The cheapest times to fly from TYS to SLP are

  • January 1st to March 25th (except the week of March 12th)
  • April 23rd to May 6th
  • October 15th to December 9th (except the week of November 19th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from TYS to SLP is mid January. Prices can be as high as $1056 for Sunday flights during mid December, or as low as $512 for Tuesday flights around mid January.


When to Fly to San Luis Potosí

Flying from Knoxville, TN (TYS) to San Luis Potosi (SLP) will usually cost between $566 to $800 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid January with an average ticket price of $551. Due to high demand the most expensive time to fly is mid December, with an average price of $872. Planning your trip to low-cost times can easily save you $321 on economy flights and even more on first-class flights. Generally, any price below $650 can be considered a good price for a round-trip TYS to SLP flight.

See below for a graph of average weekly prices for the TYS to SLP route. All prices are for round-trip tickets in USD.

TYS to SLP Flight Prices

Compared to other flights, the TYS to SLP flight is cheaper than the average and costs less than the average flight leaving from Knoxville. The average price per mile (for a direct flight) is $0.29, which is below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to fly to SLP, and Wednesday the cheapest day to fly back into TYS. Sundays are the most expensive days to fly to San Luis Potosí, and Fridays are the most expensive days to return to Knoxville. Selecting flights on the least expensive days could save you up to $66 (9%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $603. Return trip prices are from the SLP to TYS flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from TYS to SLP can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 3 hour 28 minutes may not be realistic.


Flight Hacking TYS to SLP

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from TYS to SLP — but Champion Traveler does!

Hack #1: Mexico City (TYS > MEX > SLP)

  • Price for both tickets: $636
  • Average savings: $14 (2.15%)

See TYS to MEX flights


Flight Questions Answered

Still have questions about flying from TYS to SLP? We’ve got answers.

Which airlines fly this route?

You can find 4 major airlines flying this route most often: Aeromexico, American, Delta, United, and potentially more during busy seasons.

How far away is it from Ponciano Arriaga International Airport to McGhee Tyson Airport?

The distance between the two airports is roughly 1383 miles or 2226 kilometers.

How long does it take to fly from TYS to SLP?

The real-world flight time for a nonstop TYS to SLP flight is about 3 hour 28 minutes.

How many flights go between Knoxville, TN and San Luis Potosi?

It depends on the day of the week and the date, but a typical day might have around 18 available flights from TYS to SLP.


Airport Location Info


Departing Airport

Origination codeTYS
Origination airport nameMcGhee Tyson Airport
CityKnoxville, TN
Countrythe United States

Return Airport

Destination codeSLP
Destination airport namePonciano Arriaga International Airport
CitySan Luis Potosi


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.