Pilot 1undo has visited (landed in) a total of 64 countries but have 175 countries yet to explore.

Afghanistan

Albania

Algeria

American Samoa

Angola

Anguilla

Antarctica

Antigua and Barbuda

Armenia

Aruba

Azerbaijan

Bahamas, The

Bahrain

Barbados

Belarus

Bosnia and Herzegovina

Botswana

British Virgin Islands

Bulgaria

Burkina Faso

Burundi

Cameroon

Cape Verde

Cayman Islands

Central African Republic

Chad

Chile

Christmas Island

Cocos (Keeling) Islands

Colombia

Comoros

Congo

Congo (DRC)

Cook Islands

Costa Rica

Cote D'Ivoire

Cyprus

Czech Republic

Djibouti

Dominica

Dominican Republic

Ecuador

Egypt

El Salvador

Equatorial Guinea

Eritrea

Estonia

Eswatini

Ethiopia

Falkland Islands

Faroe Islands

Fiji

French Guiana

Gabon

Gibraltar

Greece

Greenland

Grenada

Guadeloupe

Guam

Guatemala

Guernsey

Guinea-Bissau

Guyana

Haiti

Honduras

Hungary

Iran

Iraq

Isle Of Man

Israel

Jamaica

Jersey

Johnston Atoll

Kosovo

Kyrgyzstan

Macau

Malawi

Mali

Malta

Marshall Islands

Martinique

Mauritania

Mayotte

Micronesia

Midway Islands

Moldova

Monaco

Mongolia

Montenegro

Montserrat

Morocco

Morocco

Mozambique

Myanmar

Namibia

Nauru

Netherlands Antilles

New Caledonia

Nicaragua

Niger

Nigeria

Niue

Norfolk Island

North Korea

North Macedonia

Northern Mariana Islands

Oman

Pakistan

Palau

Palestine

Panama

Papua New Guinea

Paraguay

Peru

Poland

Puerto Rico

Reunion

Romania

Rwanda

Saint Helena

Saint Kitts and Nevis

Saint Lucia

Saint Pierre and Miquelon

Saint Vincent and The Grenadines

Samoa

Sao Tome and Principe

Senegal

Serbia

Seychelles

Sierra Leone

Solomon Islands

Somalia

South Sudan

Sudan

Suriname

Syria

Tajikistan

Tanzania

Timor Leste

Timor-Leste

Togo

Tonga

Trinidad and Tobago

Tunisia

Turks and Caicos Islands

Tuvalu

Uganda

Ukraine

Uruguay

Uzbekistan

Vanuatu

Venezuela

Virgin Islands, U.S.

Wake Island

Wallis and Futuna

Western Sahara