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

Nonstops


United	BDL	IAD	1h 29m	82%	2.4%	1,402	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 →	BDL 06:09 → ORD 07:54UA 2672	3h 13m Chicago	ORD 11:07 → IAD 14:12UA 1869	8h 03m	99%	86%
Delta Details →	BDL 05:30 → DTW 07:27DL 2964	1h 23m Detroit	DTW 08:50 → IAD 10:23DL 2884	4h 55m	97%	85%
Delta Details →	BDL 06:00 → ATL 08:29DL 2933	3h 48m Atlanta	ATL 12:17 → IAD 14:02DL 2135	8h 02m	99%	83%
Delta Details →	BDL 09:43 → DTW 11:35DL 2859	3h 35m Detroit	DTW 15:10 → IAD 16:42DL 1787	6h 59m	100%	80%
American Details →	BDL 06:01 → CLT 08:08AA 3182	2h 57m Charlotte	CLT 11:05 → IAD 12:38AA 5220 · flown by PSA	6h 37m	98%	79%
United Details →	BDL 08:20 → IAH 11:10UA 1361	1h 03m Houston	IAH 12:13 → IAD 16:30UA 2366	8h 10m	89%	73%
United Details →	BDL 08:47 → ORD 10:40UA 4664 · flown by SkyWest	2h 50m Chicago	ORD 13:30 → IAD 16:30UA 2794	7h 43m	97%	72%
Delta Details →	BDL 13:50 → ATL 16:20DL 1082	2h 55m Atlanta	ATL 19:15 → IAD 21:03DL 1309	7h 14m	96%	70%
Tight connection: often missed
United Details →	BDL 06:09 → ORD 07:54UA 2672	46m Chicago	ORD 08:40 → IAD 11:52UA 2277	5h 43m	72%	65%
American Details →	BDL 14:44 → CLT 17:00AA 1448	1h 10m Charlotte	CLT 18:10 → IAD 19:34AA 1450	4h 56m	66%	32%
American Details →	BDL 17:28 → CLT 19:45AA 1443	46m Charlotte	CLT 20:31 → IAD 22:05AA 5549 · flown by PSA	4h 37m	55%	29%

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 · 1h 15m · leaves 07:38 7%

IAH · 1h 03m · leaves 08:20 11%

ORD · 46m · leaves 06:09 28%

Afternoon and evening

ATL · 1h 02m · leaves 19:10 16%

CLT · 46m · leaves 17:28 45%

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 2964 BDL 05:30 → DTW United UA 3500 DTW 10:13 → IAD Connection details →	2h 46m	6h 20m	97%	89%
Delta DL 1330 BDL 07:35 → MSP United UA 1951 MSP 12:29 → IAD Connection details →	2h 59m	8h 21m	97%	83%
American AA 2163 BDL 07:12 → ORD United UA 1869 ORD 11:07 → IAD Connection details →	2h 05m	7h 00m	94%	82%

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