Route reliability record
MSP→DCA
Minneapolis to Washington
- Flights
- 2,574
- Period
- July 2025 to June 2026
- Distance
- 931 mi
- Carriers
- 5
This route carries a cancellation problem, not just a delay problem: 3.2% of scheduled flights never operate, against 1.8% nationally. Of the ones that do fly, close to three flights in four arrive on time, worth a C− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 2,574 flights, of which Delta Air Lines flew 1,695 at 75.6% on time.
The US average over the same twelve months is 77.6%, so there is little to separate this route from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
74.3%
Arrivals under 15 minutes late, of 2,472 completed flights
Avg delay
81 min
Across delayed arrivals only, not all flights
Cancelled
3.22%
National rate is 1.81%
Best carrier
Delta
75.6% on time across 1,695 flights
These figures cover 2,574 flights between July 2025 and June 2026. Beyond the headline rate, 9.3% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Carrier by carrier
Which airline is most reliable on MSP to DCA
The two carriers here are closely matched: 3 points separate the best from the worst. At that spread, schedule and price are better tie-breakers than reliability. Sample sizes are shown so you can see which rows are worth weighing.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Delta Air Lines | 1,695 | 75.6% | 60 min | 2.12% | B |
| Republic Airwaysthin sample | 215 | 74.6% | 72 min | 5.58% | C− |
| PSA Airlines | 483 | 72.7% | 160 min | 5.59% | C− |
| Envoy Airthin sample | 140 | 66.7% | 66 min | 4.29% | C− |
| American Airlinesthin sample | 41 | 61.5% | 73 min | 4.88% | D− |
PSA Airlines cancels 5.6% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.
Departure window
The best time of day to leave
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 23 points, against 3 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am596 flights82.5%
- 8am–11am373 flights84.7%
- 11am–2pm300 flights75.4%
- 2pm–5pm368 flights76.1%
- 5pm–8pm605 flights61.4%
- 8pm–5am332 flights68.3%
Scale runs 55% to 90%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 61.4% on time, against 84.7% for the 8am–11am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 5pm–8pm window is the busiest, with 605 flights scheduled in it.
Across the year
When delays peak on this route
This route's year swings by 22 points from best month to worst, which is wide. An annual average tells you very little about the week you are actually flying, so read the strip rather than the headline if your dates are fixed.
July is the worst month at 62.1% on time, 22 points below May, the best at 84.0%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. May was the busiest month here, with 224 flights.
Across the week, Tuesday is the strongest day at 80.6% on time and Thursday the weakest at 66.8%. 14 points is a smaller lever than departure hour, but it is free.
Delay causes
Why this route gets delayed
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 52,000 reported delay minutes.
- 33%Carrier
- 29%Late-arriving aircraft
- 28%National Airspace System
- 10%Extreme weather
The practical consequence: the 8am–11am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 84.7% on time here. The split is drawn from 51,632 reported delay minutes.
No single cause dominates. carrier at 33%, late-arriving aircraft at 29% and national airspace system at 28% split the 52,000 reported delay minutes between them. An even spread like this usually means the operation is running close to its designed capacity with no one obvious weak point, and it is the hardest pattern for a traveller to route around.
Cancellations run at 3.22%, against 1.81% nationally. That is about one flight in 30 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and stage length
What a delay here actually costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.3% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
The 931 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The return leg is a different operation and performs like one: it runs 77.3% on time across 2,574 flights, 3 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 3 points of difference.
The sample behind these figures is 2,574 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
What to do with this
Booking this route
Put together: the delay figures matter less here than the 3.22% cancellation rate. A late arrival costs you a little over an hour; a cancelled flight costs you the day. Book the 8am–11am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 2,472 completed flights over 12 months sit behind that.
Common questions
MSP to DCA questions
How often is MSP to DCA delayed?
About one flight in four arrive at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 25.7% of the 2,574 flights in this analysis, against 22.4% nationally. Delayed flights are late by a little over an hour on average.
Which airline is most reliable on MSP to DCA?
Delta Air Lines leads at 75.6% on time across 1,695 flights. PSA Airlines is at the other end on 72.7%, a gap of 3 points. Sample size matters as much as the percentage: a rate built from a few hundred flights moves around far more than one built from ten thousand.
What time of day has the fewest delays on MSP to DCA?
The 8am–11am departure window is the strongest at 84.7% on time. The 5pm–8pm window is the weakest at 61.4%, 23 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.
How bad are July delays on MSP to DCA?
July is the weakest month at 62.1% on time, compared with 84.0% in May. Across the year that is 22 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.
Related
Where to go next
- DCA to MSP — the return legseparate record
- Minneapolis-St Paul International (MSP) delay statistics
- Ronald Reagan Washington National (DCA) delay statistics
- Delta Air Lines on-time record75.6%
- Republic Airways on-time record74.6%
- PSA Airlines on-time record72.7%
- What a cancellation rate actually tells you (and what it hides)
- The best time of day to fly, according to 7.04 million flight records
Direction matters. MSP to DCA and DCA to MSP are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Updated monthly. How this data is collected.