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 8 am and 1 time in 4 at 5 pm.

Nonstops


American	SDF	DCA	1h 45m	80%	4.2%	1,029	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 →	SDF 06:15 → IAH 07:42UA 6266 · flown by Mesa	2h 05m Houston	IAH 09:47 → DCA 13:57UA 2670	7h 42m	98%	85%
United Details →	SDF 07:15 → ORD 07:56UA 3422 · flown by Republic	2h 04m Chicago	ORD 10:00 → DCA 13:04UA 1381	5h 49m	97%	82%
American Details →	SDF 05:04 → CLT 06:41AA 5255 · flown by PSA	1h 19m Charlotte	CLT 08:00 → DCA 09:29AA 1977	4h 29m	90%	80%
Delta Details →	SDF 06:49 → MSP 08:00DL 4928 · flown by Endeavor	2h 26m Minneapolis	MSP 10:26 → DCA 13:48DL 2983	7h 00m	96%	78%
Delta Details →	SDF 06:00 → ATL 07:25DL 2407	3h 35m Atlanta	ATL 11:00 → DCA 12:42DL 737	6h 42m	99%	77%
American Details →	SDF 06:51 → ORD 07:38AA 4622 · flown by Republic	3h 07m Chicago	ORD 10:45 → DCA 13:59AA 4809 · flown by Republic	7h 08m	98%	77%
American Details →	SDF 06:00 → MIA 08:33AA 1325	1h 25m Miami	MIA 09:58 → DCA 12:37AA 2915	6h 36m	95%	76%
Delta Details →	SDF 06:00 → LGA 08:15DL 5652 · flown by Republic	3h 05m New York	LGA 11:20 → DCA 12:46DL 5749 · flown by Republic	6h 46m	100%	72%
Tight connection: often missed
United Details →	SDF 15:41 → IAH 17:10UA 6310 · flown by Mesa	55m Houston	IAH 18:05 → DCA 22:15UA 1627	6h 34m	75%	49%
American Details →	SDF 15:39 → CLT 17:24AA 5397 · flown by PSA	58m Charlotte	CLT 18:22 → DCA 20:00AA 2386	4h 21m	66%	35%
Delta Details →	SDF 17:55 → MSP 19:09DL 5017 · flown by Endeavor	51m Minneapolis	MSP 20:00 → DCA 23:27DL 2961	5h 31m	50%	34%

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 08:10 7%

ORD · 1h 04m · leaves 07:15 8%

CLT · 1h 19m · leaves 05:04 10%

Afternoon and evening

LGA · 1h 05m · leaves 17:55 38%

MSP · 51m · leaves 17:55 50%

BOS · 46m · leaves 17:10 54%

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 4679 SDF 06:40 → MCO American AA 2088 MCO 10:40 → DCA Connection details →	2h 00m	6h 19m	93%	85%
Delta DL 5652 SDF 06:00 → LGA American AA 4654 LGA 10:47 → DCA Connection details →	2h 32m	6h 17m	99%	78%
American AA 4622 SDF 06:51 → ORD United UA 1381 ORD 10:00 → DCA Connection details →	2h 22m	6h 13m	93%	78%

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