Route Reliability
Baltimore → Portland
BWI–PDX · 2,358 miles · Baltimore/Washington International Thurgood Marshall Airport to Portland International Airport
75
Usually Fine
WanderNerd Reliability Score
- 81%
- Arrive within 15 minutes
- 5 min
- Average arrival delay
- 1.4%
- Cancelled
- 138
- Flights in the data
Data through May 2026.
Airlines on this route
- Southwest Airlines80% on time · 119 flights
- Alaska Airlines90% on time · 19 flights
Too little history on this route to call a winner. We rank airlines only after 100 flights each.
What the data says
The 3–6 PM departure wins.
BWI–PDX flights departing between 3–6 PM arrived on time 89% of the time, versus 77% between 9 AM–12 PM.
Mondays have been rough.
BWI–PDX flights arrived on time 94% of the time on Tuesdays and just 72% on Mondays. That gap is worth planning around.
Flights on this route
The breakdown
- Mon72%(18 flights)
- Tue94%(18 flights)
- Wed75%(20 flights)
- Thu74%(19 flights)
- Fri74%(19 flights)
- Sat90%(20 flights)
- Sun90%(19 flights)
- 9 AM–12 PM77%(17 flights)
- 12–3 PM78%(72 flights)
- 3–6 PM89%(36 flights)
- 6–9 PM—(8 flights)
90%
May
Jun 80% → May 90% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 80% | 25 |
| July 2025 | 71% | 28 |
| August 2025 | 90% | 30 |
| September 2025 | 80% | 30 |
| May 2026 | 90% | 19 |
Same trip, other airports
Keep nerding
Based on 138 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.