Route Reliability
Miami → Portland
MIA–PDX · 2,700 miles · Miami International Airport to Portland International Airport
72
Usually Fine
WanderNerd Reliability Score
- 75%
- Arrive within 15 minutes
- 13 min
- Average arrival delay
- 1.5%
- Cancelled
- 343
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.Alaska Airlines82%141 flights
- 2.American Airlines69%202 flights
What the data says
The 3–6 PM departure wins.
MIA–PDX flights departing between 3–6 PM arrived on time 82% of the time, versus 68% between 6–9 PM.
Sunday scaries are real for this one.
MIA–PDX flights arrived on time 85% of the time on Thursdays and just 65% on Sundays. That gap is worth planning around.
Alaska Airlines runs this route best.
Alaska Airlines arrived on time 82% of the time on this route; American Airlines managed 69%.
Flights on this route
The breakdown
- Mon74%(50 flights)
- Tue84%(49 flights)
- Wed75%(40 flights)
- Thu85%(46 flights)
- Fri74%(49 flights)
- Sat68%(50 flights)
- Sun65%(51 flights)
- 6–9 AM—(1 flights)
- 3–6 PM82%(136 flights)
- 6–9 PM68%(178 flights)
- 9 PM–12 AM80%(20 flights)
75%
May
Nov 70% → May 75% on time
| Month | On-time percentage | Flights |
|---|---|---|
| November 2025 | 70% | 37 |
| December 2025 | 75% | 60 |
| January 2026 | 78% | 55 |
| February 2026 | 69% | 52 |
| March 2026 | 67% | 58 |
| April 2026 | 88% | 51 |
| May 2026 | 75% | 20 |
Same trip, other airports
Keep nerding
Based on 343 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.