Flight Deals
Cheap Frontier Flight Deals to San Diego
Here are some of the best deals found on KAYAK recently from Frontier 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.
Recent round-trip Frontier flight deals to San Diego
Wed, Oct 21 - Mon, Oct 26
1:12 pm - 2:29 pmPHX Phoenix Sky Harbor Intl-SAN San Diego
1h 17mnonstop
2:01 pm - 3:28 pmSAN San Diego-PHX Phoenix Sky Harbor Intl
1h 27mnonstop
$53Frontier
Tue, Oct 20 - Tue, Oct 27
1:12 pm - 2:29 pmPHX Phoenix Sky Harbor Intl-SAN San Diego
1h 17mnonstop
7:33 pm - 9:05 pmSAN San Diego-PHX Phoenix Sky Harbor Intl
1h 32mnonstop
$56Frontier
Tue, Nov 3 - Tue, Nov 10
7:15 am - 11:57 pmPHX Phoenix Sky Harbor Intl-SAN San Diego
17h 42m1 stop Denver Intl
7:33 pm - 10:05 pmSAN San Diego-PHX Phoenix Sky Harbor Intl
1h 32mnonstop
$57Frontier
Thu, Oct 22 - Thu, Oct 29
1:12 pm - 2:29 pmPHX Phoenix Sky Harbor Intl-SAN San Diego
1h 17mnonstop
7:33 pm - 9:05 pmSAN San Diego-PHX Phoenix Sky Harbor Intl
1h 32mnonstop
$58Frontier
Tue, Oct 20 - Fri, Oct 23
1:12 pm - 2:29 pmPHX Phoenix Sky Harbor Intl-SAN San Diego
1h 17mnonstop
2:01 pm - 3:28 pmSAN San Diego-PHX Phoenix Sky Harbor Intl
1h 27mnonstop
$59Frontier
Fri, Nov 6 - Wed, Nov 11
9:52 am - 10:11 amPHX Phoenix Sky Harbor Intl-SAN San Diego
1h 19mnonstop
7:33 pm - 10:05 pmSAN San Diego-PHX Phoenix Sky Harbor Intl
1h 32mnonstop
$60Frontier
Fri, Oct 16 - Tue, Oct 20
1:12 pm - 2:29 pmPHX Phoenix Sky Harbor Intl-SAN San Diego
1h 17mnonstop
2:01 pm - 3:28 pmSAN San Diego-PHX Phoenix Sky Harbor Intl
1h 27mnonstop
$61Frontier
Sat, Oct 31 - Mon, Nov 2
7:15 am - 11:57 pmPHX Phoenix Sky Harbor Intl-SAN San Diego
16h 42m1 stop Denver Intl
7:33 pm - 10:05 pmSAN San Diego-PHX Phoenix Sky Harbor Intl
1h 32mnonstop
$62Frontier
Wed, Oct 28 - Sun, Nov 1
8:52 am - 10:11 amPHX Phoenix Sky Harbor Intl-SAN San Diego
1h 19mnonstop
6:25 am - 9:04 amSAN San Diego-PHX Phoenix Sky Harbor Intl
25h 39m1 stop Denver Intl
$63Frontier
Thu, Oct 22 - Fri, Oct 23
1:12 pm - 2:29 pmPHX Phoenix Sky Harbor Intl-SAN San Diego
1h 17mnonstop
2:01 pm - 3:28 pmSAN San Diego-PHX Phoenix Sky Harbor Intl
1h 27mnonstop
$64Frontier
Recent one-way Frontier flight deals to San Diego
Tue, Nov 17
7:15 am - 3:58 pmPHX Phoenix Sky Harbor Intl-SAN San Diego
9h 43m1 stop Denver Intl
$48Frontier
Sun, Oct 18
11:22 am - 1:16 pmSFO San Francisco-SAN San Diego
1h 54mnonstop
$48Frontier
Mon, Nov 2
4:57 pm - 6:38 pmSFO San Francisco-SAN San Diego
1h 41mnonstop
$49Frontier
Sat, Oct 24
1:12 pm - 2:29 pmPHX Phoenix Sky Harbor Intl-SAN San Diego
1h 17mnonstop
$50Frontier
Fri, Nov 13
4:57 pm - 6:38 pmSFO San Francisco-SAN San Diego
1h 41mnonstop
$50Frontier
Thu, Nov 26
11:45 am - 12:07 pmPHX Phoenix Sky Harbor Intl-SAN San Diego
1h 22mnonstop
$51Frontier
Fri, Nov 27
5:33 pm - 7:16 pmSFO San Francisco-SAN San Diego
1h 43mnonstop
$51Frontier
Wed, Oct 28
1:45 pm - 6:38 pmPHX Phoenix Sky Harbor Intl-SAN San Diego
28h 53m1 stop San Francisco
$53Frontier
Wed, Oct 28
1:36 pm - 10:03 amSFO San Francisco-SAN San Diego
20h 27m1 stop Phoenix Sky Harbor Intl
$53Frontier
Sat, Oct 24
8:16 am - 4:49 pmPHX Phoenix Sky Harbor Intl-SAN San Diego
8h 33m1 stop Las Vegas Harry Reid Intl
$54Frontier
Recent last minute Frontier flight deals to San Diego
Sat, Oct 3 - Fri, Oct 9
11:37 am - 12:53 pmPHX Phoenix Sky Harbor Intl-SAN San Diego
1h 16mnonstop
2:01 pm - 3:28 pmSAN San Diego-PHX Phoenix Sky Harbor Intl
1h 27mnonstop
$77Frontier
Mon, Oct 5 - Tue, Oct 13
4:21 pm - 6:09 pmSFO San Francisco-SAN San Diego
1h 48mnonstop
3:14 pm - 5:03 pmSAN San Diego-SFO San Francisco
1h 49mnonstop
$88Frontier
Sat, Oct 3 - Fri, Oct 9
11:37 am - 12:53 pmPHX Phoenix Sky Harbor Intl-SAN San Diego
1h 16mnonstop
2:01 pm - 3:28 pmSAN San Diego-PHX Phoenix Sky Harbor Intl
1h 27mnonstop
$92Frontier
Sun, Oct 4 - Sat, Oct 10
8:21 am - 9:43 amPHX Phoenix Sky Harbor Intl-SAN San Diego
1h 22mnonstop
2:01 pm - 3:28 pmSAN San Diego-PHX Phoenix Sky Harbor Intl
1h 27mnonstop
$95Frontier
Sun, Oct 4 - Sat, Oct 10
8:21 am - 9:43 amPHX Phoenix Sky Harbor Intl-SAN San Diego
1h 22mnonstop
5:44 pm - 11:18 pmSAN San Diego-PHX Phoenix Sky Harbor Intl
5h 34m1 stop Las Vegas Harry Reid Intl
$130Frontier
Sat, Oct 3 - Tue, Oct 6
4:21 pm - 6:09 pmSFO San Francisco-SAN San Diego
1h 48mnonstop
10:28 am - 12:25 pmSAN San Diego-SFO San Francisco
1h 57mnonstop
$170Frontier
Fri, Oct 2 - Fri, Nov 6
4:21 pm - 6:09 pmSFO San Francisco-SAN San Diego
1h 48mnonstop
10:56 am - 12:51 pmSAN San Diego-SFO San Francisco
1h 55mnonstop
$172Frontier
Sat, Oct 3 - Tue, Oct 13
4:21 pm - 6:09 pmSFO San Francisco-SAN San Diego
1h 48mnonstop
3:14 pm - 5:03 pmSAN San Diego-SFO San Francisco
1h 49mnonstop
$179Frontier
Sat, Oct 3 - Tue, Oct 13
4:21 pm - 6:09 pmSFO San Francisco-SAN San Diego
1h 48mnonstop
3:14 pm - 5:03 pmSAN San Diego-SFO San Francisco
1h 49mnonstop
$180Frontier
Fri, Oct 2 - Mon, Oct 5
4:45 pm - 6:00 pmDFW Dallas/Fort Worth-SAN San Diego
3h 15mnonstop
4:54 pm - 12:20 amSAN San Diego-DFW Dallas/Fort Worth
5h 26m1 stop Denver Intl
$184Frontier
Recent direct Frontier flight deals to San Diego
Wed, Oct 21 - Mon, Oct 26
1:12 pm - 2:29 pmPHX Phoenix Sky Harbor Intl-SAN San Diego
1h 17mnonstop
2:01 pm - 3:28 pmSAN San Diego-PHX Phoenix Sky Harbor Intl
1h 27mnonstop
$53Frontier
Tue, Oct 20 - Tue, Oct 27
1:12 pm - 2:29 pmPHX Phoenix Sky Harbor Intl-SAN San Diego
1h 17mnonstop
7:33 pm - 9:05 pmSAN San Diego-PHX Phoenix Sky Harbor Intl
1h 32mnonstop
$56Frontier
Thu, Oct 22 - Thu, Oct 29
1:12 pm - 2:29 pmPHX Phoenix Sky Harbor Intl-SAN San Diego
1h 17mnonstop
7:33 pm - 9:05 pmSAN San Diego-PHX Phoenix Sky Harbor Intl
1h 32mnonstop
$58Frontier
Tue, Oct 20 - Fri, Oct 23
1:12 pm - 2:29 pmPHX Phoenix Sky Harbor Intl-SAN San Diego
1h 17mnonstop
2:01 pm - 3:28 pmSAN San Diego-PHX Phoenix Sky Harbor Intl
1h 27mnonstop
$59Frontier
Fri, Nov 6 - Wed, Nov 11
9:52 am - 10:11 amPHX Phoenix Sky Harbor Intl-SAN San Diego
1h 19mnonstop
7:33 pm - 10:05 pmSAN San Diego-PHX Phoenix Sky Harbor Intl
1h 32mnonstop
$60Frontier
Fri, Oct 16 - Tue, Oct 20
1:12 pm - 2:29 pmPHX Phoenix Sky Harbor Intl-SAN San Diego
1h 17mnonstop
2:01 pm - 3:28 pmSAN San Diego-PHX Phoenix Sky Harbor Intl
1h 27mnonstop
$61Frontier
Thu, Oct 22 - Fri, Oct 23
1:12 pm - 2:29 pmPHX Phoenix Sky Harbor Intl-SAN San Diego
1h 17mnonstop
2:01 pm - 3:28 pmSAN San Diego-PHX Phoenix Sky Harbor Intl
1h 27mnonstop
$64Frontier
Fri, Oct 23 - Mon, Oct 26
1:12 pm - 2:29 pmPHX Phoenix Sky Harbor Intl-SAN San Diego
1h 17mnonstop
2:01 pm - 3:28 pmSAN San Diego-PHX Phoenix Sky Harbor Intl
1h 27mnonstop
$65Frontier
Mon, Oct 26 - Fri, Oct 30
1:12 pm - 2:29 pmPHX Phoenix Sky Harbor Intl-SAN San Diego
1h 17mnonstop
7:33 pm - 9:05 pmSAN San Diego-PHX Phoenix Sky Harbor Intl
1h 32mnonstop
$66Frontier
Mon, Oct 19 - Tue, Oct 20
1:12 pm - 2:29 pmPHX Phoenix Sky Harbor Intl-SAN San Diego
1h 17mnonstop
2:01 pm - 3:28 pmSAN San Diego-PHX Phoenix Sky Harbor Intl
1h 27mnonstop
$68Frontier
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 $103 (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 $223 and $206 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 $53 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 $53 return.
How many direct flights does Frontier operate to San Diego every week?
Each week there are around 46 direct flights from within the United States to San Diego. The most common day for departures is Monday, with 15% 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 $194 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 $153 on average.
Good to know
Low season | February |
|---|---|
High season | October |
Cheapest flight | $48 |
Average price round-trip | $223 |
When to book flights with Frontier to San Diego
Average price per month
Flight prices as travel date approaches
FAQs for flying to San Diego with Frontier
Top tips for your flights to San Diego with Frontier
Frontier customer reviews
5.6
2,567 verified ratings
5.4Comfort
5.8Boarding
4.2Entertainment
6.5Crew
4.5Food
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Greyhound of the skies...
Flight delayed 9 hours. On tarmac for over an hour after arrival. Will never book with Frontier under any circumstances ever again.
My ATL–CVG Frontier flight was disappointing due to both an operational issue and unprofessional customer service. After everyone had boarded and the aircraft had pushed back from the gate, we were delayed because the passenger count did not match the flight manifest. The crew counted passengers approximately six times before the aircraft returned to the gate and gate agents boarded to help resolve the discrepancy. We were ultimately advised that a family had been allowed to board but not all of their boarding passes had been properly scanned. This resulted in a departure delay of nearly an hour. I did appreciate that the pilot kept passengers informed and tried to reassure us that some of the delay could be recovered during the flight. My greater concern was the customer-service experience. I am a Frontier Elite Platinum member and was seated within the first five rows. When I boarded, the overhead bins near my seat were already closed. I opened two bins to see whether my small backpack would fit. A female flight attendant sharply told me that a closed bin meant it was full, although the second bin clearly had available space. When I tried to ask whether I could simply place my backpack in that available space, she ignored me. Later, while the gate agents were working to resolve the passenger-count problem, I heard the same flight attendant make jokes about how many gate agents it takes to count passengers. She then made unnecessary comments about the male gate agent doing the count, men thinking they can do things better than women, and women knowing better and outliving men. Later in the flight, she also commented that passengers should know that the first thing they need to do is always be nice to the flight attendants. Courtesy absolutely should go both ways. Flight attendants deserve respect from passengers, but passengers also deserve respectful and professional treatment from the crew. Joking about colleagues who were actively trying to correct an operational problem, making gender-based comments in front of passengers, and being dismissive toward a passenger asking a simple baggage question were unnecessary and unprofessional. I fly enough to understand that delays and mistakes happen. What determines the quality of the experience is how those situations are handled. Unfortunately, the customer-service attitude on this flight made an already frustrating operational delay considerably worse.
Did not get on the flight, they had a gate change and my app never updated me! Trying to get flight credit
Flight was delayed by about an hour, once we arrived at LAX we had to take a shuttle to the baggage claim - it was completely disorganized. The agents at the shuttles were rude and unable to provide any information. Frontier charges extra for everything from bags to drinks - at the end it ends up being more expensive than flying the better airlines
Sat in the airport waiting for my flight for 5 hours. Finally got on the plane only to be thrown off and told that my flight was cancelled. Zero customer service. Nobody spoke to us. Just the worst
3+ hour delay on a direct flight is never ideal.
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!!!
No reclining seats
Friendly service. No charges for phones.
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Cabin classes available on flights to San Diego. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
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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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Flights from all regions of United States to San Diego. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
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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.