(This is the “return" question for my question on the right time for shaharis when encountering sunrise twice in a day)
In the summer, when flying from the East Coast to Tel Aviv on an afternoon flight, there are routes (flying North over Greenland) when the sun never sets. One leaves early afternoon from New York, flies over Greenland by the time evening comes and the sun stays up until morning over Europe.
In such a case does one need to pray arvit? Last time I was on such a flight we took a Southern route (middle of the Atlantic on to Spain) and the night did set so there was no issue. But I was prepared to skip arvit and felt bad in anticipation.
I could not find anyone addressing the question directly. Do we have sources on the topic or did anyone ask a rav?