Airline reliability
Frontier Airlines on-time performance
Reliability of Frontier Airlines flights across 90 airports and 662 routes, September 2025 to August 2026.
90 airports662 routes
- On time
- 71.1% Rank 11 of 14 airlines
- Cancelled
- 2.0% All airlines 1.9%
- 60+ minutes late
- 11.0% All airlines 8.1%
- Scheduled flights
- 213,022 12 months
What this means
Frontier Airlines ranked 11 of 14 on on-time arrival.
- Frontier Airlines reported 213,022 scheduled flights over the 12 months to August 2026. 71.1% arrived within 15 minutes of schedule, 4.5 points lower than the average for all reporting airlines (75.6%).
- 2.0% of its flights were cancelled (all-airline average 1.9%) and 11.0% arrived an hour or more late.
- Its most punctual busy route was Salt Lake City (SLC) to Los Angeles (LAX) (89.1% on time); its least punctual was Atlanta (ATL) to New York (LGA) (42.7%).
- Over the last 3 years, November was the most reliable month for Frontier Airlines (76.9% on time) and July the least reliable (62.1%).
- Cancellations peaked in July, when 3.6% of flights were cancelled.
- Flights scheduled to depart 6 am to 7 am were the most punctual (82.7% on time); flights scheduled to depart 10 pm to 11 pm were the least (60.0%).
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 | 79.2% | 14,896 |
| Oct 2025 | 77.3% | 16,935 |
| Nov 2025 | 74.3% | 17,047 |
| Dec 2025 | 66.6% | 16,724 |
| Jan 2026 | 69.4% | 15,382 |
| Feb 2026 | 77.2% | 15,056 |
| Mar 2026 | 67.8% | 20,119 |
| Apr 2026 | 73.1% | 18,540 |
| May 2026 | 76.1% | 18,423 |
| Jun 2026 | 69.7% | 19,104 |
| Jul 2026 | 62.5% | 20,482 |
| Aug 2026 | 64.4% | 20,314 |
Best and worst months for Frontier Airlines
Share of scheduled flights on time 12-month average 71.1%
Show as table
| Period | On time | Flights |
|---|---|---|
| January | 70.9% | 45,287 |
| February | 76.8% | 44,653 |
| March | 69.2% | 56,289 |
| April | 71.6% | 53,072 |
| May | 69.5% | 53,106 |
| June | 63.7% | 53,808 |
| July | 62.1% | 56,323 |
| August | 66.1% | 55,824 |
| September | 74.9% | 48,740 |
| October | 74.8% | 52,006 |
| November | 76.9% | 50,510 |
| December | 72.9% | 49,716 |
On-time rate by departure hour
Share of scheduled flights on time
Show as table
| Period | On time | Flights |
|---|---|---|
| Departing before 6 am | 78.5% | 8,098 |
| Departing 6 am to 7 am | 82.7% | 18,085 |
| Departing 7 am to 8 am | 82.5% | 10,623 |
| Departing 8 am to 9 am | 79.3% | 11,322 |
| Departing 9 am to 10 am | 78.1% | 11,638 |
| Departing 10 am to 11 am | 76.6% | 11,399 |
| Departing 11 am to noon | 75.5% | 12,129 |
| Departing noon to 1 pm | 74.9% | 12,104 |
| Departing 1 pm to 2 pm | 71.0% | 10,570 |
| Departing 2 pm to 3 pm | 70.3% | 10,917 |
| Departing 3 pm to 4 pm | 69.5% | 11,597 |
| Departing 4 pm to 5 pm | 65.3% | 13,542 |
| Departing 5 pm to 6 pm | 62.7% | 11,302 |
| Departing 6 pm to 7 pm | 61.8% | 11,190 |
| Departing 7 pm to 8 pm | 63.0% | 10,537 |
| Departing 8 pm to 9 pm | 62.5% | 12,466 |
| Departing 9 pm to 10 pm | 62.0% | 10,460 |
| Departing 10 pm to 11 pm | 60.0% | 11,579 |
| Departing 11 pm to midnight | 68.6% | 3,464 |
Most punctual Frontier Airlines routes
| Route | On time | Cancelled | 60+ min late | Flights |
|---|---|---|---|---|
| Salt Lake City (SLC) to Los Angeles (LAX) | 89.1% | 1.1% | 3.4% | 475 |
| Las Vegas (LAS) to Salt Lake City (SLC) | 88.2% | 1.1% | 4.7% | 535 |
| Ontario (ONT) to Denver (DEN) | 85.8% | 0.7% | 5.4% | 558 |
| Los Angeles (LAX) to Salt Lake City (SLC) | 84.2% | 1.3% | 4.8% | 475 |
| Tampa (TPA) to Baltimore (BWI) | 84.0% | 2.1% | 5.3% | 337 |
| Phoenix (PHX) to Salt Lake City (SLC) | 83.5% | 1.3% | 4.7% | 708 |
| Denver (DEN) to Los Angeles (LAX) | 82.7% | 0.8% | 5.4% | 797 |
| Cincinnati (CVG) to Tampa (TPA) | 82.5% | 0.3% | 6.7% | 372 |
| Orlando (MCO) to Denver (DEN) | 82.4% | 0.9% | 6.2% | 896 |
| Austin (AUS) to Denver (DEN) | 82.3% | 0.7% | 6.6% | 606 |
Least punctual Frontier Airlines routes
| Route | On time | Cancelled | 60+ min late | Flights |
|---|---|---|---|---|
| Atlanta (ATL) to New York (LGA) | 42.7% | 6.8% | 26.1% | 950 |
| Los Angeles (LAX) to San Francisco (SFO) | 46.6% | 2.3% | 22.0% | 395 |
| New York (LGA) to Atlanta (ATL) | 49.6% | 7.7% | 23.3% | 949 |
| New York (LGA) to Orlando (MCO) | 51.9% | 7.4% | 19.2% | 339 |
| San Juan (SJU) to Atlanta (ATL) | 53.5% | 2.1% | 17.8% | 383 |
| Philadelphia (PHL) to San Juan (SJU) | 53.7% | 3.2% | 17.0% | 915 |
| Atlanta (ATL) to San Juan (SJU) | 55.0% | 1.8% | 14.0% | 387 |
| Atlanta (ATL) to Newark (EWR) | 55.9% | 4.2% | 21.1% | 707 |
| Las Vegas (LAS) to San Francisco (SFO) | 58.4% | 1.7% | 14.4% | 904 |
| Atlanta (ATL) to Raleigh/Durham (RDU) | 58.5% | 2.8% | 15.5% | 646 |
Routes with the most Frontier Airlines cancellations
| Route | On time | Cancelled | 60+ min late | Flights |
|---|---|---|---|---|
| New York (LGA) to Atlanta (ATL) | 49.6% | 7.7% | 23.3% | 949 |
| New York (LGA) to Orlando (MCO) | 51.9% | 7.4% | 19.2% | 339 |
| Atlanta (ATL) to New York (LGA) | 42.7% | 6.8% | 26.1% | 950 |
| Charlotte (CLT) to Philadelphia (PHL) | 62.0% | 5.9% | 15.3% | 574 |
| Raleigh/Durham (RDU) to Philadelphia (PHL) | 69.2% | 4.7% | 11.5% | 611 |
| Newark (EWR) to Atlanta (ATL) | 67.2% | 4.7% | 12.9% | 708 |
| Baltimore (BWI) to Atlanta (ATL) | 63.8% | 4.3% | 10.8% | 973 |
| Atlanta (ATL) to Newark (EWR) | 55.9% | 4.2% | 21.1% | 707 |
| Baltimore (BWI) to Orlando (MCO) | 67.7% | 4.2% | 12.9% | 641 |
| Orlando (MCO) to New York (LGA) | 65.4% | 4.1% | 13.0% | 338 |
Busiest Frontier Airlines routes
| Route | On time | Cancelled | 60+ min late | Flights |
|---|---|---|---|---|
| Denver (DEN) to Las Vegas (LAS) | 75.0% | 1.0% | 9.5% | 1,626 |
| Philadelphia (PHL) to Orlando (MCO) | 65.9% | 2.6% | 15.2% | 1,622 |
| Las Vegas (LAS) to Denver (DEN) | 75.6% | 1.2% | 11.0% | 1,620 |
| Orlando (MCO) to Philadelphia (PHL) | 67.6% | 2.2% | 15.0% | 1,619 |
| Denver (DEN) to Phoenix (PHX) | 76.3% | 0.8% | 7.9% | 1,499 |
| Phoenix (PHX) to Denver (DEN) | 78.0% | 0.7% | 8.8% | 1,494 |
| Orlando (MCO) to San Juan (SJU) | 75.5% | 1.3% | 8.9% | 1,350 |
| San Juan (SJU) to Orlando (MCO) | 79.5% | 1.3% | 8.2% | 1,348 |
| Atlanta (ATL) to Orlando (MCO) | 63.2% | 2.2% | 17.0% | 1,270 |
| Orlando (MCO) to Atlanta (ATL) | 65.5% | 2.2% | 11.9% | 1,266 |
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 Frontier Airlines (F9).
- 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.