This code snippet will remove the word From: in the WooCommerce Bookings price display

wc-remove-bookings-from-price.php

function custom_booking_product_price( $price, $product ) {
	$target_product_types = array( 
		'booking' 
	);
	if ( in_array ( $product->product_type, $target_product_types ) ) {
	    $price = str_replace("From:", "", $price);
		return $price;
	}
	// return normal price
	return $price;
}
add_filter('woocommerce_get_price_html', 'custom_booking_product_price', 10, 2);