It depends on the size of the Citation Jet, can range anywhere from 100 to more than 300 gallons per hour. The site below have the fuel consumption for a number of different Citations.
The fuel tank capacity of a Cessna Citation jet varies by model. For example, the Cessna Citation 550 has a fuel capacity of approximately 6,000 pounds, while the Citation X has a capacity of around 6,900 pounds. Generally, Cessna Citation jets are designed for efficient long-range travel, with fuel capacities that support various flight distances depending on the specific model.
Airliner jet engines such as a Boeing 737 burns about 3,500 pounds of fuel per hour at cruising altitude and speed. Thats a little over 500 gallons per hour per engine.
Roughly 100 gallons per hour. An example is linked below.
none unless it is flying
25 gallons per hour.
5000 lbs per hour
2500 pounds per hour, which is about 368 gallons per hour. by: a 13 year old.
it depends on the flight level. can be up to 300lbs/hour per engine
For the first hour the fuel burn is approx 6000 pounds @ 4 USD /Gallon (check actual price for jet fuel) = $3,529.41 USD/Hr (first hour) for fuel burn only!
8,000 gal/hr at mach 3
the ammount of fuel a fighter jet uses depends on they type of aircraft EG. how many engines, how big they are ect. for example the SR-71A blackbird uses around 3.6 kilalitres of fuel an hour
You pay around 2000$ per hour for the smallest private jet(Cessna Citation). A Gulfstream IV costs around 4500$ an hour. So you might want to pay for the jet only while you're actually using it. It would depend on the size of the jet that you needed to rent. You could expect to pay anywhere from $2500-10,000 per hour!