Cheap flights from Knoxville to San Antonio

Flights overview

Useful information for finding cheap flights from Knoxville to San Antonio and booking your next trip
Cheapest round-trip flights $185
Frontier 1 stop 24 hr Mon, Jun 8 — Tue, Jun 16
The cheapest round-trip flight from Knoxville to San Antonio is currently $185
Cheapest one-way flight $101
Frontier 1 stop 24 hr Wed, Jul 29
The cheapest one-way flight from Knoxville to San Antonio is currently $101
Last-minute weekend getaway $333
Frontier 1 stop 24 hr Fri, May 8 — Sun, May 10
The cheapest last-minute weekend getaway from Knoxville to San Antonio is currently $333
Cheapest business class flights $508
Frontier 1 stop 24 hr Fri, Jul 31 — Sun, Aug 9
The cheapest business class round-trip flight from Knoxville to San Antonio is currently $508
Fastest flight 4 hr 5 min The fastest flight with stops from Knoxville to San Antonio takes 4 hr 5 min
Nonstop flights None There are no direct flights on this route.

When is the cheapest time to fly?

The cheapest month to fly from Knoxville to San Antonio is typically January. The most expensive month to fly is typically March.
January
Cheapest
Typical prices: $225–365
March
Most expensive
Typical prices: $250–440

Popular airlines from Knoxville to San Antonio

  • American
    from $274
    Typical price: $245–470
    585 weekly connecting flights
    TYS - SAT Every day
  • Delta
    from $267
    Typical price: $260–610
    301 weekly connecting flights
    TYS - SAT Every day
  • United
    from $275
    Typical price: $270–590
    201 weekly connecting flights
    TYS - SAT Every day
  • Southwest
    from $320
    Typical price: $295–460
    189 weekly connecting flights
    TYS - SAT Every day
  • Frontier
    from $180
    Typical price: $225–630
    2 weekly connecting flights
    TYS - SAT Every Fri, Sun

Popular airports near Knoxville

  • McGhee Tyson Airport (TYS)
    Knoxville United States 21 min 11 mi
  • Nashville International Airport (BNA)
    Nashville United States 2 hr 38 min 154 mi
  • Hartsfield-Jackson Atlanta International Airport (ATL)
    Atlanta United States 3 hr 23 min 163 mi
  • Chattanooga Metropolitan Airport (CHA)
    Chattanooga United States 1 hr 39 min 96 mi

Popular airports near San Antonio

  • San Antonio International Airport (SAT)
    San Antonio United States 19 min 7 mi
  • Austin-Bergstrom International Airport (AUS)
    Austin United States 1 hr 21 min 72 mi
  • George Bush Intercontinental Airport (IAH)
    Houston United States 3 hr 9 min 193 mi
  • William P. Hobby Airport (HOU)
    Houston United States 3 hr 14 min 193 mi

Frequently asked questions about flying from Knoxville to San Antonio

The cheapest flights from Knoxville to San Antonio are usually in January. Typical ticket prices in January range from $225 to $365.
The cheapest round-trip flight from Knoxville to San Antonio recently found on Google Flights was with Frontier from $185. The cheapest one-way flight was with Frontier from $101.

Some of the cheapest round-trip deals we found with different airlines:
  • The cheapest American flight from Knoxville to San Antonio is $274, flying from May 28 to Jun 6.
  • The cheapest Delta flight from Knoxville to San Antonio is $267, flying from Aug 1 to Aug 8.
  • The cheapest United flight from Knoxville to San Antonio is $275, flying from Aug 1 to Aug 8.
  • The cheapest Southwest flight from Knoxville to San Antonio is $320, flying from Aug 1 to Aug 7.
  • The cheapest Frontier flight from Knoxville to San Antonio is $180, flying from May 29 to Jun 7.
The cheapest round-trip flight from Knoxville to San Antonio starts at $185 from Mon, Jun 8 to Tue, Jun 16. The cheapest one-way flight starts at $101 and departs on Wed, Jul 29.
4 hr 5 min is the shortest flight time from Knoxville to San Antonio.
San Antonio has mild winters (Dec–Feb), and hot and humid summers (Jun–Sep). Summer, as well as warm spring (Mar–May) are the most popular times to visit. Remember the Alamo Weekend (Mar) sees reenactments of the battle. Fiesta San Antonio (Apr), a long-standing heritage festival, is a huge, 11-day party known for its flower parades, live music and food stands.
It's easy to use Google Flights to find the cheapest days to fly from Knoxville to San Antonio.
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.

You can also turn on price tracking to get alerts if the price changes for a route or flight.
What counts as the best airline for your flights from Knoxville to San Antonio really depends on your individual needs. You may have a favorite carrier or a loyalty program you like, but price, convenience, and airports served also come into play. Flexibility and booking terms – Can you change flights if you want to stay longer or get a refund if you have to postpone your trip? – are also factors that help determine which airline is best to fly from Knoxville to San Antonio.

In terms of flights, American is the most popular. American offers 585 connecting flights per week. American flies from McGhee Tyson Airport (TYS) to San Antonio International Airport (SAT) .

Other popular airlines flying from Knoxville to San Antonio are:
  • Delta offers 301 connecting flights per week. Delta flies from McGhee Tyson Airport (TYS) to San Antonio International Airport (SAT) .
  • United offers 201 connecting flights per week. United flies from McGhee Tyson Airport (TYS) to San Antonio International Airport (SAT) .
  • Southwest offers 189 connecting flights per week. Southwest flies from McGhee Tyson Airport (TYS) to San Antonio International Airport (SAT) .
  • Frontier offers 2 connecting flights per week. Frontier flies from McGhee Tyson Airport (TYS) to San Antonio International Airport (SAT) .
The number of connecting flights refers to distinct flights with at least one stop between Knoxville and San Antonio.
The cheapest round-trip flight from Knoxville to San Antonio recently found on Google Flights was with Frontier from $185. The cheapest one-way flight was with Frontier from $101.

Some of the cheapest round-trip deals we found with different airlines:
  • The cheapest American flight from Knoxville to San Antonio is $274, flying from May 28 to Jun 6.
  • The cheapest Delta flight from Knoxville to San Antonio is $267, flying from Aug 1 to Aug 8.
  • The cheapest United flight from Knoxville to San Antonio is $275, flying from Aug 1 to Aug 8.
  • The cheapest Southwest flight from Knoxville to San Antonio is $320, flying from Aug 1 to Aug 7.
  • The cheapest Frontier flight from Knoxville to San Antonio is $180, flying from May 29 to Jun 7.
No airline flies direct from Knoxville to San Antonio.
  • There are 585 American connecting flights from Knoxville to San Antonio per week. Flights are available every day.
  • There are 301 Delta connecting flights from Knoxville to San Antonio per week. Flights are available every day.
  • There are 201 United connecting flights from Knoxville to San Antonio per week. Flights are available every day.
  • There are 189 Southwest connecting flights from Knoxville to San Antonio per week. Flights are available every day.
  • There are 2 Frontier connecting flights from Knoxville to San Antonio per week. Flights are available on Friday and Sunday.
Use the Stops filter while searching for flights, to see only nonstop options in your results.
The cheapest last-minute deal between Knoxville and San Antonio at price $333 is offered by Frontier from Fri, May 8 to Sun, May 10.
No airline flies direct from Knoxville to San Antonio.
  • There are 585 American connecting flights from Knoxville to San Antonio per week. Flights are available every day.
  • There are 301 Delta connecting flights from Knoxville to San Antonio per week. Flights are available every day.
  • There are 201 United connecting flights from Knoxville to San Antonio per week. Flights are available every day.
  • There are 189 Southwest connecting flights from Knoxville to San Antonio per week. Flights are available every day.
  • There are 2 Frontier connecting flights from Knoxville to San Antonio per week. Flights are available on Friday and Sunday.
Use the Stops filter while searching for flights, to see only nonstop options in your results.
There are no direct flights from Knoxville to San Antonio.
It's easy to find nonstop flights with Google Flights! Once you've searched for flights from Knoxville to San Antonio, just select the nonstop flights only option in the 'Stops’ filter in the search form and view all available direct flights and their prices.
The cheapest business class round-trip flights between Knoxville and San Antonio start at $508 from Fri, Jul 31 to Sun, Aug 9 with Frontier.
The cheapest economy class round-trip flights between Knoxville and San Antonio start at $185 from Mon, Jun 8 to Tue, Jun 16.
To book business class trips from Knoxville to San Antonio, look for the default Economy selection at the top, and change it to your desired cabin class such as Premium Economy, Business Class, or First Class. You can then select your departure and arrival dates, consider available options, and book your business travel.

You can also adjust the trip type to view one-way fares.
The best last-minute getaway deal for the next weekend between Knoxville and San Antonio starts at $333 from Fri, May 8 to Sun, May 10 with Frontier.
The cheapest last-minute deal between Knoxville and San Antonio at price $333 is offered by Frontier from Fri, May 8 to Sun, May 10.
To find last-minute flight deals from Knoxville to San Antonio, start by entering the city names, select the desired departure and return dates, and hit the Search button to view flight options.

You can check for last-minute flights for the same day or adjust the trip type to see one-way fares.

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