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 75-minute layover misses 3% of the time at 8 am and 1 time in 4 at 7 pm.

Nonstops


American	CMH	DCA	1h 26m	73%	3.4%	1,701	Flying now
Southwest	CMH	DCA	1h 15m	62%	1.1%	350	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.


American Details →	CMH 06:00 → BOS 08:06AA 4642 · flown by Republic	1h 12m Boston	BOS 09:18 → DCA 10:59AA 1605	4h 59m	97%	86%
United Details →	CMH 07:00 → ORD 07:39UA 3429 · flown by Republic	2h 21m Chicago	ORD 10:00 → DCA 13:04UA 1381	6h 04m	98%	83%
Delta Details →	CMH 06:00 → BOS 08:13DL 5663 · flown by Republic	2h 12m Boston	BOS 10:25 → DCA 12:12DL 5592 · flown by Republic	6h 12m	99%	83%
Delta Details →	CMH 06:30 → DTW 07:39DL 5701 · flown by Republic	2h 26m Detroit	DTW 10:05 → DCA 11:34DL 2476	5h 04m	98%	83%
United Details →	CMH 06:30 → IAH 08:16UA 2205	1h 31m Houston	IAH 09:47 → DCA 13:57UA 2670	7h 27m	95%	82%
Southwest Details →	CMH 07:12 → STL 07:38WN 1207	52m St Louis	STL 08:30 → DCA 11:25WN 3905	4h 13m	97%	81%
Delta Details →	CMH 07:00 → MSP 08:03DL 2403	2h 23m Minneapolis	MSP 10:26 → DCA 13:48DL 2983	6h 49m	98%	81%
United Details →	CMH 05:30 → ORD 06:09UA 3524 · flown by Republic	1h 51m Chicago	ORD 08:00 → DCA 11:01UA 382	5h 31m	98%	80%
Tight connection: often missed
American Details →	CMH 15:44 → CLT 17:31AA 5134 · flown by PSA	51m Charlotte	CLT 18:22 → DCA 20:00AA 2386	4h 16m	66%	35%
Delta Details →	CMH 14:25 → LGA 16:14DL 4649 · flown by Endeavor	1h 06m New York	LGA 17:20 → DCA 18:58DL 5717 · flown by Republic	4h 33m	64%	32%
American Details →	CMH 13:01 → PHL 14:40AA 2905	49m Philadelphia	PHL 15:29 → DCA 16:44AA 5636 · flown by PSA	3h 43m	73%	30%

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

STL · 52m · leaves 07:12 3%

BOS · 1h 12m · leaves 06:00 3%

DFW · 1h 10m · leaves 05:48 4%

Afternoon and evening

EWR · 1h 20m · leaves 17:00 25%

CLT · 51m · leaves 15:44 34%

LGA · 1h 06m · leaves 14:25 36%

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.


American AA 4642 CMH 06:00 → BOS JetBlue B6 1055 BOS 10:20 → DCA Connection details →	2h 14m	6h 00m	97%	82%
Southwest WN 1193 CMH 05:10 → MCO Delta DL 1003 MCO 10:20 → DCA Connection details →	3h 00m	7h 22m	100%	80%
Delta DL 5663 CMH 06:00 → BOS American AA 1556 BOS 10:21 → DCA Connection details →	2h 08m	6h 03m	97%	80%

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