DFW to IAD flight delays & on-time performance
Nonstop flights from Dallas Fort Worth International Airport to Washington Dulles International Airport · 1,172 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at DFW or IAD right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Dallas/Fort Worth (DFW) to Washington (IAD) arrived on time 78% of the time in Aug 2025 – Jul 2026, in line with the national average.
- 2% were cancelled, and 9% arrived an hour or more late.
- United Airlines was the most punctual airline here (84% on time); American Airlines was the least (71%).
- Departures scheduled around 7am did best (89% on time); around 6pm did worst (57%).
- Tuesday was the most reliable day to fly (83% on time) and Sunday the least (70%).
- The largest source of delay minutes was late-arriving aircraft (45%).
Which airline is most on time from DFW to IAD?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| United Airlines | 84% | 1.0% | 14 min | 6.3% | 924 |
| Frontier Airlines | 84% | 3.0% | 13 min | 6.7% | 169 |
| American Airlines | 71% | 2.9% | 23 min | 12.1% | 850 |
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 56% | 0.0% | 47 min | 33.3% | 9 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am94%37 flights
- 6am93%29 flights
- 7am89%442 flights
- 8am76%25 flights
- 11am88%43 flights
- 12pm80%472 flights
- 1pm64%101 flights
- 2pm66%91 flights
- 3pm57%22 flights
- 5pm78%369 flights
- 6pm57%192 flights
- 7pm76%112 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday78%2.0% cancelled
- Tuesday83%2.8% cancelled
- Wednesday81%0.8% cancelled
- Thursday78%1.0% cancelled
- Friday81%1.6% cancelled
- Saturday76%2.7% cancelled
- Sunday70%3.1% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft45%
- Airline (crew, maintenance, cleaning, fueling)32%
- Air traffic control & airport congestion16%
- Extreme weather7%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather77%
- Airline (crew, maintenance, cleaning, fueling)21%
- Air traffic control & airport congestion3%
- Security0%
DFW to IAD: common questions
- How often are DFW to IAD flights on time?
- 78% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Dallas/Fort Worth to Washington cancelled?
- 2.0% of scheduled flights were cancelled (39 of 1,952).
- How long are typical delays?
- Across all flights the average arrival delay was 18 min (early arrivals count as zero). Flights that were late arrived 77 min behind schedule on average, and 9.0% of flights were an hour or more late.
- How long is taxi time at DFW?
- Flights on this route spent 19 min taxiing from the gate to takeoff on average.
Related routes
Return trip: IAD to DFW — 77% on time
More flights from Dallas/Fort Worth
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: DFW → IAD, nonstop flights by US airlines that report to the DOT. How we calculate this.