−51%Verified fare
PHX → San Diego
United States · Frontier · Nonstop
$38 round trip
Usually ~$78 · Dec 2026
Dec 5 → Dec 12 · hotels from ~$165/nightSee it on Google Flights →
51% below the usual price for December 2026 travel from Phoenix Sky Harbor.
| Route | Phoenix (PHX) → San Diego (SAN), United States |
|---|---|
| Price | $38 round trip, economy, one adult |
| Usual price | About $78 (Google Flights' typical price for the same route and dates) |
| Saving | 51% below typical |
| Airline | Frontier |
| Stops | Nonstop |
| Travel month | December 2026 |
| Found | October 2026 |
We found this fare during our daily scan of flights from Phoenix Sky Harbor. It was 51% below what Google Flights considers a typical price for these dates, which is why it made our list. Round-trip fares from PHX to San Diego usually cost around $78.
Southwest, American, Alaska and Frontier fly nonstop from Phoenix to San Diego. The flight takes about 1h 20m.
Nonstop airlines, cheapest months and when to book: Phoenix to San Diego →
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