PDX to BWI flight delays & on-time performance
Nonstop flights from Portland International Airport to Baltimore/Washington International Thurgood Marshall Airport · 2,358 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at PDX or BWI right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Portland (PDX) to Baltimore (BWI) arrived on time 84% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0% were cancelled, and 3% arrived an hour or more late.
- Alaska Airlines was the most punctual airline here (94% on time); Southwest Airlines was the least (78%).
- Departures scheduled around 7am did best (94% on time); around 9pm did worst (78%).
- Tuesday was the most reliable day to fly (89% on time) and Wednesday the least (79%).
- The largest source of delay minutes was late-arriving aircraft (68%).
Which airline is most on time from PDX to BWI?
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 | 94% | 0.0% | 3 min | 0.0% | 80 |
| Southwest Airlines | 78% | 0.0% | 11 min | 4.2% | 120 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am94%80 flights
- 9pm78%120 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday86%0.0% cancelled
- Tuesday89%0.0% cancelled
- Wednesday79%0.0% cancelled
- Thursday86%0.0% cancelled
- Friday87%0.0% cancelled
- Saturday81%0.0% cancelled
- Sunday82%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.
- Late-arriving aircraft68%
- Airline (crew, maintenance, cleaning, fueling)27%
- Air traffic control & airport congestion5%
- Extreme weather0%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
No cancellation causes recorded in this period.
PDX to BWI: common questions
- How often are PDX to BWI flights on time?
- 84% 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 Portland to Baltimore cancelled?
- 0.0% of scheduled flights were cancelled (0 of 200).
- How long are typical delays?
- Across all flights the average arrival delay was 8 min (early arrivals count as zero). Flights that were late arrived 41 min behind schedule on average, and 2.5% of flights were an hour or more late.
- How long is taxi time at PDX?
- Flights on this route spent 14 min taxiing from the gate to takeoff on average.
Related routes
Return trip: BWI to PDX — 75% on time
More flights from Portland
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: PDX → BWI, nonstop flights by US airlines that report to the DOT. How we calculate this.