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 8% of the time at 10 am and 31% of the time at 8 pm.

Nonstops


American	GSP	DCA	1h 41m	67%	4.7%	1,017	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	GSP 06:10 → ORD 07:30UA 4728 · flown by SkyWest	2h 30m Chicago	ORD 10:00 → DCA 13:04UA 1381	6h 54m	97%	83%
United Details →	GSP 07:00 → IAH 08:33UA 4049 · flown by Mesa	1h 14m Houston	IAH 09:47 → DCA 13:57UA 2670	6h 57m	94%	83%
Delta Details →	GSP 07:10 → DTW 09:00DL 876	1h 05m Detroit	DTW 10:05 → DCA 11:34DL 2476	4h 24m	96%	80%
Delta Details →	GSP 05:44 → ATL 06:45DL 3028	2h 35m Atlanta	ATL 09:20 → DCA 11:08DL 380	5h 23m	99%	78%
American Details →	GSP 06:00 → LGA 08:04AA 4751 · flown by Republic	2h 43m New York	LGA 10:47 → DCA 12:17AA 4654 · flown by Republic	6h 17m	97%	77%
Delta Details →	GSP 06:45 → ATL 07:49DL 1146	3h 11m Atlanta	ATL 11:00 → DCA 12:42DL 737	5h 57m	98%	76%
American Details →	GSP 06:15 → MIA 08:11AA 3806 · flown by Envoy	1h 47m Miami	MIA 09:58 → DCA 12:37AA 2915	6h 21m	96%	76%
American Details →	GSP 07:00 → CLT 08:16AA 5654 · flown by PSA	2h 58m Charlotte	CLT 11:14 → DCA 12:59AA 5527 · flown by PSA	5h 58m	96%	74%
Tight connection: often missed
United Details →	GSP 10:45 → ORD 11:59UA 5361 · flown by SkyWest	46m Chicago	ORD 12:45 → DCA 15:52UA 752	5h 07m	60%	39%
American Details →	GSP 16:07 → CLT 17:23AA 6131 · flown by Piedmont	59m Charlotte	CLT 18:22 → DCA 20:00AA 2386	3h 53m	72%	38%
Delta Details →	GSP 18:10 → LGA 20:11DL 5004 · flown by Endeavor	1h 14m New York	LGA 21:25 → DCA 22:55DL 1825	4h 45m	69%	27%

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

DTW · 1h 05m · leaves 07:10 4%

IAH · 1h 14m · leaves 07:00 6%

ATL · 1h 03m · leaves 08:52 8%

Afternoon and evening

CLT · 59m · leaves 16:07 28%

ATL · 51m · leaves 19:48 28%

LGA · 1h 14m · leaves 18:10 31%

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.


Delta DL 3028 GSP 05:44 → ATL American AA 5050 ATL 08:58 → DCA Connection details →	2h 13m	5h 16m	98%	76%
Delta DL 5171 GSP 06:00 → LGA American AA 4654 LGA 10:47 → DCA Connection details →	2h 48m	6h 17m	96%	76%
United UA 5361 GSP 10:45 → ORD American AA 2769 ORD 14:55 → DCA Connection details →	2h 56m	7h 14m	98%	70%

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