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 one-hour layover misses 6% of the time at 10 am and 32% of the time at 10 pm.

Nonstops (seasonal or thin)


United	FLL	IAD	2h 36m	87%	0.6%	710	Flying now
Frontier	FLL	IAD	2h 40m	54%	5.6%	72	Flying now

Best connections, any airlines

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.


Southwest + Unitedtwo ticketsDetails →	FLL 05:30 → TPA 06:35WN 429	2h 25m Tampa	TPA 09:00 → IAD 11:22UA 2331	5h 52m	94%	88%
JetBlue + Unitedtwo ticketsDetails →	FLL 09:09 → RIC 11:27B6 1246	3h 33m Richmond	RIC 15:00 → IAD 16:05UA 4549 · flown by GoJet	6h 56m	100%	87%
Southwest + Unitedtwo ticketsDetails →	FLL 06:10 → MCO 07:15WN 4824	1h 40m Orlando	MCO 08:55 → IAD 11:14UA 276	5h 04m	93%	87%
United Details →	FLL 07:02 → ORD 09:30UA 752	1h 37m Chicago	ORD 11:07 → IAD 14:12UA 1869	7h 10m	98%	85%
Delta Details →	FLL 06:30 → ATL 08:26DL 1215	3h 51m Atlanta	ATL 12:17 → IAD 14:02DL 2135	7h 32m	99%	84%
Delta + Unitedtwo ticketsDetails →	FLL 05:25 → ATL 07:20DL 1168	2h 05m Atlanta	ATL 09:25 → IAD 11:15UA 632	5h 50m	98%	84%
JetBlue + Unitedtwo ticketsDetails →	FLL 06:30 → BOS 09:42B6 690	2h 53m Boston	BOS 12:35 → IAD 14:43UA 3413 · flown by Republic	8h 13m	98%	80%
Southwest + Unitedtwo ticketsDetails →	FLL 09:35 → BNA 10:50WN 4638	2h 45m Nashville	BNA 13:35 → IAD 16:28UA 2125	6h 53m	98%	79%
Tight connection: often missed
Delta Details →	FLL 19:46 → ATL 21:54DL 1295	59m Atlanta	ATL 22:53 → IAD 00:44 +1DL 2549	4h 58m	68%	50%
United Details →	FLL 17:44 → EWR 20:55UA 279	55m Newark	EWR 21:50 → IAD 23:19UA 1784	5h 35m	66%	48%
Frontier Details →	FLL 17:40 → ATL 20:04F9 1123	1h 12m Atlanta	ATL 21:16 → IAD 23:09F9 3692	5h 29m	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 12m · leaves 07:44 6%

Afternoon and evening

EWR · 55m · leaves 17:44 34%

ATL · 1h 12m · leaves 17:40 45%

CLT · 53m · leaves 19:41 47%

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.

The table above includes two-ticket connections (marked “two tickets”), held to the 90-minute minimum. One ticket only →

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