Seattle (SEA) to Dallas (DAL) flights
Southwest Airlines flies nonstop from Seattle-Tacoma International Airport to Dallas Love Field, with about 8 flights a week in July 2026. The 1,670-mile flight takes about 3h 51m gate to gate.
- Distance
- 1,670 mi · 2,688 km
- Flight time
- 3h 51m
- Airlines
- 1
- Seats filled
- 89%
Airlines flying SEA to DAL
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | 8 | Boeing 737 MAX 8, Boeing 737-800, Boeing 737-700 / MAX 7 | 33,189 | 3h 51m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
SEA to DAL flight schedule
4 flight numbers flew this route in August 2026. The first usually leaves at 11:55am and the last at 2:25pm. Times are local and can change; check with the airline before you book.
| Flight | Departs | Arrives | Days flown in August 2026 | On time (12 months) |
|---|---|---|---|---|
| WN 682Southwest Airlines | 11:55am | 6:00pm | 4 | n/a |
| WN 1970Southwest Airlines | 1:30pm | 7:25pm | 12 | 18% |
| WN 1361Southwest Airlines | 1:40pm | 7:40pm | 8 | n/a |
| WN 1251Southwest Airlines | 2:25pm | 8:25pm | 4 | n/a |
Is SEA to DAL on time?
From September 2025 to August 2026, 39% of 219 flights arrived within 15 minutes of schedule and 0% were cancelled. Flights leaving around 2pm were the most punctual (40%), those around 3pm the least (25%). Most delay time was caused by late-arriving aircraft (42%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 219 | 39% | 36 min | 0% |
Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.
On-time arrivals by departure time
| Scheduled departure | Flights | On time, relative | On time |
|---|---|---|---|
| 12pm to 1pm | 10 | 100% | |
| 1pm to 2pm | 49 | 33% | |
| 2pm to 3pm | 55 | 40% | |
| 3pm to 4pm | 84 | 25% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 32 | 5,057 | |
| September 2025 | 30 | 4,396 | |
| October 2025 | 1 | 131 | |
| March 2026 | 27 | 3,875 | |
| April 2026 | 30 | 4,189 | |
| May 2026 | 31 | 4,699 | |
| June 2026 | 34 | 5,336 | |
| July 2026 | 34 | 5,506 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.