The Netherlands tulip field scene was filmed in a grass field in the UK. It required around two million digital tulips.
Tom Holland says that Happy Hogan is one of his favorite characters and that he loves how Jon Favreau plays him, calling him "one of the godfathers of this entire universe."
(at around 10 mins) Peter's suitcase has the letters "BFP" on it. This refers to Benjamin Franklin Parker, Peter Parker's Uncle Ben, whose death propelled him to use his powers responsibly.
This is the first Marvel Studios movie without a cameo by Stan Lee after his passing on November 12th, 2018.