Route Reliability
Dallas → Seattle
DAL–SEA · 1,670 miles · Dallas Love Field to Seattle–Tacoma International Airport
- 71%
- Arrive within 15 minutes
- 14 min
- Average arrival delay
- 0.9%
- Cancelled
- 216
- Flights in the data
Data through May 2026.
Southwest Airlines is the only airline in this data on this route, arriving on time 71% of the time across 216 flights. No comparison to make.
What the data says
Morning-you made the right choice.
DAL–SEA flights departing between 6–9 AM arrived on time 74% of the time, versus 60% between 6–9 PM.
Sunday scaries are real for this one.
DAL–SEA flights arrived on time 79% of the time on Tuesdays and just 63% on Sundays. That gap is worth planning around.
Trending in the right direction.
DAL–SEA flights arrived on time 77% of the time over the last three months in the data, compared with 66% in the three months before that.
Flights on this route
The breakdown
- Mon76%(29 flights)
- Tue79%(28 flights)
- Wed76%(29 flights)
- Thu67%(30 flights)
- Fri67%(30 flights)
- Sat68%(38 flights)
- Sun63%(30 flights)
- 6–9 AM74%(80 flights)
- 9 AM–12 PM73%(74 flights)
- 12–3 PM—(2 flights)
- 6–9 PM60%(50 flights)
- 9 PM–12 AM—(8 flights)
Jun 63% → May 81% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 63% | 30 |
| July 2025 | 64% | 33 |
| August 2025 | 72% | 32 |
| September 2025 | 63% | 30 |
| March 2026 | 70% | 27 |
| April 2026 | 80% | 30 |
| May 2026 | 81% | 31 |
Same trip, other airports
Keep nerding
Based on 216 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.