Carrier route record
NKSJU→DFW
Spirit Airlines · San Juan to Dallas-Fort Worth
- Flights
- 187
- Period
- September 2025 to August 2026
- Share of route
- 19%
- Carriers
- 3
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Spirit Airlines.
Spirit on SJU to DFW sits in the middle of the pack with a B−. Close to three flights in four arrive on time by the DOT's definition, 2 points worse than the national rate of 77.3%. The late ones land a little over an hour behind schedule. That rests on 187 flights, with a median arrival 11 minutes early.
The US average over the same twelve months is 77.3%, so there is little to separate Spirit on SJU to DFW from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
75.1%
Arrivals under 15 minutes late, of 177 completed flights
Avg delay
71 min
Across delayed arrivals only, not all flights
Cancelled
4.28%
National rate is 1.89%
Whole route
80.3%
Every carrier on SJU to DFW, 975 flights
These figures cover 187 flights between September 2025 and August 2026. Beyond the headline rate, 10.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
Spirit against every carrier on SJU to DFW
Spirit flew 187 of the 975 flights on SJU to DFW, about 19% of it. Its 75.1% on time is 5 points worse than the route as a whole, which runs 80.3%. Ranked by on-time rate it is number two of three carriers on the route, where the range runs from American at 82.7% to Frontier at 71.1%. 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 |
|---|---|---|---|---|---|
| American Airlines | 704 | 82.7% | 80 min | 1.70% | B |
| Spirit Airlines (this page)thin sample | 187 | 75.1% | 71 min | 4.28% | B− |
| Frontier Airlinesthin sample | 84 | 71.1% | 74 min | 9.52% | C− |
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 Spirit 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 187 flights.
There are not enough flights in each departure window to split Spirit's SJU to DFW record by time of day without the percentages moving on noise. The headline rate of 75.1% is the reliable figure here.
Across the year
Spirit on SJU to DFW through the year
- Jul–Sep 202517 flights—
- Oct–Dec 202565 flights84.4%
- Jan–Mar 202684 flights68.4%
- Apr–Jun 202621 flights—
Scale runs 60% to 90%. Rows with fewer than 30 flights show a dash.
Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 75.1% on time across 187 flights.
Split by quarter, Spirit on SJU to DFW logged 17 flights in Jul–Sep 2025, 65 flights in Oct–Dec 2025, 84 flights in Jan–Mar 2026 and 21 flights in Apr–Jun 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 75.1% annual figure is the one to use.
Across the week, Thursday is the strongest day at 90.3% on time and Sunday the weakest at 69.7%, a spread of 21 points.
Arrival by arrival
How late Spirit on SJU to DFW runs when it is late
Spirit on SJU to DFW often beats the schedule: 80 of 177 completed flights, 45%, arrived 15 minutes or more early. The 44 late arrivals split 17 under half an hour, 9 between 30 and 60 minutes, and 18 an hour or more.
- 15+ min early80 flights45.2%
- Within 15 min53 flights29.9%
- 15–29 min late17 flights9.6%
- 30–59 min late9 flights5.1%
- 1–2 hours late10 flights5.6%
- 2+ hours late8 flights4.5%
Scale runs 0% to 100%.
Share of 177 completed flights by arrival against schedule.
16 of 57 late departures made up the time and arrived on time, 28% of them. Only 3 left on time and still arrived late.
The worst days
Worst days for Spirit on SJU to DFW
The latest arrival of the period was on 22 September 2025, 4 hours 26 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 22 September 2025 | 4 hours 26 minutes | Late-arriving aircraft |
| 29 December 2025 | 3 hours 28 minutes | Late-arriving aircraft |
| 14 April 2026 | 3 hours 17 minutes | Late-arriving aircraft |
| 2 January 2026 | 3 hours 11 minutes | Carrier |
| 27 December 2025 | 3 hours 8 minutes | Carrier |
Delay causes
Why Spirit runs late on this route
Late-arriving aircraft accounts for 42% of the 3,115 delay minutes carriers reported here, and the remaining four split what is left.
- 42%Late-arriving aircraft
- 36%Carrier
- 21%National Airspace System
42% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,115 reported delay minutes here, that single category outweighs weather by 42 to one. The split is drawn from 3,115 reported delay minutes.
The largest share of delay minutes, 36%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,135 of the 3,115 delay minutes reported here.
Cancellations run at 4.28%, against 1.89% nationally. That is about one flight in 25 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and stage length
What a delay here costs
10.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
At 2,165 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.
The return leg runs 76.9% on time across 184 flights, within 2 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
One caution: this is a thin sample. 187 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 Spirit on SJU to DFW
Put together: the delay figures matter less here than the 4.28% cancellation rate. A late arrival costs you a little over an hour; a cancelled flight costs you the day. Book the 5pm–8pm departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 177 completed flights over 12 months sit behind that.
Related
Where to go next
- SJU to DFW, every carrier
- Spirit on DFW to SJU, the return leg
- American Airlines on SJU to DFW82.7%
- Spirit Airlines network-wide record
- Luis Munoz Marin International (SJU) delay statistics
- Dallas/Fort Worth International (DFW) delay statistics
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
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.