Las Vegas (LAS) to Seattle (SEA) flights

Alaska Airlines, Delta Air Lines, Southwest Airlines, Frontier Airlines fly nonstop from Harry Reid International Airport to Seattle-Tacoma International Airport, with about 110 flights a week in July 2026. The 867-mile flight takes about 2h 40m gate to gate.

From

LAS

Las Vegas

Harry Reid International Airport

SEA

Seattle

Seattle-Tacoma International Airport

Distance: 867 mi · 1,395 km
Flight time: 2h 40m
Airlines: 4
Seats filled: 83%

Flights a week, July 2026

5,564 flights and 799,992 passengers in 12 months

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

Airlines flying LAS to SEA

Airline	Flights a week	Aircraft	Passengers (12 months)	Flight time
Alaska Airlines	49	Boeing 737-900ER, Boeing 737 MAX 9, Boeing 737-800	378,656	2h 42m
Delta Air Lines	34	Boeing 737-800, Boeing 737-900ER, Airbus A320-100/200	234,128	2h 39m
Southwest Airlines	21	Boeing 737 MAX 8, Boeing 737-700 / MAX 7, Boeing 737-800	136,569	2h 35m
Frontier Airlines	7	Airbus A321, Airbus A320neo, Airbus A320-100/200	48,470	2h 47m
Spirit AirlinesCeased operations 2026-05-02	n/a	Airbus A321	2,169	2h 40m

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

LAS to SEA flight schedule

24 flight numbers flew this route in August 2026, 10 of them almost daily. The first usually leaves at 6:02am and the last at 10:10pm. 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 701Alaska Airlines	6:02am	8:45am	31	96%
AS 741Alaska Airlines	6:02am	8:48am	13	87%
DL 2844Delta Air Lines	6:10am	8:45am	31	95%
AS 479Alaska Airlines	7:05am	9:48am	18	84%
F9 2407Frontier Airlines	7:45am	10:39am	31	79%
WN 2283Southwest Airlines	7:45am	10:30am	16	69%
WN 279Southwest Airlines	10:00am	12:50pm	12	42%
AS 629Alaska Airlines	10:28am	1:14pm	31	88%
DL 2922Delta Air Lines	11:00am	1:51pm	31	91%
AS 785Alaska Airlines	11:30am	2:14pm	31	85%
AS 676Alaska Airlines	12:16pm	3:00pm	31	77%
WN 4512Southwest Airlines	1:05pm	3:55pm	4	n/a
DL 2905Delta Air Lines	1:25pm	4:09pm	27	86%
WN 1719Southwest Airlines	2:05pm	4:50pm	8	n/a
AS 698Alaska Airlines	3:12pm	5:57pm	18	64%
DL 2880Delta Air Lines	3:39pm	6:30pm	30	85%
WN 3106Southwest Airlines	3:55pm	6:45pm	12	58%
AS 749Alaska Airlines	4:18pm	7:04pm	19	77%
AS 552Alaska Airlines	6:12pm	9:00pm	8	82%
AS 1681Alaska Airlines	6:49pm	9:34pm	13	50%
DL 2956Delta Air Lines	7:16pm	9:59pm	31	71%
WN 2940Southwest Airlines	8:45pm	11:25pm	12	58%
WN 3604Southwest Airlines	9:40pm	12:20am	12	91%
WN 1646Southwest Airlines	10:10pm	12:50am	4	n/a

Is LAS to SEA on time?

From September 2025 to August 2026, 82% of 5,617 flights arrived within 15 minutes of schedule and 1% were cancelled. Flights leaving around 6am were the most punctual (95%), those around 7pm the least (74%). Most delay time was caused by late-arriving aircraft (47%).

Airline	Flights	On time	Average delay	Cancelled
Alaska Airlines	2,617	83%	12 min	1.2%
Delta Air Lines	1,748	87%	12 min	1.1%
Southwest Airlines	978	71%	14 min	0.3%
Frontier Airlines	274	80%	10 min	1.1%

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	626	95%
7am to 8am	508	84%
8am to 9am	253	83%
9am to 10am	196	90%
10am to 11am	477	85%
11am to 12pm	598	90%
12pm to 1pm	256	85%
1pm to 2pm	438	82%
2pm to 3pm	338	78%
3pm to 4pm	353	75%
4pm to 5pm	205	71%
5pm to 6pm	378	79%
6pm to 7pm	193	73%
7pm to 8pm	366	74%
9pm to 10pm	208	74%
10pm to 11pm	115	57%

Flights by month

Month	Flights	Passengers
August 2025	490	72,060
September 2025	440	63,920
October 2025	473	67,537
November 2025	438	61,586
December 2025	466	65,752
January 2026	458	64,356
February 2026	413	57,834
March 2026	467	67,570
April 2026	474	67,716
May 2026	492	74,382
June 2026	475	69,175
July 2026	487	68,594

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