Historical on-time performance
Seattle to Baltimore
Flights on SEA–BWI arrive on time 79% of the time over the last 12 months.
based on 663 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Not enough comparable data to name a most-on-time carrier — low-data carriers aren't ranked.
- Alaska AirlinesOn-time81%Medianon timep9025 minCancel0.5%Flights571
- Southwest AirlinesOn-time71%Medianon timep9040 minCancel0.0%Flights92
Why flights run late
Delay causes
- Airline44%
- Weather4%
- Air traffic (NAS)20%
- Late aircraft32%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline67%
- Weather33%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 3 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly SEA → BWI
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 75% to 79% on time.
- Overnights79% on time · p90 30 min · 733 flights
- Mornings78% on time · p90 25 min · 715 flights
- Middays75% on time · p90 30 min · 364 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 71% to 85% on time.
- Tuesdays85% on time · p90 20 min · 235 flights
- Wednesdays83% on time · p90 25 min · 258 flights
- Saturdays82% on time · p90 25 min · 246 flights
- Mondays76% on time · p90 30 min · 267 flights
- Thursdays75% on time · p90 25 min · 269 flights
- Fridays75% on time · p90 35 min · 268 flights
- Sundays71% on time · p90 35 min · 269 flights
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