TYS - SAT

$217 Find Cheap Flights from Knoxville to San Antonio

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Knoxville to San Antonio departing on 11/11. 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

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

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

Cheapest round-trip
$217
Overall average: $350
American Airlines
Tue 11/11Sat 11/15
TYS - SAT • 1 stop
Cheapest one-way
Multiple Airlines
Thu 10/9
TYS - SAT • multi-stop
Top airlines
American Airlines
Cheapest • from $217 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 13% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
July
Cheapest • 32% price drop
February
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Antonio!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Knoxville to San Antonio (TYS-SAT)

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

Tue, Nov 11 - Sat, Nov 15
American Airlines Logo
5:10 am - 9:46 amTYS-SAT
5h 36m1 stop
American Airlines Logo
8:17 am - 4:38 pmSAT-TYS
7h 21m1 stop
$217American Airlines
Find Deal
Tue, Nov 18 - Tue, Dec 2
Delta Logo
6:00 pm - 12:38 amTYS-SAT
7h 38m1 stop
Delta Logo
5:09 am - 11:47 amSAT-TYS
5h 38m1 stop
$237Delta
Find Deal
Tue, Nov 4 - Tue, Nov 11
American Airlines Logo
7:20 pm - 12:28 amTYS-SAT
6h 08m1 stop
American Airlines Logo
8:17 am - 2:52 pmSAT-TYS
5h 35m1 stop
$243American Airlines
Find Deal
Thu, Nov 13 - Mon, Nov 17
Multiple Airlines Logo
7:17 pm - 7:30 pmTYS-SAT
25h 13m1 stop
Multiple Airlines Logo
7:37 pm - 10:34 amSAT-TYS
13h 57m1 stop
$247Multiple Airlines
Find Deal
Mon, Nov 17 - Thu, Dec 4
Multiple Airlines Logo
9:29 pm - 10:03 amTYS-SAT
13h 34m1 stop
Multiple Airlines Logo
6:00 am - 9:44 pmSAT-TYS
14h 44m1 stop
$249Multiple Airlines
Find Deal
Tue, Nov 18 - Fri, Dec 5
Delta Logo
5:35 am - 12:10 pmTYS-SAT
7h 35m1 stop
Delta Logo
4:52 pm - 11:50 pmSAT-TYS
5h 58m1 stop
$253Delta
Find Deal
Thu, Nov 13 - Mon, Nov 17
Multiple Airlines Logo
7:17 pm - 7:30 pmTYS-SAT
25h 13m1 stop
Multiple Airlines Logo
7:37 pm - 10:34 amSAT-TYS
13h 57m1 stop
$255Multiple Airlines
Find Deal
Tue, Nov 11 - Sat, Nov 15
United Airlines Logo
4:25 pm - 9:20 pmTYS-SAT
5h 55m1 stop
United Airlines Logo
11:40 am - 8:33 pmSAT-TYS
7h 53m2 stops
$258United Airlines
Find Deal
Mon, Nov 17 - Fri, Dec 5
Multiple Airlines Logo
9:29 pm - 10:03 amTYS-SAT
13h 34m1 stop
Multiple Airlines Logo
6:00 am - 9:49 pmSAT-TYS
14h 49m1 stop
$260Multiple Airlines
Find Deal
Sat, Nov 8 - Sat, Nov 15
United Airlines Logo
11:45 am - 3:29 pmTYS-SAT
4h 44m1 stop
United Airlines Logo
11:40 am - 8:33 pmSAT-TYS
7h 53m2 stops
$278United Airlines
Find Deal
Booking Insights

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

Get data-powered insights and trends into flights from Knoxville to San Antonio to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Knoxville to San Antonio?

The average price of all round-trip flights from Knoxville to San Antonio clicked on KAYAK for each day over the last 12 months.

When flying from Knoxville to San Antonio, you should consider leaving on a Friday and avoid Sundays if you are looking for the best rates. For your return to Knoxville, you’ll find the best rates on Wednesdays and the most expensive ones on Sundays.

What is the cheapest month to fly from Knoxville to San Antonio?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Knoxville to San Antonio, 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 Antonio is July, where tickets cost $248 (return) on average. On the other hand, the most expensive months are October and December, where the average cost of round-trip tickets is $525 and $523 respectively.

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

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 Antonio, 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 Antonio, you should book around 3 weeks before departure, which saves you about 13% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low seasonOctober
Cheapest flight$217
Best time to beat the crowds but there is an average 44% increase in price.
Most popular time to fly and prices are also 21% lower on average.
Flight from Knoxville to San Antonio

When to book flights from Knoxville to San Antonio

Are your dates flexible? Find out the best times to travel from Knoxville to San Antonio 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 Antonio

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

    In the last 3 days, the lowest price for a flight from Knoxville to San Antonio was $217 for a round-trip ticket.

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

    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 Antonio?

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Knoxville to San Antonio are Delta and United Airlines. With an average price for the route of $308 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $401 and an overall rating of 7.4.

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

    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 Antonio.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Antonio 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 Antonio?

    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 Antonio with an airline and back to Knoxville with another airline. Booking your flights between Knoxville and SAT 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 Antonio?

    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 Antonio 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 3 airlines serving from Knoxville to San Antonio

 
See real verified KAYAK customer reviews for airlines flying from Knoxville to San Antonio. 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 Antonio? 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.
7.9
DeltaOverall score based on 7969 reviews
8.2Boarding
8.5Crew
7.9Entertainment
7.9Comfort
7.3Food
Airline reviews

The flight was great. The gate location was way to far away!!!

10.0 ExcellentLauren, Oct 2025JFK - PBI
Read more Delta reviews

The flight was great. The gate location was way to far away!!!

The flight attendant in first class was beyond rude and didn't care at all about her job. AND the gate agent was even worse than the flight attendant for rudeness. She was awful.

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.

Cramped seating for me. Luckily it wasn’t a long flight

Lounge in Lagos is terrible, food on board from Lagos to Atlanta was horrible. Only bright spot the cabin crew were awesome.

The staff and the boarding procedure were all amazing . The one flight was not equipped with WIFI which now adays seems odd. All in all the experience was good

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Crew and customer service were excellent. This flight also had plenty of leg room and seat mounted screens for entertainment. A very pleasant flight all around!

I was in first class. The outlets at my seat did not work. The plane was shabby and run down. I had prepurchsed a day subscription for internet that was not redeemable. I had to repurchase the internet for my flight and then it didn’t work anyway. Quite disappointed in what was supposed to be the launch of a great vacation.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

Armrest controller on my seat 35D and nextbooennseat 35E did not work right. Hard to press buttons to recognize and 35D had constantnpressure either upmost down somit was nearly impossible to make selections. .

I flew with my dog and had already purchased my dog’s ticket. Even that morning I had called costumer service to insure that my husband and I had seats together since the website was giving me an error when choosing our seats and the representative mentioned our dog. I showed up early to the airport and when I got to the gate and we started boarding I was help back and told that I was supposed to have a yellow tag and that I should have checked in at the counter for them to give me that tag. I was not aware of this, the representative on the phone did not say anything. Nor did I see it anywhere in the checking process online, so if you travel with a pet and are not checking in luggage, just know that you still have to go to the check in counter when arriving at the airport unless you want to be the last one to board and not have room for your carry on in the overhead bins. Other than that, I had a great experience.

This flight was perfect. No complaints and only the highest regard for the crew and ground staff and how they executed perfectly. I fly a lot with United and would request predictability and transparency in their operations instead of last minute changes.

This is for UA2274 from Houston to Sacramento. The flight was delayed arriving due to mechanical issues so we left about 3 hours later than scheduled. When boarding the plane the temperature inside was excessive - likely close to 100. Pilot apologized and said it was going to improve at altitude, which it did. But before that I honestly thought there might have been more delays removing passengers made ill from the heat. We were delayed leaving due to another mechanical issue. There was not water on the plane due to a panel that was not secured. They did that quickly, but the combination of mechanical issues was rather disturbing and did not reflect well on United.

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

The woman gate agent in Phoenix was none too sympathetic about my check-in process as I am relatively new with using apps. I almost did not get on because she said I did not check-in. I thought I had via Kayak where I purchased a very expensive ticket. Lesson learned but to be told I may not get on as a matter of factly was difficult to hear.

Gate agent did not hold flight for connection, provided no assistance to get new flight

You can plug your phone in & use their wifi to watch movies, etc, but the plane’s wifi was disconnected for most of the flight.

Very below average , plane from Dallas to Toyko was very poor designed plane. I had to sit for 13 hours next to fat man. Really bad seat and entertainment screen sucked

Full flight so overhead bin space ran out & bags had to be checked. When you’re in the last boarding group, you might as well expect that. Don’t pay to check bags though because when they run out of space for carry-ons, they check your bag to your destination for free. When traveling with children, no need to pay extra for seats, they will assign seats & have to sit your children with you.

American almost always Delays flights from Austin to Dallas and back. I cannot believe they have such poor service on this route. I was about to switch to American from Delta, but they gave me enough reasons not to.

There's nothing I liked about it. For first off I scheduled this trip two weeks in advance then they delayed my flight which messed up my whole trip. So I scheduled it for the following weekend thinking there won't be a delay and guess what as soon as I got to the airport we said in the airplane on the tarmac for an hour and a half. Not only was it delayed I missed my connecting flight meaning I had to stay the night at Dallas-Fort Worth airport sleeping on the floor. I will tell you this I will never fly American airlines ever again I have had nothing but horrible experience with them and I just throw money at them

Having to reschedule flights a day later, they loaded by luggage on the wrong plane from Little rock now I have to HOPE they deliver it to where im staying like they said would. International flight crew was very disgruntled and not very friendly.

The entertainment package was vast and the selections were very current. Keep updating it was great.

Great flight. No issues at all. I still think boarding could be more efficient but otherwise, a good experience.

4 hours late, including over +1 hour waiting in plane to take off. Baggage left behind too.

Our flight was 1.5 hours delayed. There was no weather for the inbound flight, so I don't understand why. This meant a VERY late arrival and only a quick nap before my morning flight.

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

Information on your arrival and departure airports

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