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

Nonstops (seasonal or thin)


United	BDL	DEN	4h 28m	86%	1.0%	727	Flying now
Southwest	BDL	DEN	4h 25m	80%	1.2%	163	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Denver on time. Total trip = scheduled departure to arrival, layover included (Denver is 2 h behind Hartford). Layovers up to 4 hours. Pick a connection for the details.


United Details →	BDL 06:09 → ORD 07:54UA 2672	3h 00m Chicago	ORD 10:54 → DEN 12:45UA 581	8h 36m	99%	94%
United Details →	BDL 06:00 → IAD 07:26UA 635	2h 47m Dulles	IAD 10:13 → DEN 12:05UA 1865	8h 05m	99%	90%
Delta Details →	BDL 08:05 → ATL 10:29DL 2233	2h 21m Atlanta	ATL 12:50 → DEN 14:04DL 957	7h 59m	99%	87%
Delta Details →	BDL 06:00 → ATL 08:29DL 2933	3h 16m Atlanta	ATL 11:45 → DEN 12:59DL 706	8h 59m	99%	84%
Southwest Details →	BDL 05:50 → BWI 07:10WN 420	2h 30m Baltimore	BWI 09:40 → DEN 11:25WN 275	7h 35m	100%	84%
United Details →	BDL 08:47 → ORD 10:40UA 4664 · flown by SkyWest	2h 16m Chicago	ORD 12:56 → DEN 14:46UA 1150	7h 59m	97%	82%
American Details →	BDL 06:20 → PHL 07:40AA 6111 · flown by Piedmont	1h 55m Philadelphia	PHL 09:35 → DEN 11:56AA 3312	7h 36m	100%	82%
Delta Details →	BDL 05:30 → DTW 07:27DL 2964	1h 13m Detroit	DTW 08:40 → DEN 09:53DL 1113	6h 23m	95%	81%
Tight connection: often missed
United Details →	BDL 06:09 → ORD 07:54UA 2672	46m Chicago	ORD 08:40 → DEN 10:31UA 526	6h 22m	72%	64%
United Details →	BDL 10:26 → IAD 11:55UA 3993 · flown by Mesa	53m Dulles	IAD 12:48 → DEN 14:42UA 1587	6h 16m	69%	61%
Southwest Details →	BDL 17:10 → MCO 20:05WN 692	50m Orlando	MCO 20:55 → DEN 22:58WN 2634	7h 47m	33%	17%

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 07m · leaves 09:43 5%

ATL · 1h 16m · leaves 08:05 8%

IAD · 49m · leaves 06:00 13%

Afternoon and evening

IAD · 1h 06m · leaves 15:02 21%

ORD · 1h 16m · leaves 16:55 24%

MCO · 50m · leaves 17:10 67%

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.


JetBlue B6 737 BDL 07:15 → MCO United UA 1520 MCO 12:50 → DEN Connection details →	2h 41m	9h 36m	97%	88%
Delta DL 2933 BDL 06:00 → ATL United UA 1327 ATL 11:10 → DEN Connection details →	2h 41m	8h 28m	99%	88%
American AA 2163 BDL 07:12 → ORD United UA 581 ORD 10:54 → DEN Connection details →	1h 52m	7h 33m	91%	86%

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