BWI to PDX flight delays & on-time performance
Nonstop flights from Baltimore/Washington International Thurgood Marshall Airport to Portland International Airport · 2,358 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at BWI or PDX right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Baltimore (BWI) to Portland (PDX) arrived on time 75% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0% were cancelled, and 8% arrived an hour or more late.
- Alaska Airlines was the most punctual airline here (84% on time); Southwest Airlines was the least (70%).
- Departures scheduled around 4pm did best (84% on time); around 12pm did worst (50%).
- Sunday was the most reliable day to fly (89% on time) and Thursday the least (62%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (37%).
Which airline is most on time from BWI to PDX?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Alaska Airlines | 84% | 0.0% | 13 min | 8.8% | 80 |
| Southwest Airlines | 70% | 0.0% | 20 min | 6.7% | 120 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 11am80%26 flights
- 12pm50%16 flights
- 1pm68%53 flights
- 4pm84%80 flights
- 5pm71%14 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday79%0.0% cancelled
- Tuesday74%0.0% cancelled
- Wednesday66%0.0% cancelled
- Thursday62%0.0% cancelled
- Friday83%0.0% cancelled
- Saturday75%0.0% cancelled
- Sunday89%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)37%
- Late-arriving aircraft25%
- Air traffic control & airport congestion23%
- Extreme weather14%
- Security1%
Why flights are cancelled
Share of cancellations by reason.
No cancellation causes recorded in this period.
BWI to PDX: common questions
- How often are BWI to PDX flights on time?
- 75% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Baltimore to Portland cancelled?
- 0.0% of scheduled flights were cancelled (0 of 200).
- How long are typical delays?
- Across all flights the average arrival delay was 17 min (early arrivals count as zero). Flights that were late arrived 65 min behind schedule on average, and 7.5% of flights were an hour or more late.
- How long is taxi time at BWI?
- Flights on this route spent 16 min taxiing from the gate to takeoff on average.
Related routes
Return trip: PDX to BWI — 84% on time
More flights from Baltimore
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: BWI → PDX, nonstop flights by US airlines that report to the DOT. How we calculate this.