The cheapest times to fly from SLP to GEG are

  • January 8th to February 18th
  • April 16th to June 3rd
  • October 15th to December 2nd (except the week of November 12th)

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 SLP to GEG is early November. Prices can be as high as $1064 for Sunday flights during early January, or as low as $646 for Tuesday flights around early November.


When to Fly to Spokane

Flying from San Luis Potosi (SLP) to Spokane, WA (GEG) will usually cost between $646 to $906 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early November with an average ticket price of $646. Due to high demand the most expensive time to fly is early January, with an average price of $919. Planning your trip to low-cost times can easily save you $273 on economy flights and even more on first-class flights. Generally, any price below $672 can be considered a good price for a round-trip SLP to GEG flight.

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

SLP to GEG Flight Prices

Compared to other flights, the SLP to GEG flight is cheaper than the average and costs less than the average flight leaving from San Luis Potosí. The average price per mile (for a direct flight) is $0.21, which is below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Sundays are the most expensive days to fly to Spokane, and Fridays are the most expensive days to return to San Luis Potosí. Selecting flights on the least expensive days could save you up to $97 (12%) 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 $655. Return trip prices are from the GEG to SLP 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 SLP to GEG can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 4 hour 33 minutes may not be realistic.


Flight Hacking SLP to GEG

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 SLP to GEG — but Champion Traveler does!

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

  • Price for both tickets: $671
  • Average savings: $2 (0.22%)

See SLP to flights


Flight Questions Answered

Still have questions about flying from SLP to GEG? 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 Spokane International Airport to Ponciano Arriaga International Airport?

The distance between the two airports is roughly 1979 miles or 3185 kilometers.

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

The real-world flight time for a nonstop SLP to GEG flight is about 4 hour 33 minutes.

How many flights go between San Luis Potosi and Spokane, WA?

It depends on the day of the week and the date, but a typical day might have around 37 available flights from SLP to GEG.


Airport Location Info


Departing Airport

Origination code SLP
Origination airport name Ponciano Arriaga International Airport
City San Luis Potosi
Country Mexico
Latitude 22.3
Longitude -100.9

Return Airport

Destination code GEG
Destination airport name Spokane International Airport
City Spokane, WA
Country the United States
Latitude 47.6
Longitude -117.5


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.