Carrier route record
DLBUR→SLC
Delta Air Lines · Burbank to Salt Lake City
- Flights
- 423
- Period
- September 2025 to August 2026
- Share of route
- 29%
- Carriers
- 3
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Delta Air Lines.
Delta on BUR to SLC earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 15 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 2.2 hours. That rests on 423 flights, with a median arrival 17 minutes early.
Set against the rest of the country, Delta's BUR to SLC record is 15 points better than the US average of 77.3%. That gap is worth roughly 146 fewer late arrivals for every thousand flights.
Key figures
On time
91.9%
Arrivals under 15 minutes late, of 420 completed flights
Avg delay
134 min
Across delayed arrivals only, not all flights
Cancelled
0.71%
National rate is 1.89%
Whole route
90.8%
Every carrier on BUR to SLC, 1,457 flights
These figures cover 423 flights between September 2025 and August 2026. The median arrival is 17 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Carrier by carrier
Delta against every carrier on BUR to SLC
Delta flew 423 of the 1,457 flights on BUR to SLC, about 29% of it. Its 91.9% on time is about level with the route as a whole at 90.8%. Ranked by on-time rate it is first of three carriers on the route, where the range runs from Delta at 91.9% to Southwest at 76.8%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Delta Air Lines (this page) | 423 | 91.9% | 134 min | 0.71% | A+ |
| SkyWest Airlines | 939 | 91.7% | 75 min | 0.53% | A+ |
| Southwest Airlinesthin sample | 95 | 76.8% | 61 min | 0.00% | B+ |
Flight by flight
Delta flight numbers on BUR to SLC
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Departure window
When Delta runs best on this route
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 423 flights.
- 5am–8am331 flights93.6%
- 8am–11am28 flights—
- 11am–2pm60 flights86.7%
- 2pm–5pm4 flights—
- 5pm–8pm—
- 8pm–5am—
Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.
The weak window here is the middle of the day, not the evening: 11am–2pm runs 86.7% on time against 93.6% for 5am–8am. That shape usually means a departure bank rather than an accumulating delay, so the recovery later in the afternoon is real rather than noise. The 5am–8am window is the busiest, with 331 flights scheduled in it.
Across the year
Delta on BUR to SLC through the year
Delays peak in November, when the on-time rate falls to 86.7%. June is the strongest month at 100.0%. Moving a flexible trip across that boundary buys 13 points. August was the busiest month here, with 59 flights.
Across the week, Tuesday is the strongest day at 96.4% on time and Sunday the weakest at 88.7%, a spread of 8 points.
Arrival by arrival
How late Delta on BUR to SLC runs when it is late
Delta on BUR to SLC often beats the schedule: 232 of 420 completed flights, 55%, arrived 15 minutes or more early. The 34 late arrivals split 10 under half an hour, 8 between 30 and 60 minutes, and 16 an hour or more.
- 15+ min early232 flights55.2%
- Within 15 min154 flights36.7%
- 15–29 min late10 flights2.4%
- 30–59 min late8 flights1.9%
- 1–2 hours late8 flights1.9%
- 2+ hours late8 flights1.9%
Scale runs 0% to 100%.
Share of 420 completed flights by arrival against schedule.
8 of 38 late departures made up the time and arrived on time, 21% of them. Only 4 left on time and still arrived late.
The worst days
Worst days for Delta on BUR to SLC
The latest arrival of the period was on 2 April 2026, 18 hours 7 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 2 April 2026 | 18 hours 7 minutes | Carrier |
| 29 December 2025 | 9 hours 58 minutes | Carrier |
| 18 September 2025 | 8 hours 44 minutes | Extreme weather |
| 9 November 2025 | 7 hours 25 minutes | Extreme weather |
| 29 January 2026 | 3 hours 18 minutes | Carrier |
Delay causes
Why Delta runs late on this route
Carrier accounts for 59% of the 4,549 delay minutes carriers reported here, and the remaining four split what is left.
- 59%Carrier
- 24%Extreme weather
- 13%Late-arriving aircraft
- 5%National Airspace System
Extreme weather accounts for 24% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 4.0 times the usual weather exposure. The split is drawn from 4,549 reported delay minutes.
The largest share of delay minutes, 59%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,665 of the 4,549 delay minutes reported here.
Cancellations are rare at 0.71%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and stage length
What a delay here costs
Badly late arrivals are rare here: only 3.8% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
The 574 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The return leg is a different operation and performs like one: it runs 82.4% on time across 423 flights, 10 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 10 points of difference.
One caution: this is a thin sample. 423 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking Delta on BUR to SLC
Put together: treat all of this as provisional. 423 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 91.9% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 420 completed flights over 12 months sit behind that.
Related
Where to go next
- BUR to SLC, every carrier
- Delta on SLC to BUR, the return leg
- SkyWest Airlines on BUR to SLC91.7%
- Delta Air Lines network-wide record
- Hollywood Burbank (BUR) delay statistics
- Salt Lake City International (SLC) delay statistics
- Worst months to fly in the US, ranked by the data
- Late aircraft, weather, or the airline: what actually causes US flight delays
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.