Best Time to Fly ATL to IAD
Atlanta 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
ATL → IAD on-time performance by month
24
25
26
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
Monthly breakdown
| Month | On-time | Cancel rate | Flights |
|---|---|---|---|
| January | 1% | 0% | 1,014 |
| February | 1% | 0% | 959 |
| March | 1% | 0% | 1,112 |
| April | 1% | 0% | 1,191 |
| May | 1% | 0% | 1,330 |
| June | 1% | 0% | 1,364 |
| July | 1% | 0% | 1,327 |
| August | 1% | 0% | 980 |
| September | 1% | 0% | 929 |
| October | 1% | 0% | 969 |
| November | 1% | 0% | 891 |
| December | 1% | 0% | 898 |
Frequently asked
What is the best month to fly from ATL to IAD?
January has the highest on-time rate at 1% for flights from Atlanta to Washington.
What is the worst month to fly ATL to IAD?
January has the lowest on-time rate at 1%, often due to winter weather.
How often are ATL to IAD flights delayed?
On average, 1% of flights from ATL to IAD arrive on time. That means about 99% experience some form of delay.
Source: Bureau of Transportation Statistics.