Can a Polish citizen enter Ukraine only with ID? (without passport) I am interested in both cases: as a transit flight with change in Kiev (to stay only within the airport) and if it's possible to spend a few hours in the city, outside the airport?
All EU citizens are allowed to enter Ukraine without visa and Poland is not an exclusion. However, you cannot use ID-card for crossing the border, as stated here (Ukrainian version) by the State Border Guard Service.
I am almost sure that you won't be able to make a transit (or airport transfer) with ID as well.
Documents required for crossing the state border of Ukraine:
- Foreign passport;
Attention! ID-card, which identifies the personality, gives no right to cross the State Border of Ukraine
You cannot enter Ukraine, but you can change planes at Kiev-Boryspil airport.
As stated in Timatic, the database used by Airlines:
Transit refused to nationals of Poland with a national ID card.
Except when transiting through Kiev Boryspil (KBP) on Ukraine International Airlines (PS).
At the entry to transit security control, a border officer will check your boarding pass and ID card