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 13% of the time at 9 am and barely half the time at 8 pm.

Nonstops


Delta	ATL	BWI	1h 51m	79%	2.0%	2,812	Flying now
Southwest	ATL	BWI	1h 50m	79%	1.9%	1,562	Flying now
Frontier	ATL	BWI	1h 57m	62%	2.7%	924	Flying now
Spirit	ATL	BWI	1h 41m	82%	1.9%	107	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	ATL 07:05 → TPA 08:30WN 244	2h 10m Tampa	TPA 10:40 → BWI 13:00WN 1016	5h 55m	100%	88%
Southwest Details →	ATL 07:40 → MCO 09:10WN 212	1h 45m Orlando	MCO 10:55 → BWI 13:10WN 193	5h 30m	94%	80%
Delta Details →	ATL 09:18 → DTW 11:10DL 1298	3h 59m Detroit	DTW 15:09 → BWI 16:45DL 2480	7h 27m	100%	79%
Southwest Details →	ATL 06:00 → AUS 07:20WN 4363	1h 35m Austin	AUS 08:55 → BWI 13:10WN 4252	7h 10m	100%	79%
American Details →	ATL 05:00 → CLT 06:25AA 5507 · flown by PSA	1h 35m Charlotte	CLT 08:00 → BWI 09:26AA 1635	4h 26m	91%	77%
United Details →	ATL 07:30 → DEN 08:51UA 340	55m Denver	DEN 09:46 → BWI 15:17UA 1362	7h 47m	87%	76%
Delta Details →	ATL 07:10 → BOS 09:45DL 987	1h 24m Boston	BOS 11:09 → BWI 12:49DL 5668 · flown by Republic	5h 39m	96%	75%
Delta Details →	ATL 15:38 → MSP 17:16DL 2981	2h 29m Minneapolis	MSP 19:45 → BWI 23:13DL 2918	7h 35m	96%	75%
Tight connection: often missed
Frontier Details →	ATL 06:35 → FLL 08:33F9 2172	55m Fort Lauderdale	FLL 09:28 → BWI 12:10F9 4412	5h 35m	73%	42%
Delta Details →	ATL 16:48 → BOS 19:36DL 518	59m Boston	BOS 20:35 → BWI 22:29DL 5851 · flown by Republic	5h 36m	58%	33%
United Details →	ATL 19:04 → ORD 20:30UA 1046	50m Chicago	ORD 21:20 → BWI 00:28 +1UA 675	5h 24m	45%	26%

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

DEN · 55m · leaves 07:30 13%

DFW · 57m · leaves 08:22 15%

DTW · 50m · leaves 07:25 18%

Afternoon and evening

IAH · 1h 09m · leaves 15:57 22%

BOS · 59m · leaves 16:48 42%

ORD · 50m · leaves 19:04 55%

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.


Delta DL 2634 ATL 07:25 → RDU Southwest WN 1059 RDU 11:18 → BWI Connection details →	2h 25m	5h 03m	99%	89%
Delta DL 987 ATL 07:10 → BOS Southwest WN 733 BOS 13:20 → BWI Connection details →	3h 35m	7h 50m	99%	88%
Delta DL 3125 ATL 07:30 → IND Southwest WN 4388 IND 11:32 → BWI Connection details →	2h 32m	5h 37m	99%	87%

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