Route Reliability
Chicago → SUN
ORD–SUN · 1,341 miles · Chicago O'Hare International Airport to SUN Airport
42
Bring Snacks
WanderNerd Reliability Score
- 60%
- Arrive within 15 minutes
- 25 min
- Average arrival delay
- 1.5%
- Cancelled
- 260
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.United Airlines63%150 flights
- 2.American Airlines55%110 flights
What the data says
The late departure is the smart one here.
ORD–SUN flights departing between 6–9 PM arrived on time 68% of the time, versus 53% between 9 AM–12 PM.
Friday is doing you no favors.
ORD–SUN flights arrived on time 78% of the time on Tuesdays and just 47% on Fridays. That gap is worth planning around.
United Airlines runs this route best.
United Airlines arrived on time 63% of the time on this route; American Airlines managed 55%.
Flights on this route
The breakdown
- Mon53%(30 flights)
- Tue78%(36 flights)
- Wed62%(29 flights)
- Thu76%(29 flights)
- Fri47%(47 flights)
- Sat53%(47 flights)
- Sun57%(30 flights)
- 6–9 AM64%(91 flights)
- 9 AM–12 PM53%(116 flights)
- 12–3 PM—(1 flights)
- 6–9 PM68%(40 flights)
55%
Apr
Jul 69% → Apr 55% on time
| Month | On-time percentage | Flights |
|---|---|---|
| July 2025 | 69% | 13 |
| August 2025 | 77% | 13 |
| December 2025 | 28% | 25 |
| January 2026 | 66% | 58 |
| February 2026 | 62% | 55 |
| March 2026 | 61% | 59 |
| April 2026 | 55% | 11 |
Keep nerding
Based on 260 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.