Itineraries flown on 20+ days in the Jun 6 – Jul 31, 2026 schedule · each leg’s record Aug 2025 – Jul 2026

Connect in the morning. The same one-hour layover misses 4% of the time at 8 am and 2 times in 5 at 7 pm.

Nonstops


Southwest	BWI	BNA	2h 00m	81%	1.8%	1,757	Flying now
Spirit	BWI	BNA	1h 56m	81%	3.6%	55	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Nashville on time. Total trip = scheduled departure to arrival, layover included (Nashville is 1 h behind Baltimore). Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	BWI 08:10 → RDU 09:30WN 1067	1h 10m Raleigh/Durham	RDU 10:40 → BNA 11:15WN 684	4h 05m	100%	95%
United Details →	BWI 08:16 → ORD 09:30UA 2749	2h 59m Chicago	ORD 12:29 → BNA 14:14UA 3634 · flown by Republic	6h 58m	100%	89%
United Details →	BWI 06:15 → ORD 07:30UA 709	1h 10m Chicago	ORD 08:40 → BNA 10:34UA 5304 · flown by SkyWest	5h 19m	97%	88%
Southwest Details →	BWI 07:05 → PVD 08:25WN 4821	2h 05m Providence	PVD 10:30 → BNA 12:00WN 3400	5h 55m	100%	87%
Delta Details →	BWI 07:00 → ATL 08:56DL 2579	2h 25m Atlanta	ATL 11:21 → BNA 11:33DL 2867	5h 33m	99%	85%
Southwest Details →	BWI 08:25 → SAV 10:20WN 1093	2h 55m Savannah	SAV 13:15 → BNA 13:40WN 2076	6h 15m	100%	85%
Delta Details →	BWI 05:40 → ATL 07:31DL 2950	2h 21m Atlanta	ATL 09:52 → BNA 10:06DL 1155	5h 25m	99%	83%
Southwest Details →	BWI 06:45 → TPA 09:10WN 1119	1h 50m Tampa	TPA 11:00 → BNA 11:55WN 4003	6h 10m	100%	82%
Tight connection: often missed
Southwest Details →	BWI 16:28 → MDW 17:32WN 997	1h 08m Chicago	MDW 18:40 → BNA 20:10WN 1073	4h 42m	67%	31%
United Details →	BWI 17:32 → ORD 18:55UA 590	1h 02m Chicago	ORD 19:57 → BNA 21:45UA 2063	5h 13m	60%	28%
American Details →	BWI 15:46 → DFW 18:12AA 1629	1h 02m Dallas-Fort Worth	DFW 19:14 → BNA 21:11AA 3169	6h 25m	58%	21%

Same layover, different day-part

How often the first flight arrives too late to connect (45 min minimum), for one-ticket layovers of 45–80 minutes.

Morning

MCO · 1h 15m · leaves 09:30 4%

CLT · 1h 12m · leaves 06:15 4%

ORD · 1h 17m · leaves 05:44 5%

Afternoon and evening

IAH · 1h 01m · leaves 15:03 34%

ORD · 1h 02m · leaves 17:32 40%

DFW · 1h 02m · leaves 15:46 42%

Delays build through the day, so an afternoon first leg eats the layover. A short connection is fine early in the morning and a gamble later on.

Mixing airlines

One ticketMiss it and the airline rebooks you; bags go through. 45 min is enough.

Separate ticketsMiss it and you buy a new ticket. Re-check bags, clear security again: we require 90 min.


Southwest WN 4689 BWI 06:20 → ATL Delta DL 2867 ATL 11:21 → BNA Connection details →	3h 06m	6h 13m	100%	88%
Southwest WN 883 BWI 06:38 → BOS JetBlue B6 1807 BOS 10:28 → BNA Connection details →	2h 20m	6h 39m	100%	85%
Southwest WN 1119 BWI 06:45 → TPA American AA 3825 TPA 11:55 → BNA Connection details →	2h 45m	7h 11m	100%	80%

Rank all connections, any airlines →

Regional partners count as the airline that sells them: SkyWest flying Delta Connection is one Delta ticket.

How these are worked out. Makes the connection: share of the last year’s flights where the first flight arrived with at least 45 minutes to spare (90 on separate tickets). Arrives on time: first flight not cancelled × connection made × second flight not cancelled and arriving within 15 minutes. Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.

About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON