I (US citizen) was in the Schengen area (Sweden) for 2.5 months a few months ago (so I am close to 90/180). As a US citizen, I entered under the visa-free agreement (EC 539/2001 Annex II).
I am looking at plane tickets for another trip into the Schengen area, again via the visa-free agreement.
Will border control (in Sweden) allow me entry into their country if my flight back home is on day 89 or 90 of the allowed 90-day period?
I have not found any information online about any leeway requirement, here or via Google.
Due to the Schengen rule requiring passport not expire for 3 additional months after visa expiry or the US's six-month-past-visa-expiry requirement, this seems like a a reasonable question to ask more seasoned travelers than I.
Note: I will not exceed 90-days out of 180-days limit at any time.
(Leaving a few days earlier/entering a bit later so there is a bit of space just in case something goes wrong is be preferable, of course, but I'd like to maximize my stay.)