Denton lies at the top of the "Golden Triangle", whose other vertices are Dallas and Forth Worth. In more mundane terms, Denton lies where I35E (from Dallas) and I35W (from Fort Worth) come up from the south to rejoin into I35, which continues on to the north to OK City and points beyond. The university itself is just off (east) of I35E, about one mile south of the 35E/W split, at either the Avenue D (exit 466B) or McCormick St. (exit 466A) exits. I prefer the Avenue D exit.
I35E and I35W rejoin south of D/FW into I35, to continue south to Austin and beyond. From south of D/FW, you will probably want to take I35W, to avoid Dallas traffic, although there is (or was, in December) more construction on I35W, in both directions. The best advice is to just avoid rush hours. From the east you will probably want to take I635 up to I35E, although, again, this road is often crowded most of the work day. On the other hand, the I30/I35E interchange is known as the MixMaster among the locals, which should tell you something about going *that* way. From the west, you will want to take I820 up to I35W. But then, if you're driving from the west, you either already know that or are driving a *really* long way....
Usually the traffic in and around Denton doesn't get too bad, although sometimes strange things happen....
By the way, as you drive into town, the really big buildings you see are *not* UNT; they belong to Texas Women's University (TWU).
The two main choices of airport are Dallas/Ft. Worth (DFW) and Dallas Love Field (DAL). Denton has a municipal airport, but nobody flies there. DFW is an American Airlines hub, with flights from there to practically everywhere (but, significantly (for the author of this page), not Lincoln, NE). Every other major airline has flights to DFW from their hub(s). Southwest Airlines operates out of DAL (there are also American flights to/from Austin); but the Wright Amendment makes it illegal for SWA to fly from DAL to any state other than Texas or its adjacent states (AR,LA,NM,OK). What this basically means (since nearly all of their destinations are west) is that you have to fly through El Paso or Albuquerque, and you can't check your luggage through. (Technically, they can't book the flights, either; you usually have to reserve half of them, hang up, and call back to reserve the other half. That's politics for you; the intent of the Wright Amendment was to *force* DAL to close. It failed.)
Both airports are about 45 minutes to an hour away from Denton. DFW is about 10 miles south along SR121 from I35E (exit 450). DAL is about 3 miles east along Mockingbird Lane (well, not quite; you turn (left) onto Cedar Springs from Mockingbird) from I35E (exit 433B). A corollary is that DAL is much closer to downtown Dallas (exit 428), something to take into account near rush hour.
Airport shuttles, taxis, car rentals:
I lifted the following information out of a web page for a previous conference at UNT (about 2 years ago); the prices may therefore be slightly dated. Note that the airport shuttle operates by reservation only; they do not operate on a fixed schedule.
Denton is approximately 30 miles north of Dallas-Fort Worth (DFW) International Airport and about 40 miles north of Dallas Love Field Airport (served by Southwest Airlines).
Airport shuttle service between DFW Airport and Denton costs $20 (?) per person one way. If two or more people make reservations and are picked up together, one way fare for each additional passenger is $10 (?). The shuttle service requests reservations at least a day in advance. Call 1-940-565-9936.
Denton taxicabs provide 24 hour service. Rates are approximately $40-$45 one way. 1-940-898-8294 or 1-940-383-4155. (Both numbers are for the same company.)
Airport shuttle service between Love Field and Denton costs $20 (?) per person one way. If two or more people make reservations and are picked up together, one way fare for each additional passenger is $10 (?). The shuttle service requests reservations at least a day in advance. Call 1-940-565-9936.
Denton taxicabs provide 24 hour service. Rates are approximately $45-$50 one way. Call 1-940-898-8294 or 1-940-383-4155. (Both numbers are for the same company.)