Can fresh fruit be transported internationally on an airplane?

You should always exercise extreme caution when taking fresh fruit on an international flight. It is not common that you will be stopped because a lot of the time, people who carry fresh fruit and vegetables do so for consumption on their flight, but majority of countries these days are enforcing strict quarantine laws to stop infection of local crops from pests and infection from foreign foods. If you're taking it on the plane to consume before your first stop, you should be ok, but you will more than likely be stopped and told to dispose of the fruit before you go through any customs and Immigration check in the foreign country which you stop in FIRST, even if you are traveling onward.