Dec 19

    Delta Air Lines
    7:50 amBOS
    6h 51m
    Nonstop
    11:41 amSFO
    Delta Air Lines
    7:20 amSFO
    5h 35m
    Nonstop
    3:55 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  3. Fri, Dec 18 – Sun, Dec 20

    Delta Air Lines
    7:50 amBOS
    6h 51m
    Nonstop
    11:41 amSFO
    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.

  4. Fri, Dec 18 – Mon, Dec 21

    Delta Air Lines
    7:50 amBOS
    6h 51m
    Nonstop
    11:41 amSFO
    Delta Air Lines
    7:00 amSFO
    5h 34m
    Nonstop
    3:34 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  5. Fri, Dec 18 – Tue, Dec 22

    Delta Air Lines
    7:50 amBOS
    6h 51m
    Nonstop
    11:41 amSFO
    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.

  6. Fri, Dec 18 – Thu, Dec 24

    Delta Air Lines
    7:50 amBOS
    6h 51m
    Nonstop
    11:41 amSFO
    Delta Air Lines
    1:05 pmSFO
    5h 35m
    Nonstop
    9:40 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  7. Fri, Dec 18 – Fri, Dec 25

    Delta Air Lines
    7:50 amBOS
    6h 51m
    Nonstop
    11:41 amSFO
    Delta Air Lines
    7:00 amSFO
    5h 34m
    Nonstop
    3:34 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  8. Fri, Dec 18 – Sat, Dec 26

    Delta Air Lines
    7:50 amBOS
    6h 51m
    Nonstop
    11:41 amSFO
    Delta Air Lines
    7:20 amSFO
    5h 35m
    Nonstop
    3:55 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  9. Fri, Dec 18 – Mon, Dec 28

    Delta Air Lines
    7:50 amBOS
    6h 51m
    Nonstop
    11:41 amSFO
    Delta Air Lines
    1:05 pmSFO
    5h 35m
    Nonstop
    9:40 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  10. Fri, Dec 18 – Tue, Dec 29

    Delta Air Lines
    7:50 amBOS
    6h 51m
    Nonstop
    11:41 amSFO
    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.

  11. Fri, Dec 18 – Wed, Dec 30

    Delta Air Lines
    7:50 amBOS
    6h 51m
    Nonstop
    11:41 amSFO
    Delta Air Lines
    1:05 pmSFO
    5h 35m
    Nonstop
    9:40 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  12. Fri, Dec 18 – Fri, Jan 1

    Delta Air Lines
    7:50 amBOS
    6h 51m
    Nonstop
    11:41 amSFO
    Delta Air Lines
    7:00 amSFO
    5h 34m
    Nonstop
    3:34 pmBOS

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

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Make this trip yours

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 routeDec 17, 2026 · Return optionsDec 19, 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.

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 datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-18 · one wayDelta Air LinesDL977Axel-exclusive $333.502026-10-29T00:52:48Z
2026-12-18 → 2026-12-19Delta Air LinesDL977 / DL400Axel-exclusive $638.002026-10-29T00:52:48Z
2026-12-18 → 2026-12-20Delta Air LinesDL977 / DL400Axel-exclusive $638.002026-10-29T00:52:48Z
2026-12-18 → 2026-12-21Delta Air LinesDL977 / DL400Axel-exclusive $638.002026-10-29T00:52:48Z
2026-12-18 → 2026-12-22Delta Air LinesDL977 / DL400Axel-exclusive $638.002026-10-29T00:52:48Z
2026-12-18 → 2026-12-23Delta Air LinesDL977 / DL400Axel-exclusive $638.002026-10-29T00:52:48Z
2026-12-18 → 2026-12-24Delta Air LinesDL977 / DL977Axel-exclusive $638.002026-10-29T00:52:48Z
2026-12-18 → 2026-12-25Delta Air LinesDL977 / DL400Axel-exclusive $638.002026-10-29T00:52:48Z
2026-12-18 → 2026-12-26Delta Air LinesDL977 / DL400Axel-exclusive $638.002026-10-29T00:52:48Z
2026-12-18 → 2026-12-27Delta Air LinesDL977 / DL400Axel-exclusive $638.002026-10-29T00:52:48Z
2026-12-18 → 2026-12-28Delta Air LinesDL977 / DL977Axel-exclusive $638.002026-10-29T00:52:48Z
2026-12-18 → 2026-12-29Delta Air LinesDL977 / DL400Axel-exclusive $638.002026-10-29T00:52:48Z
2026-12-18 → 2026-12-30Delta Air LinesDL977 / DL977Axel-exclusive $638.002026-10-29T00:52:48Z
2026-12-18 → 2026-12-31Delta Air LinesDL977 / DL977Axel-exclusive $638.002026-10-29T00:52:48Z
2026-12-18 → 2027-01-01Delta Air LinesDL977 / DL400Axel-exclusive $620.402026-10-29T00:52:48Z

Hotels in San Francisco for these trips

Hotels: under a trip, hotels in San Francisco for exactly those nights: the lowest 3★, 4★, 5★ stay totals among the city's featured hotels, Axel's price for 2 adults in 1 room, each opening that hotel's page for those dates with the rooms and the booking link.

All hotels in San Francisco

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

2026-12-18 · one way · Axel-exclusive $333.50

  • Delta Air Lines DL977: BOS 2026-12-18 07:50:00 → SFO 2026-12-18 11:41:00; nonstop; 411 minutes. Local airport times.

2026-12-18 → 2026-12-19 · Axel-exclusive $638.00

  • Delta Air Lines DL977: BOS 2026-12-18 07:50:00 → SFO 2026-12-18 11:41:00; nonstop; 411 minutes. Local airport times.
  • Delta Air Lines DL400: SFO 2026-12-19 07:20:00 → BOS 2026-12-19 15:55:00; nonstop; 335 minutes. Local airport times.

2026-12-18 → 2026-12-20 · Axel-exclusive $638.00

  • Delta Air Lines DL977: BOS 2026-12-18 07:50:00 → SFO 2026-12-18 11:41:00; nonstop; 411 minutes. Local airport times.
  • Delta Air Lines DL400: SFO 2026-12-20 07:00:00 → BOS 2026-12-20 15:30:00; nonstop; 330 minutes. Local airport times.

2026-12-18 → 2026-12-21 · Axel-exclusive $638.00

  • Delta Air Lines DL977: BOS 2026-12-18 07:50:00 → SFO 2026-12-18 11:41:00; nonstop; 411 minutes. Local airport times.
  • Delta Air Lines DL400: SFO 2026-12-21 07:00:00 → BOS 2026-12-21 15:34:00; nonstop; 334 minutes. Local airport times.

2026-12-18 → 2026-12-22 · Axel-exclusive $638.00

  • Delta Air Lines DL977: BOS 2026-12-18 07:50:00 → SFO 2026-12-18 11:41:00; nonstop; 411 minutes. Local airport times.
  • Delta Air Lines DL400: SFO 2026-12-22 07:00:00 → BOS 2026-12-22 15:30:00; nonstop; 330 minutes. Local airport times.

2026-12-18 → 2026-12-24 · Axel-exclusive $638.00

  • Delta Air Lines DL977: BOS 2026-12-18 07:50:00 → SFO 2026-12-18 11:41:00; nonstop; 411 minutes. Local airport times.
  • Delta Air Lines DL977: SFO 2026-12-24 13:05:00 → BOS 2026-12-24 21:40:00; nonstop; 335 minutes. Local airport times.

2026-12-18 → 2026-12-25 · Axel-exclusive $638.00

  • Delta Air Lines DL977: BOS 2026-12-18 07:50:00 → SFO 2026-12-18 11:41:00; nonstop; 411 minutes. Local airport times.
  • Delta Air Lines DL400: SFO 2026-12-25 07:00:00 → BOS 2026-12-25 15:34:00; nonstop; 334 minutes. Local airport times.

2026-12-18 → 2026-12-26 · Axel-exclusive $638.00

  • Delta Air Lines DL977: BOS 2026-12-18 07:50:00 → SFO 2026-12-18 11:41:00; nonstop; 411 minutes. Local airport times.
  • Delta Air Lines DL400: SFO 2026-12-26 07:20:00 → BOS 2026-12-26 15:55:00; nonstop; 335 minutes. Local airport times.

2026-12-18 → 2026-12-28 · Axel-exclusive $638.00

  • Delta Air Lines DL977: BOS 2026-12-18 07:50:00 → SFO 2026-12-18 11:41:00; nonstop; 411 minutes. Local airport times.
  • Delta Air Lines DL977: SFO 2026-12-28 13:05:00 → BOS 2026-12-28 21:40:00; nonstop; 335 minutes. Local airport times.

2026-12-18 → 2026-12-29 · Axel-exclusive $638.00

  • Delta Air Lines DL977: BOS 2026-12-18 07:50:00 → SFO 2026-12-18 11:41:00; nonstop; 411 minutes. Local airport times.
  • Delta Air Lines DL400: SFO 2026-12-29 07:00:00 → BOS 2026-12-29 15:30:00; nonstop; 330 minutes. Local airport times.

2026-12-18 → 2026-12-30 · Axel-exclusive $638.00

  • Delta Air Lines DL977: BOS 2026-12-18 07:50:00 → SFO 2026-12-18 11:41:00; nonstop; 411 minutes. Local airport times.
  • Delta Air Lines DL977: SFO 2026-12-30 13:05:00 → BOS 2026-12-30 21:40:00; nonstop; 335 minutes. Local airport times.

2026-12-18 → 2027-01-01 · Axel-exclusive $620.40

  • Delta Air Lines DL977: BOS 2026-12-18 07:50:00 → SFO 2026-12-18 11:41:00; nonstop; 411 minutes. Local airport times.
  • Delta Air Lines DL400: SFO 2027-01-01 07:00:00 → BOS 2027-01-01 15:34:00; nonstop; 334 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: Boston (BOS) to San Francisco (SFO) · Dec 18, 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: the lowest 3★, 4★ and 5★ stay totals for 2 adults in 1 room, each linking to that hotel's page for those dates.
  • 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. 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.