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 9 am and 28% of the time at 8 pm.

Nonstops (seasonal or thin)


Alaska	PIT	SEA	5h 22m	74%	1.1%	470	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 Pittsburgh). Layovers up to 4 hours. Pick a connection for the details.


United Details →	PIT 06:06 → IAD 07:18UA 3679 · flown by Republic	1h 42m Dulles	IAD 09:00 → SEA 11:51UA 2101	8h 45m	99%	90%
Delta Details →	PIT 17:40 → SLC 19:49DL 1188	2h 56m Salt Lake City	SLC 22:45 → SEA 23:59DL 2998	9h 19m	100%	89%
United Details →	PIT 08:36 → ORD 09:30UA 3461 · flown by Republic	4h 00m Chicago	ORD 13:30 → SEA 16:09UA 1660	10h 33m	99%	85%
Delta Details →	PIT 05:45 → ATL 07:25DL 1504	3h 45m Atlanta	ATL 11:10 → SEA 13:38DL 648	10h 53m	99%	84%
United Details →	PIT 08:30 → DEN 09:59UA 1765	1h 23m Denver	DEN 11:22 → SEA 13:22UA 1424	7h 52m	97%	82%
United Details →	PIT 10:30 → IAD 11:42UA 6184 · flown by Mesa	1h 28m Dulles	IAD 13:10 → SEA 15:55UA 2241	8h 25m	97%	82%
American Details →	PIT 07:44 → PHX 09:07AA 653	2h 25m Phoenix	PHX 11:32 → SEA 14:49AA 3440 · flown by Envoy	10h 02m	95%	82%
United Details →	PIT 07:25 → EWR 08:58UA 3673 · flown by Republic	2h 07m Newark	EWR 11:05 → SEA 14:16UA 1289	9h 51m	100%	79%
Tight connection: often missed
Delta Details →	PIT 06:30 → DTW 07:44DL 5319 · flown by Endeavor	46m Detroit	DTW 08:30 → SEA 10:31DL 734	7h 01m	69%	49%
Delta Details →	PIT 17:40 → SLC 19:49DL 1188	55m Salt Lake City	SLC 20:44 → SEA 22:05DL 2016	7h 25m	72%	32%
American Details →	PIT 15:59 → ORD 16:50AA 555	57m Chicago	ORD 17:47 → SEA 20:37AA 3105	7h 38m	61%	26%

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

ATL · 1h 03m · leaves 07:00 6%

CLT · 1h 10m · leaves 06:38 8%

ORD · 1h 08m · leaves 06:49 9%

Afternoon and evening

IAH · 50m · leaves 17:02 46%

SFO · 1h 03m · leaves 17:23 50%

DEN · 1h 05m · leaves 18:40 60%

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.


American AA 653 PIT 07:44 → PHX Delta DL 2419 PHX 12:05 → SEA Connection details →	2h 58m	10h 34m	93%	87%
Southwest WN 4350 PIT 07:15 → LAS Delta DL 2922 LAS 10:59 → SEA Connection details →	2h 09m	9h 36m	98%	87%
United UA 3679 PIT 06:06 → IAD Alaska AS 361 IAD 09:30 → SEA Connection details →	2h 12m	9h 10m	99%	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