Route reliability record
LBB→DEN
Lubbock to Denver
- Flights
- 983
- Period
- September 2025 to August 2026
- Distance
- 456 mi
- Carriers
- 2
This route lands a B, level with the national rate of 77.3%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That rests on 983 LBB to DEN flights, with a median arrival 7 minutes early.
Best time to fly LBB to DEN: a 5am–8am departure, ideally on a Saturday. Flights in that window arrived on time 93.3% of the time and Saturday flights 83.5%, against 77.1% for the route overall.
The US average over the same twelve months is 77.3%, so there is little to separate this route from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
77.1%
Arrivals under 15 minutes late, of 966 completed flights
Avg delay
95 min
Across delayed arrivals only, not all flights
Cancelled
1.53%
National rate is 1.89%
Best carrier
SkyWest
71.8% on time across 701 flights
These figures cover 983 flights between September 2025 and August 2026. Beyond the headline rate, 9.4% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
Which airline is most reliable on LBB to DEN
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 |
|---|---|---|---|---|---|
| Southwest Airlinesthin sample | 282 | 90.3% | 74 min | 1.42% | A |
| SkyWest Airlines | 701 | 71.8% | 98 min | 1.57% | C |
Flight by flight
Flights on LBB to DEN
The flight numbers below flew this route at least 250 times in the period, busiest first. Each has its own record, with its schedule and delay causes.
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Departure window
The best time of day to leave
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 36 points, against half a point between the best and worst carrier.
- 5am–8am227 flights93.3%
- 8am–11am333 flights84.0%
- 11am–2pm68 flights84.6%
- 2pm–5pm38 flights73.0%
- 5pm–8pm317 flights57.0%
- 8pm–5am—
Scale runs 50% to 100%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 57.0% on time, against 93.3% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 8am–11am window is the busiest, with 333 flights scheduled in it.
Explore
Filter LBB to DEN by airline, time, month and day
Pick a breakdown and a carrier. The dashed mark on each row is the same slice for every US flight.
On LBB to DEN, the best departure window is 5am–8am at 93.3% on time and the worst is 5pm–8pm at 57.0%, a wide gap of 36.3 points. All US flights leaving 5am–8am ran 89.3%.
- 5–8am93.3%
- 8–11am84.0%
- 11am–2pm84.6%
- 2–5pm73.0%
- 5–8pm57.0%
- 8pm–5am—
best all US flightsScale 50% to 100%. Cells under 30 flights show a dash.
Across the year
When delays peak on this route
This route's year swings by 16 points from best month to worst, which is wide. An annual average tells you very little about the week you are actually flying, so read the strip rather than the headline if your dates are fixed.
Delays peak in October, when the on-time rate falls to 69.6%. March is the strongest month at 85.4%. Moving a flexible trip across that boundary buys 16 points. March was the busiest month here, with 107 flights.
Across the week, Saturday is the strongest day at 83.5% on time and Monday the weakest at 73.2%, a spread of 10 points.
Delay causes
Why this route gets delayed
Carrier accounts for 52% of the 21,000 delay minutes carriers reported here, and the remaining four split what is left.
- 52%Carrier
- 24%Late-arriving aircraft
- 21%National Airspace System
- 2%Extreme weather
The largest share of delay minutes, 52%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 11,000 of the 21,000 delay minutes reported here. The split is drawn from 21,068 reported delay minutes.
Cancellations sit at 1.53% against a national 1.89%, which is ordinary. Diversions add another 0.20%.
Connections and stage length
What a delay here actually costs
9.4% 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 456 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 5am–8am window matters as much as it does.
The return leg is a different operation and performs like one: it runs 71.4% on time across 980 flights, 6 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 6 points of difference.
One caution: this is a thin sample. 983 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.
Work out the risk of missing a connection in DEN after this flight
What to do with this
Booking this route
Put together: treat all of this as provisional. 983 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 77.1% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 966 completed flights over 12 months sit behind that.
Common questions
LBB to DEN questions
How often is LBB to DEN delayed?
Roughly one flight in four arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 22.9% of the 983 flights in this analysis, against 22.7% nationally. Delayed flights are late by an hour and a half on average.
How reliable is LBB to DEN compared with the rest of the country?
77.1% of flights arrive on time here against a national 77.3%, a difference of half a point against it. That is worth a B on this site's grading scale.
What time of day has the fewest delays on LBB to DEN?
The 5am–8am departure window is the strongest at 93.3% on time. The 5pm–8pm window is the weakest at 57.0%, 36 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.
How bad are October delays on LBB to DEN?
October is the weakest month at 69.6% on time, compared with 85.4% in March. Across the year that is 16 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.
Related
Where to go next
- DEN to LBB — the return legseparate record
- Denver International (DEN) delay statistics
- Southwest Airlines on LBB to DEN90.3%
- SkyWest Airlines on LBB to DEN71.8%
- LBB to DFW, a related route84.1%
- PHX to DEN, a related route76.7%
- LBB to DAL, a related route84.9%
- Southwest Airlines on-time record90.3%
- SkyWest Airlines on-time record71.8%
- The best time of day to fly, according to 7.05 million flight records
- How often a connection fails at the major US hubs
Direction matters. LBB to DEN and DEN to LBB are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
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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.