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 7% of the time at 11 am and 1 time in 4 at 5 pm.

Nonstops (seasonal or thin)


Delta	SLC	DCA	4h 07m	85%	0.8%	364	Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Washington on time. Total trip = scheduled departure to arrival, layover included (Washington is 2 h ahead of Salt Lake City). Layovers up to 4 hours. Pick a connection for the details.


United Details →	SLC 05:15 → DEN 06:54UA 5683 · flown by SkyWest	2h 36m Denver	DEN 09:30 → DCA 14:59UA 789	7h 44m	99%	90%
Delta + Americantwo ticketsDetails →	SLC 23:31 → BOS 06:05DL 696	3h 13m Boston	BOS 09:18 → DCA 10:59 +1AA 1605	9h 28m	100%	89%
Delta + Americantwo ticketsDetails →	SLC 23:00 → MIA 05:42DL 2040	2h 20m Miami	MIA 08:02 → DCA 10:38 +1AA 1299	9h 38m	98%	88%
American Details →	SLC 23:25 → CLT 05:22AA 2611	2h 38m Charlotte	CLT 08:00 → DCA 09:29 +1AA 1977	8h 08m	96%	85%
Delta Details →	SLC 23:59 → JFK 06:23DL 705	2h 12m New York	JFK 08:35 → DCA 10:02 +1DL 5750 · flown by Republic	8h 03m	98%	85%
Delta + Southwesttwo ticketsDetails →	SLC 23:36 → TPA 05:45DL 2077	4h 00m Tampa	TPA 09:45 → DCA 12:05 +1WN 4016	10h 29m	99%	83%
United Details →	SLC 06:05 → SFO 07:19UA 4763 · flown by SkyWest	1h 01m San Francisco	SFO 08:20 → DCA 16:47UA 1678	8h 42m	92%	82%
Delta Details →	SLC 23:35 → ATL 05:15DL 912	2h 10m Atlanta	ATL 07:25 → DCA 09:15 +1DL 926	7h 40m	98%	79%
Tight connection: often missed
United Details →	SLC 13:00 → IAH 17:12UA 497	53m Houston	IAH 18:05 → DCA 22:15UA 1627	7h 15m	74%	48%
American Details →	SLC 14:00 → DFW 17:50AA 2613	1h 03m Dallas-Fort Worth	DFW 18:53 → DCA 22:59AA 2752	7h 00m	56%	33%
United Details →	SLC 12:35 → ORD 17:00UA 1178	1h 00m Chicago	ORD 18:00 → DCA 21:10UA 1369	6h 35m	67%	33%

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

BOS · 1h 20m · leaves 23:31 2%

DFW · 1h 10m · leaves 05:00 5%

IAH · 58m · leaves 06:45 7%

Afternoon and evening

IAH · 53m · leaves 13:00 26%

ORD · 1h 00m · leaves 12:35 33%

DFW · 1h 03m · leaves 14:00 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.

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