Pilot Tony Cummings has visited (landed in) a total of 104 countries but have 136 countries yet to explore.
Afghanistan
Antarctica
Armenia
Aruba
Bahrain
Bangladesh
Bolivia
Botswana
British Indian Ocean Territory
British Virgin Islands
Brunei
Burkina Faso
Burundi
Cambodia
Cameroon
Cayman Islands
Central African Republic
China
Christmas Island
Cocos (Keeling) Islands
Comoros
Congo
Cook Islands
Costa Rica
Cote D'Ivoire
Cuba
Djibouti
Dominican Republic
Ecuador
Equatorial Guinea
Eritrea
Eswatini
Ethiopia
Falkland Islands
Fiji
French Guiana
French Polynesia
Gabon
Guam
Guatemala
Guinea
Guinea-Bissau
Guyana
Haiti
Hong Kong
India
Iraq
Johnston Atoll
Kazakhstan
Kiribati
Kuwait
Liberia
Libya
Libyan Arab Jamahiriya
Marshall Islands
Mauritania
Mauritius
Mayotte
Micronesia
Midway Islands
Montserrat
Morocco
Mozambique
New Caledonia
Nicaragua
Niger
Nigeria
Niue
Norfolk Island
North Korea
North Macedonia
Northern Mariana Islands
Oman
Palau
Palestine
Paraguay
Peru
Philippines
Qatar
Reunion
Rwanda
Saint Helena
Saint Pierre and Miquelon
Samoa
Sao Tome and Principe
Senegal
Seychelles
Sierra Leone
Solomon Islands
Somalia
South Sudan
Sri Lanka
Sudan
Suriname
Syria
Taiwan
Tajikistan
Tanzania
Timor Leste
Timor-Leste
Togo
Tonga
Tunisia
Turkmenistan
Tuvalu
Uganda
Uruguay
Uzbekistan
Vanuatu
Vietnam
Wake Island
Wallis and Futuna
Western Sahara
Yemen
Zambia