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 8% of the time at 10 am and almost half the time at 8 pm.

Nonstops (seasonal or thin)


Delta	GSP	DTW	1h 51m	84%	2.1%	884	Flying now

Best connections, any airlines

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.


Southwest + Deltatwo ticketsDetails →	GSP 08:25 → BWI 09:50WN 1899	2h 42m Baltimore	BWI 12:32 → DTW 14:08DL 1546	5h 43m	98%	86%
Southwest + Deltatwo ticketsDetails →	GSP 07:00 → BNA 07:10WN 4705	2h 56m Nashville	BNA 10:06 → DTW 12:46DL 2682	5h 49m	100%	86%
United Details →	GSP 07:00 → IAH 08:33UA 4049 · flown by Mesa	1h 12m Houston	IAH 09:45 → DTW 13:42UA 4064 · flown by Mesa	6h 42m	94%	85%
American + Deltatwo ticketsDetails →	GSP 07:56 → PHL 09:47AA 5130 · flown by PSA	2h 49m Philadelphia	PHL 12:36 → DTW 14:20DL 2331	6h 26m	95%	84%
United + Americantwo ticketsDetails →	GSP 06:10 → ORD 07:30UA 4728 · flown by SkyWest	2h 30m Chicago	ORD 10:00 → DTW 12:32AA 3498 · flown by Envoy	6h 24m	97%	84%
American + Deltatwo ticketsDetails →	GSP 07:20 → ORD 08:46AA 3385 · flown by Envoy	2h 44m Chicago	ORD 11:30 → DTW 13:59DL 3673 · flown by SkyWest	6h 39m	100%	83%
Delta Details →	GSP 05:44 → ATL 06:45DL 3028	2h 33m Atlanta	ATL 09:18 → DTW 11:10DL 1298	5h 28m	99%	83%
Delta Details →	GSP 08:52 → ATL 09:57DL 1619	3h 50m Atlanta	ATL 13:47 → DTW 15:43DL 1031	6h 50m	100%	82%
Tight connection: often missed
United Details →	GSP 14:55 → IAD 16:30UA 4959 · flown by CommuteAir	52m Dulles	IAD 17:22 → DTW 19:02UA 6246 · flown by Mesa	4h 07m	72%	53%
Delta Details →	GSP 18:10 → LGA 20:11DL 5004 · flown by Endeavor	49m New York	LGA 21:00 → DTW 23:10DL 1014	5h 00m	54%	32%
United Details →	GSP 17:43 → ORD 19:00UA 5524 · flown by SkyWest	47m Chicago	ORD 19:47 → DTW 22:19UA 2426	4h 36m	41%	24%

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

IAH · 1h 12m · leaves 07:00 6%

ATL · 1h 03m · leaves 08:52 8%

CLT · 59m · leaves 09:00 10%

Afternoon and evening

ATL · 49m · leaves 19:48 29%

LGA · 49m · leaves 18:10 46%

ORD · 47m · leaves 17:43 59%

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.

The table above includes two-ticket connections (marked “two tickets”), held to the 90-minute minimum. One ticket only →

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