Frontier AirlinesDepart16:30
Sat, Dec 5PHX → SAN
1h 17m · Direct
$20one way, per person
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- Cheapest fare
- $20
- Cheapest month
- December
- Direct flights
- Yes
- Flight time
- 1h 17m
Frontier Airlines · Sat, Dec 5
from $20
Frontier Airlines
480 km
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Cheapest month to fly from Phoenix to San Diego
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in December 2026
The lowest fares we've seen for each day, cheapest first.
Frontier AirlinesPlan the rest of your trip to San Diego
Where to stay, what to do and getting around, from our travel partners.
About flights from Phoenix to San Diego
Phoenix (PHX) and San Diego (SAN) are about 480 km apart. Direct flights take around 1h 17m, and recent direct fares were with Frontier Airlines. Over the next few months, one-way fares start from $20, and December 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from Phoenix to San Diego?
The cheapest one-way fare we've seen recently is $20 with Frontier Airlines, departing Saturday, December 5, 2026. Over the coming months, the lowest fare in each month ranges from $20 to $81.
What is the cheapest month to fly from Phoenix to San Diego?
December 2026 currently has the lowest fares, from $20 one way.
Are there direct flights from Phoenix to San Diego?
Yes. Recent direct fares were with Frontier Airlines.
How long is the flight from Phoenix to San Diego?
A direct flight takes about 1h 17m. Phoenix and San Diego are around 480 km apart.
Which airlines fly from Phoenix to San Diego?
Recent fares on this route were with Frontier Airlines.
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