The cheapest times to fly from HLN to GRK are
- January 8th to February 25th (except the week of February 5th)
- April 23rd to May 13th
- July 30th 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 HLN to GRK is mid August. Prices can be as high as $4115 for Sunday flights during mid December, or as low as $899 for Tuesday flights around mid August.
When to Fly to Killeen
Flying from Helena, MT (HLN) to Killeen, TX (GRK) will usually cost between $899 to $1151 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid August with an average ticket price of $899. Due to high demand the most expensive time to fly is mid December, with an average price of $1491. Planning your trip to low-cost times can easily save you $592 on economy flights and even more on first-class flights. Generally, any price below $951 can be considered a good price for a round-trip HLN to GRK flight.
See below for a graph of average weekly prices for the HLN to GRK route. All prices are for round-trip tickets in USD.
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Compared to other flights, the HLN to GRK flight is priced close to the average and costs slightly more than the average flight leaving from Helena. The average price per mile (for a direct flight) is $0.45, which is a bit above average.
Flight Prices by Day of the Week
Tuesday is usually the cheapest day to fly to GRK, and Thursday the cheapest day to fly back into HLN. Sundays are the most expensive days to fly to Killeen, and Tuesdays are the most expensive days to return to Helena. Selecting flights on the least expensive days could save you up to $94 (8%) 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 $966. Return trip prices are from the GRK to HLN 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 HLN to GRK can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 3 hour 21 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 HLN to GRK while comparing.
- 61 miles (98 km) away from GRK
- Usually 58.65% less expensive than GRK
- 1-layover flights available
- 113 miles (182 km) away from GRK
- Usually 56.02% less expensive than GRK
- 1-layover flights available
- 135 miles (217 km) away from GRK
- Usually 52.45% less expensive than GRK
- 1-layover flights available
- 136 miles (219 km) away from GRK
- Usually 42.87% less expensive than GRK
- 1-layover flights available
Flight Hacking HLN to GRK
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 HLN to GRK — but Champion Traveler does!
- Price for both tickets: $611
- Average savings: $340 (35.72%)
- Price for both tickets: $622
- Average savings: $329 (34.56%)
- Price for both tickets: $628
- Average savings: $323 (33.93%)
Flight Questions Answered
Still have questions about flying from HLN to GRK? We’ve got answers.
Which airlines fly this route?
You can find 5 major airlines flying this route most often: Alaska, American, Delta, United, Virgin Atlantic, and potentially more during busy seasons.
How far away is it from Robert Gray AAF Airport to Helena Regional Airport?
The distance between the two airports is roughly 1312 miles or 2111 kilometers.
How long does it take to fly from HLN to GRK?
The real-world flight time for a nonstop HLN to GRK flight is about 3 hour 21 minutes.
How many flights go between Helena, MT and Killeen, TX?
It depends on the day of the week and the date, but a typical day might have around 17 available flights from HLN to GRK.
Airport Location Info
Departing Airport
Origination code | HLN |
Origination airport name | Helena Regional Airport |
City | Helena, MT |
Country | the United States |
Latitude | 46.6 |
Longitude | -112 |
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 HLN
Flights from HLN
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.