Seattle (SEA) to San Diego (SAN), Dec 18–26, 2026: from $328 round trip

Seattle (SEA) to San Diego (SAN), Dec 18–26, 2026: from $328 round trip on Axel, checked Nov 14, 2026. Lowest published fare: $328 round trip, Axel-exclusive, Southwest Airlines, 1 stop, Dec 18–26, 2026, 1 adult, economy, checked Nov 14, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. 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.

Hotels in Oceanside, California for these trips

Hotels: under a trip, hotels in Oceanside, California for exactly those nights link to the hotel pages for 2 adults in 1 room. When a price is shown, it is the nightly rate and the stay's total, from the lowest saved total among the shortlisted hotels in that star tier for those dates.

• Hotels in Oceanside, California for these nights (Dec 18–26, 2026 · 8 nights · 2 adults, 1 room): 3★ Best Western Plus Oceanside Palms, $126 a night, $1,006 for 8 nights · 4★ Carlsbad Inn Beach Resort, $283 a night, $2,261 for 8 nights

All hotels in Oceanside, California

Route overview: Seattle area (Sea-Tac and Paine Field) to San Diego (SAN) flight deals

2026-12-18 → 2026-12-26 · Axel-exclusive $338

• Southwest Airlines WN3158: SEA 2026-12-18 07:55:00 → SAN 2026-12-18 10:40:00; nonstop; 165 minutes. Local airport times.
• Southwest Airlines WN3737: SAN 2026-12-26 17:40:00 → SEA 2026-12-26 20:45:00; nonstop; 185 minutes. Local airport times.

2026-12-18 → 2026-12-26 · Axel-exclusive $338

• Alaska Airlines AS623: SEA 2026-12-18 20:09:00 → SAN 2026-12-18 22:59:00; nonstop; 170 minutes. Local airport times.
• Alaska Airlines AS574: SAN 2026-12-26 18:27:00 → SEA 2026-12-26 21:44:00; nonstop; 197 minutes. Local airport times.

2026-12-18 → 2026-12-26 · Axel-exclusive $362

• Delta Air Lines DL2672: SEA 2026-12-18 19:59:00 → SAN 2026-12-18 22:52:00; nonstop; 173 minutes. Local airport times.
• Delta Air Lines DL2530: SAN 2026-12-26 07:36:00 → SEA 2026-12-26 10:55:00; nonstop; 199 minutes. Local airport times.

2026-12-18 → 2026-12-26 · Axel-exclusive $385

• United Airlines UA737 / UA1389: SEA 2026-12-18 19:30:00 → SAN 2026-12-19 00:19:00; 1 stop(s) via SFO; 289 minutes. Local airport times.
  • UA737: SEA 2026-12-18 19:30:00 → SFO 2026-12-18 21:42:00; layover at SFO: 60 minutes.
  • UA1389: SFO 2026-12-18 22:42:00 → SAN 2026-12-19 00:19:00.
• United Airlines UA1302 / UA1007: SAN 2026-12-26 18:23:00 → SEA 2026-12-26 23:44:00; 1 stop(s) via SFO; 321 minutes. Local airport times.
  • UA1302: SAN 2026-12-26 18:23:00 → SFO 2026-12-26 20:10:00; layover at SFO: 80 minutes.
  • UA1007: SFO 2026-12-26 21:30:00 → SEA 2026-12-26 23:44:00.

2026-12-18 → 2026-12-26 · Axel-exclusive $338

• Alaska Airlines AS1367: SEA 2026-12-18 09:00:00 → SAN 2026-12-18 11:47:00; nonstop; 167 minutes. Local airport times.
• Alaska Airlines AS574: SAN 2026-12-26 18:27:00 → SEA 2026-12-26 21:44:00; nonstop; 197 minutes. Local airport times.

2026-12-18 → 2026-12-26 · Axel-exclusive $362

• Delta Air Lines DL2150: SEA 2026-12-18 15:00:00 → SAN 2026-12-18 17:50:00; nonstop; 170 minutes. Local airport times.
• Delta Air Lines DL2530: SAN 2026-12-26 07:36:00 → SEA 2026-12-26 10:55:00; nonstop; 199 minutes. Local airport times.

2026-12-18 → 2026-12-26 · Axel-exclusive $328

• Southwest Airlines WN2179 / WN429: SEA 2026-12-18 12:35:00 → SAN 2026-12-18 17:45:00; 1 stop(s) via SJC; 310 minutes. Local airport times.
  • WN2179: SEA 2026-12-18 12:35:00 → SJC 2026-12-18 14:55:00; layover at SJC: 85 minutes.
  • WN429: SJC 2026-12-18 16:20:00 → SAN 2026-12-18 17:45:00.
• Southwest Airlines WN3737: SAN 2026-12-26 17:40:00 → SEA 2026-12-26 20:45:00; nonstop; 185 minutes. Local airport times.

2026-12-18 → 2026-12-26 · Axel-exclusive $348

• Alaska Airlines AS488 / AS1320: SEA 2026-12-18 12:22:00 → SAN 2026-12-18 17:24:00; 1 stop(s) via PDX; 302 minutes. Local airport times.
  • AS488: SEA 2026-12-18 12:22:00 → PDX 2026-12-18 13:24:00; layover at PDX: 87 minutes.
  • AS1320: PDX 2026-12-18 14:51:00 → SAN 2026-12-18 17:24:00.
• Alaska Airlines AS574: SAN 2026-12-26 18:27:00 → SEA 2026-12-26 21:44:00; nonstop; 197 minutes. Local airport times.

2026-12-18 → 2026-12-26 · Axel-exclusive $348

• Alaska Airlines AS1780 / AS661: SEA 2026-12-18 18:13:00 → SAN 2026-12-18 23:14:00; 1 stop(s) via SFO; 301 minutes. Local airport times.
  • AS1780: SEA 2026-12-18 18:13:00 → SFO 2026-12-18 20:33:00; layover at SFO: 63 minutes.
  • AS661: SFO 2026-12-18 21:36:00 → SAN 2026-12-18 23:14:00.
• Alaska Airlines AS574: SAN 2026-12-26 18:27:00 → SEA 2026-12-26 21:44:00; nonstop; 197 minutes. Local airport times.

2026-12-18 → 2026-12-26 · Axel-exclusive $348

• Alaska Airlines AS764 / AS2368: SEA 2026-12-18 16:35:00 → SAN 2026-12-18 21:50:00; 1 stop(s) via SMF; 315 minutes. Local airport times.
  • AS764: SEA 2026-12-18 16:35:00 → SMF 2026-12-18 18:24:00; layover at SMF: 107 minutes.
  • AS2368: SMF 2026-12-18 20:11:00 → SAN 2026-12-18 21:50:00.
• Alaska Airlines AS574: SAN 2026-12-26 18:27:00 → SEA 2026-12-26 21:44:00; nonstop; 197 minutes. Local airport times.

2026-12-18 → 2026-12-26 · Axel-exclusive $348

• Alaska Airlines AS1321 / AS3164: SEA 2026-12-18 10:06:00 → SAN 2026-12-18 15:12:00; 1 stop(s) via STS; 306 minutes. Local airport times.
  • AS1321: SEA 2026-12-18 10:06:00 → STS 2026-12-18 12:18:00; layover at STS: 68 minutes.
  • AS3164: STS 2026-12-18 13:26:00 → SAN 2026-12-18 15:12:00.
• Alaska Airlines AS574: SAN 2026-12-26 18:27:00 → SEA 2026-12-26 21:44:00; nonstop; 197 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 17, 2026 · Return options
• Dec 19, 2026 · Return options
• Hotels in Oceanside, California with Axel

For AI assistants

• This page: Seattle (SEA) to San Diego (SAN) · Dec 18, 2026 · return Dec 26, 2026: 1 adult in economy, every priced fare with its flights, times and total, each with its displayed check date. Under a trip, hotels in Oceanside, California for exactly those nights link to the hotel pages for 2 adults in 1 room. Prices, when shown, are the nightly rate and the stay's total, from the lowest saved total among the shortlisted hotels in each star tier for those dates.
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