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, 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 →	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 Details →	FLL 05:25 → ATL 07:20DL 1168	2h 30m Atlanta	ATL 09:50 → IAD 11:39DL 1444	6h 13m	98%	82%
United Details →	FLL 09:00 → IAH 10:45UA 722	1h 28m Houston	IAH 12:13 → IAD 16:30UA 2366	7h 30m	94%	77%
American Details →	FLL 07:44 → CLT 09:53AA 2087	1h 12m Charlotte	CLT 11:05 → IAD 12:38AA 5220 · flown by PSA	4h 54m	94%	76%
United Details →	FLL 11:20 → CLE 14:05UA 2067	57m Cleveland	CLE 15:02 → IAD 16:20UA 780	5h 00m	92%	75%
Delta Details →	FLL 09:57 → ATL 11:45DL 1334	3h 14m Atlanta	ATL 14:59 → IAD 16:47DL 1695	6h 50m	99%	74%
Frontier Details →	FLL 06:50 → DFW 09:11F9 1973	2h 09m Dallas-Fort Worth	DFW 11:20 → IAD 15:33F9 3208	8h 43m	92%	73%
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.


Southwest WN 429 FLL 05:30 → TPA United UA 2331 TPA 09:00 → IAD Connection details →	2h 25m	5h 52m	94%	88%
JetBlue B6 1246 FLL 09:09 → RIC United UA 4549 RIC 15:00 → IAD Connection details →	3h 33m	6h 56m	100%	87%
Southwest WN 4824 FLL 06:10 → MCO United UA 276 MCO 08:55 → IAD Connection details →	1h 40m	5h 04m	93%	87%

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