San Diego (SAN) to Seattle (SEA), Dec 20–28, 2026: from $321 round trip

San Diego (SAN) to Seattle (SEA), Dec 20–28, 2026: from $321 round trip on Axel, checked Nov 13, 2026. Lowest published fare: $321 round trip, Axel-exclusive, Frontier Airlines / Delta Air Lines, 1 stop, Dec 20–28, 2026, 1 adult, economy, checked Nov 13, 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 Seattle for these trips

Hotels: under a trip, hotels in Seattle 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 Seattle for these nights (Dec 20–28, 2026 · 8 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $78 a night, $623 for 8 nights · 4★ Hilton Seattle Airport & Conference Center, $105 a night, $840 for 8 nights · 5★ Fairmont Olympic Hotel, $290 a night, $2,322 for 8 nights

All hotels in Seattle

Route overview: San Diego to Seattle (SEA) flight deals

2026-12-20 → 2026-12-28 · Axel-exclusive $377

• Southwest Airlines WN547: SAN 2026-12-20 07:20:00 → SEA 2026-12-20 10:25:00; nonstop; 185 minutes. Local airport times.
• Southwest Airlines WN1791: SEA 2026-12-28 08:00:00 → SAN 2026-12-28 10:45:00; nonstop; 165 minutes. Local airport times.

2026-12-20 → 2026-12-28 · Axel-exclusive $391

• Alaska Airlines AS792: SAN 2026-12-20 09:32:00 → SEA 2026-12-20 12:47:00; nonstop; 195 minutes. Local airport times.
• Alaska Airlines AS765: SEA 2026-12-28 16:59:00 → SAN 2026-12-28 19:48:00; nonstop; 169 minutes. Local airport times.

2026-12-20 → 2026-12-28 · Axel-exclusive $405

• Delta Air Lines DL2530: SAN 2026-12-20 07:25:00 → SEA 2026-12-20 10:43:00; nonstop; 198 minutes. Local airport times.
• Delta Air Lines DL2572: SEA 2026-12-28 11:45:00 → SAN 2026-12-28 14:38:00; nonstop; 173 minutes. Local airport times.

2026-12-20 → 2026-12-28 · Axel-exclusive $321

• Frontier Airlines F91466 / F94203: SAN 2026-12-20 11:26:00 → SEA 2026-12-20 17:10:00; 1 stop(s) via LAS; 344 minutes. Local airport times.
  • F91466: SAN 2026-12-20 11:26:00 → LAS 2026-12-20 13:01:00; layover at LAS: 70 minutes.
  • F94203: LAS 2026-12-20 14:11:00 → SEA 2026-12-20 17:10:00.
• Delta Air Lines DL2572: SEA 2026-12-28 11:45:00 → SAN 2026-12-28 14:38:00; nonstop; 173 minutes. Local airport times.

2026-12-20 → 2026-12-28 · Axel-exclusive $419

• United Airlines UA2035 / UA726: SAN 2026-12-20 06:20:00 → SEA 2026-12-20 11:26:00; 1 stop(s) via LAX; 306 minutes. Local airport times.
  • UA2035: SAN 2026-12-20 06:20:00 → LAX 2026-12-20 07:25:00; layover at LAX: 62 minutes.
  • UA726: LAX 2026-12-20 08:27:00 → SEA 2026-12-20 11:26:00.
• United Airlines UA737 / UA1389: SEA 2026-12-28 19:30:00 → SAN 2026-12-29 00:19:00; 1 stop(s) via SFO; 289 minutes. Local airport times.
  • UA737: SEA 2026-12-28 19:30:00 → SFO 2026-12-28 21:42:00; layover at SFO: 60 minutes.
  • UA1389: SFO 2026-12-28 22:42:00 → SAN 2026-12-29 00:19:00.

2026-12-20 → 2026-12-28 · Axel-exclusive $391

• Alaska Airlines AS683: SAN 2026-12-20 13:56:00 → SEA 2026-12-20 17:07:00; nonstop; 191 minutes. Local airport times.
• Alaska Airlines AS765: SEA 2026-12-28 16:59:00 → SAN 2026-12-28 19:48:00; nonstop; 169 minutes. Local airport times.

2026-12-20 → 2026-12-28 · Axel-exclusive $405

• Delta Air Lines DL2533: SAN 2026-12-20 13:45:00 → SEA 2026-12-20 16:57:00; nonstop; 192 minutes. Local airport times.
• Delta Air Lines DL2572: SEA 2026-12-28 11:45:00 → SAN 2026-12-28 14:38:00; nonstop; 173 minutes. Local airport times.

2026-12-20 → 2026-12-28 · Axel-exclusive $363

• Southwest Airlines WN547: SAN 2026-12-20 09:45:00 → SEA 2026-12-20 13:00:00; nonstop; 195 minutes. Local airport times.
• Southwest Airlines WN2179 / WN429: SEA 2026-12-28 12:35:00 → SAN 2026-12-28 17:45:00; 1 stop(s) via SJC; 310 minutes. Local airport times.
  • WN2179: SEA 2026-12-28 12:35:00 → SJC 2026-12-28 14:55:00; layover at SJC: 85 minutes.
  • WN429: SJC 2026-12-28 16:20:00 → SAN 2026-12-28 17:45:00.

2026-12-20 → 2026-12-28 · Axel-exclusive $377

• Alaska Airlines AS3102 / AS3023: SAN 2026-12-20 09:12:00 → SEA 2026-12-20 14:49:00; 1 stop(s) via EUG; 337 minutes. Local airport times.
  • AS3102: SAN 2026-12-20 09:12:00 → EUG 2026-12-20 11:57:00; layover at EUG: 95 minutes.
  • AS3023: EUG 2026-12-20 13:32:00 → SEA 2026-12-20 14:49:00.
• Alaska Airlines AS765: SEA 2026-12-28 16:59:00 → SAN 2026-12-28 19:48:00; nonstop; 169 minutes. Local airport times.

2026-12-20 → 2026-12-28 · Axel-exclusive $377

• Alaska Airlines AS3100 / AS1359: SAN 2026-12-20 16:26:00 → SEA 2026-12-20 22:07:00; 1 stop(s) via OAK; 341 minutes. Local airport times.
  • AS3100: SAN 2026-12-20 16:26:00 → OAK 2026-12-20 18:15:00; layover at OAK: 101 minutes.
  • AS1359: OAK 2026-12-20 19:56:00 → SEA 2026-12-20 22:07:00.
• Alaska Airlines AS765: SEA 2026-12-28 16:59:00 → SAN 2026-12-28 19:48:00; nonstop; 169 minutes. Local airport times.

2026-12-20 → 2026-12-28 · Axel-exclusive $419

• United Airlines UA1302 / UA1007: SAN 2026-12-20 18:23:00 → SEA 2026-12-20 23:44:00; 1 stop(s) via SFO; 321 minutes. Local airport times.
  • UA1302: SAN 2026-12-20 18:23:00 → SFO 2026-12-20 20:10:00; layover at SFO: 80 minutes.
  • UA1007: SFO 2026-12-20 21:30:00 → SEA 2026-12-20 23:44:00.
• United Airlines UA737 / UA1389: SEA 2026-12-28 19:30:00 → SAN 2026-12-29 00:19:00; 1 stop(s) via SFO; 289 minutes. Local airport times.
  • UA737: SEA 2026-12-28 19:30:00 → SFO 2026-12-28 21:42:00; layover at SFO: 60 minutes.
  • UA1389: SFO 2026-12-28 22:42:00 → SAN 2026-12-29 00:19:00.

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 19, 2026 · Return options
• Dec 21, 2026 · Return options
• Hotels in Seattle with Axel

For AI assistants

• This page: San Diego (SAN) to Seattle (SEA) · Dec 20, 2026 · return Dec 28, 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 Seattle 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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