Best Time to Fly STL to DCA
St. Louis to Washington — month-by-month delay data from the Bureau of Transportation Statistics.
Best month
January
1% on time
Worst month
January
1% on time
STL → DCA on-time performance by month
24
25
26
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
Monthly breakdown
| Month | On-time | Cancel rate | Flights |
|---|---|---|---|
| January | 1% | 0.1% | 779 |
| February | 1% | 0% | 705 |
| March | 1% | 0% | 772 |
| April | 1% | 0% | 769 |
| May | 1% | 0% | 804 |
| June | 1% | 0% | 771 |
| July | 1% | 0% | 792 |
| August | 1% | 0% | 593 |
| September | 1% | 0% | 597 |
| October | 1% | 0% | 627 |
| November | 1% | 0% | 591 |
| December | 1% | 0% | 578 |
Frequently asked
What is the best month to fly from STL to DCA?
January has the highest on-time rate at 1% for flights from St. Louis to Washington.
What is the worst month to fly STL to DCA?
January has the lowest on-time rate at 1%, often due to winter weather.
How often are STL to DCA flights delayed?
On average, 1% of flights from STL to DCA arrive on time. That means about 99% experience some form of delay.
Source: Bureau of Transportation Statistics.