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

American Airlines, Alaska Airlines, Delta Air Lines fly nonstop from Seattle-Tacoma International Airport to Dallas Fort Worth International Airport, with about 113 flights a week in July 2026. The 1,660-mile flight takes about 3h 51m gate to gate.

From

SEA

Seattle

Seattle-Tacoma International Airport

DFW

Dallas-Fort Worth

Dallas Fort Worth International Airport

Distance: 1,660 mi · 2,672 km
Flight time: 3h 51m
Airlines: 3
Seats filled: 88%

Flights a week, July 2026

5,079 flights and 782,276 passengers in 12 months

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

Airlines flying SEA to DFW

Airline	Flights a week	Aircraft	Passengers (12 months)	Flight time
American Airlines	58	Airbus A321, Boeing 737-800, Boeing 737 MAX 8	440,020	3h 50m
Alaska Airlines	41	Boeing 737-900ER, Boeing 737 MAX 9, Boeing 737-800	268,707	3h 53m
Delta Air Lines	14	Airbus A220-100, Airbus A220-300, Boeing 737-800	69,532	3h 52m
Frontier AirlinesSeasonal or ended	n/a	Airbus A321, Airbus A320neo	4,017	4h 0m

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

SEA to DFW flight schedule

18 flight numbers flew this route in August 2026, 14 of them almost daily. The first usually leaves at 12:40am and the last at 11:16pm. 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)
AA 1003American Airlines	12:40am	6:35am	8	n/a
AA 2748American Airlines	5:00am	10:59am	31	94%
AS 414Alaska Airlines	6:02am	11:59am	28	91%
AA 1667American Airlines	7:40am	1:36pm	31	88%
AS 340Alaska Airlines	7:45am	1:49pm	31	84%
DL 803Delta Air Lines	9:15am	3:13pm	31	81%
AA 707American Airlines	10:15am	4:24pm	31	77%
AS 341Alaska Airlines	10:59am	5:00pm	26	63%
AA 767American Airlines	11:48am	5:50pm	31	68%
AS 549Alaska Airlines	12:13pm	6:21pm	28	71%
AA 717American Airlines	2:07pm	8:13pm	31	71%
AA 757American Airlines	3:47pm	9:50pm	31	72%
AA 727American Airlines	5:31pm	11:33pm	12	55%
DL 870Delta Air Lines	5:55pm	11:55pm	31	74%
AS 424Alaska Airlines	5:56pm	11:59pm	17	79%
AS 1648Alaska Airlines	10:58pm	5:00am	8	n/a
AS 542Alaska Airlines	11:03pm	5:02am	30	80%
AA 2003American Airlines	11:16pm	5:15am	31	60%

Is SEA to DFW on time?

From September 2025 to August 2026, 78% of 5,228 flights arrived within 15 minutes of schedule and 1.7% were cancelled. Flights leaving around 5am were the most punctual (94%), those around 11pm the least (68%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (44%).

Airline	Flights	On time	Average delay	Cancelled
American Airlines	2,736	77%	23 min	2.2%
Alaska Airlines	1,758	81%	9 min	0.9%
Delta Air Lines	720	77%	19 min	1.5%
Frontier Airlines	14	43%	17 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
12am to 1am	316	86%
5am to 6am	283	94%
6am to 7am	260	92%
7am to 8am	482	88%
8am to 9am	238	87%
9am to 10am	494	78%
10am to 11am	444	73%
11am to 12pm	414	69%
12pm to 1pm	135	74%
1pm to 2pm	294	76%
2pm to 3pm	197	68%
3pm to 4pm	223	69%
5pm to 6pm	858	74%
6pm to 7pm	126	76%
11pm to 12am	344	68%

Flights by month

Month	Flights	Passengers
August 2025	458	76,861
September 2025	422	67,104
October 2025	438	68,970
November 2025	395	59,561
December 2025	451	69,883
January 2026	360	50,333
February 2026	341	49,347
March 2026	373	55,973
April 2026	409	59,619
May 2026	460	66,557
June 2026	473	76,639
July 2026	499	81,429

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