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 6% of the time at 9 am and barely half the time at 8 pm.

Nonstops


Delta	ATL	MKE	2h 01m	84%	2.0%	2,202	Flying now
Frontier	ATL	MKE	2h 04m	54%	0.0%	62	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	ATL 07:00 → BWI 08:50WN 4364	1h 55m Baltimore	BWI 10:45 → MKE 11:50WN 1011	5h 50m	97%	83%
United Details →	ATL 11:29 → ORD 12:52UA 1239	2h 44m Chicago	ORD 15:36 → MKE 16:42UA 5345 · flown by SkyWest	6h 13m	100%	82%
United Details →	ATL 11:10 → DEN 12:28UA 1327	1h 02m Denver	DEN 13:30 → MKE 17:04UA 4802 · flown by SkyWest	6h 54m	91%	81%
Delta Details →	ATL 14:31 → MSP 16:09DL 2825	2h 05m Minneapolis	MSP 18:14 → MKE 19:37DL 4464 · flown by SkyWest	6h 06m	98%	81%
Delta Details →	ATL 09:55 → MSP 11:30DL 2090	2h 24m Minneapolis	MSP 13:54 → MKE 15:08DL 2006	6h 13m	98%	80%
Delta Details →	ATL 07:30 → LGA 09:42DL 323	1h 23m New York	LGA 11:05 → MKE 12:36DL 5723 · flown by Republic	6h 10m	96%	80%
Delta Details →	ATL 12:21 → MSP 13:57DL 2901	3h 01m Minneapolis	MSP 16:58 → MKE 18:19DL 4462 · flown by SkyWest	6h 58m	100%	80%
United Details →	ATL 07:30 → DEN 08:51UA 340	1h 06m Denver	DEN 09:57 → MKE 13:25UA 1836	6h 55m	93%	79%
Tight connection: often missed
Delta Details →	ATL 17:10 → DTW 19:11DL 2067	49m Detroit	DTW 20:00 → MKE 20:22DL 3724 · flown by SkyWest	4h 12m	60%	38%
United Details →	ATL 15:30 → ORD 16:57UA 516	48m Chicago	ORD 17:45 → MKE 18:48UA 5555 · flown by SkyWest	4h 18m	62%	31%
United Details →	ATL 19:04 → ORD 20:30UA 1046	50m Chicago	ORD 21:20 → MKE 22:29UA 5362 · flown by SkyWest	4h 25m	45%	29%

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

MSP · 1h 05m · leaves 07:25 6%

DEN · 1h 06m · leaves 07:30 7%

DTW · 1h 15m · leaves 09:18 8%

Afternoon and evening

MSP · 58m · leaves 15:38 29%

DTW · 49m · leaves 17:10 40%

ORD · 50m · leaves 19:04 55%

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 2235 ATL 07:25 → DEN Southwest WN 1626 DEN 10:15 → MKE Connection details →	1h 40m	7h 15m	91%	88%
Frontier F9 2510 ATL 05:30 → BWI Southwest WN 1011 BWI 10:45 → MKE Connection details →	3h 19m	7h 20m	94%	82%
American AA 4595 ATL 06:05 → LGA Delta DL 5723 LGA 11:05 → MKE Connection details →	2h 35m	7h 35m	97%	81%

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