Cheap Flights from Tri-Cities to San Antonio International

Compare Tri-Cities to San Antonio International flight deals

Find the cheapest month or even day of the year to fly to San Antonio International

Book the best San Antonio International fare with no extra fees

Flight deals from Tri-Cities to San Antonio International

Looking for a cheap last-minute deal or the best return flight from Tri-Cities Airport to San Antonio International Airport? If you want to travel next month, return fares start from R 5,168. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Tri-Cities to San Antonio International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Tri-Cities to San Antonio International flights are currently cheapest in August.

Tri-Cities to San Antonio International: Alternative routes

Compare routes from Tri-Cities to San Antonio below. You may find an airport to fly into that's cheaper, faster, or easier than San Antonio International.

Kingsport to San Antonio: Flight information

The things to know before you go.
Cheapest flight foundR 2,730
Cheapest month to flyAugust

Finding cheap flights from Tri-Cities to San Antonio International: Frequently asked questions

The best price we found for a return flight from Tri-Cities to San Antonio International is R 5,168. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Tri-Cities to San Antonio International. But we found flights with one or more stops from R 5,168.
As of July 2026, there are no flights flying from Tri-Cities to San Antonio International.
The cheapest month to fly from Tri-Cities to San Antonio International is usually August.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Tri-Cities Airport to San Antonio International Airport on Sunday, 2 August 2026.
No airlines currently offer direct flights between Tri-Cities Airport and San Antonio International Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Antonio International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Antonio is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, Delta offers the cheapest flight tickets to San Antonio International.

Flying from Tri-Cities Airport (TRI) to San Antonio International Airport (SAT): what you need to know

  • San Antonio is one hour behind Kingsport and is in the UTC-6 timezone.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are travel rules worth sticking to. Get to the airport on time to catch your TRI to SAT flight.

  • You'll likely experience longer queues in popular months like July. Arriving up to four hours in advance for an international flight and two hours for a domestic departure will give you ample time for security and boarding.

How to find the cheapest flights from Tri-Cities Airport (TRI) to San Antonio International Airport (SAT)

  • The lowest price we've seen for a one-way Tri-Cities Airport to San Antonio International Airport flight is R 2,730. A round-trip fare right now is R 5,168. Depending on the availability when you book, these fares may change.

  • Don't leave everything to the last minute. You're more likely to find cheap tickets from TRI to SAT if you book ahead. Airlines often offer some excellent early bird rates.

  • Getting cheap flights from Tri-Cities Airport to San Antonio International Airport is easier if you're flexible with your trip dates. Use the 'Whole month' search tool to see the best prices across the month and score a great deal.

  • There's no need to check every day to find out if fares have dropped when you create a Price Alert. We'll notify you the moment there's a change in price on cheap flights from TRI to SAT.

  • Select your ideal arrival and departure times, airlines and number of stops with the filters. Or sort your results by 'Cheapest' to find the best deals on flights from Tri-Cities Airport to San Antonio International Airport.

Handy information about Tri-Cities Airport (TRI)

  • The address for TRI is 2525 Tennessee 75.

  • Tri-Cities Airport maintains a strong on-time record, so you're unlikely to face delays. Departures from TRI arrive at their destination as scheduled 81% of the time.

  • To reach Tri-Cities Airport from central Kingsport, it'll take around 15 minutes if you're planning to drive. Of course, this depends on traffic conditions. It's approximately 18 kilometres from the airport to the city centre.

  • Planning to take public transport? You can expect a journey time of around 35 minutes.

  • Catching an early flight from Tri-Cities Airport to San Antonio International Airport? Avoid the hassle of rushing to the airport (and catch some extra z's) by picking one of these stays close to TRI:

Arriving at San Antonio International Airport (SAT)

Getting from San Antonio International Airport (SAT) to central San Antonio

  • SAT is located at 9800 Airport Boulevard.

  • From San Antonio International Airport, San Antonio is approximately 14 kilometres away. It takes around 20 minutes to get to the centre driving.

  • It typically takes 50 minutes if you're using public transport.

When to fly to San Antonio International Airport (SAT)

  • The quietest month for a flight from Tri-Cities Airport to San Antonio International Airport is March, while July is the most popular. Choose the best time to go to San Antonio based on whether you prefer a more relaxed vibe or a faster pace.

  • Lock in your flight from Tri-Cities Airport to San Antonio International Airport for August if you'd like to explore San Antonio during its warmest month. Expect temperatures of between 24ºC (75ºF) and 40ºC (104ºF).

  • Look for cheap tickets from TRI to SAT in January if you like travelling in cooler conditions. Temperatures are at their lowest around then, ranging between 4ºC (39ºF) and 20ºC (68ºF) on average.

Explore more of the United States

  • You've seen San Antonio, now it's time to discover other corners of the United States. Journey around 306 kilometres east to Houston to tick off its top attractions. From The Museum of Fine Arts, Houston, Beck Building to Houston Museum of Natural Science and The Menil Collection, you'll have a full itinerary ahead.

  • Dallas is another must-experience destination in the United States and is around 402 kilometres north-east of San Antonio. No journey is complete without experiencing Meyerson Symphony Centre, Winspear Opera House and Dallas Museum of Art.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.