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 1 time in 4 at 4 pm.

Nonstops


Delta	STL	ATL	1h 38m	90%	2.0%	2,358	Flying now
Southwest	STL	ATL	1h 35m	81%	1.1%	1,105	Flying now
Frontier	STL	ATL	2h 01m	62%	1.8%	222	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	STL 06:00 → ORD 07:30UA 2805	2h 59m Chicago	ORD 10:29 → ATL 13:44UA 2684	6h 44m	97%	84%
Southwest Details →	STL 05:40 → MDW 06:45WN 1008	2h 10m Chicago	MDW 08:55 → ATL 11:45WN 4154	5h 05m	98%	83%
Delta Details →	STL 06:21 → MSP 07:57DL 1597	2h 43m Minneapolis	MSP 10:40 → ATL 14:05DL 1046	6h 44m	98%	82%
Southwest Details →	STL 05:05 → TPA 08:25WN 3985	55m Tampa	TPA 09:20 → ATL 10:55WN 4987	4h 50m	93%	82%
American Details →	STL 05:10 → CLT 08:03AA 858	1h 07m Charlotte	CLT 09:10 → ATL 10:41AA 5039 · flown by PSA	4h 31m	96%	82%
Delta Details →	STL 06:30 → DTW 09:04DL 1626	1h 21m Detroit	DTW 10:25 → ATL 12:25DL 2856	4h 53m	94%	79%
Delta Details →	STL 08:49 → MSP 10:30DL 5325 · flown by Endeavor	2h 15m Minneapolis	MSP 12:45 → ATL 16:16DL 1048	6h 27m	97%	78%
Delta Details →	STL 11:18 → MSP 12:55DL 3188	3h 14m Minneapolis	MSP 16:09 → ATL 19:46DL 1028	7h 28m	100%	78%
Tight connection: often missed
United Details →	STL 11:25 → ORD 13:03UA 4395 · flown by GoJet	52m Chicago	ORD 13:55 → ATL 17:10UA 356	4h 45m	63%	45%
American Details →	STL 13:27 → ORD 14:59AA 6352 · flown by SkyWest	1h 00m Chicago	ORD 15:59 → ATL 19:02AA 1375	4h 36m	65%	28%
American Details →	STL 13:14 → DFW 15:10AA 5655 · flown by PSA	50m Dallas-Fort Worth	DFW 16:00 → ATL 19:11AA 1379	4h 57m	57%	17%

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

CLT · 1h 07m · leaves 05:10 4%

TPA · 55m · leaves 05:05 7%

IAH · 1h 03m · leaves 08:35 15%

Afternoon and evening

DFW · 50m · leaves 13:14 43%

IAH · 49m · leaves 14:57 44%

MSP · 55m · leaves 15:57 47%

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 4775 STL 08:15 → MKE Delta DL 1151 MKE 12:56 → ATL Connection details →	3h 31m	6h 49m	100%	89%
Southwest WN 3943 STL 08:10 → MCI Delta DL 2908 MCI 12:21 → ATL Connection details →	3h 06m	6h 18m	100%	89%
Southwest WN 3894 STL 06:15 → BWI Delta DL 801 BWI 11:52 → ATL Connection details →	2h 34m	6h 26m	98%	85%

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