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 RSW → IAD flights land within a few points of 9 in 10 on time whatever the hour.

Nonstops (seasonal or thin)


United	RSW	IAD	2h 28m	90%	1.1%	467	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	RSW 07:00 → ORD 09:23UA 1554	1h 44m Chicago	ORD 11:07 → IAD 14:12UA 1869	7h 12m	100%	88%
Delta Details →	RSW 06:45 → ATL 08:33DL 1361	3h 44m Atlanta	ATL 12:17 → IAD 14:02DL 2135	7h 17m	99%	83%
Delta Details →	RSW 05:37 → ATL 07:23DL 1385	2h 27m Atlanta	ATL 09:50 → IAD 11:39DL 1444	6h 01m	96%	80%
American Details →	RSW 06:22 → CLT 08:20AA 1097	2h 45m Charlotte	CLT 11:05 → IAD 12:38AA 5220 · flown by PSA	6h 16m	99%	80%
Delta Details →	RSW 10:48 → ATL 12:27DL 1089	2h 32m Atlanta	ATL 14:59 → IAD 16:47DL 1695	5h 59m	98%	72%
Delta Details →	RSW 14:58 → MSP 17:34DL 2400	2h 21m Minneapolis	MSP 19:55 → IAD 23:25DL 4129 · flown by SkyWest	8h 27m	89%	67%
United Details →	RSW 15:56 → DEN 18:25UA 1354	48m Denver	DEN 19:13 → IAD 00:45 +1UA 1412	8h 49m	91%	66%
Delta Details →	RSW 15:41 → ATL 17:34DL 1196	1h 41m Atlanta	ATL 19:15 → IAD 21:03DL 1309	5h 23m	91%	66%
Tight connection: often missed
Delta Details →	RSW 17:46 → DTW 20:44DL 2559	54m Detroit	DTW 21:38 → IAD 23:14DL 3988 · flown by SkyWest	5h 28m	61%	39%
American Details →	RSW 11:50 → DFW 13:43AA 2428	51m Dallas-Fort Worth	DFW 14:34 → IAD 18:34AA 1904	6h 45m	63%	37%
American Details →	RSW 19:41 → CLT 21:45AA 2442	1h 00m Charlotte	CLT 22:45 → IAD 00:10 +1AA 1242	4h 29m	74%	28%

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 17m · leaves 06:45 4%

Afternoon and evening

JFK · 1h 10m · leaves 12:24 12%

CLT · 1h 00m · leaves 19:41 26%

DTW · 54m · leaves 17:46 39%

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 4872 RSW 06:15 → MCO United UA 276 MCO 08:55 → IAD Connection details →	1h 40m	4h 59m	98%	92%
American AA 803 RSW 06:15 → ORD United UA 1869 ORD 11:07 → IAD Connection details →	2h 34m	7h 57m	100%	85%
Delta DL 2219 RSW 07:00 → MSP United UA 1951 MSP 12:29 → IAD Connection details →	2h 59m	8h 56m	98%	85%

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