"Green Flag parks are delivering more of what people want compared to parks that are not flying the flag," said charity GreenSpace, which polled visitors.
"A survey of 16,000 park visitors confirmed that Green Flag parks are the best in the country. More than 90 per cent of visitors were 'very satisfied' or 'satisfied', compared to 65 per cent of visitors to non-Green Flag parks."
Fewer than three per cent were dissatisfied with an awarded site against 16 per cent who were either dissatisfied or very dissatisfied with their flagless counterparts.
Scheme manager Paul Todd said: "We know Green Flag parks are the best in the country and these survey results confirm that.
The award is the benchmark UK standard for top parks and green spaces and is run by Keep Britain Tidy, the BTCV, GreenSpace and the Department for Communities & Local Government. The organisers aim to award flags to 15,000 sites by 2020.