Southwest Airlines
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Seattle–Tacoma International Airport
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Scan through all non-stop flights from Dallas to Seattle / Tacoma. The full flight schedule below gives an overview of all non-stop flights from DAL to SEA, which includes the daily timetable of every operating airline for the upcoming 12 months.
Note: for airline-specific flight schedules, please scroll further down.
In Seattle / Tacoma, the summers are known for being warm, long, and dry, with temperatures typically reaching about 30°C (86°F). The area’s breathtaking scenery complements the sun-filled lifestyle, making it a popular destination for visitors all year round who are looking for relaxation, fun by the water, and the beauty of the outdoors.
Seattle / Tacoma is best explored from mid-spring to summer, specifically between April and September, as most rainfall occurs from October to February.

Currently, there is only one airline operating non-stop flights from Dallas DAL to Seattle / Tacoma SEA, which is Southwest Airlines. This section gives an overview of the flight schedules and timetables of every airline with direct flights for this route.
Click an airline below to view their DAL SEA flight schedule.
Flights from DAL to SEA are operated 7 times a week, with an average of 1 flight per day. Departure times vary between 07:25 - 20:55. The earliest flight departs at 07:25, the last flight departs at 20:55. However, this depends on the date you are flying so please check with the full flight schedule above to see which departure times are available on your preferred date(s) of travel.
On this non-stop route, you can fly in Economy only.
The fastest direct flight from Dallas to Seattle / Tacoma takes 4 hours and 20 minutes. The flight distance between Dallas and Seattle / Tacoma is 1,667 miles (or 2,683 km).
There are 3 airports in Seattle / Tacoma: Seattle–Tacoma International Airport (SEA), Boeing Field/King County Internat (BFI) and Kenmore Air Harbor Seaplane Base (FAA: W55) (LKE).
There are 7 flights per week flying from Dallas to Seattle / Tacoma (as of April 2026).
4 hours and 20 minutes is the average flight time from Dallas to Seattle / Tacoma.
The distance from Dallas to Seattle / Tacoma is 1,667 miles (2,683 kilometers).
Southwest Airlines is the only airline flying nonstop from Dallas to Seattle / Tacoma.
There are no alliances flying direct from Dallas to Seattle / Tacoma at the moment.
You can fly non-stop in Economy only.
Aircraft types that fly from Dallas to Seattle / Tacoma:
The earliest flight departs at 07:25 from Dallas and arrives at 09:40 at Seattle / Tacoma.
The latest flight departs at 20:55 from Dallas and arrives at 23:05 at Seattle / Tacoma.
1,667 miles (2,683 km) · 4h 20m
07:25
09:40
Southwest Airlines
WN 978
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
07:30
09:50
Southwest Airlines
WN 173
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
07:30
09:50
Southwest Airlines
WN 173
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
07:30
09:50
Southwest Airlines
WN 173
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
07:35
09:55
Southwest Airlines
WN 978
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
08:00
10:15
Southwest Airlines
WN 978
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
09:00
11:20
Southwest Airlines
WN 978
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
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