The cheapest times to fly from IDA to GEG are

  • January 1st to March 11th (except the week of February 26th)
  • April 16th to April 29th
  • August 13th to November 18th

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 IDA to GEG is early to mid January. Prices can be as high as $669 for Thursday flights during mid March, or as low as $238 for Tuesday flights around early to mid January.


When to Fly to Spokane

Flying from Idaho Falls, ID (IDA) to Spokane, WA (GEG) will usually cost between $248 to $541 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early to mid January with an average ticket price of $261. Due to high demand the most expensive time to fly is mid March, with an average price of $491. Planning your trip to low-cost times can easily save you $230 on economy flights and even more on first-class flights. Generally, any price below $367 can be considered a good price for a round-trip IDA to GEG flight.

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

IDA to GEG Flight Prices

Compared to other flights, the IDA to GEG flight is much cheaper than the average and costs much less than the average flight leaving from Idaho Falls. The average price per mile (for a direct flight) is $0.59, which is above average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Thursdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $121 (29%) 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 $297. Return trip prices are from the GEG to IDA 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 IDA 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 1 hour 41 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from IDA to GEG while comparing.

Destination alternative #1: Lewiston Nez Perce County Airport (LWS) in Lewiston, ID

  • 89 miles (143 km) away from GEG
  • Usually 4.63% less expensive than GEG
  • 1-layover flights available

See IDA to LWS flights


Flight Questions Answered

Still have questions about flying from IDA to GEG? We’ve got answers.

Which airlines fly this route?

You can find 3 major airlines flying this route most often: Alaska, Delta, United, and potentially more during busy seasons.

How far away is it from Spokane International Airport to Idaho Falls Regional Airport?

The distance between the two airports is roughly 387 miles or 623 kilometers.

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

The real-world flight time for a nonstop IDA to GEG flight is about 1 hour 41 minutes.

How many flights go between Idaho Falls, ID and Spokane, WA?

It depends on the day of the week and the date, but a typical day might have around 57 available flights from IDA to GEG.


Airport Location Info


Departing Airport

Origination code IDA
Origination airport name Idaho Falls Regional Airport
City Idaho Falls, ID
Country the United States
Latitude 43.5
Longitude -112.1

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.