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 80-minute layover misses 7% of the time at 9 am and 1 time in 4 at 7 pm.

Nonstops (seasonal or thin)


Alaska	MKE	SEA	4h 28m	82%	0.4%	509	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Seattle on time. Total trip = scheduled departure to arrival, layover included (Seattle is 2 h behind Milwaukee). Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	MKE 06:20 → MSP 07:43DL 4460 · flown by SkyWest	3h 27m Minneapolis	MSP 11:10 → SEA 12:58DL 889	8h 38m	98%	85%
American Details →	MKE 07:26 → PHX 09:05AA 2132	2h 27m Phoenix	PHX 11:32 → SEA 14:49AA 3440 · flown by Envoy	9h 20m	99%	85%
Delta Details →	MKE 06:35 → SLC 09:13DL 2716	2h 22m Salt Lake City	SLC 11:35 → SEA 12:52DL 2995	8h 17m	95%	84%
United Details →	MKE 08:16 → DEN 10:05UA 5558 · flown by SkyWest	3h 55m Denver	DEN 14:00 → SEA 16:00UA 2164	9h 44m	100%	84%
Southwest Details →	MKE 05:15 → DEN 06:50WN 2942	55m Denver	DEN 07:45 → SEA 09:45WN 1713	6h 30m	98%	83%
Delta Details →	MKE 05:40 → ATL 08:42DL 1221	2h 28m Atlanta	ATL 11:10 → SEA 13:38DL 648	9h 58m	96%	82%
Southwest Details →	MKE 05:25 → PHX 07:05WN 2954	3h 40m Phoenix	PHX 10:45 → SEA 13:50WN 814	10h 25m	100%	81%
United Details →	MKE 08:50 → ORD 10:00UA 5402 · flown by SkyWest	3h 30m Chicago	ORD 13:30 → SEA 16:09UA 1660	9h 19m	96%	80%
Tight connection: often missed
American Details →	MKE 07:21 → DFW 10:00AA 2621	47m Dallas-Fort Worth	DFW 10:47 → SEA 13:08AA 717	7h 44m	71%	50%
American Details →	MKE 13:30 → CLT 16:37AA 2134	1h 03m Charlotte	CLT 17:40 → SEA 20:25AA 751	8h 55m	69%	44%
American Details →	MKE 18:40 → DFW 21:17AA 2136	1h 24m Dallas-Fort Worth	DFW 22:41 → SEA 00:57 +1AA 1487	8h 17m	52%	22%

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

DEN · 55m · leaves 05:15 2%

ORD · 1h 15m · leaves 06:20 5%

ATL · 1h 10m · leaves 05:40 7%

Afternoon and evening

DTW · 1h 09m · leaves 13:22 31%

CLT · 1h 03m · leaves 13:30 31%

DEN · 50m · leaves 18:35 54%

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 4866 MKE 06:00 → AUS Delta DL 1684 AUS 11:19 → SEA Connection details →	2h 39m	9h 54m	100%	94%
American AA 2132 MKE 07:26 → PHX Delta DL 2419 PHX 12:05 → SEA Connection details →	3h 00m	9h 52m	99%	92%
Southwest WN 2954 MKE 05:25 → PHX Delta DL 2374 PHX 09:20 → SEA Connection details →	2h 15m	9h 10m	100%	90%

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