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 1 time in 10 at 12 pm and 2 times in 5 at 5 pm.

Nonstops (seasonal or thin)


United	DEN	ATW	2h 31m	71%	0.8%	364	Flying now
Allegiant	DEN	ATW	2h 21m	64%	0.0%	47	Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

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


Southwest + Allegianttwo ticketsDetails →	DEN 05:45 → LAS 06:40WN 3106	3h 02m Las Vegas	LAS 09:42 → ATW 15:11G4 3185	8h 26m	100%	90%
American Details →	DEN 05:00 → DFW 08:05AA 2612	1h 30m Dallas-Fort Worth	DFW 09:35 → ATW 12:09AA 3977 · flown by Envoy	6h 09m	95%	81%
United Details →	DEN 08:00 → ORD 11:44UA 2430	2h 11m Chicago	ORD 13:55 → ATW 15:09UA 4479 · flown by GoJet	6h 09m	98%	77%
Delta Details →	DEN 13:15 → ATL 18:18DL 824	2h 57m Atlanta	ATL 21:15 → ATW 22:30DL 2945	8h 15m	100%	77%
United Details →	DEN 15:01 → ORD 18:46UA 1023	3h 14m Chicago	ORD 22:00 → ATW 23:23UA 4495 · flown by GoJet	7h 22m	95%	77%
Delta Details →	DEN 06:05 → DTW 10:57DL 1745	2h 01m Detroit	DTW 12:58 → ATW 13:25DL 4696 · flown by Endeavor	6h 20m	98%	76%
Southwest + Deltatwo ticketsDetails →	DEN 07:50 → MSP 10:55WN 3420	3h 25m Minneapolis	MSP 14:20 → ATW 15:36DL 3861 · flown by SkyWest	6h 46m	100%	75%
United + Deltatwo ticketsDetails →	DEN 09:35 → DTW 14:27UA 1915	2h 57m Detroit	DTW 17:24 → ATW 17:50DL 4166 · flown by SkyWest	7h 17m	100%	73%
Tight connection: often missed
American Details →	DEN 17:57 → ORD 22:00AA 1734	1h 00m Chicago	ORD 23:00 → ATW 00:10 +1AA 3790 · flown by Envoy	5h 13m	54%	34%
United Details →	DEN 13:25 → ORD 17:05UA 617	55m Chicago	ORD 18:00 → ATW 19:22UA 4772 · flown by SkyWest	4h 57m	60%	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

ORD · 1h 01m · leaves 08:00 11%

Afternoon and evening

DTW · 1h 16m · leaves 14:59 14%

ATL · 53m · leaves 15:15 18%

ORD · 1h 00m · leaves 17:57 46%

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.

The table above includes two-ticket connections (marked “two tickets”), held to the 90-minute minimum. One ticket only →

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