BWI to PDX flight delays
Baltimore, MD (BWI) Portland, OR (PDX) · 2,358 miles
169 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
76.97%
Arrived on time
Within 15 minutes of schedule
1.18%
Cancelled
Share of scheduled flights
57 min
When late, late by
Average across delayed arrivals
15 min
Delay per flight
Averaged over every flight flown
What the record says about this route
Only Southwest Airlines flies this route in the published record, so there is no choice to weigh — the route's figures and the airline's are the same figures.
The Baltimore to Portland route sits close to the middle of the record — neither notably punctual nor notably late.
Which airline should you fly on this route?
Over January 2025 – August 2026, Southwest Airlines arrived on time most often on BWI to PDX. Flights ran closest to schedule in May and worst in October.
Every airline on BWI to PDX
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| Southwest Airlines | 120 | 72.41% | 1.67% | 59 min | D |
| Alaska Airlines | 49 | 87.76% | 0% | 47 min | — |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
PDX to BWI Portland back to Baltimore 80.47% on time BCommon questions
Are flights from Baltimore to Portland usually delayed?
76.97% of flights on the BWI to PDX route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is about the same as the average route in this record.
Which airlines fly from Baltimore to Portland?
Only Southwest Airlines appears in the published record on this route, with 120 flights and 72.41% arriving on time.
How often are BWI to PDX flights cancelled?
1.18% of scheduled flights did not operate — about 12 in every thousand. That is in the normal range.
When BWI to PDX flights are late, how late are they?
About 57 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on BWI to PDX during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →