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Seattle → San Diego flights

SEA–SAN fares show a $164 median over 12 snapshots; bottom quartile sits near $148, but occasional spikes to $454 skew the range.

Typical fare is $164 — most quotes bunch far below $454 spikes

Key takeaways

Median fare is $164, with a bottom quartile (p25) of just $148 — most observed prices cluster tightly near the low end.
75% of fares were $170 or below, suggesting the $164 median is a realistic planning target.
High outlier of $454 pulls the spread to 207%, but this appears to be an isolated spike rather than the norm.
Sample size is thin at just 12 days, so treat day-of-week or carrier patterns as inconclusive.
No dominant carrier was identifiable from this data, limiting claims about airline-specific pricing behavior.

30-day price trend

SEA → SAN · cheapest cached fare per day · last 13 days · ↓ 19%

$133 low$454 high

See full numbers and stats on the SEA → SAN price history page.

The full picture

The SEA–SAN route shows a tight cluster of low fares with one dramatic outlier skewing the overall range. With a median of $164 and a p25–p75 band of $148–$170, most of the 12 observed snapshots sit well below $200 — the $454 high appears to be an anomaly rather than a representative price point, possibly tied to a single high-demand date or a last-minute snapshot.

Because this dataset only spans 12 days, we can't confidently identify a seasonal or booking-window pattern — that would require a fuller 30-day (or longer) rolling sample to see whether prices soften as departure approaches or firm up closer to travel. What we can say is that the bulk of fares cluster near the median, which is a reasonable anchor for budgeting: if you're seeing quotes above $200, you're likely paying a premium relative to this route's typical range.

No single carrier stood out clearly in the data, so we can't speak to airline-specific pricing quirks like fare-class resets or schedule changes. The honest caveat here is twofold: the sample size is small (12 days, well under the 30-day window we'd prefer for confidence), and the 207% spread is almost entirely driven by that one $454 outlier — exclude it and the route looks considerably more predictable. Treat the $164 median as a solid reference point, but don't read too much into the extremes without more data.

Ready to look at fares?

Search SEA → SAN on Aviasales →See the price history →

Related travel pages

Why we regenerated this article: Bottom quartile ↓ 13% ($170 → $148). We only rewrite when the underlying price index actually moves — stable weeks keep the previous take.

AI-authored from this route's 30-day price index. Article last regenerated Oct 10, 2026. Fares shift continuously — confirm at booking.