TYS - SAT

$126 Find Cheap Flights from Knoxville to San Antonio

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 Antonio departing on 7/1. 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 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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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$251
Typical prices: $312-$220
Frontier
Mon 7/13Tue 7/21
TYS - SAT • 1 stop
Cheapest one-way
$126
Typical prices: $169-$204
Frontier
Wed 7/1
TYS - SAT • 1 stop
Top airlines
Cheapest • from $251 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Knoxville and San Antonio. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $262 (round-trip)
Shortest trip • 4h 37m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 16% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 31% price drop
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 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

Mon, Jul 13 - Tue, Jul 21
Frontier Logo
8:19 pm - 6:54 pm
TYS
-
SAT
23h 35m
1 stop
Frontier Logo
7:49 pm - 7:24 pm
SAT
-
TYS
22h 35m
1 stop
$251Frontier
Sun, Sep 6 - Sun, Sep 6
American Airlines Logo
6:00 am - 10:09 am
TYS
-
SAT
5h 09m
1 stop
American Airlines Logo
5:30 pm - 11:18 pm
SAT
-
TYS
4h 48m
1 stop
$257American Airlines
Mon, Jul 13 - Tue, Jul 21
Frontier Logo
8:19 pm - 6:54 pm
TYS
-
SAT
23h 35m
1 stop
Frontier Logo
7:49 pm - 7:24 pm
SAT
-
TYS
22h 35m
1 stop
$261Frontier
Sat, Sep 5 - Wed, Sep 16
American Airlines Logo
6:03 am - 10:09 am
TYS
-
SAT
5h 06m
1 stop
American Airlines Logo
7:00 am - 1:53 pm
SAT
-
TYS
5h 53m
1 stop
$267American Airlines
Tue, Jul 14 - Wed, Jul 15
Southwest Logo
5:40 pm - 11:20 pm
TYS
-
SAT
6h 40m
1 stop
Southwest Logo
12:20 pm - 8:25 pm
SAT
-
TYS
7h 05m
1 stop
$277Southwest
Wed, Jun 24 - Wed, Jul 1
Southwest Logo
12:45 pm - 5:35 pm
TYS
-
SAT
5h 50m
1 stop
Southwest Logo
5:30 am - 5:00 pm
SAT
-
TYS
10h 30m
2 stops
$278Southwest
Sat, Sep 5 - Wed, Sep 16
American Airlines Logo
5:00 am - 9:07 am
TYS
-
SAT
5h 07m
1 stop
American Airlines Logo
7:00 am - 1:06 pm
SAT
-
TYS
5h 06m
1 stop
$279American Airlines
Tue, Jul 14 - Wed, Jul 15
Southwest Logo
12:45 pm - 7:20 pm
TYS
-
SAT
7h 35m
2 stops
Southwest Logo
11:50 am - 9:20 pm
SAT
-
TYS
8h 30m
1 stop
$282Southwest
Tue, Aug 11 - Tue, Aug 25
Southwest Logo
7:00 am - 12:50 pm
TYS
-
SAT
6h 50m
2 stops
Southwest Logo
9:20 am - 7:50 pm
SAT
-
TYS
9h 30m
2 stops
$287Southwest
Sat, Sep 5 - Wed, Sep 16
American Airlines Logo
5:00 am - 9:07 am
TYS
-
SAT
5h 07m
1 stop
American Airlines Logo
5:00 am - 1:06 pm
SAT
-
TYS
7h 06m
1 stop
$289American Airlines
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.

How much is a round-trip flight from Knoxville to San Antonio?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Knoxville to San Antonio departing in July.

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 $242 (return) on average. On the other hand, the most expensive months are June and October, where the average cost of round-trip tickets is $538 and $435 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 4 weeks before departure, which saves you about 16% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low seasonOctober
Cheapest flight$126
Best time to beat the crowds but there is an average 24% increase in price.
Most popular time to fly with an average 54% increase in price.
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 7 days, the lowest price for a flight from Knoxville to San Antonio was $126 for a one-way ticket and $251 for a round-trip.

  • 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 Southwest?

    The two airlines most popular with KAYAK users for flights from Knoxville to San Antonio are Delta and Southwest. With an average price for the route of $361 and an overall rating of 7.9, Delta is the most popular choice. Southwest is also a great choice for the route, with an average price of $512 and an overall rating of 7.9.

  • 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 4 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
SouthwestOverall score based on 4270 reviews
8.6Crew
7.5Entertainment
7.0Food
8.0Comfort
8.1Boarding
Airline reviews

One major problem that was very unprofessional and uncalled for. Plane landed and we had to wait 20 minutes to get off the plane since they were waiting for someone to come to the gate to drive the jetway. Southwest couldn't have someone available and waiting for the plane to land? Is there only one person in Hobby airport who knows to drive the jetway? Was he at lunch? In the bar? Uncomfortable and uncalled for!

4.0 OkayAnonymous, May 2026
MSY - HOU
Read more Southwest reviews

One major problem that was very unprofessional and uncalled for. Plane landed and we had to wait 20 minutes to get off the plane since they were waiting for someone to come to the gate to drive the jetway. Southwest couldn't have someone available and waiting for the plane to land? Is there only one person in Hobby airport who knows to drive the jetway? Was he at lunch? In the bar? Uncomfortable and uncalled for!

I'm glad it wasn't only 75% full because I could get a good seat

We waited in the airplane for over 45 min for a southwest employee to make the flight. This cause over half the plane to miss their connecting flight in Denver. When we confronted the desk upon arrival, they told us the only flight they had was the next day leaving at 8:50 pm!!! Or they offered to get us to Burbank or LA, but after that we were on our own to get back to Santa Barbara. I paid for a flight from sba to bna bna to sba. My re entry into mom mode has been 💯 rough because of southwest mistake with my flight. And now I’m leaving to Reno tomorrow for a vballl tournament and just discovered that my leg in Vegas has me and my 3 kids on a stand by flight even though I had booked these ticket last year November!! Do better southwest!

Southwest is kind of a slum airline. It’s gotten more expensive over the years for less and less service. I am a Southwest Chase Visa card holder and was forced to choose a seat in the 26th row in the middle seat. However my wife who is a rewards member but doesn’t hold a card or anything else, gets randomly assigned a normally paid seat in row 6! How does that work?

The seat was not comfortable. 1D. My back was sore all night and the next day.

One of the best airlines for fast boarding, on time arrivals, and top notch service!

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

Snacks are always pretzels. Why can't you also offer peanuts ?

Flight was hours late, unable to sit next to spouse, I have had so much better experiences. Substantially better, only saving grace was that it was a short flight.

Planes were clean, no water or snacks on either flight.

Free & relatively fast Wi-Fi. Would've liked a wider drink selection.

I continue to be satisfied with Delta’s excellent service out of LGA. The digit id works well and gets me through security in no time. Whenever possible, I choose Delta.

Was revoked with Jet Blue due to delay from Kenya Air

Enjoyed it very much. Especially liked the free WiFi that Delta offers.

Smooth flight. Left on time, and got in 15 minutes early. Onboard video was great

For some reason, TSA Atlanta didn’t have my bag on the flight on time and they don’t have to provide Delta a reason for that.

WiFi didn’t work on two of four planes. Flight attendants were not overly friendly or welcoming. Planes were extremely slow to board and deplane.

Delta does a great job with entertainment and free wifi. I can still be in touch with my colleagues while in the air.

Aside from a completely packed plane, I really have no complaints.

The flight had a delay but I made it to my connection. Flight was smooth overall

Our flight to Rome, Italy was cancelled the day of and we were never informed. We only found out because I was trying to get into my husbands account and called to get his account number. Had to pay more for worse seating on another airline.

No screens or meal options. Freezing cold. Dirty seats. Left late.

Overall flight was ok. Flight attendant was receptive to assisting passengers with tight connections.

This was the first flight in the morning. We boarded fine. The cabin door was closed and we were ready to go. We were notified by the Captain that ATC issued and ground stop for 40 minutes. So, without even pushing back from the gate, we were already 40 minutes late. We actually were released to push-back and taxi at 30 minutes. But, some passengers had tight connections and were not going to make their connections. Some passengers asked about the delay and the effect on the connections and were told by the cabin attendant that all flights will be delayed and so they should be OK. However, that was not true. My connecting flight was on time and I arrived at IAH with 21 minutes to make my connection. I did and I'm happy about that, but the flight crew should not have given assurances to the passengers who might have missed their connections.

Boarding was again a "free for all". We were boarding group 4, and almost the entire plane was able to board before us. It's a shame that someone who follows the rules, gets the short end of the stick. Not fair.

Fine. The issues I had were associated with luggage being delayed from Turkey to Tanzania

We purchase first class seats for the first time for multiples of standard economy ticket. There was no access to the club lounge and no priority boarding. The meal and the service once on the plane were superior and the seat was nicer, but not worth the price difference. I will be happy to seat in economy and spend the difference on more travel.

It isvvery small flight. No leg room . No space to put my personal item at feet.

My flight was canceled a few hours before boarding. I was rebooked on Copa airlines and missed an important meeting .

We got delayed getting out of DFW for broken overhead bins. Once the flight got underway the captain kept the seatbelt sign lit the entire flight despite little perceptible turbulence, preventing use of the rest rooms and any sort of refreshment service in the main cabin.

There were flight delays making our flight arrive at our destination after midnight didn’t seem to have enough crew or airplanes for the flights laid over in Dallas should’ve had plenty of time to make it to our next flight only made it because that flight was also delayed because our plane wasn’t even at the airport yet overall have not had a good experience on American

Seat comfort was poor (no lumbar or lower back support).

The passenger in front of of me reclined their seat back all the way the entire flight. Their headrest was in my face the entire flight! I barely had room for the little plastic cup of water to fit on my tray table; can you make the seats and space between the rows any smaller??? You can’t even get up to use the restroom! Worst flight I’ve had in a very long time!

My Frequent Flyer nber wasn't put on as I was told it was..... This resulted in a last group boarding and no priority tags on My bags.

Cancelled the flight half hour before boarding. Then cancelled the connecting flight too.

I would like a refund for the extra cost the seat I paid for. An oversized person sat next to me and I couldn’t fit on my seat and had to move to another seat.

This was a hard flight. 3 delays out of OKC (1 on the Tarmac). Delay in Atlanta coming to Dallas. total travel time was the equivalent of driving from OKC to Atlanta.

Got home at 3am after deboarding the plane. No compensation offered by American

Flights on time w/o delays. However, my baggage was damaged. Ground crew, throws baggage from plane to the baggage carrier, carelessly.

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

Information on your arrival and departure airports