Airline reliability
Alaska Airlines on-time performance
Reliability of Alaska Airlines flights across 91 airports and 440 routes, September 2025 to August 2026.
91 airports440 routes
- On time
- 78.5% Rank 4 of 14 airlines
- Cancelled
- 1.2% All airlines 1.9%
- 60+ minutes late
- 4.8% All airlines 8.1%
- Scheduled flights
- 309,844 12 months
What this means
Alaska Airlines ranked 4 of 14 on on-time arrival.
- Alaska Airlines reported 309,844 scheduled flights over the 12 months to August 2026. 78.5% arrived within 15 minutes of schedule, 2.9 points higher than the average for all reporting airlines (75.6%).
- 1.2% of its flights were cancelled (all-airline average 1.9%) and 4.8% arrived an hour or more late.
- Its most punctual busy route was Santa Ana (SNA) to Portland (PDX) (92.2% on time); its least punctual was Los Angeles (LAX) to San Francisco (SFO) (50.5%).
- Over the last 3 years, October was the most reliable month for Alaska Airlines (81.9% on time) and July the least reliable (72.6%).
- Cancellations peaked in January, when 6.2% of flights were cancelled.
- Flights scheduled to depart 6 am to 7 am were the most punctual (89.5% on time); flights scheduled to depart 7 pm to 8 pm were the least (72.9%).
Month by month, last 12 months
Share of scheduled flights on time All airlines 75.6%
Show as table
| Period | On time | Flights |
|---|---|---|
| Sep 2025 | 82.9% | 20,747 |
| Oct 2025 | 78.2% | 20,637 |
| Nov 2025 | 79.8% | 19,752 |
| Dec 2025 | 70.6% | 21,102 |
| Jan 2026 | 77.1% | 26,436 |
| Feb 2026 | 81.7% | 24,013 |
| Mar 2026 | 76.4% | 27,793 |
| Apr 2026 | 83.7% | 27,222 |
| May 2026 | 82.4% | 29,184 |
| Jun 2026 | 80.0% | 29,891 |
| Jul 2026 | 75.9% | 31,682 |
| Aug 2026 | 74.2% | 31,385 |
Best and worst months for Alaska Airlines
Share of scheduled flights on time 12-month average 78.5%
Show as table
| Period | On time | Flights |
|---|---|---|
| January | 73.1% | 62,374 |
| February | 80.4% | 57,191 |
| March | 77.8% | 66,357 |
| April | 81.3% | 65,677 |
| May | 77.9% | 72,192 |
| June | 74.9% | 74,633 |
| July | 72.6% | 79,185 |
| August | 73.4% | 77,626 |
| September | 81.3% | 63,721 |
| October | 81.9% | 61,446 |
| November | 81.7% | 58,469 |
| December | 76.3% | 60,529 |
On-time rate by departure hour
Share of scheduled flights on time
Show as table
| Period | On time | Flights |
|---|---|---|
| Departing before 6 am | 87.7% | 5,775 |
| Departing 6 am to 7 am | 89.5% | 12,373 |
| Departing 7 am to 8 am | 84.8% | 36,201 |
| Departing 8 am to 9 am | 81.6% | 23,571 |
| Departing 9 am to 10 am | 80.2% | 19,004 |
| Departing 10 am to 11 am | 79.2% | 21,794 |
| Departing 11 am to noon | 77.9% | 20,030 |
| Departing noon to 1 pm | 76.6% | 14,570 |
| Departing 1 pm to 2 pm | 74.1% | 16,363 |
| Departing 2 pm to 3 pm | 77.6% | 19,077 |
| Departing 3 pm to 4 pm | 74.4% | 15,439 |
| Departing 4 pm to 5 pm | 74.6% | 15,028 |
| Departing 5 pm to 6 pm | 75.5% | 22,803 |
| Departing 6 pm to 7 pm | 73.7% | 19,776 |
| Departing 7 pm to 8 pm | 72.9% | 15,516 |
| Departing 8 pm to 9 pm | 74.2% | 10,334 |
| Departing 9 pm to 10 pm | 78.9% | 11,966 |
| Departing 10 pm to 11 pm | 77.4% | 4,998 |
| Departing 11 pm to midnight | 81.4% | 5,226 |
Most punctual Alaska Airlines routes
| Route | On time | Cancelled | 60+ min late | Flights |
|---|---|---|---|---|
| Santa Ana (SNA) to Portland (PDX) | 92.2% | 1.0% | 1.2% | 1,543 |
| Palm Springs (PSP) to Portland (PDX) | 92.1% | 1.8% | 2.8% | 508 |
| Boise (BOI) to Portland (PDX) | 92.0% | 0.1% | 2.9% | 721 |
| Portland (PDX) to Sacramento (SMF) | 91.6% | 0.9% | 1.3% | 452 |
| Ontario (ONT) to Portland (PDX) | 91.4% | 0.8% | 2.9% | 476 |
| Anchorage (ANC) to Portland (PDX) | 90.5% | 0.0% | 3.0% | 1,240 |
| Anchorage (ANC) to Phoenix (PHX) | 90.4% | 0.0% | 0.8% | 363 |
| Anchorage (ANC) to Los Angeles (LAX) | 90.2% | 0.0% | 1.5% | 399 |
| Burbank (BUR) to Portland (PDX) | 90.1% | 0.8% | 3.0% | 983 |
| Portland (PDX) to Santa Ana (SNA) | 90.0% | 1.0% | 1.0% | 1,543 |
Least punctual Alaska Airlines routes
| Route | On time | Cancelled | 60+ min late | Flights |
|---|---|---|---|---|
| Los Angeles (LAX) to San Francisco (SFO) | 50.5% | 0.7% | 15.6% | 1,049 |
| San Diego (SAN) to San Francisco (SFO) | 52.3% | 1.5% | 14.8% | 331 |
| Seattle (SEA) to San Francisco (SFO) | 55.4% | 1.1% | 12.1% | 2,727 |
| Seattle (SEA) to Honolulu (HNL) | 60.8% | 1.3% | 10.4% | 1,659 |
| Cleveland (CLE) to Seattle (SEA) | 61.6% | 1.5% | 9.5% | 461 |
| Kahului (OGG) to Los Angeles (LAX) | 62.2% | 0.8% | 6.6% | 376 |
| Portland (PDX) to Honolulu (HNL) | 62.3% | 2.0% | 4.7% | 612 |
| Las Vegas (LAS) to San Francisco (SFO) | 62.7% | 0.9% | 10.3% | 1,102 |
| Chicago (ORD) to Seattle (SEA) | 64.1% | 1.8% | 12.0% | 1,778 |
| Washington (DCA) to San Francisco (SFO) | 64.7% | 1.1% | 13.5% | 363 |
Routes with the most Alaska Airlines cancellations
| Route | On time | Cancelled | 60+ min late | Flights |
|---|---|---|---|---|
| Yakutat (YAK) to Cordova (CDV) | 82.9% | 4.7% | 5.2% | 362 |
| Petersburg (PSG) to Juneau (JNU) | 82.0% | 4.4% | 4.4% | 362 |
| Ketchikan (KTN) to Sitka (SIT) | 69.9% | 4.4% | 7.9% | 365 |
| Anchorage (ANC) to Kodiak (ADQ) | 82.1% | 4.2% | 4.4% | 866 |
| Petersburg (PSG) to Wrangell (WRG) | 81.8% | 4.1% | 4.1% | 362 |
| Sitka (SIT) to Juneau (JNU) | 80.8% | 3.9% | 5.7% | 725 |
| Kodiak (ADQ) to Anchorage (ANC) | 81.1% | 3.8% | 5.2% | 866 |
| Nome (OME) to Anchorage (ANC) | 81.8% | 3.8% | 4.6% | 373 |
| Newark (EWR) to San Diego (SAN) | 73.5% | 3.7% | 7.9% | 328 |
| Anchorage (ANC) to Kotzebue (OTZ) | 83.6% | 3.6% | 5.0% | 360 |
Busiest Alaska Airlines routes
| Route | On time | Cancelled | 60+ min late | Flights |
|---|---|---|---|---|
| Seattle (SEA) to Anchorage (ANC) | 75.7% | 0.7% | 4.6% | 4,999 |
| Anchorage (ANC) to Seattle (SEA) | 85.6% | 0.9% | 3.5% | 4,997 |
| Kahului (OGG) to Honolulu (HNL) | 76.4% | 1.8% | 3.8% | 4,653 |
| Honolulu (HNL) to Kahului (OGG) | 76.8% | 1.7% | 3.5% | 4,650 |
| Lihue (LIH) to Honolulu (HNL) | 76.9% | 2.5% | 4.4% | 3,954 |
| Honolulu (HNL) to Lihue (LIH) | 76.7% | 2.3% | 3.5% | 3,952 |
| Kona (KOA) to Honolulu (HNL) | 76.2% | 1.8% | 4.2% | 3,697 |
| Honolulu (HNL) to Kona (KOA) | 80.6% | 1.6% | 2.7% | 3,696 |
| Seattle (SEA) to Los Angeles (LAX) | 79.7% | 0.9% | 3.4% | 3,293 |
| Los Angeles (LAX) to Seattle (SEA) | 84.4% | 0.9% | 3.6% | 3,292 |
Sources & data dates
- Source
- U.S. DOT Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987-present)
- Period
- September 2025 to August 2026 (12 months); month-of-year patterns September 2023 to August 2026
- Data through
- August 2026
- Processed
- 2026-11-03
- Scope
- Scheduled nonstop domestic flights operated by Alaska Airlines (AS).
- Method
- Rates use all scheduled flights as the denominator; cancelled and diverted flights count as not on time. Figures based on fewer than 50 scheduled flights are suppressed. Full methodology.