Itineraries flown on 20+ days in the Jun 6 – Jul 31, 2026 schedule · each leg’s record Aug 2025 – Jul 2026

No clear winner: United’s IAD → DAY flights land within a few points of 83% on time whatever the hour.

Nonstops (seasonal or thin)


United	IAD	DAY	1h 37m	83%	1.4%	950	Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Dayton on time. Total trip = scheduled departure to arrival, layover included. Layovers up to 4 hours. Pick a connection for the details.


United + Americantwo ticketsDetails →	IAD 06:10 → ORD 07:27UA 2070	2h 08m Chicago	ORD 09:35 → DAY 11:59AA 3786 · flown by Envoy	5h 49m	95%	95%
United + Deltatwo ticketsDetails →	IAD 08:15 → ATL 10:14UA 2739	3h 21m Atlanta	ATL 13:35 → DAY 15:07DL 2763	6h 51m	97%	85%
American Details →	IAD 06:33 → CLT 08:00AA 1216	3h 47m Charlotte	CLT 11:47 → DAY 13:31AA 5490 · flown by PSA	6h 56m	99%	83%
Delta Details →	IAD 06:00 → ATL 07:46DL 2127	1h 20m Atlanta	ATL 09:06 → DAY 10:38DL 3108	4h 38m	94%	80%
United Details →	IAD 10:31 → ORD 11:53UA 1252	3h 07m Chicago	ORD 15:00 → DAY 17:30UA 5810 · flown by SkyWest	6h 59m	100%	80%
United + Americantwo ticketsDetails →	IAD 08:15 → ORD 09:36UA 1775	3h 34m Chicago	ORD 13:10 → DAY 15:35AA 5008 · flown by SkyWest	7h 20m	100%	76%
Delta Details →	IAD 17:51 → ATL 19:54DL 1695	2h 26m Atlanta	ATL 22:20 → DAY 23:51DL 3167	6h 03m	94%	74%
Delta Details →	IAD 12:37 → ATL 14:34DL 1444	1h 43m Atlanta	ATL 16:17 → DAY 17:50DL 3088	5h 13m	94%	70%
Tight connection: often missed
American Details →	IAD 13:08 → CLT 14:42AA 5220 · flown by PSA	48m Charlotte	CLT 15:30 → DAY 17:12AA 5198 · flown by PSA	4h 04m	69%	32%
United Details →	IAD 15:39 → ORD 17:02UA 1393	49m Chicago	ORD 17:51 → DAY 20:22UA 4484 · flown by GoJet	4h 43m	46%	25%

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

ATL · 1h 20m · leaves 06:00 6%

DFW · 55m · leaves 06:14 18%

CLT · 50m · leaves 09:20 20%

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