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 2% of the time at 9 am and 43% of the time at 7 pm.

Nonstops (seasonal or thin)


Delta	FLL	SEA	6h 32m	78%	1.4%	364	Flying now
Alaska	FLL	SEA	6h 49m	68%	1.1%	462	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Seattle on time. Total trip = scheduled departure to arrival, layover included (Seattle is 3 h behind Fort Lauderdale). Layovers up to 4 hours. Pick a connection for the details.


United Details →	FLL 08:40 → IAD 11:14UA 2169	1h 56m Dulles	IAD 13:10 → SEA 15:55UA 2241	10h 15m	99%	85%
Delta Details →	FLL 06:30 → ATL 08:26DL 1215	2h 44m Atlanta	ATL 11:10 → SEA 13:38DL 648	10h 08m	98%	85%
United Details →	FLL 07:02 → ORD 09:30UA 752	4h 00m Chicago	ORD 13:30 → SEA 16:09UA 1660	12h 07m	100%	84%
Delta Details →	FLL 07:53 → LAX 10:05DL 800	1h 54m Los Angeles	LAX 11:59 → SEA 14:54DL 1045	10h 01m	96%	84%
United Details →	FLL 08:00 → DEN 10:18UA 1311	3h 42m Denver	DEN 14:00 → SEA 16:00UA 2164	11h 00m	99%	83%
Delta Details →	FLL 05:25 → ATL 07:20DL 1168	2h 32m Atlanta	ATL 09:52 → SEA 12:20DL 774	9h 57m	98%	82%
Delta Details →	FLL 07:40 → ATL 09:39DL 1326	2h 56m Atlanta	ATL 12:35 → SEA 14:55DL 629	10h 15m	98%	79%
Delta Details →	FLL 09:57 → ATL 11:45DL 1334	2h 47m Atlanta	ATL 14:32 → SEA 16:49DL 481	9h 51m	99%	77%
Tight connection: often missed
Delta Details →	FLL 18:40 → ATL 20:49DL 2345	46m Atlanta	ATL 21:35 → SEA 23:59DL 903	8h 19m	56%	43%
JetBlue Details →	FLL 14:37 → BOS 17:56B6 70	1h 28m Boston	BOS 19:24 → SEA 22:49B6 197	11h 12m	73%	39%
Southwest Details →	FLL 18:20 → MDW 20:25WN 1870	1h 35m Chicago	MDW 22:00 → SEA 00:30 +1WN 4144	9h 10m	63%	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

IAH · 1h 15m · leaves 07:00 2%

EWR · 1h 06m · leaves 06:55 4%

DEN · 1h 04m · leaves 08:00 6%

Afternoon and evening

DEN · 52m · leaves 15:30 29%

ORD · 1h 05m · leaves 16:20 43%

ATL · 46m · leaves 18:40 44%

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 1201 FLL 06:25 → LAX Delta DL 1045 LAX 11:59 → SEA Connection details →	3h 20m	11h 29m	98%	86%
JetBlue B6 1401 FLL 12:00 → LAX Alaska AS 1301 LAX 18:09 → SEA Connection details →	3h 54m	11h 56m	99%	85%
Delta DL 800 FLL 07:53 → LAX Alaska AS 585 LAX 13:59 → SEA Connection details →	3h 54m	11h 52m	99%	84%

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