Short Answer
Yes, if she travels where she will be around a group of people like in an airport or airplane and not alone like driving through a desert.
Reason for Asking the Question
There is a statement of the Prophet which prohibits a woman traveling alone. So the questioner wants to know if there is an exception to the rule.
What the Prophet Said
“A woman must not travel for (a distance of) three days except with a close-relative (for protection).” [Bukhari #1086]
“It is not permissible for a woman who believes in Allah and the Last Day to travel for one day and night except with a close-relative.” [Bukhari #1088]
What the Scholars Said
The Maliki school has allowed this as well as some scholars in the Hanbali and Shafi’i schools. [See Ibn Muflih, al-Furu‘; Nawawi, al-Majmu‘; Ibn Hajar, Fath al-Bari]
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Shaykh Mustafa Umar