Seattle to San Diego (SAN): December 2026 flight deals
Compare trip dates and fares.
Round-trip fare examples
Observed September 17, 2026 (UTC). Search a trip for current prices and flight details.
Round-trip totals in USD for 1 adult · Economy.
| Destination | Trip dates | Days | Axel Member | Airline fare | Stops | Search |
|---|---|---|---|---|---|---|
| San Diego (SAN) | Dec 24–28, 2026 | 4 | $252 | $282 | 1 stop | Search for 1 adult · Dates · Travelers |
| San Diego (SAN) | Dec 24, 2026–Jan 3, 2027 | 10 | $273 | $307 | 1 stop | Search for 1 adult · Dates · Travelers |
| San Diego (SAN) | Dec 25–27, 2026 | 2 | $293 | $329 | 1 stop | Search for 1 adult · Dates · Travelers |
| San Diego (SAN) | Dec 25–28, 2026 | 3 | $263 | $296 | 1 stop | Search for 1 adult · Dates · Travelers |
| San Diego (SAN) | Dec 26–29, 2026 | 3 | $311 | $349 | 1 stop | Search for 1 adult · Dates · Travelers |
| San Diego (SAN) | Dec 26–31, 2026 | 5 | $327 | $363 | Nonstop | Search for 1 adult · Dates · Travelers |
| San Diego (SAN) | Dec 26, 2026–Jan 2, 2027 | 7 | $371 | $416 | 1 stop | Search for 1 adult · Dates · Travelers |
| San Diego (SAN) | Dec 27, 2026–Jan 3, 2027 | 7 | $361 | $406 | 1 stop | Search for 1 adult · Dates · Travelers |
| San Diego (SAN) | Dec 28–30, 2026 | 2 | $291 | $325 | 1 stop | Search for 1 adult · Dates · Travelers |
| San Diego (SAN) | Dec 29–31, 2026 | 2 | $282 | $317 | Nonstop | Search for 1 adult · Dates · Travelers |
| San Diego (SAN) | Dec 29, 2026–Jan 3, 2027 | 5 | $317 | $352 | 1 stop | Search for 1 adult · Dates · Travelers |
| San Diego (SAN) | Dec 30, 2026–Jan 3, 2027 | 4 | $273 | $307 | 1 stop | Search for 1 adult · Dates · Travelers |
Compare trip dates
Observed September 17, 2026 (UTC). Check current prices.
USD for the listed travelers.
1 adult · Complete round-trip totals · 5–9 days
Complete round-trip totals; both flights included.
| Trip / travelers | Dates | Flights | Axel Member | Airline fare | Next step |
|---|---|---|---|---|---|
| SEA–SAN · 1 adult | Dec 19–26, 2026 · 7 days | Out: Alaska Airlines · Nonstop · 2h 50m; Return: Alaska Airlines · 1 stop (SFO) · 4h 57m | $369 | $412 — round-trip total | Search for 1 adult · Change dates · Travelers / cabin |
| SEA–SAN · 1 adult | Dec 19–26, 2026 · 7 days | Out: Alaska Airlines · Nonstop · 2h 50m; Return: Alaska Airlines · Nonstop · 3h 11m | $430 | $483 — round-trip total | Search for 1 adult · Change dates · Travelers / cabin |
| SEA–SAN · 1 adult | Dec 19–24, 2026 · 5 days | Out: United Airlines · 1 stop (SFO) · 4h 52m; Return: United Airlines · 1 stop (SFO) · 10h 7m | $428 | $478 — round-trip total | Search for 1 adult · Change dates · Travelers / cabin |
| SEA–SAN · 1 adult | Dec 19–24, 2026 · 5 days | Out: United Airlines · 1 stop (SFO) · 4h 52m; Return: United Airlines · 1 stop (SFO) · 4h 55m | $574 | $638 — round-trip total | Search for 1 adult · Change dates · Travelers / cabin |
1 adult · Round-trip starting totals · 5–9 days
Starting totals are for the round trip. Choose a return flight to confirm the final total.
7 days between departure and return.
| Trip / travelers | Dates | Flights | Axel Member | Airline fare | Next step |
|---|---|---|---|---|---|
| SEA–SAN · 1 adult | Dec 19–26, 2026 | Out: Alaska Airlines · 1 stop (OAK) · 13h 58m | Round-trip starting total: $525 | Round-trip starting total: $583 — return selection pending | Search for 1 adult · Change dates · Travelers / cabin |
| SEA–SAN · 1 adult | Dec 19–26, 2026 | Out: Delta Air Lines · Nonstop · 2h 49m | Round-trip starting total: $1,156 | Round-trip starting total: $1,292 — return selection pending | Search for 1 adult · Change dates · Travelers / cabin |
Non-members can also book and save on airline fares. Live search shows prices with and without Membership. Optional Membership: $15 for the first month, then $10/month. Cancel anytime.
More flight comparisons from Seattle
Destinations and airports
Trips for specific dates
- Seattle to San Diego (SAN) — winter break: flights December 19–22, 2026
- Seattle to San Diego (SAN) — winter break: flights December 21–23, 2026
- Seattle to San Diego (SAN) — winter break: flights December 22–24, 2026
- Seattle to San Diego (SAN) — winter break: flights December 24–27, 2026
- Seattle to San Diego (SAN) — winter break: flights December 24–28, 2026
- Seattle to San Diego (SAN) — winter break: flights December 25–27, 2026
- Seattle to San Diego (SAN) — winter break: flights December 25–28, 2026
- Seattle to San Diego (SAN): flights December 1–3, 2026
Months and trip ideas
Browse this trip by month
AI assistants can follow these links to compare prices without an account, API key or connector. Flight search guide