How far in advance should I book tickets for a flight with Frontier from Phoenix Sky Harbor Intl Airport to San Diego?

Generally, when trying to get a below average price for your ticket, try to book around 14 days before departure. For the cheapest possible price, our data suggests booking 37 days before departure.

Is Frontier the cheapest airline to fly with from Phoenix Sky Harbor Intl Airport to San Diego?

Yes, based on our data, Frontier is the cheapest airline to fly the route with an average price of $118 return. The next cheapest options are Spirit Airlines and Alaska Airlines, with return flights costing on average $127 and $146 respectively.

Does Frontier fly direct to San Diego from Phoenix Sky Harbor Intl Airport?

Yes, Frontier does offer direct flights for the route, with around 1 flights per week.

What’s the cheapest day of the week to fly from Phoenix Sky Harbor Intl Airport to San Diego with Frontier?

On average, the cheapest day of the week to fly from Phoenix Sky Harbor Intl Airport to San Diego with Frontier is Monday, when prices are around $19. The most expensive day is generally Saturday, where the average price is around $39.

What’s the cheapest month to fly from Phoenix Sky Harbor Intl Airport to San Diego with Frontier?

The cheapest month for Frontier flights to San Diego from Phoenix Sky Harbor Intl Airport is generally February, where plane tickets cost $66 on average. If possible, try to avoid the most expensive months of September and August, where tickets cost $99 and $103 respectively.

$30 Cheap Frontier Flights from Phoenix Sky Harbor Intl Airport to San Diego

PHX - SAN

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Flight Deals

Cheap Frontier Flight Deals from Phoenix Sky Harbor Intl Airport to San Diego

Here are some of the best deals found on KAYAK recently from Frontier for round-trip flights from Phoenix Sky Harbor Intl Airport to San Diego that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip Frontier flight deals from Phoenix Sky Harbor Intl Airport to San Diego

Fri, Feb 6 - Sun, Feb 8

9:55 am - 10:24 am

PHX

SAN

1h 29mnonstop

9:45 pm - 12:13 am

SAN

PHX

1h 28mnonstop

$59Frontier

Sun, Feb 15 - Sat, Feb 21

7:02 pm - 7:25 pm

PHX

SAN

1h 23mnonstop

9:27 am - 11:56 am

SAN

PHX

1h 29mnonstop

$66Frontier

Thu, Feb 12 - Sun, Feb 15

5:30 pm - 5:55 pm

PHX

SAN

1h 25mnonstop

8:10 pm - 10:43 pm

SAN

PHX

1h 33mnonstop

$67Frontier

Mon, Jan 5 - Tue, Jan 6

12:58 pm - 1:15 pm

PHX

SAN

1h 17mnonstop

1:03 pm - 3:38 pm

SAN

PHX

1h 35mnonstop

$69Frontier

Sat, Jan 3 - Sat, Jan 10

8:30 am - 8:47 am

PHX

SAN

1h 17mnonstop

2:46 pm - 5:15 pm

SAN

PHX

1h 29mnonstop

$73Frontier

Mon, Mar 9 - Thu, Mar 12

1:49 pm - 3:11 pm

PHX

SAN

1h 22mnonstop

3:16 pm - 4:41 pm

SAN

PHX

1h 25mnonstop

$76Frontier

Wed, Dec 31 - Wed, Dec 31

9:36 am - 9:57 am

PHX

SAN

1h 21mnonstop

10:57 am - 1:30 pm

SAN

PHX

1h 33mnonstop

$78Frontier

Sat, Jan 3 - Sat, Jan 10

8:30 am - 8:47 am

PHX

SAN

1h 17mnonstop

2:46 pm - 5:15 pm

SAN

PHX

1h 29mnonstop

$83Frontier

Thu, Mar 5 - Sun, Mar 8

5:30 pm - 5:55 pm

PHX

SAN

1h 25mnonstop

3:16 pm - 4:41 pm

SAN

PHX

1h 25mnonstop

$84Frontier

Sat, Mar 7 - Mon, Mar 9

2:09 pm - 2:30 pm

PHX

SAN

1h 21mnonstop

4:05 pm - 5:32 pm

SAN

PHX

1h 27mnonstop

$87Frontier

Useful Info

Low season	November
High season	July
Cheapest flight	$30
Average price round-trip	$208
Good deal round-trip	$177

Best time to beat the crowds with an average 7% drop in price.

Most popular time to fly with an average 6% increase in price.

Flight from Phoenix Sky Harbor Airport to San Diego

(avg. price over the last 2 weeks)

or less

When to Book Flights with Frontier from Phoenix Sky Harbor Intl Airport to San Diego

Average price per month

Flight prices as travel date approaches

How far in advance should I book tickets for a flight with Frontier from Phoenix Sky Harbor Intl Airport to San Diego?
Generally, when trying to get a below average price for your ticket, try to book around 14 days before departure. For the cheapest possible price, our data suggests booking 37 days before departure.
Is Frontier the cheapest airline to fly with from Phoenix Sky Harbor Intl Airport to San Diego?
Yes, based on our data, Frontier is the cheapest airline to fly the route with an average price of $118 return. The next cheapest options are Spirit Airlines and Alaska Airlines, with return flights costing on average $127 and $146 respectively.
What is the cheapest Frontier flight from Phoenix Sky Harbor Intl Airport to San Diego?
In the last 3 days, the lowest price for a flight with Frontier from Phoenix Sky Harbor Intl Airport to San Diego was $58 for a return flight and $29 for a one-way flight.
Does Frontier fly direct to San Diego from Phoenix Sky Harbor Intl Airport?
Yes, Frontier does offer direct flights for the route, with around 1 flights per week.
What’s the cheapest day of the week to fly from Phoenix Sky Harbor Intl Airport to San Diego with Frontier?
On average, the cheapest day of the week to fly from Phoenix Sky Harbor Intl Airport to San Diego with Frontier is Monday, when prices are around $19. The most expensive day is generally Saturday, where the average price is around $39.
What’s the cheapest month to fly from Phoenix Sky Harbor Intl Airport to San Diego with Frontier?
The cheapest month for Frontier flights to San Diego from Phoenix Sky Harbor Intl Airport is generally February, where plane tickets cost $66 on average. If possible, try to avoid the most expensive months of September and August, where tickets cost $99 and $103 respectively.

5.8

Fair3,082 verified ratings

6.0Boarding

5.5Comfort

6.7Crew

4.4Entertainment

4.6Food

Pros +

Crew was extremely pleasant. (in 1649 reviews)

Cons -

Several individuals used foul language 50% of of the 4hr flight. (in 4167 reviews)
The seats could be a bit bigger (in 2932 reviews)

Show reviews that mention

2.0 Poor

Verified traveler, Dec 2025

DEN

PHL

Not clean and was told I would get a great seat and it was not great at all

8.0 Very good

Yordanos, Dec 2025

SJU

PHL

Good- no snacks on a 4+ hour flight is painful but more painful was the lack of WiFi.

2.0 Poor

omnia, Dec 2025

MCO

CLE

Flight got delayed for 5 hours no good explanation was offered ;(

6.0 Okay

Verified traveler, Dec 2025

PHX

SEA

Horrible. I would never fly Frontier again. The booking process is tricky at best, but fraudulent in my opinion. Frontier customer service did nothing to rectify my purchase -- I ended up paying more than double what I could have gotten from other airlines and nearly triple what I thought I was buying from Frontier. Their booking practices are unfair to the consumer.

2.0 Poor

Daniel, Nov 2025

DEN

ATL

Delayed. Text notifications were slow. Not much information o what was happening. Boarding was slow and confusing. Wasn’t even offered water other flight. Had to ask. No entertainment at all. Felt like.a Greyhound bus.

8.0 Very good

Jaime, Nov 2025

LAS

SLC

It was excellent everything

4.0 Mediocre

Verified traveler, Nov 2025

LAX

IAH

When I wanted to check in 3 hours prior to boarding time, the employees mentioned “a little over an hour delay” so I waited for an hour then I went to go look for food in the terminal and most people from that flight were in the same area looking for food. Finally I decided after food to check to see if it’s anytime closer and now it’s 2 mins until boarding closes?! What are you kidding me? I didn’t receive anything via sms about boarding now nor via email or on the intercom. I luckily made it through, barely, and then there’s no room for my carry on mind you I’m in the very first row so I had to place my purse in one further row back and my carry on sections down. Not sure who pays for better seats to get your stuff placed all over the plane but that was the worst experience I’ve ever had flying with anyone.

8.0 Very good

Lisa, Nov 2025

PHL

SRQ

Delayed on tarmac and boarding

8.0 Very good

Martha, Nov 2025

MDW

MCO

Better than expected. Staff were friendly and nice on both flights.

2.0 Poor

Justin, Nov 2025

DEN

AUS

Worst experience ever...never fly Frontier again.

Everything you need to know for your flight from Phoenix Sky Harbor Intl Airport to San Diego

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Alaska Airlines flights from Phoenix Sky Harbor Intl Airport to San Diego

PHX - SAN

$30 Find Cheap Frontier Flights from Phoenix Sky Harbor Intl Airport to San Diego

Search hundreds of travel sites at once for deals on Frontier flights from Phoenix Sky Harbor Intl Airport to San Diego

Cheap Frontier Flight Deals from Phoenix Sky Harbor Intl Airport to San Diego

Recent round-trip Frontier flight deals from Phoenix Sky Harbor Intl Airport to San Diego

Recent one-way Frontier flight deals from Phoenix Sky Harbor Intl Airport to San Diego

Recent last minute Frontier flight deals from Phoenix Sky Harbor Intl Airport to San Diego

Recent direct Frontier flight deals from Phoenix Sky Harbor Intl Airport to San Diego

Good to know

When to Book Flights with Frontier from Phoenix Sky Harbor Intl Airport to San Diego

FAQs for flying to San Diego with Frontier

How far in advance should I book tickets for a flight with Frontier from Phoenix Sky Harbor Intl Airport to San Diego?

Generally, when trying to get a below average price for your ticket, try to book around 14 days before departure. For the cheapest possible price, our data suggests booking 37 days before departure.

Is Frontier the cheapest airline to fly with from Phoenix Sky Harbor Intl Airport to San Diego?

Yes, based on our data, Frontier is the cheapest airline to fly the route with an average price of $118 return. The next cheapest options are Spirit Airlines and Alaska Airlines, with return flights costing on average $127 and $146 respectively.

What is the cheapest Frontier flight from Phoenix Sky Harbor Intl Airport to San Diego?

In the last 3 days, the lowest price for a flight with Frontier from Phoenix Sky Harbor Intl Airport to San Diego was $58 for a return flight and $29 for a one-way flight.

Does Frontier fly direct to San Diego from Phoenix Sky Harbor Intl Airport?

Yes, Frontier does offer direct flights for the route, with around 1 flights per week.

What’s the cheapest day of the week to fly from Phoenix Sky Harbor Intl Airport to San Diego with Frontier?

On average, the cheapest day of the week to fly from Phoenix Sky Harbor Intl Airport to San Diego with Frontier is Monday, when prices are around $19. The most expensive day is generally Saturday, where the average price is around $39.

What’s the cheapest month to fly from Phoenix Sky Harbor Intl Airport to San Diego with Frontier?

The cheapest month for Frontier flights to San Diego from Phoenix Sky Harbor Intl Airport is generally February, where plane tickets cost $66 on average. If possible, try to avoid the most expensive months of September and August, where tickets cost $99 and $103 respectively.

Frontier Customer Reviews

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Everything you need to know for your flight from Phoenix Sky Harbor Intl Airport to San Diego

Other airlines flying from Phoenix Sky Harbor Intl Airport to San Diego

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Cabin class types available on flights to San Diego

Cabin classes available on flights to Phoenix Sky Harbor Intl Airport. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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Flights to other popular destinations

The most popular flights on KAYAK according to clicks in the last 2 weeks. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Top Frontier flights

The most popular destinations for flights with Frontier according to clicks from KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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