Route
SFO → IAD
San Francisco International Airport Washington Dulles International Airport
Alerts at SFO and IAD
How punctual is this route?
- On-time arrivals
- 83.0%
- Less than 15 minutes late
- Cancelled
- 0.6%
- Of scheduled flights
- Average delay when late
- 63 min
- Flights arriving 15+ minutes late
- Flights tracked
- 2,690
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 42%
- Airline (crew, maintenance, cleaning) 40%
- Air traffic control & airport 18%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 81.1% | 206 |
| October 2025 | 89.0% | 247 |
| November 2025 | 86.0% | 229 |
| December 2025 | 86.5% | 245 |
| January 2026 | 89.1% | 209 |
| February 2026 | 92.1% | 189 |
| March 2026 | 86.7% | 209 |
| April 2026 | 83.9% | 231 |
| May 2026 | 83.2% | 268 |
| June 2026 | 72.6% | 234 |
| July 2026 | 76.9% | 209 |
| August 2026 | 68.9% | 214 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| United Airlines | 2,690 | 83.0% | 0.6% | 63 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA1849
16% late · 344 flights
-
UA1453
14% late · 298 flights
-
UA1870
13% late · 241 flights
-
UA336
25% late · 238 flights
-
UA1791
31% late · 121 flights
-
UA2111
12% late · 120 flights
-
UA2837
30% late · 103 flights
-
UA755
31% late · 98 flights
-
UA357
30% late · 82 flights
-
UA1083
21% late · 73 flights
-
UA1140
1% late · 72 flights
-
UA1986
17% late · 59 flights
-
UA2351
13% late · 55 flights
-
UA2409
13% late · 55 flights
-
UA2027
25% late · 53 flights
-
UA450
12% late · 53 flights
-
UA705
0% late · 39 flights
-
UA1354
30% late · 37 flights
-
UA233
0% late · 37 flights
-
UA2274
34% late · 35 flights
-
UA2117
3% late · 32 flights
-
UA1288
6% late · 31 flights
-
UA1997
17% late · 31 flights
-
UA2241
0% late · 31 flights
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