Milwaukee (MKE) to Seattle (SEA) flights
Alaska Airlines flies nonstop from General Mitchell International Airport to Seattle-Tacoma International Airport, with about 14 flights a week in July 2026. The 1,694-mile flight takes about 4h 23m gate to gate.
- Distance
- 1,694 mi · 2,726 km
- Flight time
- 4h 23m
- Airlines
- 1
- Seats filled
- 82%
Airlines flying MKE to SEA
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Alaska Airlines | 14 | Boeing 737-900ER, Boeing 737 MAX 9, Boeing 737-800 | 72,788 | 4h 23m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
MKE to SEA flight schedule
2 flight numbers flew this route in August 2026, 2 of them almost daily. The first usually leaves at 6:02am and the last at 2:59pm. 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 440Alaska Airlines | 6:02am | 8:31am | 31 | 92% |
| AS 507Alaska Airlines | 2:59pm | 5:24pm | 31 | 78% |
Is MKE to SEA on time?
From September 2025 to August 2026, 81% of 509 flights arrived within 15 minutes of schedule and 0.4% were cancelled. Flights leaving around 6am were the most punctual (93%), those around 3pm the least (76%). Most delay time was caused by air traffic control and airport congestion (40%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Alaska Airlines | 509 | 81% | 9 min | 0.4% |
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 | 103 | 93% | |
| 7am to 8am | 80 | 83% | |
| 2pm to 3pm | 91 | 78% | |
| 3pm to 4pm | 202 | 76% | |
| 4pm to 5pm | 33 | 76% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 62 | 9,779 | |
| September 2025 | 59 | 7,854 | |
| October 2025 | 34 | 4,487 | |
| November 2025 | 33 | 4,367 | |
| December 2025 | 40 | 5,829 | |
| January 2026 | 25 | 3,342 | |
| February 2026 | 18 | 2,431 | |
| March 2026 | 25 | 3,975 | |
| April 2026 | 35 | 4,705 | |
| May 2026 | 55 | 7,981 | |
| June 2026 | 59 | 8,874 | |
| July 2026 | 61 | 9,164 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.