The cheapest times to fly from GRK to VIE are

  • January 1st to April 1st
  • April 16th to May 13th
  • October 15th to December 16th

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 GRK to VIE is early to mid January. Prices can be as high as $1886 for Saturday flights during mid December, or as low as $800 for Tuesday flights around early to mid January.


When to Fly to Vienna

Flying from Killeen, TX (GRK) to Vienna (VIE) will usually cost between $807 to $1451 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 $845. Due to high demand the most expensive time to fly is mid December, with an average price of $1523. Planning your trip to low-cost times can easily save you $678 on economy flights and even more on first-class flights. Generally, any price below $1094 can be considered a good price for a round-trip GRK to VIE flight.

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

GRK to VIE Flight Prices

Compared to other flights, the GRK to VIE flight is priced close to the average and costs slightly more than the average flight leaving from Killeen. The average price per mile (for a direct flight) is $0.12, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to fly to VIE, and Monday the cheapest day to fly back into GRK. Saturdays 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 $134 (11%) 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 $995. Return trip prices are from the VIE to GRK 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 GRK to VIE can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 11 hour 7 minutes may not be realistic.


Flight Hacking GRK to VIE

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 GRK to VIE — but Champion Traveler does!

Hack #1: Houston, TX (GRK > IAH > VIE)

  • Price for both tickets: $874
  • Average savings: $220 (20.07%)

See GRK to IAH flights

Hack #2: Boston, MA (GRK > BOS > VIE)

  • Price for both tickets: $892
  • Average savings: $202 (18.43%)

See GRK to BOS flights

Hack #3: New York, NY (GRK > JFK > VIE)

  • Price for both tickets: $968
  • Average savings: $126 (11.48%)

See GRK to JFK flights


Flight Questions Answered

Still have questions about flying from GRK to VIE? We’ve got answers.

Which airlines fly this route?

You can find 9 major airlines flying this route most often: Air Canada, American, Austrian, British Airways, Delta, Iberia, KLM, Lufthansa, United, and potentially more during busy seasons.

How far away is it from Vienna International Airport to Robert Gray AAF Airport?

The distance between the two airports is roughly 5630 miles or 9061 kilometers.

How long does it take to fly from GRK to VIE?

The real-world flight time for a nonstop GRK to VIE flight is about 11 hour 7 minutes.

How many flights go between Killeen, TX and Vienna?

It depends on the day of the week and the date, but a typical day might have around 12 available flights from GRK to VIE.


Airport Location Info


Departing Airport

Origination code GRK
Origination airport name Robert Gray AAF Airport
City Killeen, TX
Country the United States
Latitude 31.1
Longitude -97.8

Return Airport

Destination code VIE
Destination airport name Vienna International Airport
City Vienna
Country Austria
Latitude 48.1
Longitude 16.6


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.