$149+ Cheap flights from Knoxville to San Antonio (TYS - SAT)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/30. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SAT
Jul 4 — Jul 111
Round-trip
1 adult, Economy
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Find cheap flights from Knoxville to San Antonio with Cheapflights
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Knoxville to San Antonio
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Best
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Cheapest flights from Knoxville to San AntonioExplore the most affordable flight options available from Knoxville to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 4, 2026.
Explore the most affordable flight options available from Knoxville to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 4, 2026.
This American Airlines deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:50 pm
TYS
- SAT
1 stop5h 04m
American Airlines
Wed 9/1612:15 pm
SAT
- TYS
1 stop7h 51m
American Airlines
Deal found 5/31![American Airlines logo]()
$238
This Delta deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:41 pm
TYS
- SAT
1 stop5h 47m
Delta
Mon 8/315:45 pm
SAT
- TYS
1 stop5h 07m
Delta
Deal found 6/1![Delta logo]()
$259
This United Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:00 am
TYS
- SAT
2 stops9h 43m
United Airlines
Sat 9/124:12 pm
SAT
- TYS
1 stop4h 33m
United Airlines
Deal found 6/1![United Airlines logo]()
$264
This Kiwi.com deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/275:38 pm
TYS
- SAT
1 stop19h 20m
Multiple Airlines
Fri 10/212:38 pm
SAT
- TYS
1 stop8h 56m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$277
This Booking.com deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/38:32 pm
TYS
- SAT
1 stop23h 24m
Frontier
Sun 7/57:43 pm
SAT
- TYS
1 stop22h 41m
Frontier
Deal found 6/4![Frontier logo]()
$282
This American Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/2410:00 am
TYS
- SAT
1 stop7h 57m
American Airlines
Wed 8/126:00 am
SAT
- TYS
1 stop5h 56m
American Airlines
Deal found 6/1![American Airlines logo]()
$288
This Delta deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/305:45 am
TYS
- SAT
1 stop4h 59m
Delta
Fri 10/21:31 pm
SAT
- TYS
1 stop5h 36m
Delta
Deal found 5/31![Delta logo]()
$294
This American Airlines deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/305:33 pm
TYS
- SAT
1 stop6h 32m
American Airlines
Tue 7/75:01 am
SAT
- TYS
1 stop6h 52m
American Airlines
Deal found 6/3![American Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/306:55 pm
TYS
- SAT
1 stop6h 00m
Southwest
Tue 7/76:10 am
SAT
- TYS
2 stops6h 55m
Southwest
Deal found 6/2![Southwest logo]()
$302
This Delta deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/45:45 am
TYS
- SAT
1 stop5h 03m
Delta
Sat 8/86:23 am
SAT
- TYS
1 stop5h 05m
Delta
Deal found 5/31![Delta logo]()
$313
Best flights from Knoxville to San AntonioDiscover carefully curated flight deals from Knoxville to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 4, 2026.
Discover carefully curated flight deals from Knoxville to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 4, 2026.
This Delta deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1112:00 pm
TYS
- SAT
1 stop4h 28m
Delta
Sun 11/158:00 am
SAT
- TYS
1 stop6h 05m
Delta
Deal found 5/31![Delta logo]()
$328
This Southwest deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/37:00 am
TYS
- SAT
2 stops7h 00m
Southwest
Tue 10/66:50 am
SAT
- TYS
1 stop4h 15m
Southwest
Deal found 6/1![Southwest logo]()
$352
This United Airlines deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/52:21 pm
TYS
- SAT
1 stop6h 37m
United Airlines
Wed 9/165:30 am
SAT
- TYS
2 stops10h 28m
United Airlines
Deal found 5/31![United Airlines logo]()
$434
This Delta deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/235:30 am
TYS
- SAT
1 stop6h 56m
Delta
Sun 10/254:25 pm
SAT
- TYS
1 stop6h 21m
Delta
Deal found 5/31![Delta logo]()
$359
This Southwest deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/36:40 am
TYS
- SAT
2 stops8h 50m
Southwest
Mon 8/106:00 am
SAT
- TYS
2 stops6h 25m
Southwest
Deal found 6/2![Southwest logo]()
$373
This Delta deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/26:08 pm
TYS
- SAT
1 stop7h 25m
Delta
Sun 7/56:40 am
SAT
- TYS
1 stop5h 39m
Delta
Deal found 6/2![Delta logo]()
$359
This United Airlines deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/246:00 am
TYS
- SAT
2 stops10h 39m
United Airlines
Wed 8/125:30 am
SAT
- TYS
2 stops10h 28m
United Airlines
Deal found 5/30![United Airlines logo]()
$477
This Southwest deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/36:40 am
TYS
- SAT
2 stops8h 50m
Southwest
Sun 7/59:45 am
SAT
- TYS
2 stops10h 35m
Southwest
Deal found 6/4![Southwest logo]()
$443
This Delta deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/196:08 pm
TYS
- SAT
1 stop7h 25m
Delta
Mon 6/224:15 pm
SAT
- TYS
1 stop6h 39m
Delta
Deal found 6/1![Delta logo]()
$447
Last-minute flights from Knoxville to San AntonioDiscover last-minute flight deals from Knoxville to San Antonio. Data last updated June 4, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to San Antonio. Data last updated June 4, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/128:32 pm
TYS
- SAT
1 stop23h 24m
Frontier
Tue 6/167:51 pm
SAT
- TYS
1 stop22h 46m
Frontier
Deal found 6/1![Frontier logo]()
$333
This Booking.com deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/198:32 pm
TYS
- SAT
1 stop23h 24m
Frontier
Sun 6/217:51 pm
SAT
- TYS
1 stop22h 46m
Frontier
Deal found 6/1![Frontier logo]()
$323
This Booking.com deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/298:32 pm
TYS
- SAT
1 stop23h 24m
Frontier
Thu 7/27:51 pm
SAT
- TYS
1 stop22h 46m
Frontier
Deal found 6/1![Frontier logo]()
$329
This American Airlines deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/305:33 pm
TYS
- SAT
1 stop6h 32m
American Airlines
Tue 7/75:01 am
SAT
- TYS
1 stop6h 52m
American Airlines
Deal found 6/3![American Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/306:55 pm
TYS
- SAT
1 stop6h 00m
Southwest
Tue 7/76:10 am
SAT
- TYS
2 stops6h 55m
Southwest
Deal found 6/2![Southwest logo]()
$302
This Booking.com deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/38:32 pm
TYS
- SAT
1 stop23h 24m
Frontier
Sun 7/57:43 pm
SAT
- TYS
1 stop22h 41m
Frontier
Deal found 6/4![Frontier logo]()
$282
This Southwest deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/76:55 pm
TYS
- SAT
1 stop6h 00m
Southwest
Fri 7/103:45 pm
SAT
- TYS
1 stop5h 50m
Southwest
Deal found 5/31![Southwest logo]()
$328
This American Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/2410:00 am
TYS
- SAT
1 stop7h 57m
American Airlines
Wed 8/126:00 am
SAT
- TYS
1 stop5h 56m
American Airlines
Deal found 6/1![American Airlines logo]()
$288
One-way flights from Knoxville to San AntonioSearch for one-way flight options from Knoxville to San Antonio. Find affordable one-way fares based on user searches. Data last updated June 4, 2026.
Search for one-way flight options from Knoxville to San Antonio. Find affordable one-way fares based on user searches. Data last updated June 4, 2026.
This Delta deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/3011:55 am
TYS
- SAT
1 stop6h 37m
Delta
Deal found 5/31![Delta logo]()
$149
This Southwest deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2112:45 pm
TYS
- SAT
2 stops11h 15m
Southwest
Deal found 6/3![Southwest logo]()
$175
This Southwest deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/712:45 pm
TYS
- SAT
2 stops11h 15m
Southwest
Deal found 6/1![Southwest logo]()
$180
This Delta deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/67:46 pm
TYS
- SAT
1 stop5h 47m
Delta
Deal found 5/31![Delta logo]()
$186
This Southwest deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/3012:45 pm
TYS
- SAT
2 stops7h 35m
Southwest
Deal found 5/31![Southwest logo]()
$191
This Booking.com deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/158:32 pm
TYS
- SAT
1 stop23h 24m
Frontier
Deal found 6/2![Frontier logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/1510:03 pm
TYS
- SAT
2 stops23h 08m
Multiple Airlines
Deal found 6/2![Multiple Airlines logo]()
$203
This American Airlines deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/55:00 am
TYS
- SAT
1 stop5h 02m
American Airlines
Deal found 5/31![American Airlines logo]()
$209
This American Airlines deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/138:11 pm
TYS
- SAT
1 stop4h 48m
American Airlines
Deal found 5/31![American Airlines logo]()
$241
This Kiwi.com deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/612:40 pm
TYS
- SAT
3 stops31h 04m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$248
This Kiwi.com deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/74:20 pm
TYS
- SAT
3 stops29h 17m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$252
Find flight deals from Knoxville to San Antonio
Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) to San Antonio (SAT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $238 (American Airlines) |
One-way from | $149 (Delta) |
Popular in | June |
Cheapest in | July |
Average price | $538 |
Cheapflights Fare Finder
Customize your flight search to find flights from Knoxville to San Antonio that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 4, 2026.
Use the filters below to find and compare flights from Knoxville to San Antonio that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
KnoxvilleSan Antonio
TYS - SAT
TYSSAT
Knoxville McGhee Tyson
Wed 11/11
12:00 pm-3:28 pm
1 stop4h 28m
San Antonio
Sun 11/15
8:00 am-3:05 pm
1 stop6h 05m
$328
KnoxvilleSan Antonio
TYS - SAT
TYSSAT
Knoxville McGhee Tyson
Sat 10/3
7:00 am-1:00 pm
2 stops7h 00m
San Antonio
Tue 10/6
6:50 am-12:05 pm
1 stop4h 15m
$352
KnoxvilleSan Antonio
TYS - SAT
TYSSAT
Knoxville McGhee Tyson
Fri 10/23
5:30 am-11:26 am
1 stop6h 56m
San Antonio
Sun 10/25
4:25 pm-11:46 pm
1 stop6h 21m
$359
KnoxvilleSan Antonio
TYS - SAT
TYSSAT
Knoxville McGhee Tyson
Thu 7/2
6:08 pm-12:33 am
1 stop7h 25m
San Antonio
Sun 7/5
6:40 am-1:19 pm
1 stop5h 39m
$359
KnoxvilleSan Antonio
TYS - SAT
TYSSAT
Knoxville McGhee Tyson
Mon 8/3
6:40 am-2:30 pm
2 stops8h 50m
San Antonio
Mon 8/10
6:00 am-1:25 pm
2 stops6h 25m
$373
KnoxvilleSan Antonio
TYS - SAT
TYSSAT
Knoxville McGhee Tyson
Sat 9/5
2:21 pm-7:58 pm
1 stop6h 37m
San Antonio
Wed 9/16
5:30 am-4:58 pm
2 stops10h 28m
$434
KnoxvilleSan Antonio
TYS - SAT
TYSSAT
Knoxville McGhee Tyson
Fri 7/3
6:40 am-2:30 pm
2 stops8h 50m
San Antonio
Sun 7/5
9:45 am-9:20 pm
2 stops10h 35m
$443
KnoxvilleSan Antonio
TYS - SAT
TYSSAT
Knoxville McGhee Tyson
Fri 6/19
6:08 pm-12:33 am
1 stop7h 25m
San Antonio
Mon 6/22
4:15 pm-11:54 pm
1 stop6h 39m
$447
KnoxvilleSan Antonio
TYS - SAT
TYSSAT
Knoxville McGhee Tyson
Fri 7/24
6:00 am-3:39 pm
2 stops10h 39m
San Antonio
Wed 8/12
5:30 am-4:58 pm
2 stops10h 28m
$477
Cheapest one-way
KnoxvilleSan Antonio
TYS - SAT
TYSSAT
Knoxville McGhee Tyson
Tue 7/7
5:40 am-9:43 am
1 stop5h 03m
$149
Showing 1-10 of 19 resultsSorted by cheapest first
Compare providers for flights from Knoxville to San Antonio
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Knoxville to San Antonio in June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Knoxville-San Antonio flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Knoxville-San Antonio flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Knoxville-San Antonio flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Knoxville-San Antonio flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Knoxville-San Antonio flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Knoxville to San Antonio
Have a flexible travel schedule? Discover the best time to fly to San Antonio from Knoxville with our price prediction graph.
TYS-SAT
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Knoxville to San Antonio
How far ahead should I book a flight from Knoxville to San Antonio?
To ensure you get the cheapest price possible for a flight from Knoxville to San Antonio, you should look to book at least 6 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Knoxville to San Antonio?
Currently, July is the cheapest month in which you can book a flight from Knoxville to San Antonio (average of $242). Flying from Knoxville to San Antonio in June is currently the most expensive (average of $538). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Knoxville to San Antonio?
Reviews of airlines servicing San Antonio
Get insights into the airlines that provide service to San Antonio. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Antonio. Reviews last updated June 4, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andUnited Airlines from Knoxville to San Antonio to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Entertainment
7.5
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Entertainment
7.5
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Entertainment
7.5
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Entertainment
7.5
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Related info for your journey
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Knoxville and San Antonio flights
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Top 4 airlines flying from Knoxville to San Antonio
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$216 | Average$512 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$236 | Average$330 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$244 | Average$338 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$264 | Average$393 | FlexibilityNo cancel fee | On-timeN/A |