Route Reliability
Chicago → Las Vegas
ORD–LAS · 1,514 miles · Chicago O'Hare International Airport to Harry Reid International Airport
- 75%
- Arrive within 15 minutes
- 10 min
- Average arrival delay
- 1.2%
- Cancelled
- 5,367
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.Spirit Airlines82%320 flights
- 2.United Airlines81%2,330 flights
- 3.Southwest Airlines73%723 flights
- 4.American Airlines68%1,820 flights
- 5.Frontier Airlines59%174 flights
What the data says
Morning flights do better here.
ORD–LAS flights departing between 6–9 AM arrived on time 90% of the time, versus 59% between 9 PM–12 AM.
Sunday scaries are real for this one.
ORD–LAS flights arrived on time 80% of the time on Tuesdays. On Sundays: 69%.
Spirit Airlines has a clear lead on this route.
Spirit Airlines arrived on time 82% of the time on this route; Frontier Airlines managed 59%.
Slipping a little lately.
ORD–LAS flights arrived on time 71% of the time over the last three months in the data, compared with 76% in the three months before that.
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
- Mon70%(807 flights)
- Tue80%(702 flights)
- Wed79%(688 flights)
- Thu75%(777 flights)
- Fri74%(803 flights)
- Sat80%(707 flights)
- Sun69%(800 flights)
- 12–3 AM—(2 flights)
- 6–9 AM90%(1259 flights)
- 9 AM–12 PM80%(1071 flights)
- 12–3 PM79%(827 flights)
- 3–6 PM66%(827 flights)
- 6–9 PM61%(999 flights)
- 9 PM–12 AM59%(299 flights)
Jun 74% → May 74% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 74% | 464 |
| July 2025 | 70% | 462 |
| August 2025 | 79% | 475 |
| September 2025 | 80% | 476 |
| October 2025 | 76% | 484 |
| November 2025 | 81% | 379 |
| December 2025 | 70% | 354 |
| January 2026 | 75% | 354 |
| February 2026 | 84% | 391 |
| March 2026 | 73% | 468 |
| April 2026 | 66% | 498 |
| May 2026 | 74% | 479 |
Same trip, other airports
Keep nerding
Based on 5,367 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.