DCA to LAS flight delays & on-time performance
Nonstop flights from Ronald Reagan Washington National Airport to Harry Reid International Airport · 2,089 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at DCA or LAS right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Washington (DCA) to Las Vegas (LAS) arrived on time 70% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 1.2% were cancelled, and 10% arrived an hour or more late.
- American Airlines was the most punctual airline here (88% on time); Southwest Airlines was the least (52%).
- Departures scheduled around 7am did best (89% on time); around 4pm did worst (48%).
- Saturday was the most reliable day to fly (85% on time) and Thursday the least (64%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (37%).
Which airline is most on time from DCA to LAS?
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 |
|---|---|---|---|---|---|
| American Airlines | 88% | 1.4% | 8 min | 3.3% | 364 |
| Southwest Airlines | 52% | 1.1% | 29 min | 16.4% | 365 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am94%18 flights
- 7am89%239 flights
- 8am81%53 flights
- 9am88%93 flights
- 4pm48%310 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday65%1.0% cancelled
- Tuesday71%2.9% cancelled
- Wednesday71%1.9% cancelled
- Thursday64%0.0% cancelled
- Friday65%0.0% cancelled
- Saturday85%0.0% cancelled
- Sunday69%2.9% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)37%
- Late-arriving aircraft36%
- Air traffic control & airport congestion24%
- Extreme weather2%
- Security1%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather78%
- Airline (crew, maintenance, cleaning, fueling)11%
- Air traffic control & airport congestion11%
- Security0%
DCA to LAS: common questions
- How often are DCA to LAS flights on time?
- 70% 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 Las Vegas cancelled?
- 1.2% of scheduled flights were cancelled (9 of 729).
- 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 58 min behind schedule on average, and 9.9% of flights were an hour or more late.
- How long is taxi time at DCA?
- Flights on this route spent 21 min taxiing from the gate to takeoff on average.
Related routes
Return trip: LAS to DCA — 75% 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: DCA → LAS, nonstop flights by US airlines that report to the DOT. How we calculate this.