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Find cheap Frontier flights to San Diego from $19

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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.

Recent round-trip Frontier flight deals to San Diego

Recommended round-trip Frontier deals departing in the coming months to San Diego.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
10:43 pm - 12:20 amDEN-SAN
2h 37mnonstop
6:55 am - 10:26 amSAN-DEN
2h 31mnonstop
$38Frontier
Find Deal
Tue, Mar 25 - Wed, Mar 26
10:43 pm - 12:20 amDEN-SAN
2h 37mnonstop
6:55 am - 10:26 amSAN-DEN
2h 31mnonstop
$47Frontier
Find Deal
Wed, Mar 19 - Wed, Mar 26
10:43 pm - 12:20 amDEN-SAN
2h 37mnonstop
6:25 am - 9:56 amSAN-DEN
2h 31mnonstop
$48Frontier
Find Deal
Thu, Mar 20 - Tue, Mar 25
10:43 pm - 12:20 amDEN-SAN
2h 37mnonstop
6:55 am - 10:26 amSAN-DEN
2h 31mnonstop
$52Frontier
Find Deal
Sun, Mar 23 - Wed, Mar 26
10:43 pm - 12:20 amDEN-SAN
2h 37mnonstop
6:25 am - 9:56 amSAN-DEN
2h 31mnonstop
$56Frontier
Find Deal
Wed, Mar 12 - Sun, Mar 16
10:43 pm - 12:14 amDEN-SAN
2h 31mnonstop
6:25 am - 9:57 amSAN-DEN
2h 32mnonstop
$57Frontier
Find Deal
Mon, Apr 21 - Thu, Apr 24
10:05 am - 11:29 amDEN-SAN
2h 24mnonstop
8:50 pm - 12:28 amSAN-DEN
2h 38mnonstop
$58Frontier
Find Deal
Wed, Apr 16 - Thu, Apr 24
10:43 pm - 12:20 amDEN-SAN
2h 37mnonstop
6:55 am - 10:26 amSAN-DEN
2h 31mnonstop
$59Frontier
Find Deal
Sat, Mar 15 - Wed, Mar 19
10:43 pm - 12:20 amDEN-SAN
2h 37mnonstop
6:25 am - 9:56 amSAN-DEN
2h 31mnonstop
$60Frontier
Find Deal
Sat, Mar 15 - Mon, Mar 17
10:43 pm - 12:14 amDEN-SAN
2h 31mnonstop
6:25 am - 9:57 amSAN-DEN
2h 32mnonstop
$63Frontier
Find Deal
Thu, Apr 24 - Sat, Apr 26

Good to know

Low season

January

High season

July

Cheapest flight

$19

Average price round-trip

$308
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 4% increase in price.
Flight from Denver 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

FAQs for flying to San Diego with Frontier

  • Is Frontier cheaper than other airlines flying to San Diego?

    With an average return price of $197, Frontier is cheaper than Breeze Airways, American Airlines, Delta and Hawaiian Airlines when it comes to flights to San Diego. However, the cheapest airline flying to San Diego is Spirit Airlines, with an average return price of $165.

  • Which other airlines fly to San Diego?

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

  • How much is a flight to San Diego with Frontier?

    On average, Frontier flights to San Diego cost $197 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.

See more FAQs

Top tips for your flights 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 $42.

Frontier customer reviews

6.0
OkayBased on 3,359 verified guest reviews
5.7Comfort
4.6Entertainment
6.9Crew
6.3Boarding
4.8Food

Pros +
Cons -
  • On the ticket it said checked bag. (in 1044 reviews)

Show reviews that mention
Traveler rating:
Sort by:
A
2.0 Poor
The check in process was a mess for no reason. I spent an hour waiting in line trying to get them to print my boarding pass and as a result I missed my flight.
C
2.0 Poor
The airline used deceptive tactics to charge us more for our trip. Search Frontier Class Action Lawsuit to find out more or read the hundreds of reviews that have nearly identical stories.. don't fly this airline.. you've been warned.
R
2.0 Poor
Check in at Philadelphia international was absolutely terrible! I fly 2 to 3 times a month and avoid frontier at all cost and will never fly Frontier again! The night before travel, I tried checking in however, the app was giving me an error, so I went to the desktop, which instructed you that you need to use the app. The next day I presented at the check-in gate after trying at least a half dozen times prior to getting into the airport and continuing to getting the error in the app. I actually had rebooted my phone numerous times and reinstall the app just in case. My phone is only one generation older than the current model. It has no problems completing a frontier flight purchase or any other app issues. There was only three frontier employees working at check-in and a huge line while I was in line I continued to try and check in via the app. As I approach the desk, I was dreading dealing with the agent. He was extremely unprofessional, anti-semantic & very ignorant, and mean to the people in front of me, as well as the people who ended up being behind me. He literally told people “Man I don’t care bout y’all” in his native dialect! Maintaining my composure I approached and explained the situation. To which he replied, you’re gonna have to pay then! I don’t understand. It’s an issue with their app not allowing me to check in! Not my issue! He told me if I pay cash it would be $15, $25 if I pay credit card. I don’t understand a $10 difference for paying with a credit card? I am completely cashless so I continued to try using the app to avoid the $25 fee, Which I still don’t believe that I should be responsible for since it was Frontier’s technical issue!!! I continued to check in via the app a couple more times after he verified I was doing everything right he proceeded to continue to belittle the people behind me. Yelling at them saying I don’t care about you people! I cannot believe that this is the way that businesses would treat its customers! Unfortunately, the black mail with dreadlocks did not have a name tag all he had was a frontier sweater on! For the $25 fee that I ended up getting charged on my credit card. I should’ve just booked originally with Spirit or any other carrier! I have no problem paying fees that I should be responsible for, but when it’s due to a technical failure of a company, the customer should not be responsible for it! I cannot believe that it’s not frontier going out of business!
A
10.0 Wonderful
Excellent
A
2.0 Poor
Everything... even the ticket rebooking counter is rude.
C
2.0 Poor
they delayed my flight which ended up, causing my layover flight to leave without me, resulting in me missing a flight and having to stay overnight in Houston international. I got no compensation other than a flight to my original location only a day later. i’ve never experienced such a unprofessional situation
J
2.0 Poor
Flight was delayed over 8 hours.
A
2.0 Poor
The flight left over two hours late. They charged me $180 to bring a carry on. There was an error with the spelling of my name and Frontair agent lied that I would need to pay $200 for her to fix the spelling, and pressured me that if I don't do it quick I would lose the flight. I called back and another agent said it costs $75 to fix. All in all, this company is a complete scam.
A
10.0 Wonderful
Very easy with the app to board and staff skills
A
4.0 Mediocre
I took my first and last flight with FRONTIER. The seats are not able to be reclined so it’s not a very comfortable experience when you take a flight of 3 hours or longer. You must pay for your luggage either carry on or check in, so taking all this in consideration at the end what you think you’re saving your paying in services that should be included. Not a beverage in sight. . You’re seriously better off getting on a proper airline such as Delta, AA, United, etc.

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