Route profile
DAL→MEM
Flight reliability, delays and best times to fly from Dallas to Memphis, 423 miles.
Right now
Aviation weather is not currently a factor.
Aviation weather is not currently a factor.
Route reliability
July 2023 – July 2026
Better than 45% of comparable major US routes (4,598 compared)
Calculated from 1,459 flights. How this is calculated · What counts as on time
DAL → MEM arrives on time 74.2% of the time; the return trip, MEM → DAL, arrives on time 78.3% of the time, a 4.2-point gap between the two directions of the same city pair.
DAL → MEM spends 17.7 minutes on the ground on a 423-mile trip: 13.6 minutes from pushback to wheels-up at DAL and 4.1 minutes from touchdown to gate at MEM.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
What stands out
Which day you fly matters unusually much here, a wider weekday spread than 94% of 4,467 comparable routes.
81.9% on time on a typical Tuesday, against 67.0% on a Sunday.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Ranked against every other route with the same kind of figure and at least 4,467 in the comparison.
What sets this route apart
Where DAL to MEM differs most from similar routes by hour, weekday, month and airline, July 2023 – July 2026.
Sunday is the day DAL to MEM slips furthest against routes of similar length, 67.0% on time where they average 74.9%, 7.9 points lower. Against all other routes the gap is 7.8 points.
In May, DAL to MEM runs 9 points below routes of similar length, 66.9% on time to 75.9%. Against all other routes the gap is 8.4 points.
Southwest Airlines’ flights on DAL to MEM arrive on time 74.2% of the time, 4.4 points below the 78.6% it manages on its routes of similar length. Against all other routes the gap is 3.2 points.
DAL to MEM against comparable routes
July 2023 – July 2026| Measure | This route | Compared with | Them | Gap | Flights behind it |
|---|---|---|---|---|---|
| Weekday: Sunday | 67.0% | routes of similar length | 74.9% | −7.9 pts | 288 here, 234,275 there |
| Month: May | 66.9% | routes of similar length | 75.9% | −9.0 pts | 121 here, 135,116 there |
| Airline: Southwest Airlines | 74.2% | routes of similar length | 78.6% | −4.4 pts | 1,447 here, 545,125 there |
Each comparison pools the flights of other routes, with this route’s own left out. Similar length means within 15% of this route’s 423 miles, with at least 5 such routes. A bucket is set against the most comparable group that has enough flights: similar length, then the same origin (at least 3 routes), then all other routes. Hours, weekdays and months appear only where both sides have 120 completed flights, and airlines where both have 600. The gap must be at least 2 points and 2 standard errors, and only the largest gap each way is kept per measure. These are differences in the flights counted, not causes.
When it goes wrong
July 2023 – July 2026
43 min late
against a median of 1 min early
Percentiles over 1,459 operations; cancelled and diverted flights are counted separately.
Will your connection be tight enough?
Layovers at MEM after arriving from DAL.
| Connection time | Chance of missing | Reads as |
|---|---|---|
| 30 min | 46% | Likely to miss |
| 45 min | 25% | High risk |
| 60 min | 14% | Some risk |
| 90 min | 7.3% | Some risk |
| 120 min | 4.1% | Low risk |
This is one leg of a connection. Gate changes and the next flight's own schedule matter too. And a connection can fail before delay is even the question — this route cancels 0.75% of the time and diverts 0.07% of the time, which a late arrival never shows up in.
Chance of missing is the share of 1,447 arrivals on this route that landed later than the connection time less 30 minutes to reach the next gate.
The worst tenth of arrivals on this route land at least 43 minutes late (90th-percentile gate arrival delay), over 1,459 operations.
Any other layover length: connection checker.
Best time to fly
DAL → MEM flights departing 9 AM–12 PM arrived on time 86.6% of the time, against 56.0% for 6–9 PM departures, a gap of 30.6 percentage points.
By departure window
By departure hour
- 12 AM to 10 AM: too few flights to score
- 11 AM: 85.4% on time from 158 flights
- 12 PM: too few flights to score
- 1 PM: 73.3% on time from 202 flights
- 2 PM: 76.2% on time from 203 flights
- 3 PM: 71.1% on time from 168 flights
- 4 PM to 11 PM: too few flights to score
Departure windows with fewer than 120 flights are not scored.
Why DAL → MEM runs late
July 2023 – July 2026
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding and fueling, all within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
screening or terminal security incidents
Share of the delay minutes US DOT attributed to each cause for DAL → MEM. Only delays of 15 minutes or more are attributed. What the five causes mean
Late-arriving aircraft is the largest cause on DAL → MEM, at 56.8%: flights here mostly leave late because the plane came in late, and the day shows it: 9 AM–12 PM departures arrived on time 86.6% of the time and 6–9 PM departures 56.0%.
Airlines on this route
Carriers with at least 200 flights, by the airline that operated each one.
| Carrier | Flights | On time | Cancelled | Median delay | Severe |
|---|---|---|---|---|---|
| Southwest Airlines | 1,459 | 74.2% | 0.75% | -1 min | 7.3% |
Weekly and seasonal patterns
By day of week
Tuesday is historically the most reliable day and Sunday the least, a gap of 14.9 percentage points.
Reliability over time
July 2023 – July 2026
Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 74.0% against 72.8% in the 12 months before — broadly unchanged.
Data and methodology
Calculated by FlyerIntel from 1,459 DAL → MEM flight records from the US DOT Bureau of Transportation Statistics, covering July 2023 – July 2026. Late means 15 or more minutes past scheduled arrival; cancelled and diverted flights are left out of on-time rates.
Full methodology · Data sources · Report a problem
Related research: How Long a Layover Needs to Be · Two Airlines on One Route · Best Time of Day to Fly From Major US Airports
Analysis last recomputed