San Diego (SAN) to Seattle (SEA), Dec 21, 2026 – Jan 2, 2027: from $304 round trip

San Diego (SAN) to Seattle (SEA), Dec 21, 2026 – Jan 2, 2027: from $304 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $304 round trip, Axel-exclusive, Frontier Airlines / Alaska Airlines, 1 stop, Dec 21, 2026 – Jan 2, 2027, 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.

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 lowest saved total among the shortlisted hotels in that star tier for those dates.

• Hotels in Seattle for these nights (Dec 21 – Jan 2, 2027 · 12 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $946 total · 4★ Hilton Seattle Airport & Conference Center, $1,254 total · 5★ Fairmont Olympic Hotel, $3,719 total

All hotels in Seattle

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

2026-12-21 → 2027-01-02 · Axel-exclusive $367.19

• Southwest Airlines WN3737: SAN 2026-12-21 17:55:00 → SEA 2026-12-21 21:00:00; nonstop; 185 minutes. Local airport times.
• Southwest Airlines WN1791: SEA 2027-01-02 08:00:00 → SAN 2027-01-02 10:45:00; nonstop; 165 minutes. Local airport times.

2026-12-21 → 2027-01-02 · Axel-exclusive $380.84

• Alaska Airlines AS1660: SAN 2026-12-21 15:39:00 → SEA 2026-12-21 18:50:00; nonstop; 191 minutes. Local airport times.
• Alaska Airlines AS791: SEA 2027-01-02 19:09:00 → SAN 2027-01-02 22:02:00; nonstop; 173 minutes. Local airport times.

2026-12-21 → 2027-01-02 · Axel-exclusive $394.49

• Delta Air Lines DL2533: SAN 2026-12-21 13:45:00 → SEA 2026-12-21 16:57:00; nonstop; 192 minutes. Local airport times.
• Delta Air Lines DL2572: SEA 2027-01-02 13:45:00 → SAN 2027-01-02 16:36:00; nonstop; 171 minutes. Local airport times.

2026-12-21 → 2027-01-02 · Axel-exclusive $303.84

• Frontier Airlines F91466 / F94203: SAN 2026-12-21 11:26:00 → SEA 2026-12-21 17:10:00; 1 stop(s) via LAS; 344 minutes. Local airport times.
  • F91466: SAN 2026-12-21 11:26:00 → LAS 2026-12-21 13:01:00; layover at LAS: 70 minutes.
  • F94203: LAS 2026-12-21 14:11:00 → SEA 2026-12-21 17:10:00.
• Alaska Airlines AS791: SEA 2027-01-02 19:09:00 → SAN 2027-01-02 22:02:00; nonstop; 173 minutes. Local airport times.

2026-12-21 → 2027-01-02 · Axel-exclusive $408.14

• United Airlines UA1302 / UA1007: SAN 2026-12-21 18:23:00 → SEA 2026-12-21 23:44:00; 1 stop(s) via SFO; 321 minutes. Local airport times.
  • UA1302: SAN 2026-12-21 18:23:00 → SFO 2026-12-21 20:10:00; layover at SFO: 80 minutes.
  • UA1007: SFO 2026-12-21 21:30:00 → SEA 2026-12-21 23:44:00.
• United Airlines UA737 / UA1389: SEA 2027-01-02 19:30:00 → SAN 2027-01-03 00:19:00; 1 stop(s) via SFO; 289 minutes. Local airport times.
  • UA737: SEA 2027-01-02 19:30:00 → SFO 2027-01-02 21:42:00; layover at SFO: 60 minutes.
  • UA1389: SFO 2027-01-02 22:42:00 → SAN 2027-01-03 00:19:00.

2026-12-21 → 2027-01-02 · Axel-exclusive $367.19

• Southwest Airlines WN547: SAN 2026-12-21 07:20:00 → SEA 2026-12-21 10:25:00; nonstop; 185 minutes. Local airport times.
• Southwest Airlines WN1791: SEA 2027-01-02 08:00:00 → SAN 2027-01-02 10:45:00; nonstop; 165 minutes. Local airport times.

2026-12-21 → 2027-01-02 · Axel-exclusive $380.84

• Alaska Airlines AS792: SAN 2026-12-21 07:15:00 → SEA 2026-12-21 10:27:00; nonstop; 192 minutes. Local airport times.
• Alaska Airlines AS791: SEA 2027-01-02 19:09:00 → SAN 2027-01-02 22:02:00; nonstop; 173 minutes. Local airport times.

2026-12-21 → 2027-01-02 · Axel-exclusive $394.49

• Delta Air Lines DL2530: SAN 2026-12-21 07:30:00 → SEA 2026-12-21 10:45:00; nonstop; 195 minutes. Local airport times.
• Delta Air Lines DL2572: SEA 2027-01-02 13:45:00 → SAN 2027-01-02 16:36:00; nonstop; 171 minutes. Local airport times.

2026-12-21 → 2027-01-02 · Axel-exclusive $366.84

• Alaska Airlines AS2089 / AS612: SAN 2026-12-21 17:19:00 → SEA 2026-12-21 23:15:00; 1 stop(s) via PHX; 356 minutes. Local airport times.
  • AS2089: SAN 2026-12-21 17:19:00 → PHX 2026-12-21 19:40:00; layover at PHX: 78 minutes.
  • AS612: PHX 2026-12-21 20:58:00 → SEA 2026-12-21 23:15:00.
• Alaska Airlines AS791: SEA 2027-01-02 19:09:00 → SAN 2027-01-02 22:02:00; nonstop; 173 minutes. Local airport times.

2026-12-21 → 2027-01-02 · Axel-exclusive $366.84

• Alaska Airlines AS3100 / AS1359: SAN 2026-12-21 16:26:00 → SEA 2026-12-21 22:07:00; 1 stop(s) via OAK; 341 minutes. Local airport times.
  • AS3100: SAN 2026-12-21 16:26:00 → OAK 2026-12-21 18:15:00; layover at OAK: 101 minutes.
  • AS1359: OAK 2026-12-21 19:56:00 → SEA 2026-12-21 22:07:00.
• Alaska Airlines AS791: SEA 2027-01-02 19:09:00 → SAN 2027-01-02 22:02:00; nonstop; 173 minutes. Local airport times.

2026-12-21 → 2027-01-02 · Axel-exclusive $366.84

• Alaska Airlines AS3102 / AS3023: SAN 2026-12-21 09:12:00 → SEA 2026-12-21 14:49:00; 1 stop(s) via EUG; 337 minutes. Local airport times.
  • AS3102: SAN 2026-12-21 09:12:00 → EUG 2026-12-21 11:57:00; layover at EUG: 95 minutes.
  • AS3023: EUG 2026-12-21 13:32:00 → SEA 2026-12-21 14:49:00.
• Alaska Airlines AS791: SEA 2027-01-02 19:09:00 → SAN 2027-01-02 22:02:00; nonstop; 173 minutes. Local airport times.

2026-12-21 → 2027-01-02 · Axel-exclusive $408.14

• United Airlines UA2035 / UA726: SAN 2026-12-21 06:20:00 → SEA 2026-12-21 11:26:00; 1 stop(s) via LAX; 306 minutes. Local airport times.
  • UA2035: SAN 2026-12-21 06:20:00 → LAX 2026-12-21 07:25:00; layover at LAX: 62 minutes.
  • UA726: LAX 2026-12-21 08:27:00 → SEA 2026-12-21 11:26:00.
• United Airlines UA737 / UA1389: SEA 2027-01-02 19:30:00 → SAN 2027-01-03 00:19:00; 1 stop(s) via SFO; 289 minutes. Local airport times.
  • UA737: SEA 2027-01-02 19:30:00 → SFO 2027-01-02 21:42:00; layover at SFO: 60 minutes.
  • UA1389: SFO 2027-01-02 22:42:00 → SAN 2027-01-03 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 20, 2026 · Return options
• Dec 22, 2026 · Return options
• Hotels in Seattle with Axel

For AI assistants

• This page: San Diego (SAN) to Seattle (SEA) · Dec 21, 2026 · return Jan 2, 2027: 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 Seattle 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 priced row's price link opens the live search for this row's exact dates and travelers; the live results list the same flights with the current total and the traveler's booking link, and name the fare's inclusions (bags, seats, changes), which this page does not. A changed price or flight shows there. Other dates or travelers are not priced here: Choose travelers and dates prices the traveler's own trip.
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