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 $228. Flights to San Diego with Alaska Airlines cost $326 on average, while Breeze Airways cost $356.

Which other airlines fly to San Diego?

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

How much is a flight to San Diego with Frontier?

On average, Frontier flights to San Diego cost $228 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 $48

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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.

Round-trip

One-way

Last minute

Direct

Recent round-trip Frontier flight deals to San Diego

Tue, Sep 8 - Tue, Sep 15

1:07 pm - 2:50 pmSFO San Francisco-SAN San Diego

1h 43mnonstop

10:28 am - 12:25 pmSAN San Diego-SFO San Francisco

1h 57mnonstop

$77Frontier

Tue, Sep 15 - Sat, Sep 19

7:11 pm - 4:59 pmSFO San Francisco-SAN San Diego

21h 48m1 stop Las Vegas Harry Reid Intl

1:38 pm - 3:33 pmSAN San Diego-SFO San Francisco

1h 55mnonstop

$78Frontier

Thu, Sep 3 - Sun, Sep 6

1:07 pm - 2:50 pmSFO San Francisco-SAN San Diego

1h 43mnonstop

10:00 am - 11:52 amSAN San Diego-SFO San Francisco

1h 52mnonstop

$79Frontier

Mon, Sep 14 - Mon, Sep 21

4:31 pm - 6:19 pmSFO San Francisco-SAN San Diego

1h 48mnonstop

10:28 am - 12:25 pmSAN San Diego-SFO San Francisco

1h 57mnonstop

$80Frontier

Sat, Sep 19 - Sat, Sep 26

4:31 pm - 6:19 pmSFO San Francisco-SAN San Diego

1h 48mnonstop

4:54 pm - 12:14 amSAN San Diego-SFO San Francisco

7h 20m1 stop Denver Intl

$81Frontier

Thu, Sep 10 - Sat, Sep 12

4:31 pm - 6:19 pmSFO San Francisco-SAN San Diego

1h 48mnonstop

4:54 pm - 12:14 amSAN San Diego-SFO San Francisco

7h 20m1 stop Denver Intl

$82Frontier

Thu, Oct 1 - Sun, Oct 4

4:31 pm - 6:19 pmSFO San Francisco-SAN San Diego

1h 48mnonstop

10:28 am - 12:25 pmSAN San Diego-SFO San Francisco

1h 57mnonstop

$83Frontier

Sat, Sep 12 - Tue, Sep 15

4:31 pm - 6:19 pmSFO San Francisco-SAN San Diego

1h 48mnonstop

10:28 am - 12:25 pmSAN San Diego-SFO San Francisco

1h 57mnonstop

$84Frontier

Mon, Sep 21 - Thu, Sep 24

4:34 pm - 11:51 pmSFO San Francisco-SAN San Diego

7h 17m1 stop Denver Intl

10:28 am - 12:25 pmSAN San Diego-SFO San Francisco

1h 57mnonstop

$85Frontier

Mon, Sep 21 - Thu, Sep 24

4:31 pm - 6:19 pmSFO San Francisco-SAN San Diego

1h 48mnonstop

4:54 pm - 12:14 amSAN San Diego-SFO San Francisco

7h 20m1 stop Denver Intl

$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 $104 (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 $224 and $207 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 $48 one-way, and $77 round-trip on the route from San Francisco to San Diego. The most popular route is from San Francisco to San Diego and the cheapest ticket found on this route in the last 5 days was $77 return.

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

Each week there are around 60 direct flights from within the United States to San Diego. The most common day for departures is Monday, with 18% 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 $144. On the other hand, the most expensive day to fly is Sunday, where prices are $184 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 $147 on average.

Low season	February
High season	August
Cheapest flight	$48
Average price round-trip	$249

Best time to beat the crowds with an average 13% drop in price.

Most popular time to fly with an average 12% increase in price.

Flight from San Francisco 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 $228. Flights to San Diego with Alaska Airlines cost $326 on average, while Breeze Airways cost $356.
Which other airlines fly to San Diego?
Along with Frontier, you can also fly to San Diego with Southwest, Alaska Airlines, Breeze Airways, Breeze Airways, Delta, Alaska Airlines, JetBlue and Sun Country Air.
How much is a flight to San Diego with Frontier?
On average, Frontier flights to San Diego cost $228 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 $46.
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 August and prices are highest at this time. The cheapest month to fly is February.

5.6

Fair2,657 verified ratings

5.9Boarding

4.3Entertainment

4.5Food

6.5Crew

5.4Comfort

2.0 Poor

Anonymous, Aug 2026

When I was boarding my departure from Raleigh to Orlando I was inappropriately scolded by a female dog named Mia because I didn’t pay in advance for my carry on bag ($75). Frontiers website is confusing regarding pre-paying for carryons so it was a simple mistake. I also had paid for “upfront plus” meaning me and my son were seated in the front row with no one in the middle seat ($450 upgrade). When we were boarding Mia said “sir, you didn’t pay for your carryon” in a not so polite tone and told me to get out of line and come back to the counter to pay for my carryon. The way they had the retractable rope left me no room to circle back without making the people behind me move so I just stood there and then she said a second time “sir!! Go pay for your carryon” in an embarrassing tone. I then moved their rope so I could get back to the counter when a second female dog then asked “are you done!?!?” because I had said “do you want me to bulldoze the people behind me?” I then said you do realize I paid over $400 for upfront plus so I was certainly not trying to sneak a carryon bag without paying. Long story short, I am soooo done with discount airlines!!! By the time you pay for all the “extras” you might as well have paid for Delta Southwest or American! Frontier airlines sucks and I was embarrassed by a female dog named Mia!!!

4.0 Mediocre

Wissam, Aug 2026

No reclining seats

8.0 Very good

Anonymous, Aug 2026

Friendly service. No charges for phones.

8.0 Very good

Noel, Aug 2026

Great services

2.0 Poor

Anonymous, Aug 2026

They cancelled my flight

10.0 Wonderful

Joe, Aug 2026

Frontier is good until they cancel your flight. Way too many cancellations.

2.0 Poor

Gregory, Aug 2026

See my last review

4.0 Mediocre

Gregory, Aug 2026

I know Frontier is a “no-frills” airline. I understand the concept. However, I jumped on some tickets for our family vacation, expecting to play a bit of a game to figure out the family bags and not over spend. In the end, I got the short end of this deal by far. 1. I did not expect them to charge the baggage fee for each direction. It makes the fee look high-ish at a glance, but reasonable. Then when you get to checkout and realize you have to pay it twice to come home with your luggage, it becomes ridiculous. 2. The low checked bag weight limit. I am used to packing a 50lb bag with my preferred airline. Frontier’s artificially low 40lb limit more quickly triggers the extra weight fee, which almost DOUBLES the price of the bag if you go over ($79 for the bag/$75 for the next 10 lbs) 3. The fee for a carry-on bag is the same as a checked bag but with a lower size and weight limit. Make it make sense! 4. The seats are terrible. My 2.5 hour flight almost had me losing my mind. I’m 6’3” and my femurs barely fit in the space provided. My knees had to wiggle just right to jam into the crack next to the armrest of the seat in front of me. The cushioning was thin and inadequate. I am tall but I’m not a freak. These seats are unacceptable. 5. I overheard the woman next to me speaking with the gate agent about being charged a $25 fee for not checking in online - she checked in at the airport counter when she arrived. That’s ridiculous. She was old and in a wheelchair. She had a paper boarding pass, and was obviously not tech savvy. She should not be punished for that. 6. They do not have good placement in the terminals. It was always out on the end or down on a subfloor, and we had to walk out on the tarmac almost every time. In Denver. Their home airport! 7. Every time I loaded a new page on the website while buying my tickets or my bags, it was constantly trying to upsell me on some esoteric bundle. Like, a pop-up every time. Very annoying. 8. No screens in the boarding area (at least where we were) to confirm you’re in the right place. Just static gate number signs. I am sure these are standard practices for Frontier, and I should have read more about them before I purchased tickets, but as a result of this single round trip, I do not plan to ever use this cut-rate airline again. I would rather pay the normal amount for a ticket and be treated like a customer instead of a mark.

2.0 Poor

Anonymous, Aug 2026

Our flight was delayed 2 hours and when they changed the the time to 1 hour I wasn't alerted and when I checked the gate the plane was still there but they already shut the doors so I had to buy another flight.

6.0 Okay

Algernon, Aug 2026

Okay 👍

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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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