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 SYR → IAD flights land within a few points of 82% on time whatever the hour.

Nonstops


United	SYR	IAD	1h 28m	82%	2.6%	1,327	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 →	SYR 06:15 → ORD 07:29UA 1008	1h 11m Chicago	ORD 08:40 → IAD 11:52UA 2277	5h 37m	95%	82%
Delta Details →	SYR 06:00 → ATL 08:27DL 1108	3h 50m Atlanta	ATL 12:17 → IAD 14:02DL 2135	8h 02m	98%	81%
Delta Details →	SYR 05:30 → JFK 06:52DL 5363 · flown by Endeavor	3h 24m New York	JFK 10:16 → IAD 11:48DL 5835 · flown by Republic	6h 18m	98%	79%
Delta Details →	SYR 06:11 → DTW 07:47DL 2091	1h 03m Detroit	DTW 08:50 → IAD 10:23DL 2884	4h 14m	89%	78%
Delta Details →	SYR 18:54 → ATL 21:28DL 2690	1h 25m Atlanta	ATL 22:53 → IAD 00:44 +1DL 2549	5h 50m	92%	66%
Delta Details →	SYR 12:22 → ATL 14:43DL 1375	2h 09m Atlanta	ATL 16:52 → IAD 18:42DL 2902	6h 20m	97%	64%
United Details →	SYR 11:56 → ORD 13:15UA 4600 · flown by GoJet	2h 38m Chicago	ORD 15:53 → IAD 19:02UA 2437	7h 06m	95%	64%
Delta Details →	SYR 17:17 → DTW 18:59DL 3565 · flown by SkyWest	2h 39m Detroit	DTW 21:38 → IAD 23:14DL 3988 · flown by SkyWest	5h 57m	95%	62%
Tight connection: often missed
American Details →	SYR 19:34 → CLT 21:44AA 2759	1h 01m Charlotte	CLT 22:45 → IAD 00:10 +1AA 1242	4h 36m	66%	26%

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 03m · leaves 06:11 11%

CLT · 54m · leaves 08:00 23%

Afternoon and evening

CLT · 1h 01m · leaves 19:34 34%

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 2091 SYR 06:11 → DTW United UA 3500 DTW 10:13 → IAD Connection details →	2h 26m	5h 39m	96%	88%
Delta DL 2834 SYR 07:32 → MSP United UA 1951 MSP 12:29 → IAD Connection details →	3h 18m	8h 24m	96%	85%
American AA 4134 SYR 06:00 → ORD United UA 1869 ORD 11:07 → IAD Connection details →	3h 43m	8h 12m	96%	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