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 16% of the time at 8 am and 44% of the time at 9 pm.

Nonstops


Delta	DTW	STL	1h 42m	78%	1.3%	1,298	Flying now
Southwest	DTW	STL	1h 40m	77%	0.5%	597	Flying now
Spirit	DTW	STL	1h 32m	89%few flights	0.0%	19	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Delta Details →	DTW 08:25 → ATL 10:25DL 1653	3h 44m Atlanta	ATL 14:09 → STL 14:48DL 2700	7h 25m	99%	88%
United Details →	DTW 07:05 → ORD 07:42UA 5553 · flown by SkyWest	2h 58m Chicago	ORD 10:40 → STL 12:11UA 1355	6h 06m	97%	86%
American Details →	DTW 10:33 → ORD 11:04AA 4103 · flown by Envoy	1h 28m Chicago	ORD 12:32 → STL 13:55AA 3815 · flown by Envoy	4h 22m	99%	84%
Southwest Details →	DTW 05:50 → BWI 07:20WN 4534	2h 15m Baltimore	BWI 09:35 → STL 10:50WN 1110	6h 00m	100%	83%
United Details →	DTW 06:00 → EWR 07:45UA 3652 · flown by Republic	2h 08m Newark	EWR 09:53 → STL 11:41UA 3630 · flown by Republic	6h 41m	97%	82%
American Details →	DTW 07:00 → CLT 08:54AA 1439	2h 06m Charlotte	CLT 11:00 → STL 11:59AA 2717	5h 58m	97%	81%
Delta Details →	DTW 05:17 → ATL 07:10DL 2375	1h 54m Atlanta	ATL 09:04 → STL 09:43DL 1400	5h 29m	95%	80%
Delta Details →	DTW 06:17 → ATL 08:12DL 1611	3h 40m Atlanta	ATL 11:52 → STL 12:34DL 566	7h 13m	99%	80%
Tight connection: often missed
Delta Details →	DTW 20:05 → MSP 21:00DL 1303	50m Minneapolis	MSP 21:50 → STL 23:22DL 1609	4h 18m	56%	43%
United Details →	DTW 18:20 → ORD 18:57UA 5264 · flown by SkyWest	58m Chicago	ORD 19:55 → STL 21:26UA 2144	4h 06m	65%	37%
Southwest Details →	DTW 20:25 → MDW 20:35WN 1782	1h 00m Chicago	MDW 21:35 → STL 22:50WN 2905	3h 25m	39%	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

LGA · 1h 13m · leaves 07:00 7%

PHL · 1h 09m · leaves 06:05 11%

MSP · 1h 00m · leaves 07:01 16%

Afternoon and evening

CLT · 46m · leaves 13:41 37%

MSP · 50m · leaves 20:05 44%

MDW · 1h 00m · leaves 20:25 61%

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 2826 DTW 08:45 → MCI Southwest WN 2083 MCI 13:45 → STL Connection details →	3h 57m	7h 05m	99%	86%
Delta DL 4456 DTW 07:30 → ORD United UA 1355 ORD 10:40 → STL Connection details →	2h 41m	5h 41m	94%	84%
Frontier F9 1263 DTW 06:10 → ATL Delta DL 566 ATL 11:52 → STL Connection details →	3h 21m	7h 20m	97%	78%

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