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 IAD → BDL flights land within a few points of 86% on time whatever the hour.

Nonstops


United	IAD	BDL	1h 29m	86%	2.1%	1,402	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Delta Details →	IAD 11:10 → DTW 12:44DL 2884	1h 43m Detroit	DTW 14:27 → BDL 16:13DL 2814	5h 03m	100%	84%
Delta Details →	IAD 06:00 → DTW 07:40DL 3826 · flown by SkyWest	2h 51m Detroit	DTW 10:31 → BDL 12:15DL 2163	6h 15m	96%	84%
American Details →	IAD 05:03 → CLT 06:35AA 5054 · flown by PSA	55m Charlotte	CLT 07:30 → BDL 09:28AA 1449	4h 25m	91%	82%
Delta Details →	IAD 06:00 → ATL 07:46DL 2127	2h 39m Atlanta	ATL 10:25 → BDL 12:45DL 1082	6h 44m	97%	81%
United Details →	IAD 06:10 → ORD 07:27UA 2070	3h 36m Chicago	ORD 11:03 → BDL 14:24UA 2195	8h 14m	100%	79%
Delta Details →	IAD 08:27 → ATL 10:17DL 3080	3h 37m Atlanta	ATL 13:54 → BDL 16:14DL 2739	7h 47m	98%	77%
United Details →	IAD 10:31 → ORD 11:53UA 1252	3h 07m Chicago	ORD 15:00 → BDL 18:37UA 4791 · flown by SkyWest	8h 06m	100%	75%
Delta Details →	IAD 17:29 → DTW 19:07DL 1787	2h 43m Detroit	DTW 21:50 → BDL 23:35DL 2989	6h 06m	95%	70%
Tight connection: often missed
United Details →	IAD 15:39 → ORD 17:02UA 1393	1h 08m Chicago	ORD 18:10 → BDL 21:33UA 516	5h 54m	70%	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

CLT · 54m · leaves 09:20 18%

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.


United UA 4015 IAD 08:35 → PHL American AA 6035 PHL 12:51 → BDL Connection details →	3h 06m	5h 36m	100%	80%
United UA 1775 IAD 08:15 → ORD American AA 3409 ORD 13:29 → BDL Connection details →	3h 53m	8h 38m	100%	79%
United UA 2739 IAD 08:15 → ATL Delta DL 2739 ATL 13:54 → BDL Connection details →	3h 40m	7h 59m	98%	77%

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