The cheapest times to fly from BOI to GCM are

  • January 1st to February 4th
  • April 16th to May 6th
  • July 2nd to October 7th (except the week of July 9th)
  • October 22nd 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 BOI to GCM is early to mid September. Prices can be as high as $1619 for Sunday flights during mid to late November, or as low as $521 for Tuesday flights around early to mid September.


When to Fly to Grand Cayman

Flying from Boise, ID (BOI) to Grand Cayman (GCM) will usually cost between $527 to $1043 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early to mid September with an average ticket price of $526. Due to high demand the most expensive time to fly is mid to late November, with an average price of $1094. Planning your trip to low-cost times can easily save you $568 on economy flights and even more on first-class flights. Generally, any price below $613 can be considered a good price for a round-trip BOI to GCM flight.

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

BOI to GCM Flight Prices

Compared to other flights, the BOI to GCM flight is cheaper than the average and costs less than the average flight leaving from Boise. The average price per mile (for a direct flight) is $0.15, which is far 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 out or take a return trip. Selecting flights on the least expensive days could save you up to $154 (20%) 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 $599. Return trip prices are from the GCM to BOI 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 BOI to GCM can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 5 hour 42 minutes may not be realistic.


Flight Hacking BOI to GCM

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 BOI to GCM — but Champion Traveler does!

Hack #1: Los Angeles, CA (BOI > LAX > GCM)

  • Price for both tickets: $603
  • Average savings: $11 (1.71%)

See BOI to LAX flights


Flight Questions Answered

Still have questions about flying from BOI to GCM? We’ve got answers.

Which airlines fly this route?

You can find 7 major airlines flying this route most often: Air Canada, Alaska, American, Cayman Airways, Delta, Southwest, United, and potentially more during busy seasons.

How far away is it from Owen Roberts International Airport to Boise Air Terminal Airport?

The distance between the two airports is roughly 2620 miles or 4216 kilometers.

How long does it take to fly from BOI to GCM?

The real-world flight time for a nonstop BOI to GCM flight is about 5 hour 42 minutes.

How many flights go between Boise, ID and Grand Cayman?

It depends on the day of the week and the date, but a typical day might have around 81 available flights from BOI to GCM.


Airport Location Info


Departing Airport

Origination code BOI
Origination airport name Boise Air Terminal Airport
City Boise, ID
Country the United States
Latitude 43.6
Longitude -116.2

Return Airport

Destination code GCM
Destination airport name Owen Roberts International Airport
City Grand Cayman
Country the Cayman Islands
Latitude 19.3
Longitude -81.4


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.