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Is a 45 min layover in Nashville long enough?

BNA · Nashville International · Nashville, United States
Probably Enough

Yes, 45 minutes is probably enough for a layover at BNA (Nashville).

A comfortable domestic connection given BNA's single-terminal walkable layout.
Quick Stats
Concourses
5
Max Transit
15m
Avg. Security
15m
Primary Hub
Southwest Airlines
Minimum Connection Times
Domestic → Domestic
40min
tight
Domestic → International
60min
✗
International → Domestic
75min
✗
International → International
90min
✗
AD PLACEMENT — CONTEXTUAL
Tips for 45 min Connections
Check your gate assignment as soon as you land since the four concourses meet at a central point, making cross-terminal walks quick but not instant.
If arriving internationally, budget extra time for the CBP process at the Concourse D Federal Inspection Station, especially during morning transatlantic arrival banks.
Southwest passengers connecting between Southwest flights benefit from BNA's compact layout and frequent departures if you miss a tight window.
Security lines can spike around early morning and late afternoon banks, so use TSA PreCheck if eligible to save meaningful time.
Restaurants and shops are concentrated near the Rotunda, so a short layover still gives easy access to food without a long detour.
Busyness — Connection Risk
12a6a12p6p12a
Low risk
Moderate
High risk
Tight connections are safer outside peak hours. Morning rush (6–9a), midday (11a–2p), and evening (4–8p) are highest risk.
Getting Between Concourses
All concourses connect through the central Rotunda via covered walkways, with no trains or shuttles needed anywhere in the terminal. International arrivals deplane at Concourse D and pass through Federal Inspection Services (CBP) before re-entering the sterile area to connect onward; connecting passengers arriving internationally do not need to re-clear security if continuing to a domestic flight after CBP.
Frequently Asked Questions
Is 45 minutes enough for a layover at Nashville International (BNA)?

A comfortable domestic connection given BNA's single-terminal walkable layout.

What is the minimum connection time at BNA?

Minimum connection times at Nashville International: Domestic-to-Domestic is 40 minutes, International-to-International is 90 minutes. These are the shortest layovers airlines will sell.

Can I make a 45 minutes connection at BNA on an international flight?

45 minutes is below the 90-minute international MCT at Nashville International. You may need to rush and could miss your connection. All concourses connect through the central Rotunda via covered walkways, with no trains or shuttles needed anywhere in the terminal. International arrivals deplane at Concourse D and pass through Federal Inspection Services (CBP) before re-entering the sterile area to connect onward; connecting passengers arriving internationally do not need to re-clear security if continuing to a domestic flight after CBP.

What happens if I miss my connection at BNA?

If you miss a connection at BNA, head to your airline's service desk near the Rotunda or your arrival gate area; Southwest and Delta both have staffed help desks, and given BNA's frequent domestic schedules, same-day rebooking is usually available within a few hours.

Other Layover Durations at BNA
25 min30 min35 min40 min50 min55 min1 hr1¼ hr1½ hr1¾ hr2 hr2½ hr3 hr4 hr
45 min Layovers at Other Airports
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AD PLACEMENT — BEFORE FOOTER