San Diego (SAN) to Seattle (SEA), Dec 21–30, 2026: from $314 round trip

San Diego (SAN) to Seattle (SEA), Dec 21–30, 2026: from $314 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $314 round trip, Axel-exclusive, Frontier Airlines / Alaska Airlines, 1 stop, Dec 21–30, 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. 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 21–30, 2026 · 9 nights · 2 adults, 1 room): 3★ The Maxwell Hotel - A Staypineapple Hotel · 4★ The Sound Hotel Seattle Belltown, Tapestry Collection by Hilton · 5★ Four Seasons Hotel Seattle

All hotels in Seattle

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

2026-12-21 → 2026-12-30 · Axel-exclusive $376.60

• 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 2026-12-30 08:00:00 → SAN 2026-12-30 10:45:00; nonstop; 165 minutes. Local airport times.

2026-12-21 → 2026-12-30 · Axel-exclusive $390.60

• 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 AS254: SEA 2026-12-30 21:09:00 → SAN 2026-12-30 23:59:00; nonstop; 170 minutes. Local airport times.

2026-12-21 → 2026-12-30 · Axel-exclusive $404.60

• 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 2026-12-30 11:55:00 → SAN 2026-12-30 14:51:00; nonstop; 176 minutes. Local airport times.

2026-12-21 → 2026-12-30 · Axel-exclusive $313.60

• 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 AS254: SEA 2026-12-30 21:09:00 → SAN 2026-12-30 23:59:00; nonstop; 170 minutes. Local airport times.

2026-12-21 → 2026-12-30 · Axel-exclusive $418.60

• 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 2026-12-30 19:30:00 → SAN 2026-12-31 00:19:00; 1 stop(s) via SFO; 289 minutes. Local airport times.
  • UA737: SEA 2026-12-30 19:30:00 → SFO 2026-12-30 21:42:00; layover at SFO: 60 minutes.
  • UA1389: SFO 2026-12-30 22:42:00 → SAN 2026-12-31 00:19:00.

2026-12-21 → 2026-12-30 · Axel-exclusive $376.60

• 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 2026-12-30 08:00:00 → SAN 2026-12-30 10:45:00; nonstop; 165 minutes. Local airport times.

2026-12-21 → 2026-12-30 · Axel-exclusive $390.60

• 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 AS254: SEA 2026-12-30 21:09:00 → SAN 2026-12-30 23:59:00; nonstop; 170 minutes. Local airport times.

2026-12-21 → 2026-12-30 · Axel-exclusive $404.60

• 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 2026-12-30 11:55:00 → SAN 2026-12-30 14:51:00; nonstop; 176 minutes. Local airport times.

2026-12-21 → 2026-12-30 · Axel-exclusive $376.60

• 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 AS254: SEA 2026-12-30 21:09:00 → SAN 2026-12-30 23:59:00; nonstop; 170 minutes. Local airport times.

2026-12-21 → 2026-12-30 · Axel-exclusive $376.60

• 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 AS254: SEA 2026-12-30 21:09:00 → SAN 2026-12-30 23:59:00; nonstop; 170 minutes. Local airport times.

2026-12-21 → 2026-12-30 · Axel-exclusive $376.60

• 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 AS254: SEA 2026-12-30 21:09:00 → SAN 2026-12-30 23:59:00; nonstop; 170 minutes. Local airport times.

2026-12-21 → 2026-12-30 · Axel-exclusive $418.60

• 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 2026-12-30 19:30:00 → SAN 2026-12-31 00:19:00; 1 stop(s) via SFO; 289 minutes. Local airport times.
  • UA737: SEA 2026-12-30 19:30:00 → SFO 2026-12-30 21:42:00; layover at SFO: 60 minutes.
  • UA1389: SFO 2026-12-30 22:42:00 → SAN 2026-12-31 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 Dec 30, 2026: 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.
• 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 San Diego to Seattle (SEA) 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.

Feedback (optional): Missing info · Axel issue