SAT - TYS

$170 Find Cheap Flights from San Antonio to Knoxville

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Antonio to Knoxville departing on 5/5. 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

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Antonio to Knoxville, 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 San Antonio to Knoxville, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Useful Info
Flights Deals

Cheap Flights from San Antonio to Knoxville

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

KAYAK's recommended round-trip deals from the most popular airlines that fly from San Antonio to Knoxville.
Discover the best prices for you by selecting your travel dates on KAYAK.
American Airlines Logo
10:48 am - 5:31 pmSAT-TYS
5h 43m1 stop
American Airlines Logo
6:28 pm - 11:58 pmTYS-SAT
6h 30m1 stop
$217American Airlines
Find Deal
Wed, May 28 - Wed, Jun 4
American Airlines Logo
6:02 pm - 12:13 amSAT-TYS
5h 11m1 stop
American Airlines Logo
4:35 pm - 8:57 pmTYS-SAT
5h 22m1 stop
$233American Airlines
Find Deal
Wed, Sep 3 - Sun, Sep 7
Delta Logo
5:20 am - 11:23 amSAT-TYS
5h 03m1 stop
Delta Logo
7:50 am - 3:05 pmTYS-SAT
8h 15m1 stop
$243Delta
Find Deal
Tue, May 27 - Tue, Jun 3
American Airlines Logo
6:38 am - 12:15 pmSAT-TYS
4h 37m1 stop
American Airlines Logo
4:35 pm - 8:57 pmTYS-SAT
5h 22m1 stop
$249American Airlines
Find Deal
Thu, Sep 4 - Mon, Sep 8
American Airlines Logo
4:43 pm - 11:59 pmSAT-TYS
6h 16m1 stop
American Airlines Logo
5:19 pm - 10:38 pmTYS-SAT
6h 19m1 stop
$253American Airlines
Find Deal
Tue, Jul 8 - Sat, Jul 12
Delta Logo
1:46 pm - 11:04 pmSAT-TYS
8h 18m1 stop
Delta Logo
5:57 pm - 12:17 amTYS-SAT
7h 20m1 stop
$259Delta
Find Deal
Fri, Jun 6 - Thu, Jun 12
 Logo
10:51 pm - 1:24 pmSAT-TYS
13h 33m1 stop
 Logo
4:15 pm - 5:04 amTYS-SAT
13h 49m2 stops
Sun, Jun 1 - Wed, Jun 4
 Logo
6:45 pm - 11:42 amSAT-TYS
15h 57m1 stop
 Logo
9:09 am - 10:51 pmTYS-SAT
14h 42m1 stop
Sun, Jun 1 - Thu, Jun 5
United Airlines Logo
5:30 am - 5:00 pmSAT-TYS
10h 30m2 stops
United Airlines Logo
5:20 pm - 10:58 pmTYS-SAT
6h 38m1 stop
$404United Airlines
Find Deal
Thu, Sep 4 - Mon, Sep 8
United Airlines Logo
2:10 pm - 10:40 pmSAT-TYS
7h 30m1 stop
United Airlines Logo
5:45 am - 5:42 pmTYS-SAT
12h 57m2 stops
$414United Airlines
Find Deal
Wed, May 28 - Wed, Jun 4
Useful Info

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

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

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Antonio to Knoxville, 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 San Antonio to Knoxville is January, where tickets cost $258 (return) on average. On the other hand, the most expensive months are March and November, where the average cost of round-trip tickets is $484 and $400 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Antonio to Knoxville, 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 San Antonio to Knoxville, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low seasonMarch
High seasonJuly
Cheapest flight$170
Best time to beat the crowds but there is an average 34% increase in price.
Most popular time to fly with an average 4% increase in price.
Flight from San Antonio to Knoxville

When to book flights from San Antonio to Knoxville

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

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

    In the last 3 days, the lowest price for a flight from San Antonio to Knoxville was $170 for a one-way ticket and $217 for a round-trip.

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

    No, a passport isn't needed to fly from San Antonio to Knoxville. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from San Antonio to Knoxville?

    San Antonio and Knoxville are both served by 1 main airport. You will leave San Antonio from San Antonio and will be arriving at Knoxville McGhee Tyson.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from San Antonio to Knoxville are Delta and United Airlines. With an average price for the route of $343 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $408 and an overall rating of 7.4.

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

    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 San Antonio to Knoxville.

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

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

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

    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 Knoxville from San Antonio up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top 3 airlines serving from San Antonio to Knoxville

 
See real verified KAYAK customer reviews for airlines flying from San Antonio to Knoxville. 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 San Antonio to Knoxville? 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
DeltaOverall score based on 7936 reviews
7.3Food
8.5Crew
7.9Entertainment
8.2Boarding
7.9Comfort
Airline reviews

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

8.0 ExcellentFredrick, Apr 2025GSO - DTW
Read more Delta reviews

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

The Dekta Rep that checked us in was great. She's very personable, pleasant, and can tell she enjoys her job.

The plane was old with small storage areas that had problems closing/latching and not enough storage for everyone, and worn, damaged seats. Service was great but feel a little unsafe on such well used planes.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

We boarded but then sat there waiting on some missed connection people to get on so we sat for about 15 minutes for that. Then we sat again because the passenger manifest was wrong and they had to figure it out before we could leave. That took about another 20 minutes or so. The crew was working hard to figure it out so it’s not their fault. It ended up being a system glitch where someone was upgraded to first class while another person was also in the same seat and it just created a mess that took a little while to figure out. They literally went to every person on the plane asking their names to see who was sitting in the wrong seat. I also hate the entertainment that must be watched on your phone or tablet. Just give us setback screens. It’s so much better. Almost every Delta flight has this now and it is so nice to have them. The crew did a great job. I have no complaints from them. They were very hard working, even with the mishap and a disgruntled passenger.

My priority checked bag was not loaded on the flight. I had to sit in baggage claim in Las Vegas for 2 1/2 hours waiting for the next flight. All baggage staff were very helpful, tracking showed it as scanned for loading. Nobody told me why it wasn't on my flight.

Had a short delay once we boarded the aircraft in Chicago, but it was fixed in no time flat then we were on our way. The pilot was able to make up the time lost and we landed 5 minute later then schedualed . Great service

Food choices were very limited. Taste of the dishes was average.

It’s been awhile since I have traveled on United. I, along with my family who were on the flight noted how smoothly everything went . Boarding, flight crew and service was excellent.

Oh my gosh, I loved my experience with United! they made me want to travel more often.

How badly can you screw up baggage claim? We were told to go to baggage claim too for our bags from this flight. Another flights bags were there. They finished up. More bags from a different flight arrived. Our bags did not Finally the baggage claim belt stopped working and and are flight was still listed on the arrivals for that baggage claim 2. And then nothing It turns out that they had been delivered not only the United baggage claim but far away on a Delta baggage claim No I never told us. It was only the people looking around who had been on the flight But I’m sure there was plenty of time for the employees to raffle through the bags and steal whatever they wanted

Sucks ! All three flights I was on this trip were delayed.

Long wait before take off without an update for 20 minutes. Flight was good otherwise.

Took off on time and successfully avoided weather that looked to be a problem along the way

I liked everything. Except that my neck was hurting on the seat. I couldn't sleep.

At least it was a short flight. Greyhound with wings.

We were delayed Al ost / hours after boarding so that maintenance had to add oil to the engines. Then the oil they grabbed had been left out in the Dallas record cold and was frozen. They had to go back to the hanger and grab some that was not frozen.

They changed my seat from one that I had paid for as an upgrade to a regular seat at the last minute.

Flight was empty so had a whole row to myself. Still had to wait to get the bag due to the negligence at Palm Springs departure.

late again! but its my only option to not take 9 hours to get to Memphis

Delays on all NY flights. There was no communication on why but they didn’t say it was weather. Other carriers were not delayed.

Everything was on time, we arrived early, everything worked well.

Angela was the best fa ever. She made that 8 hour flight a breeze

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

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.