A traveller may shorten the four-unit prayers (Dhuhr, Asr, Isha) to two units, and may combine Dhuhr with Asr and Maghrib with Isha at the time of either. This is a confirmed concession from the Sunnah of the Prophet ﷺ.
References
Sahih al-Bukhari 1102Quran 4:101
Informational, not a personal fatwa. Consult a qualified scholar for rulings on your situation.