Is Frontier cheaper than other airlines flying to San Diego?

Frontier is the cheapest airline flying to San Diego with an average return price of $270. Flights to San Diego with Breeze Airways cost $338 on average, while Alaska Airlines cost $407.

Which other airlines fly to San Diego?

Along with Frontier, you can also fly to San Diego with Southwest, Delta, American Airlines, Breeze Airways, Alaska Airlines, JetBlue, United Airlines, Alaska Airlines and Breeze Airways.

How much is a flight to San Diego with Frontier?

On average, Frontier flights to San Diego cost $270 for a round-trip.

Which airport do Frontier flights to San Diego fly into?

You’ll fly into San Diego Airport when flying to San Diego with Frontier.

Frontier flights to San Diego (SAN) from $51

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Flight Deals

Cheap Frontier Flight Deals to San Diego

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

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One-way

Last minute

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Recent round-trip Frontier flight deals to San Diego

Fri, Nov 20 - Mon, Nov 23

8:59 pm - 7:55 amPHX Phoenix Sky Harbor Intl-SAN San Diego

11h 56m1 stop Las Vegas Harry Reid Intl

1:02 pm - 3:33 pmSAN San Diego-PHX Phoenix Sky Harbor Intl

1h 31mnonstop

$79Frontier

Thu, Jan 28 - Sat, Jan 30

9:21 am - 2:38 pmPHX Phoenix Sky Harbor Intl-SAN San Diego

6h 17m1 stop Las Vegas Harry Reid Intl

3:09 pm - 5:37 pmSAN San Diego-PHX Phoenix Sky Harbor Intl

1h 28mnonstop

$80Frontier

Wed, Jan 13 - Sat, Jan 30

7:35 am - 4:31 pmPHX Phoenix Sky Harbor Intl-SAN San Diego

9h 56m1 stop Denver Intl

3:09 pm - 5:37 pmSAN San Diego-PHX Phoenix Sky Harbor Intl

1h 28mnonstop

$81Frontier

Mon, Nov 16 - Thu, Nov 19

9:52 am - 10:11 amPHX Phoenix Sky Harbor Intl-SAN San Diego

1h 19mnonstop

8:20 pm - 11:25 amSAN San Diego-PHX Phoenix Sky Harbor Intl

14h 05m1 stop Las Vegas Harry Reid Intl

$82Frontier

Tue, Dec 1 - Mon, Dec 7

7:52 pm - 11:57 pmPHX Phoenix Sky Harbor Intl-SAN San Diego

5h 05m1 stop Denver Intl

7:06 pm - 9:38 pmSAN San Diego-PHX Phoenix Sky Harbor Intl

1h 32mnonstop

$83Frontier

Sat, Dec 5 - Sat, Dec 12

4:30 pm - 4:47 pmPHX Phoenix Sky Harbor Intl-SAN San Diego

1h 17mnonstop

11:14 am - 8:45 pmSAN San Diego-PHX Phoenix Sky Harbor Intl

8h 31m1 stop Denver Intl

$84Frontier

Sat, Dec 12 - Mon, Dec 14

8:32 pm - 8:02 amSFO San Francisco-SAN San Diego

11h 30m1 stop Las Vegas Harry Reid Intl

7:51 pm - 9:46 pmSAN San Diego-SFO San Francisco

1h 55mnonstop

$84Frontier

Fri, Nov 20 - Fri, Dec 4

8:59 pm - 7:55 amPHX Phoenix Sky Harbor Intl-SAN San Diego

11h 56m1 stop Las Vegas Harry Reid Intl

7:05 pm - 9:37 pmSAN San Diego-PHX Phoenix Sky Harbor Intl

1h 32mnonstop

$85Frontier

Fri, Dec 11 - Tue, Dec 15

9:16 pm - 8:02 amSFO San Francisco-SAN San Diego

10h 46m1 stop Las Vegas Harry Reid Intl

7:51 pm - 9:46 pmSAN San Diego-SFO San Francisco

1h 55mnonstop

$85Frontier

Fri, Nov 20 - Mon, Nov 23

8:59 pm - 7:55 amPHX Phoenix Sky Harbor Intl-SAN San Diego

11h 56m1 stop Las Vegas Harry Reid Intl

1:02 pm - 3:33 pmSAN San Diego-PHX Phoenix Sky Harbor Intl

1h 31mnonstop

$86Frontier

Useful Info

KAYAK's insights & trends for San Diego flights with Frontier

Get data-powered insights and trends into Frontier flights to San Diego to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly with Frontier to San Diego?

The cheapest month for Frontier flights to San Diego is February, where tickets cost $102 (return) on average. On the other hand, the most expensive months to fly this route on Frontier are June and July, where the average cost of round-trip tickets is $221 and $205 respectively.

How far in advance should I book Frontier flights to San Diego?

For the absolute cheapest price on Frontier, our data suggests you should book 4 weeks before departure.

What is the cheapest flight to San Diego with Frontier?

The cheapest airline ticket to San Diego from the United States with Frontier in the last 5 days was $51 one-way, and $79 round-trip on the route from Phoenix Sky Harbor Intl Airport to San Diego. The most popular route is from Phoenix Sky Harbor Intl Airport to San Diego and the cheapest ticket found on this route in the last 5 days was $79 return.

How many direct flights does Frontier operate to San Diego every week?

Each week there are around 66 direct flights from within the United States to San Diego. The most common day for departures is Friday, with 24% of flights taking off on this day.

What is the cheapest day to fly to San Diego?

Based on KAYAK data, the cheapest day to fly to San Diego is Tuesday where tickets can be as cheap as $148. On the other hand, the most expensive day to fly is Sunday, where prices are $199 on average.

What is the cheapest time of day to fly to San Diego with Frontier?

The cheapest time of day to fly to San Diego with Frontier is generally in the morning, when flights cost $162 on average.

Low season	February
High season	October
Cheapest flight	$51
Average price round-trip	$254

Best time to beat the crowds with an average 18% drop in price.

Most popular time to fly with an average 9% increase in price.

Flight from Phoenix Sky Harbor Airport to San Diego

(price for this month)

When to book flights with Frontier to San Diego

Average price per month

Flight prices as travel date approaches

Is Frontier cheaper than other airlines flying to San Diego?
Frontier is the cheapest airline flying to San Diego with an average return price of $270. Flights to San Diego with Breeze Airways cost $338 on average, while Alaska Airlines cost $407.
Which other airlines fly to San Diego?
Along with Frontier, you can also fly to San Diego with Southwest, Delta, American Airlines, Breeze Airways, Alaska Airlines, JetBlue, United Airlines, Alaska Airlines and Breeze Airways.
How much is a flight to San Diego with Frontier?
On average, Frontier flights to San Diego cost $270 for a round-trip.
Which airport do Frontier flights to San Diego fly into?
You’ll fly into San Diego Airport when flying to San Diego with Frontier.

The cheapest flight to San Diego with Frontier found on KAYAK in the last 2 weeks departed from Phoenix Sky Harbor Intl Airport and cost $75.
If you’re intending to fly with Frontier, book your flight to San Diego at least 2 weeks before departure to ensure a below-average price.
High season for flights to San Diego with Frontier is October and prices are highest at this time. The cheapest month to fly is February.

5.5

Fair2,516 verified ratings

6.5Crew

5.8Boarding

5.4Comfort

4.2Entertainment

4.5Food

10.0 Wonderful

Walt, Oct 2026

Good for the price to value.

2.0 Poor

Anonymous, Oct 2026

Air was off while waiting on the runway and the temperatures became very uncomfortably hot. Flight attendants were very loud and rude the entire flight.

2.0 Poor

William, Oct 2026

I booked tickets from San Diego to Cincinnati months in advance to attend my sister’s wedding, a wedding where I was serving as the officiant. At 10:00 PM the night before my 6:00 AM flight (just 8 hours before departure), I received an alert that my first leg to Denver was delayed, causing me to miss my connecting flight to Cincinnati. When I called Frontier customer service, they informed me that they couldn't get me on any other flight that would get me there in time for the Saturday wedding, let alone the rehearsal dinner. Because I had a critical role in the wedding, I was forced to buy a last-minute ticket on another airline for three times the original price, costing me well over $1,000 extra. Even with the emergency flight, I still missed the rehearsal dinner entirely. When I spoke with Frontier, they agreed to refund my original ticket, but showed zero care or accountability for the massive financial burden and distress they caused. Their "compensation" for causing me to spend an extra $1,000+ and miss an irreplaceable family event? A $75 Frontier voucher. Frontier completely dropped the ball. Their customer service showed zero empathy, and their reliability is non-existent. I will never fly Frontier again, and no one else should either if they actually need to get where they want to go. Tip for anyone flying from Denver to Cincinnati: Avoid Frontier connecting flights or layovers at all costs, especially for time-sensitive events. Book direct flights with an airline that actually offers reliable customer support and rebooking options when delays occur.

2.0 Poor

William, Oct 2026

I booked tickets from San Diego to Cincinnati months in advance to attend my sister’s wedding, a wedding where I was serving as the officiant. At 10:00 PM the night before my 6:00 AM flight (just 8 hours before departure), I received an alert that my first leg to Denver was delayed, causing me to miss my connecting flight to Cincinnati. When I called Frontier customer service, they informed me that they couldn't get me on any other flight that would get me there in time for the Saturday wedding, let alone the rehearsal dinner. Because I had a critical role in the wedding, I was forced to buy a last-minute ticket on another airline for three times the original price, it costing me well over $1,000 extra. Even with the emergency flight, I still missed the rehearsal dinner entirely. When I spoke with Frontier, they agreed to refund my original ticket, but showed zero care or accountability for the massive financial burden and distress they caused. Their "compensation” for causing me to spend an extra $1,000+ and miss an irreplaceable family event? A $75 Frontier voucher. Frontier completely dropped the ball. Their customer service showed zero empathy letting me know that it was Frontier who was the real victim by refunding my ticket price, and their reliability is non-existent. I will never fly Frontier again, and I strongly advise anyone who actually needs to arrive at their destination on time for an important event to book with literally any other airline.

10.0 Wonderful

Anonymous, Oct 2026

Great flight!

2.0 Poor

Anonymous, Oct 2026

Flight delayed and missed connection. Next available flight was a 10 hour delay.

10.0 Wonderful

David, Oct 2026

Ability to choose to board early

2.0 Poor

Tom, Oct 2026

It got me to my destination? However we were an hour delayed departing, and we never received any updates or notifications from staff. Poor communication and customer service.

4.0 Mediocre

Rebecca, Oct 2026

Frontier didn’t give us enough notice that our flight had been delayed. I was just entering the airport when I received the notice, less than 2hrs before my scheduled flight. They delayed it 1hr 22min because another jet left late out of Vegas. Frontier needs better communication with customers because I could have eaten at home and had someone drive me instead of paying for an Uber.

10.0 Wonderful

Benita Harris, Oct 2026

Great flight, no problems. I wish they would increase the checked bag weight limit. Packing was very stressful.

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KAYAK's insights & trends for San Diego flights with Frontier

What is the cheapest month to fly with Frontier to San Diego?

How far in advance should I book Frontier flights to San Diego?

What is the cheapest flight to San Diego with Frontier?

How many direct flights does Frontier operate to San Diego every week?

What is the cheapest day to fly to San Diego?

What is the cheapest time of day to fly to San Diego with Frontier?

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