Frontier's Economy Bundle includes a carry-on bag and seat choice, ideal for budget travelers.
Frontier's Premium seats offer extra legroom, up to seven inches more than Standard seats.

Planning a trip from Sky Harbor Intl to San Diego? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.
| Low season | January |
|---|---|
| High season | July |
| Cheapest flight | $38 |
Direct departures
Phoenix Sky Harbor Intl to San Diego
Monday
Alaska Airlines, American Airlines, Frontier, +1 more
Alaska Airlines, American Airlines, +2 more
1
Tuesday
Alaska Airlines, American Airlines, Frontier, +1 more
Alaska Airlines, American Airlines, +2 more
1
Wednesday
Alaska Airlines, American Airlines, Southwest, +1 more
Alaska Airlines, American Airlines, +2 more
1
Thursday
Alaska Airlines, American Airlines, Frontier, +1 more
Alaska Airlines, American Airlines, +2 more
1
Friday
Alaska Airlines, American Airlines, Frontier, +1 more
Alaska Airlines, American Airlines, +2 more
1
Saturday
Alaska Airlines, American Airlines, Frontier, +1 more
Alaska Airlines, American Airlines, +2 more
1
Sunday
Alaska Airlines, American Airlines, Frontier, +1 more
Alaska Airlines, American Airlines, +2 more
1
Direct returns
San Diego to Phoenix Sky Harbor Intl
Monday
Alaska Airlines, American Airlines, Frontier, +1 more
Alaska Airlines, American Airlines, +2 more
1
Tuesday
Alaska Airlines, American Airlines, Frontier, +1 more
Alaska Airlines, American Airlines, +2 more
1
Wednesday
Alaska Airlines, American Airlines, Southwest, +1 more
Alaska Airlines, American Airlines, +2 more
1
Thursday
Alaska Airlines, American Airlines, Frontier, +1 more
Alaska Airlines, American Airlines, +2 more
1
Friday
Alaska Airlines, American Airlines, Frontier, +1 more
Alaska Airlines, American Airlines, +2 more
1
Saturday
Alaska Airlines, American Airlines, Frontier, +1 more
Alaska Airlines, American Airlines, +2 more
1
Sunday
Alaska Airlines, American Airlines, Frontier, +1 more
Alaska Airlines, American Airlines, +2 more
1
The flight crew was very professional and pleasant. Our flight was delayed 3 hours, but Kayak informed me in advance
The flight crew was very professional and pleasant. Our flight was delayed 3 hours, but Kayak informed me in advance
I really hate the seat assignment at the gate. I understand it is so families can sit together but it caused me and others a lot of unnecessary stress and confusion, enough for me to not fly Alaska again. The app is so awful that it did not even update my seat assignment on the boarding pass but sent me a notification of my seat... it showed in Apple Wallet but not in the Alaska app itself. That only made the stress worse. I think most people like myself prefer to know where they are seated at check in 24 hours before so they don't have to anxiously hang out at the gate the entire time. This is not a good use of your agents time either to be dealing with all of us asking where we are sitting. You should automatically assign the multiple seat purchases to be together before they check in and fill us solo travelers in those gaps as we check in.
Alaska Airlines have beautiful new airplanes that have comfortable seats but tight for a tall person like myself. They do provide upgrades to flyers but at a $140 cost. My flight went smooth and prompt as well as without a hitch. The flight crew were warm and friendly as well as very attentive. I'd recommend this airline over Frontier airlines any day.
Did not like that every price option offered, even the more expensive one, required I pay for my seat. My seat was changed without my consent My TSA did not show in Boarding Pass
Boarding passes could not be received online, even after online check-in. While they appeared on the Alaska.com app, they did not transfer to inbox or messages and were not available at all on the Alaska.com app following the check-in process. There was no choice other than to get boarding passes at the airport counter.
Poor, the last leg of our trip was cancelled and we didn't know about it until we arrived at the airport. Another flight on the same airline was not available until three days later which would have ruined our vacation. Luckily we were able to get re-blooked on another airline after spending hours at the airport.
The flight was fine. The connecting flight was a nightmare. Gate change without text or email notification was super frustrating and I ended up missing my connecting flight. Return flight was delayed and had I not quadruple checked flight time, gate and refreshed the Alaska Airlines app every 5 minutes, I would have taken a flight that would not arrive in time for my connecting flight. Ended up flying Delta home.
The flight was delayed so we didn’t get into San Diego until almost 1 AM. Otherwise, it was lovely.
I always like flying with Alaska, great service and leg room
They changed our flight from a one stop 3 hour layover to a non-stop. Saved us hours and got us there sooner.
The flight crew was extremely rude and especially not helpful when our flight was delayed.
The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.
The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.
Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.
San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.
Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.
Delays delays delays. Late taking off, late landing, wait for a gate, etc.
mandatory demand customer to check their carry on because not enough people check bags.
Connecting flight is on time and boarding was a breeze!
Very smooth checking in our luggage with a super pleasant SW agent. I enjoyed a fun entertaining movie.
I liked the Starlink WiFi but didn't like how they said they were the only airline to offer a free meal and it turns out to be just a standalone sandwich and then charge for snacks to go with it. Rather have the free snacks like Southwest, but have the option to purchase a decent meal for a 5+ hour flight.
I like Hawaiian, it was great that they had good internet connection across the Pacific Ocean, thanks to Star Link satellites. The seating was comfortable, ( I was in economy ). Maybe I missed it, but I only got offered a beverage once. It was a nonstop flight KOA to SMF. I would take it again next time I go that way.
Previously flown Hawaiian Airlines on similar routes, I found Alaska Airlines to be noticeably more comfortable. The seats on Alaska Airlines provided better support and cushioning, which made a significant difference on the long flight to the islands. When you’re spending 5-6 hours in the air, seat comfort really matters, and Alaska Airlines delivered where it counts. After comparing both carriers, I’ve decided to book with Alaska Airlines for all my future Hawaii trips. The superior seat comfort alone makes it worth choosing Alaska over Hawaiian Airlines. If you’re planning a trip to Hawaii and prioritizing comfort, I’d recommend giving Alaska Airlines a try. You won’t be disappointed. Highly recommended for Hawaii travel!
I received several emails about my 3:10 flight. When I showed up to the airport at 12:30 to check my bags I was told the flight was actually at 1 pm. They grudgingly rebooked me for a flight at 5:22 to Vegas to get a connecting to LAX. I did find the gate for my original 3:10 flight but they were booked. I proceeded to receive status updates and gate change information for the 3:10 flight, even though I was apparently never supposed to be on that flight
The crew was EXTREMELY helpful And sweet and the flight was smooth!
The Kayak confirmation number did not work for checking in the day before. I checked in at 8.30 using my ticket number. When I arrived at the airport, I was informed that the flight was overbooked, and since I had checked in late, I did not have a seat. The Next flight was not until ten PM. I called my wife, who had been taking care of our kids all weekend, and she was upset, calling me a liar and telling me to stay in SD. It turned my weekend getaway into a nightmare! I blame the Kayak website and will not book flights using your app in the future.
One hour waiting time after boarding, but arrived in time. I am satisfied
Flying with Hawaiian Airlines is a treat! They have the best crew, food and drinks! I’ve always enjoyed flying with Hawaiian Airlines and will continue to use them!
Amazing all female crew, including the pilot. Great flight attendants and smooth trip. Food was good. Boarding the plane from back to front would have made things significantly smoother. Took forever to wait for people to clear the alley. A little extra leg room would be nice also. Please thank your flight crew!
We decided to take our mom on vacation but we were worried how well she will do on the flight, she's a senior and required special accommodations such as transport chair since she can't stand for long periods. To our surprise my whole family was given priority boarding, my mom was given chair, we were not standing in line and were given seats in good area next to our mom. A+ experience!
Experience was good. We were delayed in leaving by 15 mins because the flight was waiting on a family that was late in getting to the gate. Food and drink options were as expected. I highly recommend checking in ahead of time using the airline’s app so that it’s quicker to get your luggage tags as soon as you arrive at the terminal. No more waiting in long lines!
The captain brought my 6 year old son into the cockpit and allowed him to ask questions, sit in the captain’s chair and talk about all the gears and levers. Made the trip very special for him.
Better service. No food options, but we did get drinks and a cookie.
it was fine, decent flight... dont get food besides cookies or pretzels so not sure why you ask about food. same for entertainment..
Liked that it was on time. Staff professional and friendly.
More choices on snacks. Built-in video screen to enjoy entertainment choices.
Loved the crew . Absolutely no complaints. Except for luggage lost
this plane was really old, had exit row seats and tray was in arm of seat so super uncomfortable to use. another seat they could t even use the tray it was broke. seat i. front of me had duct tape on it cause seat was ripped open... this plane should either be updated or retired.
We are too tired and frustrated to comment politely at this point
My flight was delayed for several hours. Sitting at gate 16 for several hours, I got a text from Kayak the gate changed to 9 before it was announced. Very bad communication at each gate from American Airlines employees. I received 10 notifications of delay from Kayak. My vacation started off horrible! I will write to American Airlines corporate office also.
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.
Terrible. The canceled my entire flight when I requested a refund for a trip frontier canceled trip one way.
i was unable to check in the flight. refund requested
I think Frontier was very good at communication. Their app worked very well. Loading was great and the flight was nice and easy.
Great for the price. No wifi or entertainment, but gate agents and crew were fantastic and we boarded quickly and left on time.
Decent clean onboard experience. Okay discount airline experience. Unfortunately, any customer service interactions are difficult and unhelpful. There is no service. Also, a premium seat only gets you premium boarding if you line up first. Once they start general boarding you must go to the back of the line. Not very premium
The crew was mostly okay. The flight attendant who answered our questions was curt and unhelpful unfortunately. He seemed upset and I understand having off days.
Very bad! No good service delayed my second connection flight
They canceled flight. Hard to believe there was even a plane incoming for us to get on
Plane was down graded and I lost my uncharged exit row with more leg room. No mention or offer of refund from podium. Flight attendant was nice to explain this happens often and that I could request a refund via online form submission. I did this and have heard nothing back.