Dallas-Fort Worth (DFW) to Seattle (SEA) flights

American Airlines, Alaska Airlines, Delta Air Lines fly nonstop from Dallas Fort Worth International Airport to Seattle-Tacoma International Airport, with about 113 flights a week in July 2026. The 1,660-mile flight takes about 4h 19m gate to gate.

From

DFW

Dallas-Fort Worth

Dallas Fort Worth International Airport

SEA

Seattle

Seattle-Tacoma International Airport

Distance: 1,660 mi · 2,672 km
Flight time: 4h 19m
Airlines: 3
Seats filled: 89%

Flights a week, July 2026

5,122 flights and 795,645 passengers in 12 months

Map data: Natural Earth. Lines follow the shortest (great-circle) path.

Airlines flying DFW to SEA

Airline	Flights a week	Aircraft	Passengers (12 months)	Flight time
American Airlines	59	Airbus A321, Boeing 737-800, Boeing 737 MAX 8	456,392	4h 17m
Alaska Airlines	41	Boeing 737-900ER, Boeing 737 MAX 9, Boeing 737-800	266,400	4h 22m
Delta Air Lines	14	Airbus A220-100, Airbus A220-300, Airbus A321	69,552	4h 22m
Frontier AirlinesSeasonal or ended	n/a	Airbus A321, Airbus A320neo	3,301	4h 26m

Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.

DFW to SEA flight schedule

18 flight numbers flew this route in August 2026, 14 of them almost daily. The first usually leaves at 6:24am and the last at 10:30pm. 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)
AS 543Alaska Airlines	6:24am	8:45am	28	83%
DL 804Delta Air Lines	6:30am	8:46am	31	85%
AA 707American Airlines	7:10am	9:25am	31	82%
AA 767American Airlines	8:32am	10:58am	31	74%
AS 365Alaska Airlines	9:00am	11:20am	31	79%
AA 1483American Airlines	10:50am	1:10pm	19	63%
AA 717American Airlines	10:56am	1:16pm	24	74%
AA 757American Airlines	12:40pm	2:56pm	31	72%
AS 415Alaska Airlines	1:02pm	3:23pm	31	85%
AA 727American Airlines	2:25pm	4:41pm	31	55%
AS 321Alaska Airlines	3:49pm	6:11pm	13	69%
AS 1574Alaska Airlines	4:16pm	6:37pm	17	80%
AA 2009American Airlines	4:30pm	6:47pm	27	59%
DL 1923Delta Air Lines	5:00pm	7:27pm	29	90%
AS 322Alaska Airlines	6:03pm	8:24pm	26	56%
AA 2003American Airlines	8:05pm	10:26pm	31	55%
AS 550Alaska Airlines	8:45pm	11:05pm	26	66%
AA 1487American Airlines	10:30pm	12:50am	12	44%

Is DFW to SEA on time?

From September 2025 to August 2026, 71% of 5,227 flights arrived within 15 minutes of schedule and 1.8% were cancelled. Flights leaving around 6am were the most punctual (84%), those around 8pm the least (59%). Most delay time was caused by late-arriving aircraft (41%).

Airline	Flights	On time	Average delay	Cancelled
American Airlines	2,735	65%	23 min	2.2%
Alaska Airlines	1,758	77%	13 min	1.2%
Delta Air Lines	720	79%	19 min	1.7%
Frontier Airlines	14	57%	13 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
6am to 7am	476	84%
7am to 8am	429	82%
8am to 9am	497	73%
9am to 10am	280	81%
10am to 11am	395	77%
12pm to 1pm	218	73%
1pm to 2pm	286	77%
2pm to 3pm	232	60%
3pm to 4pm	280	76%
4pm to 5pm	619	69%
5pm to 6pm	204	67%
6pm to 7pm	330	67%
7pm to 8pm	239	63%
8pm to 9pm	424	59%
9pm to 10pm	109	48%
10pm to 11pm	187	46%

Flights by month

Month	Flights	Passengers
August 2025	462	74,423
September 2025	422	65,314
October 2025	437	66,663
November 2025	404	58,535
December 2025	450	68,987
January 2026	360	52,546
February 2026	341	51,361
March 2026	377	58,193
April 2026	410	61,981
May 2026	477	76,595
June 2026	481	77,595
July 2026	501	83,452

Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.