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 1 time in 10 at 8 am and 29% of the time at 4 pm.

Nonstops


Delta	BUF	DTW	1h 17m	82%	1.4%	1,532	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Delta Details →	BUF 06:00 → ATL 08:10DL 2664	2h 50m Atlanta	ATL 11:00 → DTW 12:55DL 1240	6h 56m	99%	81%
Delta Details →	BUF 06:05 → LGA 07:30DL 4670 · flown by Endeavor	1h 55m New York	LGA 09:25 → DTW 11:25DL 1078	5h 19m	95%	80%
American Details →	BUF 06:00 → ORD 07:03AA 1195	2h 57m Chicago	ORD 10:00 → DTW 12:32AA 3498 · flown by Envoy	6h 34m	96%	79%
American Details →	BUF 05:20 → PHL 06:46AA 5873 · flown by Piedmont	3h 44m Philadelphia	PHL 10:30 → DTW 12:28AA 5530 · flown by PSA	7h 08m	98%	79%
American Details →	BUF 06:01 → CLT 08:01AA 1204	3h 14m Charlotte	CLT 11:15 → DTW 13:01AA 1781	7h 00m	98%	78%
American Details →	BUF 10:07 → ORD 11:09AA 4413 · flown by Republic	3h 50m Chicago	ORD 14:59 → DTW 17:34AA 3980 · flown by Envoy	7h 27m	99%	78%
United Details →	BUF 06:15 → IAD 07:34UA 3668 · flown by Republic	1h 01m Dulles	IAD 08:35 → DTW 10:14UA 6137 · flown by Mesa	3h 59m	90%	76%
United Details →	BUF 10:57 → ORD 11:57UA 705	3h 03m Chicago	ORD 15:00 → DTW 17:39UA 5867 · flown by SkyWest	6h 42m	97%	76%
Tight connection: often missed
American Details →	BUF 19:40 → PHL 21:10AA 6114 · flown by Piedmont	54m Philadelphia	PHL 22:04 → DTW 23:59AA 5169 · flown by PSA	4h 19m	67%	42%
American Details →	BUF 17:25 → DCA 18:59AA 5106 · flown by PSA	2h 00m Washington	DCA 20:59 → DTW 22:44AA 5597 · flown by PSA	5h 18m	69%	27%
American Details →	BUF 16:48 → ORD 18:03AA 4913 · flown by SkyWest	53m Chicago	ORD 18:56 → DTW 21:34AA 4931 · flown by SkyWest	4h 45m	52%	25%

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

LGA · 1h 11m · leaves 10:20 7%

ATL · 1h 08m · leaves 06:00 10%

IAD · 1h 05m · leaves 10:34 12%

Afternoon and evening

PHL · 54m · leaves 19:40 33%

LGA · 1h 04m · leaves 18:11 40%

ORD · 53m · leaves 16:48 48%

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.


American AA 5873 BUF 05:20 → PHL Delta DL 2968 PHL 09:46 → DTW Connection details →	3h 00m	6h 11m	98%	85%
Southwest WN 756 BUF 06:05 → BWI Delta DL 2341 BWI 09:39 → DTW Connection details →	2h 19m	5h 02m	98%	84%
Southwest WN 757 BUF 09:00 → BWI Delta DL 1546 BWI 12:32 → DTW Connection details →	2h 17m	5h 08m	97%	84%

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