Seattle (SEA) to Las Vegas (LAS) flights
Alaska Airlines, Delta Air Lines, Southwest Airlines, Frontier Airlines fly nonstop from Seattle-Tacoma International Airport to Harry Reid International Airport, with about 110 flights a week in July 2026. The 867-mile flight takes about 2h 31m gate to gate.
- Distance
- 867 mi ยท 1,395 km
- Flight time
- 2h 31m
- Airlines
- 4
- Seats filled
- 83%
Airlines flying SEA to LAS
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Alaska Airlines | 49 | Boeing 737-900ER, Boeing 737 MAX 9, Boeing 737-800 | 378,126 | 2h 32m |
| Delta Air Lines | 34 | Boeing 737-800, Boeing 737-900ER, Airbus A320-100/200 | 234,072 | 2h 32m |
| Southwest Airlines | 21 | Boeing 737 MAX 8, Boeing 737-700 / MAX 7, Boeing 737-800 | 133,206 | 2h 25m |
| Frontier Airlines | 7 | Airbus A321, Airbus A320neo, Airbus A320-100/200 | 47,599 | 2h 36m |
| Spirit AirlinesCeased operations 2026-05-02 | n/a | Airbus A321 | 2,328 | 2h 25m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
SEA to LAS flight schedule
29 flight numbers flew this route in August 2026, 9 of them almost daily. The first usually leaves at 6:25am and the last at 9:29pm. 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 409Southwest Airlines | 6:25am | 8:55am | 12 | 100% |
| WN 4865Southwest Airlines | 6:35am | 9:05am | 4 | n/a |
| WN 663Southwest Airlines | 7:00am | 9:30am | 12 | 83% |
| DL 2922Delta Air Lines | 7:15am | 9:51am | 31 | 91% |
| AS 612Alaska Airlines | 7:48am | 10:29am | 31 | 86% |
| AS 1363Alaska Airlines | 8:00am | 10:47am | 12 | 100% |
| DL 2905Delta Air Lines | 9:45am | 12:20pm | 27 | 83% |
| AS 738Alaska Airlines | 11:31am | 2:16pm | 31 | 78% |
| DL 2880Delta Air Lines | 11:35am | 2:19pm | 30 | 80% |
| WN 4509Southwest Airlines | 12:40pm | 3:25pm | 8 | n/a |
| AS 658Alaska Airlines | 1:00pm | 3:35pm | 18 | 81% |
| WN 2825Southwest Airlines | 1:10pm | 3:40pm | 4 | n/a |
| WN 393Southwest Airlines | 2:35pm | 5:15pm | 12 | 17% |
| AS 678Alaska Airlines | 2:44pm | 5:23pm | 13 | 67% |
| AS 600Alaska Airlines | 3:18pm | 5:53pm | 13 | 79% |
| WN 1087Southwest Airlines | 3:20pm | 5:50pm | 5 | n/a |
| WN 1081Southwest Airlines | 4:10pm | 6:50pm | 8 | n/a |
| AS 1456Alaska Airlines | 4:19pm | 6:54pm | 15 | 55% |
| DL 2955Delta Air Lines | 4:23pm | 6:56pm | 31 | 72% |
| AS 703Alaska Airlines | 4:24pm | 7:03pm | 13 | 69% |
| AS 478Alaska Airlines | 6:32pm | 9:08pm | 17 | 73% |
| AS 768Alaska Airlines | 6:38pm | 9:17pm | 8 | 78% |
| WN 2185Southwest Airlines | 6:50pm | 9:25pm | 4 | n/a |
| WN 1309Southwest Airlines | 7:25pm | 10:00pm | 12 | 58% |
| AS 704Alaska Airlines | 8:25pm | 11:05pm | 31 | 84% |
| DL 2949Delta Air Lines | 8:30pm | 11:06pm | 31 | 79% |
| F9 2408Frontier Airlines | 8:53pm | 11:34pm | 27 | 68% |
| AS 636Alaska Airlines | 9:23pm | 11:59pm | 6 | 72% |
| F9 4204Frontier Airlines | 9:29pm | 12:11am | 4 | 72% |
Is SEA to LAS on time?
From September 2025 to August 2026, 78% of 5,620 flights arrived within 15 minutes of schedule and 0.9% were cancelled. Flights leaving around 7am were the most punctual (91%), those around 5pm the least (66%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (41%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Alaska Airlines | 2,621 | 79% | 11 min | 0.8% |
| Delta Air Lines | 1,748 | 81% | 11 min | 1.1% |
| Southwest Airlines | 977 | 70% | 17 min | 0.5% |
| Frontier Airlines | 274 | 69% | 41 min | 2.2% |
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 |
|---|---|---|---|
| 6am to 7am | 160 | 94% | |
| 7am to 8am | 685 | 91% | |
| 8am to 9am | 256 | 88% | |
| 9am to 10am | 186 | 86% | |
| 10am to 11am | 485 | 82% | |
| 11am to 12pm | 306 | 78% | |
| 12pm to 1pm | 553 | 75% | |
| 1pm to 2pm | 226 | 75% | |
| 2pm to 3pm | 298 | 73% | |
| 3pm to 4pm | 349 | 72% | |
| 4pm to 5pm | 415 | 68% | |
| 5pm to 6pm | 313 | 66% | |
| 6pm to 7pm | 402 | 72% | |
| 7pm to 8pm | 195 | 75% | |
| 8pm to 9pm | 553 | 75% | |
| 9pm to 10pm | 181 | 69% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 490 | 75,448 | |
| September 2025 | 440 | 64,172 | |
| October 2025 | 475 | 68,691 | |
| November 2025 | 439 | 61,640 | |
| December 2025 | 468 | 66,866 | |
| January 2026 | 456 | 59,490 | |
| February 2026 | 414 | 57,556 | |
| March 2026 | 467 | 66,603 | |
| April 2026 | 474 | 68,408 | |
| May 2026 | 492 | 70,461 | |
| June 2026 | 477 | 67,186 | |
| July 2026 | 489 | 69,432 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.