Boston (BOS) to San Francisco (SFO), Dec 15–17, 2026: from $350 round trip

Boston (BOS) to San Francisco (SFO), Dec 15–17, 2026: from $350 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $350 round trip, Axel-exclusive, Southwest Airlines, 1 stop, Dec 15–17, 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. Carry-on included. Basic economy may apply.

See flights for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the complete itinerary there.

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

2026-12-15 → 2026-12-17 · Axel-exclusive $400.00

• JetBlue Airways B62233: BOS 2026-12-15 11:45:00 → SFO 2026-12-15 15:33:00; nonstop; 408 minutes. Local airport times.
• JetBlue Airways B61834: SFO 2026-12-17 06:00:00 → BOS 2026-12-17 14:31:00; nonstop; 331 minutes. Local airport times.

2026-12-15 → 2026-12-17 · Axel-exclusive $440.00

• Delta Air Lines DL2919: BOS 2026-12-15 20:46:00 → SFO 2026-12-16 00:41:00; nonstop; 415 minutes. Local airport times.
• Delta Air Lines DL400: SFO 2026-12-17 07:00:00 → BOS 2026-12-17 15:34:00; nonstop; 334 minutes. Local airport times.

2026-12-15 → 2026-12-17 · Axel-exclusive $510.00

• United Airlines UA2400: BOS 2026-12-15 18:01:00 → SFO 2026-12-15 21:50:00; nonstop; 409 minutes. Local airport times.
• United Airlines UA1665: SFO 2026-12-17 23:20:00 → BOS 2026-12-18 07:57:00; nonstop; 337 minutes. Local airport times.

2026-12-15 → 2026-12-17 · Axel-exclusive $350.00

• Southwest Airlines WN4995 / WN786: BOS 2026-12-15 07:10:00 → SFO 2026-12-15 12:45:00; 1 stop(s) via MDW; 515 minutes. Local airport times.
  • WN4995: BOS 2026-12-15 07:10:00 → MDW 2026-12-15 08:55:00; layover at MDW: 60 minutes.
  • WN786: MDW 2026-12-15 09:55:00 → SFO 2026-12-15 12:45:00.
• Southwest Airlines WN2331 / WN2900: SFO 2026-12-17 06:00:00 → BOS 2026-12-17 16:20:00; 1 stop(s) via MDW; 440 minutes. Local airport times.
  • WN2331: SFO 2026-12-17 06:00:00 → MDW 2026-12-17 12:15:00; layover at MDW: 60 minutes.
  • WN2900: MDW 2026-12-17 13:15:00 → BOS 2026-12-17 16:20:00.

2026-12-15 → 2026-12-17 · Axel-exclusive $360.00

• American Airlines AA1243 / AS465: BOS 2026-12-15 09:00:00 → SFO 2026-12-15 15:16:00; 1 stop(s) via LAX; 556 minutes. Local airport times.
  • AA1243: BOS 2026-12-15 09:00:00 → LAX 2026-12-15 12:32:00; layover at LAX: 78 minutes.
  • AS465: LAX 2026-12-15 13:50:00 → SFO 2026-12-15 15:16:00.
• American Airlines AA3119 / AA2089: SFO 2026-12-17 23:46:00 → BOS 2026-12-18 10:32:00; 1 stop(s) via ORD; 466 minutes. Local airport times.
  • AA3119: SFO 2026-12-17 23:46:00 → ORD 2026-12-18 05:59:00; layover at ORD: 60 minutes.
  • AA2089: ORD 2026-12-18 06:59:00 → BOS 2026-12-18 10:32:00.

2026-12-15 → 2026-12-17 · Axel-exclusive $400.00

• JetBlue Airways B61833: BOS 2026-12-15 18:30:00 → SFO 2026-12-15 22:20:00; nonstop; 410 minutes. Local airport times.
• JetBlue Airways B61834: SFO 2026-12-17 06:00:00 → BOS 2026-12-17 14:31:00; nonstop; 331 minutes. Local airport times.

2026-12-15 → 2026-12-17 · Axel-exclusive $440.00

• Delta Air Lines DL1655: BOS 2026-12-15 16:50:00 → SFO 2026-12-15 20:38:00; nonstop; 408 minutes. Local airport times.
• Delta Air Lines DL400: SFO 2026-12-17 07:00:00 → BOS 2026-12-17 15:34:00; nonstop; 334 minutes. Local airport times.

2026-12-15 → 2026-12-17 · Axel-exclusive $510.00

• United Airlines UA2441: BOS 2026-12-15 06:00:00 → SFO 2026-12-15 09:51:00; nonstop; 411 minutes. Local airport times.
• United Airlines UA1665: SFO 2026-12-17 23:20:00 → BOS 2026-12-18 07:57:00; nonstop; 337 minutes. Local airport times.

2026-12-15 → 2026-12-17 · Axel-exclusive $350.00

• Southwest Airlines WN1537 / WN2104: BOS 2026-12-15 05:00:00 → SFO 2026-12-15 10:30:00; 1 stop(s) via DEN; 510 minutes. Local airport times.
  • WN1537: BOS 2026-12-15 05:00:00 → DEN 2026-12-15 07:40:00; layover at DEN: 60 minutes.
  • WN2104: DEN 2026-12-15 08:40:00 → SFO 2026-12-15 10:30:00.
• Southwest Airlines WN2331 / WN2900: SFO 2026-12-17 06:00:00 → BOS 2026-12-17 16:20:00; 1 stop(s) via MDW; 440 minutes. Local airport times.
  • WN2331: SFO 2026-12-17 06:00:00 → MDW 2026-12-17 12:15:00; layover at MDW: 60 minutes.
  • WN2900: MDW 2026-12-17 13:15:00 → BOS 2026-12-17 16:20:00.

2026-12-15 → 2026-12-17 · Axel-exclusive $410.00

• Delta Air Lines DL1127 / DL2809: BOS 2026-12-15 15:05:00 → SFO 2026-12-15 20:49:00; 1 stop(s) via MSP; 524 minutes. Local airport times.
  • DL1127: BOS 2026-12-15 15:05:00 → MSP 2026-12-15 17:25:00; layover at MSP: 64 minutes.
  • DL2809: MSP 2026-12-15 18:29:00 → SFO 2026-12-15 20:49:00.
• Delta Air Lines DL400: SFO 2026-12-17 07:00:00 → BOS 2026-12-17 15:34:00; nonstop; 334 minutes. Local airport times.

2026-12-15 → 2026-12-17 · Axel-exclusive $410.00

• Delta Air Lines DL2222 / DL442: BOS 2026-12-15 13:04:00 → SFO 2026-12-15 19:16:00; 1 stop(s) via DTW; 552 minutes. Local airport times.
  • DL2222: BOS 2026-12-15 13:04:00 → DTW 2026-12-15 15:19:00; layover at DTW: 100 minutes.
  • DL442: DTW 2026-12-15 16:59:00 → SFO 2026-12-15 19:16:00.
• Delta Air Lines DL400: SFO 2026-12-17 07:00:00 → BOS 2026-12-17 15:34:00; nonstop; 334 minutes. Local airport times.

2026-12-15 → 2026-12-17 · Axel-exclusive $475.00

• United Airlines UA2098 / UA1434: BOS 2026-12-15 09:30:00 → SFO 2026-12-15 15:44:00; 1 stop(s) via IAD; 554 minutes. Local airport times.
  • UA2098: BOS 2026-12-15 09:30:00 → IAD 2026-12-15 11:15:00; layover at IAD: 80 minutes.
  • UA1434: IAD 2026-12-15 12:35:00 → SFO 2026-12-15 15:44:00.
• United Airlines UA1665: SFO 2026-12-17 23:20:00 → BOS 2026-12-18 07:57:00; nonstop; 337 minutes. Local airport times.

Travelers: prices on this page are totals for 1 adult. For a different party, open this trip for 2 adults · 3 adults · 4 adults · 2 adults + 1 child · 2 adults + 2 children; each link opens AI flight search for these dates and those travelers, and the customer link to share comes from those results.

Explore this route

• All dates for this route
• Dec 14, 2026 · Return options
• Dec 16, 2026 · Return options
• Hotels in San Francisco with Axel

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