Title: How low can a fighter jet fly safely? - Quora
Headings: How low can a fighter jet fly safely?
How low can a fighter jet fly safely?
Scot Johnson

Content: These were done at 500 feet/152 meters and as I recall at 360kts/667km/h. ( We had a waiver for flying over 250kts below 10,000) However in training for combat, in between combat line periods in Southeast Asia, we practiced more incredibly low and
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Fighters can fly safely and extremely low with proper training and a large amount of incremental practice. The only question is, as one flies ever lower, when does it become less safe, or even unsafe. I have had a lot of low-level training. In training as a Naval Aviator we flew canned low-level training routes or, ‘sand blowers’ across the western US. These were done at 500 feet/152 meters and as I recall at 360kts/667km/h. ( We had a waiver for flying over 250kts below 10,000) However in training for combat, in between combat line periods in Southeast Asia, we practiced more incredibly low and incredibly fast flights over water. More than anything else, unseen obstacles are the greatest threat to low level flying safety. At 500 feet and being on the planned and authorized canned routes flown by many others, obstacles were not too much of a problem. These planned routes avoided them.