The phrase "amount of flying" is correct and usable in written English.
It can be used when discussing the quantity or extent of flying, such as in aviation, travel, or personal experiences.
Example: "The amount of flying I did last year was significantly higher than in previous years due to work commitments."
Alternatives: "quantity of flying" or "extent of flying".
She is known to be unhappy about the amount of flying she now has to do.
"But if the number is only half, the amount of flying time is probably even more than usual".
The Extraordinary Girl's main scene involved a significant amount of flying, as once was the case with Arachne.
Just the amount of flying I had to do -- first there was none, then, after the Grammy nominations were announced, it seemed like I was on an airplane every day.
The photographs taken by the side cameras overlap those taken by the vertical one and also include the horizon; the effect is to widen the strip of ground covered and thus to reduce the amount of flying required.
Directed by Julie Taymor, a Tony Award winner for "The Lion King," and with music by U2's Bono and the Edge, "Spider-Man" seems likely to become the most technically complex show ever mounted on Broadway, given the amount of flying, special effects, moving scenery, and sound and lighting design inside the Foxwoods Theater, one of Broadway's largest houses.
And while they're not generally beloved by the American public, bats perform two highly valuable services: they eat enormous amounts of flying insects, and they help pollinate crops like peaches and avocados.
One of my responsibilities was flying to all of the shuttle launches to handle communications, so I spent a huge amount of time flying between Houston and Cape Canaveral.
They eat a colossal amount of flies, aphids, wasps and other spiders, creatures that we deem pests as well.
In secondary combustion, the remaining unburned gases and particulates are oxidized, eliminating odours and reducing the amount of fly ash in the exhaust.
Erosion reduced the depth of occurrence and the amount of fly ash present on cultivated sideslopes.
