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 15% of the time at 8 am and 27% of the time at 10 pm.

Nonstops


Frontier	DFW	STL	1h 57m	85%	0.0%	95	Flying now
American	DFW	STL	1h 49m	68%	3.2%	2,287	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. Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	DFW 06:55 → ATL 10:09DL 893	4h 00m Atlanta	ATL 14:09 → STL 14:48DL 2700	7h 55m	99%	87%
United Details →	DFW 08:45 → DEN 10:06UA 644	3h 19m Denver	DEN 13:25 → STL 16:33UA 1639	7h 48m	99%	86%
United Details →	DFW 05:10 → IAH 06:22UA 2260	1h 38m Houston	IAH 08:00 → STL 10:07UA 6214 · flown by Mesa	4h 57m	99%	85%
United Details →	DFW 05:45 → DEN 06:53UA 773	2h 42m Denver	DEN 09:35 → STL 12:42UA 652	6h 57m	100%	82%
American Details →	DFW 06:00 → ORD 08:39AA 3075	3h 53m Chicago	ORD 12:32 → STL 13:55AA 3815 · flown by Envoy	7h 55m	96%	81%
American Details →	DFW 05:00 → CLT 08:38AA 575	2h 22m Charlotte	CLT 11:00 → STL 11:59AA 2717	6h 58m	99%	81%
United Details →	DFW 11:59 → IAH 13:17UA 539	2h 14m Houston	IAH 15:31 → STL 17:42UA 6160 · flown by Mesa	5h 43m	95%	78%
Delta Details →	DFW 05:30 → ATL 08:42DL 401	3h 10m Atlanta	ATL 11:52 → STL 12:34DL 566	7h 00m	99%	78%
Tight connection: often missed
United Details →	DFW 07:08 → ORD 09:50UA 1695	50m Chicago	ORD 10:40 → STL 12:11UA 1355	5h 03m	69%	60%
American Details →	DFW 18:38 → ORD 21:22AA 1424	1h 38m Chicago	ORD 23:00 → STL 00:16 +1AA 1004	5h 38m	68%	36%
Delta Details →	DFW 18:12 → SLC 20:00DL 2812	50m Salt Lake City	SLC 20:50 → STL 00:43 +1DL 2666	6h 31m	43%	34%

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

PHX · 1h 05m · leaves 07:08 15%

IAH · 57m · leaves 09:46 22%

ORD · 50m · leaves 07:08 31%

Afternoon and evening

EWR · 49m · leaves 16:52 54%

SLC · 50m · leaves 18:12 57%

MSP · 50m · leaves 18:31 57%

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.


Frontier F9 2147 DFW 05:18 → DEN Southwest WN 1753 DEN 10:05 → STL Connection details →	3h 34m	8h 02m	99%	94%
American AA 891 DFW 07:19 → ATL Delta DL 2700 ATL 14:09 → STL Connection details →	3h 40m	7h 31m	96%	86%
American AA 3661 DFW 10:00 → MCI Southwest WN 2083 MCI 13:45 → STL Connection details →	2h 01m	4h 50m	96%	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