Best Time to Fly SEA to DEN
Seattle to Denver — month-by-month delay data from the Bureau of Transportation Statistics.
Best month
January
1% on time
Worst month
January
1% on time
SEA → DEN on-time performance by month
24
25
26
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
Monthly breakdown
| Month | On-time | Cancel rate | Flights |
|---|---|---|---|
| January | 1% | 0% | 1,831 |
| February | 1% | 0% | 1,688 |
| March | 1% | 0% | 1,917 |
| April | 1% | 0% | 1,955 |
| May | 1% | 0% | 2,287 |
| June | 1% | 0% | 2,593 |
| July | 1% | 0% | 2,723 |
| August | 1% | 0% | 1,969 |
| September | 1% | 0% | 1,782 |
| October | 1% | 0% | 1,706 |
| November | 1% | 0% | 1,471 |
| December | 1% | 0% | 1,470 |
Frequently asked
What is the best month to fly from SEA to DEN?
January has the highest on-time rate at 1% for flights from Seattle to Denver.
What is the worst month to fly SEA to DEN?
January has the lowest on-time rate at 1%, often due to winter weather.
How often are SEA to DEN flights delayed?
On average, 1% of flights from SEA to DEN arrive on time. That means about 99% experience some form of delay.
Source: Bureau of Transportation Statistics.