Route Reliability
Las Vegas → Seattle
LAS–SEA · 867 miles · Harry Reid International Airport to Seattle–Tacoma International Airport
- 83%
- Arrive within 15 minutes
- 2 min
- Average arrival delay
- 1.0%
- Cancelled
- 5,700
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.Delta Air Lines88%1,735 flights
- 2.Alaska Airlines83%2,668 flights
- 3.Frontier Airlines80%237 flights
- 4.Southwest Airlines73%977 flights
Not enough history to rank: Spirit Airlines (83 flights). We rank airlines only after 100 flights on the route.
What the data says
Morning flights do better here.
LAS–SEA flights departing between 6–9 AM arrived on time 88% of the time, versus 70% between 9 PM–12 AM.
Friday is doing you no favors.
LAS–SEA flights arrived on time 87% of the time on Wednesdays. On Fridays: 77%.
Delta Air Lines has a clear lead on this route.
Delta Air Lines arrived on time 88% of the time on this route; Southwest Airlines managed 73%.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon82%(871 flights)
- Tue86%(753 flights)
- Wed87%(735 flights)
- Thu81%(849 flights)
- Fri77%(841 flights)
- Sat86%(714 flights)
- Sun80%(875 flights)
- 3–6 AM—(6 flights)
- 6–9 AM88%(1297 flights)
- 9 AM–12 PM88%(1239 flights)
- 12–3 PM81%(1073 flights)
- 3–6 PM79%(994 flights)
- 6–9 PM77%(672 flights)
- 9 PM–12 AM70%(357 flights)
Jun 76% → May 81% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 76% | 522 |
| July 2025 | 81% | 515 |
| August 2025 | 77% | 489 |
| September 2025 | 83% | 438 |
| October 2025 | 79% | 473 |
| November 2025 | 85% | 437 |
| December 2025 | 78% | 465 |
| January 2026 | 88% | 457 |
| February 2026 | 94% | 411 |
| March 2026 | 88% | 466 |
| April 2026 | 85% | 473 |
| May 2026 | 81% | 492 |
Same trip, other airports
Keep nerding
Based on 5,700 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.