TYS - SAN

$139 Find Cheap Flights from Knoxville to San Diego

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Knoxville to San Diego departing on 2/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Diego

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Knoxville to San Diego, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Knoxville to San Diego, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$209
Overall average: $330
Frontier
Mon 2/23Fri 2/27
TYS - SAN • 1 stop
Cheapest one-way
$117
Typical prices: $159-$174
Frontier
Mon 2/2
TYS - SAN • 1 stop
Top airlines
Frontier
Cheapest • from $209 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 22% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
July
Cheapest • 30% price drop
August
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Diego!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Knoxville to San Diego (TYS-SAN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Knoxville 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 flight deals from Knoxville to San Diego

Mon, Feb 23 - Fri, Feb 27
Frontier Logo
8:13 pm - 9:41 pm
TYS
-
SAN
28h 28m
1 stop
Frontier Logo
8:35 am - 6:06 pm
SAN
-
TYS
6h 31m
1 stop
$209Frontier
Fri, Feb 6 - Mon, Feb 9
Frontier Logo
4:25 pm - 12:08 am
TYS
-
SAN
10h 43m
1 stop
Frontier Logo
6:30 am - 3:35 pm
SAN
-
TYS
6h 05m
1 stop
$235Frontier
Fri, Feb 6 - Sun, Feb 8
Frontier Logo
4:25 pm - 12:08 am
TYS
-
SAN
10h 43m
1 stop
Frontier Logo
6:30 am - 3:35 pm
SAN
-
TYS
30h 05m
1 stop
$250Frontier
Mon, Feb 9 - Thu, Feb 12
Multiple Airlines Logo
4:30 pm - 9:14 pm
TYS
-
SAN
7h 44m
1 stop
Multiple Airlines Logo
6:25 am - 5:52 pm
SAN
-
TYS
8h 27m
1 stop
$255Multiple Airlines
Mon, Feb 2 - Fri, Feb 6
Frontier Logo
4:30 pm - 12:08 am
TYS
-
SAN
10h 38m
1 stop
Frontier Logo
6:30 am - 3:30 pm
SAN
-
TYS
6h 00m
1 stop
$256Frontier
Tue, Feb 24 - Tue, Mar 3
United Airlines Logo
8:45 am - 3:00 pm
TYS
-
SAN
9h 15m
1 stop
United Airlines Logo
10:59 am - 8:37 pm
SAN
-
TYS
6h 38m
1 stop
$277United Airlines
Tue, Feb 24 - Tue, Mar 3
United Airlines Logo
9:40 am - 3:41 pm
TYS
-
SAN
9h 01m
1 stop
United Airlines Logo
11:05 am - 10:30 pm
SAN
-
TYS
8h 25m
2 stops
$282United Airlines
Tue, Feb 17 - Tue, Feb 24
American Airlines Logo
5:45 am - 12:08 pm
TYS
-
SAN
9h 23m
1 stop
American Airlines Logo
6:20 am - 4:31 pm
SAN
-
TYS
7h 11m
1 stop
$304American Airlines
Sat, Mar 7 - Wed, Mar 11
Southwest Logo
7:10 pm - 11:00 pm
TYS
-
SAN
6h 50m
1 stop
Southwest Logo
6:20 am - 9:10 pm
SAN
-
TYS
11h 50m
1 stop
$309Southwest
Mon, Feb 2 - Fri, Feb 6
Frontier Logo
4:30 pm - 12:08 am
TYS
-
SAN
10h 38m
1 stop
Frontier Logo
6:30 am - 3:30 pm
SAN
-
TYS
6h 00m
1 stop
$311Frontier
Booking Insights

KAYAK's insights & trends for Knoxville to San Diego flights

Get data-powered insights and trends into flights from Knoxville 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 from Knoxville to San Diego?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Knoxville to San Diego, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Knoxville to San Diego is July, where tickets cost $288 (return) on average. On the other hand, the most expensive months are December and November, where the average cost of round-trip tickets is $477 and $467 respectively.

How far in advance should I book a flight from Knoxville to San Diego?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Knoxville to San Diego, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Knoxville to San Diego, you should book around 2 weeks before departure, which saves you about 22% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Good to know

Low seasonDecember
Cheapest flight$117
Best time to beat the crowds but there is an average 16% increase in price.
Flight from Knoxville to San Diego

When to book flights from Knoxville to San Diego

Are your dates flexible? Find out the best times to travel from Knoxville to San Diego based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Knoxville to San Diego

  • What is the cheapest flight from Knoxville to San Diego?

    In the last 3 days, the lowest price for a flight from Knoxville to San Diego was $117 for a one-way ticket and $209 for a round-trip.

  • Do I need a passport to fly between Knoxville and San Diego?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which aircraft models fly most regularly from Knoxville to San Diego?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Knoxville to San Diego?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Knoxville and San Diego, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Knoxville to San Diego, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Knoxville to San Diego are Alaska Airlines and Delta. With an average price for the route of $448 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $359 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Knoxville to San Diego?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Knoxville to San Diego.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Knoxville to San Diego?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Diego from Knoxville is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Knoxville to San Diego?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Diego with an airline and back to Knoxville with another airline. Booking your flights between Knoxville and SAN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Knoxville to San Diego?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Diego from Knoxville up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Knoxville to San Diego

 
See real verified KAYAK customer reviews for airlines flying from Knoxville to San Diego. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Knoxville to San Diego? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 11795 reviews
7.8Comfort
7.0Entertainment
8.1Boarding
8.5Crew
7.1Food
Airline reviews

The crew was very friendly. Boarding was quick and efficient.

10.0 ExcellentTina, Jan 2026
PDX - SAN
Read more Alaska Airlines reviews

The crew was very friendly. Boarding was quick and efficient.

No WiFi. Terrible food. Very long walk to the gate and from the gate after landing. Gate changed without notice.

I enjoyed the Starlink access but didn't have much time to use it. It also kept dropping me so I gave up. The food was very good though when I asked for a different "dessert" they didn't have anything. Chocolate Brownie Cookies are not suitable for everyone...maybe children. The flight staff were amazing - at least in First Class! My first time ever! The trip from Boise to San Diego was FAR better than going to Boise.

One of the flight attendants treated my grandma who is 77 years old badly and would respond sarcastically. Example my grandma "do you have and honey by any chance" the flight attendant "does this look like a restaurant to you. She was also very rude to myself and my children giving us attitude and being sarcastic when answering.

we waited for 50 minutes to check a bag and missed a flight. do better.

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.

I usually get upgraded so my experience is usually amazing. I did not get upgraded this time - which was fine - but the wifi had issues, the monitors were going in & out, & (though not Delta's fault) one of the gentlemen next to me desperately needed a shower.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

The crew took good care of us. The flight from ATL to SFO is a longer one, and there were multiple beverage offerings. I like the 757's that Delta uses. Good airplane that is comfortable. I do wish Delta would separate Priority boarding from the better seats. I would gladly take a smaller seat in an open row than be jammed into Comfort just to get priority boarding, just to make sure I don't have to check a bag.

Gate agent rushed to fill hot jetway with crowd so it took over 12 minutes to go from gate to plane. Just like a discount airline Pooly prepared cabin and third time that claim of rough air prevented any cabin service. Friends on a Southwest flight at similar time had service.

I was uncomfortably cold on the plane. Other than that it was uneventful and therefore as enjoyable as a plane ride can be.

Food was surprisingly good but the WiFi was not great

My flight was extremely cold. I had a jacket and a cover was left in each seat. The cover was extremely thin and I have a disability, fibromyalgia and arthrithis and AC air is the worst. I closed my vent and my husbands vent and it still was frigid. I asked the attendant if I could get another cover and she quickly almost dismissively and totally unconcerned stating, (I quote) (one per chair) and walked off so quickly that I didn't get a chance to explain to her that I literally have adisability. I didnt want to make a seen so I set on that flight for over 5 hours in pain, joints locking up and extremely uncomfortable. When my fibromyalgia flares up my joints not only ache but they will lock up also and it takes me days to get back to my regular self even though I take medication for it. I felt like it would not have hurt anyone at all for her to just give me an extra cover because I'm sure they have all types of medical issues in people that fly every day.

Flight arrived 30 min early and bag was waiting at the baggage pickup. United Club HNL was one of the nicest in the system

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

Teeny tiny bathrooms, crew was not realistic about when we'd arrive.

Unbelievably poor service from flight attendants. They didn’t even do water service on a four hour flight. Just disrespectful.

Flight was late - I was downgraded from first class to coach

Even though we were delayed, we were able to make our connection

United needs to step up their game. Delayed flight leaving Seattle, San Francisco. Older aircraft, not very comfortable.

Plane boarded early a quickly, was mostly full. We left close to on time. And landed early.

7 hours delayed due to operational issues on United’s end. Basically laziness.

Flight was timely, relatively comfortable, with decent entertainment and food served. Only problem encountered was with the free messaging which I highly appreciate, but it did not work from iphone to non-iphones.

Amazing I love American. I’ll never fly anyone else if I can help it.

Everything about the flight was lovely. My only suggestion would be to offer a few more options of tv series from Apple TV or HBO.

After the door had been closed, the cockpit makes an announcement that catering is running late and it is not the airline's fault. It is their fault in the sense that we had to sit for 2 hours or more when we could have stayed in the terminal. Poor communications between catering and airline. This caused a young man to lose his temper and he went storming out hitting objects. He had complained to the gate agent that he had already waited at the gate 7 hours and when can the airplane leave? Airilnes do a poor job of explaining delays, maintenance issues, etc. whereas being truthful may gain more sympathy or understanding.

We were told the flight was delayed 5 times, then it was moved to the next day.

The experience with American Airlines was good, although the Philippines Airlines flight was much better (better seats, better food, better entertainment options, overall better). Again, the MIA to LAX flight was fine, but nothing in comparison to the comfort and accommodations of the Philippines Airlines flight from LAX to MNL.

Loved the crew . Absolutely no complaints. Except for luggage lost

Did not get any refreshments. Crew was very nice but limited. Small seats

Wish some foods provided rather than just biscuit/cookie for flight more than 2 hours

Wish a flight with more than 2 hours with some snack rather than just cookie/biscuit.

We are too tired and frustrated to comment politely at this point

Very well recently! Frontier is improving and less harrassing customer on luggages! Positive!

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

I am writing to express my disappointment with my recent Frontier Airlines flight. I was charged $99 at the gate because my bag was said to be too large, yet once onboard there was no available overhead bin space, and I was required to place the bag under the seat in front of me anyway. This made the charge feel unnecessary and unfair. Additionally, before the flight even took off, I was asked to move from the seat I paid for into a middle seat so another passenger and her cat could have my seat to themselves. I was not offered compensation or an explanation for being moved from a paid seat. Between the unexpected bag fee and being forced to give up my seat, this experience fell well below acceptable customer service standards. I would appreciate a review of this situation and appropriate compensation.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

It was ok. It was expensive to check 2 bags ($75.00 per bag), and then it took a long time to wait for shuttle to take us from one terminal to the terminal where the plane was taking off at LAX. And all of this for a flight where we had to pay for any food or drink that was not water.

It didn’t happen. I booked it and then was told it wasn’t available and then forced to pay far higher prices for a worse option

A 630departure flight Delayed 6hours! They changed my gate, I moved to the new gate. Had our flight on the screen for 12noon departure. I go get above to eat, check screen again and the flight was gone, no notice no announcement, nothing!! They sent my bag on the flight I wasn’t on, got it back to me 3days later. Thank goodness they did refund my money but I will NEVER fly them again.

Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.

Plane and crew on board were fine. Everything else was terrible.

The third party booking with cheapflightsfares was awful. Kayak should NOT partner with them. They sold me a bundle including seat selection and carry-on, but did not book the carry-ons with Frontier, so I’m out of pocket for $414 more while I await resolution.

Everything you need to know for your flight from Knoxville to San Diego

Information on your arrival and departure airports