Terminal T1 hosts 5 airlines.
All five airlines share the same short walk in T1
In Bismarck’s Passenger Terminal Building, every Allegiant Air, American Airlines, Delta Air Lines, Frontier Airlines, and United Airlines flight uses the same small gate area in T1, so you walk only a few minutes from check-in to security to your gate. The building dates from the mid‑2000s, feels modern enough, and you can usually see the whole departure lounge from almost any seat. One central TSA checkpoint handles all departures, so once you’re through, you’re at your gate in under 2 minutes.
Security lines usually stay short, but don’t gamble on it
Reviewers on Flightradar24 call security “easy,” and with just one checkpoint serving a handful of daily departures, 10–20 minutes is a normal wait outside peak times. Morning banks for Delta and United can bunch up, and weekend Allegiant flights add extra volume, so aim to hit the terminal door at least 75 minutes before boarding for small regional jets and 90 minutes before those fuller leisure flights. There’s no PreCheck-only lane reported, so plan on the standard single queue.
Food and drink: think basic, not destination dining
Frequent fliers rate BIS food as “average” and “limited,” and that tracks with the size of the Passenger Terminal Building: one compact post‑security snack and drink setup, plus vending machines near the gates. Expect typical airport pricing, with soft drinks around a few dollars and simple grab‑and‑go items rather than full entrées. Eat properly in Bismarck before you arrive, then treat the terminal as a backup for coffee or a quick packaged snack.
Shops and services stay minimal in this single terminal
All retail in the Passenger Terminal Building sits within T1, and there’s not much of it: think a small newsstand-style counter with magazines, basic travel toiletries, and bottled drinks rather than full retail stores. You won’t find duty‑free, brand-name boutiques, or big electronics outlets here. Pick up your charging cable, headphones, or reading material in town, because selection at BIS runs thin and prices lean toward typical small-airport markups.
No lounges, so pick your seat and charge early
The Passenger Terminal Building at BIS has no airline lounges, no Priority Pass rooms, and no pay-per-use clubs, even though it hosts mainline carriers like American, Delta, and United. Seating clusters around the shared gate area, and power outlets are scattered along walls and support columns rather than at every chair. Grab an outlet as soon as you see one near your gate, especially during those evening United and Delta departures, when every spare plug gets taken fast.
Wi‑Fi works, but reviews call it only “average”
Terminal Wi‑Fi in T1 is free, but Flightradar24 reviewers consistently rate it below the security and facility scores, calling both food and internet “limited” and “average.” Speeds can drop when multiple flights board and people stream video near the gate area, and there aren’t many quiet corners to escape the crowd. Download playlists and documents before you leave home or the hotel so you’re not relying on the terminal network for anything critical.
One last tip: build the buffer on longer winter connections
Bismarck’s Passenger Terminal Building is compact, and normal walks from check-in to the furthest gate stay under 5 minutes, but winter weather in North Dakota can slow everything else down. With Allegiant, American, Delta, Frontier, and United all sharing the same ramp and deicing needs, plan extra time for checked-bag drop and potential delays when snow and ice hit. For tight same-day connections involving a drive to BIS, aim to arrive at the curb at least 2 hours before departure once temperatures dip below freezing regularly.