The cheapest times to fly from BOI to GRK are
- January 8th to February 25th (except the week of February 12th)
- April 2nd to April 29th
- August 6th 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 GRK is late August to early September. Prices can be as high as $902 for Sunday flights during mid March, or as low as $284 for Tuesday flights around late August to early September.
When to Fly to Killeen
Flying from Boise, ID (BOI) to Killeen, TX (GRK) will usually cost between $306 to $717 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late August to early September with an average ticket price of $334. Due to high demand the most expensive time to fly is mid March, with an average price of $713. Planning your trip to low-cost times can easily save you $379 on economy flights and even more on first-class flights. Generally, any price below $436 can be considered a good price for a round-trip BOI to GRK flight.
See below for a graph of average weekly prices for the BOI to GRK route. All prices are for round-trip tickets in USD.
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Compared to other flights, the BOI to GRK flight is much cheaper than the average and costs less than the average flight leaving from Boise. The average price per mile (for a direct flight) is $0.2, 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 out or take a return trip. Selecting flights on the least expensive days could save you up to $175 (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 $383. Return trip prices are from the GRK to BOI flight, and often highlight the quality of our data in showing the same trend.
Departing Prices by Day
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Return Trip Prices by Day
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Nonstop Flights and Layovers
Travelers looking to fly from BOI to GRK 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 22 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 BOI to GRK while comparing.
- 61 miles (98 km) away from GRK
- Usually 27.75% less expensive than GRK
- 1-layover flights available
- 113 miles (182 km) away from GRK
- Usually 27.29% less expensive than GRK
- 1-layover flights available
- 135 miles (217 km) away from GRK
- Usually 25.69% less expensive than GRK
- Nonstop flights available
- 136 miles (219 km) away from GRK
- Usually 16.28% less expensive than GRK
- 1-layover flights available
Flight Questions Answered
Still have questions about flying from BOI to GRK? We’ve got answers.
Which airlines fly this route?
You can find 3 major airlines flying this route most often: Alaska, American, United, and potentially more during busy seasons.
How far away is it from Robert Gray AAF Airport to Boise Air Terminal Airport?
The distance between the two airports is roughly 1324 miles or 2131 kilometers.
How long does it take to fly from BOI to GRK?
The real-world flight time for a nonstop BOI to GRK flight is about 3 hour 22 minutes.
How many flights go between Boise, ID and Killeen, TX?
It depends on the day of the week and the date, but a typical day might have around 21 available flights from BOI to GRK.
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 | GRK |
Destination airport name | Robert Gray AAF Airport |
City | Killeen, TX |
Country | the United States |
Latitude | 31.1 |
Longitude | -97.8 |
Other Resources
Flights to GRK
Flights from GRK
Popular Flights
Flights to BOI
Flights from BOI
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.