Choose a worthwhile degree which suits your needs
If it is linguistics let it be so but do consider future employability as:
a pilot,
waiting to be a pilot and
not as a pilot
This. Also consider a degree that is in an area that you find relevant to your interests (other than aviation). Also consider that if you are hell bent on becoming a commercial pilot, then degrees such as medicine and law are not the way to go, as some have suggested
.
Linguisitics isn't such a bad choice because if something was to happen to your health, then it would only take an extra year to complete a masters in education and then employed as a language teacher.