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

No clear winner: airlines and hours on this route all land within a few points of 7 in 10 on time.

Nonstops


United	ORD	DAY	1h 23m	70%	3.8%	1,892	Flying now
American	ORD	DAY	1h 21m	67%	4.3%	1,304	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Delta Details →	ORD 06:35 → ATL 09:41DL 1247	3h 54m Atlanta	ATL 13:35 → DAY 15:07DL 2763	7h 31m	99%	85%
American Details →	ORD 05:07 → CLT 08:10AA 2842	3h 37m Charlotte	CLT 11:47 → DAY 13:31AA 5490 · flown by PSA	7h 22m	98%	83%
United Details →	ORD 06:30 → IAD 09:24UA 1689	3h 20m Dulles	IAD 12:44 → DAY 14:18UA 4241 · flown by CommuteAir	6h 48m	100%	82%
United Details →	ORD 11:07 → IAD 14:12UA 1869	3h 03m Dulles	IAD 17:15 → DAY 19:01UA 4274 · flown by CommuteAir	6h 54m	99%	78%
Delta Details →	ORD 15:22 → ATL 18:36DL 1477	3h 44m Atlanta	ATL 22:20 → DAY 23:51DL 3167	7h 32m	98%	77%
American Details →	ORD 05:00 → DFW 07:30AA 760	2h 00m Dallas-Fort Worth	DFW 09:30 → DAY 13:04AA 5163 · flown by PSA	7h 04m	96%	76%
Delta Details →	ORD 09:45 → ATL 12:51DL 1178	3h 26m Atlanta	ATL 16:17 → DAY 17:50DL 3088	7h 05m	99%	75%
American Details →	ORD 12:00 → CLT 15:08AA 2681	3h 50m Charlotte	CLT 18:58 → DAY 20:40AA 5435 · flown by PSA	7h 41m	97%	67%
Tight connection: often missed
American Details →	ORD 13:20 → DCA 16:25AA 1675	1h 13m Washington	DCA 17:38 → DAY 19:22AA 5162 · flown by PSA	5h 02m	74%	39%
American Details →	ORD 13:25 → DFW 15:59AA 1120	1h 17m Dallas-Fort Worth	DFW 17:16 → DAY 20:48AA 5609 · flown by PSA	6h 23m	58%	36%
American Details →	ORD 16:51 → DFW 19:28AA 2988	50m Dallas-Fort Worth	DFW 20:18 → DAY 23:50AA 5245 · flown by PSA	5h 58m	39%	23%

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

IAD · 52m · leaves 08:40 11%

DFW · 54m · leaves 06:04 21%

Afternoon and evening

DCA · 1h 13m · leaves 13:20 26%

DFW · 50m · leaves 16:51 61%

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.


United UA 425 ORD 07:12 → ATL Delta DL 2763 ATL 13:35 → DAY Connection details →	3h 08m	6h 54m	100%	87%
United UA 5216 ORD 06:30 → CLT American AA 5490 CLT 11:47 → DAY Connection details →	2h 03m	5h 59m	92%	76%
United UA 530 ORD 09:07 → ATL Delta DL 3088 ATL 16:17 → DAY Connection details →	3h 55m	7h 43m	98%	75%

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