IAD to DFW flight delays & on-time performance
Nonstop flights from Washington Dulles International Airport to Dallas Fort Worth International Airport · 1,172 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at IAD or DFW right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Washington (IAD) to Dallas/Fort Worth (DFW) arrived on time 77% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 1.9% were cancelled, and 9% arrived an hour or more late.
- United Airlines was the most punctual airline here (80% on time); American Airlines was the least (75%).
- Departures scheduled around 8am did best (87% on time); around 7pm did worst (52%).
- Tuesday was the most reliable day to fly (80% on time) and Saturday the least (73%).
- The largest source of delay minutes was late-arriving aircraft (39%).
Which airline is most on time from IAD to DFW?
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 | 80% | 0.7% | 17 min | 8.8% | 923 |
| Frontier Airlines | 77% | 3.6% | 43 min | 12.3% | 169 |
| American Airlines | 75% | 3.1% | 27 min | 9.7% | 850 |
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 67% | 0.0% | 25 min | 11.1% | 9 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am84%319 flights
- 7am80%44 flights
- 8am87%234 flights
- 10am91%46 flights
- 11am85%133 flights
- 12pm83%387 flights
- 1pm80%20 flights
- 5pm70%507 flights
- 6pm59%121 flights
- 7pm52%87 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday77%1.6% cancelled
- Tuesday80%2.0% cancelled
- Wednesday79%0.4% cancelled
- Thursday79%1.3% cancelled
- Friday80%1.9% cancelled
- Saturday73%1.6% cancelled
- Sunday73%4.4% 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 aircraft39%
- Airline (crew, maintenance, cleaning, fueling)39%
- Air traffic control & airport congestion16%
- Extreme weather6%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather76%
- Airline (crew, maintenance, cleaning, fueling)21%
- Air traffic control & airport congestion3%
- Security0%
IAD to DFW: common questions
- How often are IAD to DFW flights on time?
- 77% 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 Washington to Dallas/Fort Worth cancelled?
- 1.9% of scheduled flights were cancelled (38 of 1,951).
- How long are typical delays?
- Across all flights the average arrival delay was 24 min (early arrivals count as zero). Flights that were late arrived 102 min behind schedule on average, and 9.5% of flights were an hour or more late.
- How long is taxi time at IAD?
- Flights on this route spent 20 min taxiing from the gate to takeoff on average.
Related routes
Return trip: DFW to IAD — 78% on time
More flights from Washington
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: IAD → DFW, nonstop flights by US airlines that report to the DOT. How we calculate this.