Route · DCA → SLC · 2020–2025 BTS data
Washington to Salt Lake City
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), DCA to SLC (Washington to Salt Lake City) ranks #3940 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 80.9%
- On-time
- +1.9 pts
- vs US avg
- 103 min
- Delay when late
- 1,807
- Flights
- #3940 of 4927
- Corpus placement
Cancelled
0.8%
Best Month
N/A
Worst Month
N/A
Distance
1,851 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 31 | 6 | 0 | 0 | DL |
| Nov 2025 | 30 | 3 | 0 | 0 | DL |
| Oct 2025 | 31 | 7 | 0 | 0 | DL |
| Sep 2025 | 30 | 7 | 0 | 0 | DL |
| Aug 2025 | 31 | 5 | 0 | 0 | DL |
| Jul 2025 | 31 | 13 | 0 | 0 | DL |
| Jun 2025 | 30 | 11 | 1 | 0 | DL |
| May 2025 | 31 | 7 | 1 | 0 | DL |
| Apr 2025 | 30 | 4 | 0 | 0 | DL |
| Mar 2025 | 31 | 10 | 1 | 0 | DL |
| Jan 2025 | 31 | 3 | 0 | 0 | DL |
| Dec 2024 | 31 | 7 | 0 | 1 | DL |
| Nov 2024 | 30 | 3 | 0 | 0 | DL |
| Oct 2024 | 31 | 1 | 0 | 0 | DL |
| Sep 2024 | 30 | 2 | 0 | 0 | DL |
| Aug 2024 | 31 | 4 | 0 | 1 | DL |
| Jul 2024 | 31 | 7 | 3 | 0 | DL |
| Jun 2024 | 30 | 5 | 0 | 0 | DL |
| May 2024 | 31 | 10 | 0 | 0 | DL |
| Apr 2024 | 30 | 7 | 0 | 0 | DL |
| Mar 2024 | 31 | 4 | 0 | 0 | DL |
| Jan 2024 | 31 | 9 | 0 | 0 | DL |
| Dec 2023 | 31 | 2 | 0 | 0 | DL |
| Nov 2023 | 30 | 0 | 0 | 0 | DL |
DCA–SLC seasonal on-time pattern
Best: November (93.3%) · weakest: December (72.3%)
Strongest calendar month
November
93.3% on-time · ~30 flights/mo
Busiest calendar month
January
~31 flights/mo avg
Weakest calendar month
December
72.3% on-time · ~31 flights/mo
Cancellation Rate
0.8%
6 of 735 flights
Diversion Rate
0.3%
2 of 735 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
DCA - Washington
Full on-time, delay-cause, and seasonal performance for Washington, DC.
DCA on-time profileSLC - Salt Lake City
Full on-time, delay-cause, and seasonal performance for Salt Lake City, UT.
SLC on-time profileCompare the two airports
See DCA and SLC side by side on delays, cancellations, and reliability.
Compare DCA vs SLCOrigin-hub reliability standing
Mid-pack among DCA departures
From DCA, this corridor sits with 77 other 75–85% on-time routes out of 91 tracked departures, not the hub's reliability leaders (4 at ≥85%) and not the softest ( 10 below 75%). Destination: Salt Lake City · fleet on-time rank #2773 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to DCA–SLC.
Routes with a similar on-time rate
What the Data Says About DCA to SLC
1,807 tracked flights put the DCA to SLC pairing (Washington to Salt Lake City) at a 80.9% on-time rate, squarely in line with the wider network. Delays that do occur run 103.2 minutes on average. Across the 1,851-mile route and its 1 carrier, the trailing 24 months show 0.8% cancelled and 0.3% diverted (735 flights sampled).
Monthly performance data for this route did not show a clear best/worst split in the sample window; review the monthly table above for period-by-period detail.
On the multi-year calendar, DCA–SLC peaks in November at 93.3% on-time while January carries the heaviest traffic (~31 flights per month) ; the softest month is December at 72.3%, a 21.0-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does DCA to SLC rank among US routes by traffic? ▼
How often are flights delayed from DCA to SLC? ▼
What is the cancellation rate for DCA to SLC? ▼
How far is the flight from DCA to SLC? ▼
Airports on this route
Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Using DCA–SLC data
DCA–SLC is mid-pack at 80.9% on-time; month and carrier mix move more than the corridor headline.
- Compare DCA and SLC airport profiles: delay causes and top routes differ even on the same corridor. DCA airport
- If your dates flex, November (93.3% on-time) beats December (72.3%) on this corridor. Seasonal chart
- 4 other routes post a similar 80.9% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.