−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 →
Southwest, American, Alaska and Frontier fly nonstop from Phoenix to San Diego. The flight takes about 1h 20m.
| From | Phoenix Sky Harbor (PHX) |
|---|---|
| To | San Diego International (SAN) and Carlsbad (CLD) |
| Nonstop airlines | San Diego: Southwest, American, Alaska, Frontier Carlsbad (North County): American |
| Flight time | About 1h 20m |
| Cheapest month | February (median about $123 round trip) |
| Most expensive | June and July |
| Typical round trip | $101 to $240 |
| Best time to book | About 7 weeks ahead |
| Google Flights typical price | About $78 round trip, for the dates we checked recently |
February is usually the cheapest month to fly from Phoenix to San Diego, with a median round trip around $123. June and July cost the most, around $207 and $198. Most round trips have cost $101 to $240.
Booking about 7 weeks before departure has saved the most on this route, about 61% compared with booking in the last two weeks.
Those are typical prices. Our daily scan looks for fares well below them: when one shows up from PHX, it appears at the top of this page and goes out by email.
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San Diego: Southwest, American, Alaska, Frontier; Carlsbad (North County): American. Schedules change, so check before booking.
About 1h 20m.
February is usually the cheapest month to fly from Phoenix to San Diego, with a median round trip around $123. June and July cost the most, around $207 and $198. Most round trips have cost $101 to $240.
Booking about 7 weeks before departure has saved the most on this route, about 61% compared with booking in the last two weeks.
Be flexible on dates, compare the nearby airports listed above, and watch for fare drops. Our free newsletter checks fares from PHX every morning and only sends fares at least 20% below the typical price for that route and dates.
Prices are round-trip medians over the past 12 months from KAYAK route data, checked October 2026. Nonstop airlines from Phoenix Sky Harbor and airline schedules as of October 2026. Fares and schedules change, so confirm before you book.