Flight profile · Southwest Airlines

WN34

Houston (HOU) to Dallas (DAL) · scheduled 2:30 PM – 3:40 PM

This page describes how WN34 has historically performed, which is a different and more useful question when you are deciding what to book. For today’s status, check with Southwest Airlines.

How WN34 performs

722 operations, July 2023 – August 2026.

On-time arrivals
77.7%
550 of 708 completed
Cancellation rate
1.66%
12 cancelled
Median arrival delay
-4 min
Average 9.4 min
Severe delays
8.5%
Arrived 60+ minutes late
Delay when late
67 min
Average, when 15+ min late
Departure punctuality
74.4%
Left the gate on time

Between its first and last recorded date on HOU → DAL, WN34 averaged about 4 operations a week (722 in 1,154 days, cancelled ones included).

WN34 arrived on time 77.7% of the time, against 81.4% for all HOU → DAL flights, so this departure is 3.7 percentage points worse than the route as a whole. Against Southwest Airlines’ own flights on this route it is 3.7 points worse.

Source: US DOT Bureau of Transportation Statistics · 722 operations, July 2023 – August 2026 · If WN34 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.

Where WN34 is right now

A live reading, only if you ask for it. It is not part of the reliability record above.

Ask for the position of WN34 right now, if receivers on the ground are hearing it. Nothing is requested until you press the button.

Against the rest of the route

Against the rest of the route
Flight or routeOn timeCancelledMedian delaySevereFlights
WN3477.7%1.66%-4 min8.5%722
Southwest Airlines on HOU → DAL81.4%2.02%-8 min6.1%13,009
All HOU → DAL flights81.4%2.02%-8 min6.1%13,009

WN34 cancelled 12 of 722 operations (1.66%), close to the 2.02% for HOU → DAL.

8.5% of WN34’s arrivals were an hour or more late, against 6.1% across HOU → DAL, so the long delays are more common on this number than on the route.

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – August 2026

Why WN34 runs late

Where US DOT attributed the delay minutes on this flight.

Share of the delay minutes US DOT attributed to each cause for WN34 on HOU → DAL. Only delays of 15 minutes or more are attributed. What the five causes mean

Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – August 2026

Does a late aircraft delay this flight?

How often the plane that flies WN34 comes in late, and what that does to the departure.

Inbound aircraft late
13%
87 of 676 departures came in 15+ minutes late
Scheduled time on the ground
45 minutes
Median at HOU between the inbound and this departure

The aircraft flying WN34 came in 15 or more minutes late on 13% of the departures where its previous flight is known. There are not enough departures in both groups to say how the flight left after a late one and after an on-time one.

Matched by tail number to the aircraft’s previous flight into HOU: 676 of 710 departures. Unknown, cancelled or diverted inbounds and gaps over 12 hours are left out.

Against the network at the same turn length

WN34 against all flights with a scheduled turn of 45 to 59 minutes
Share of departuresInbound landed 15+ late
WN3413%
Network, same turn18%

45 scheduled minutes is enough to clean and board when the aircraft is on time, with little to spare when it is not.

The network row is every flight with a scheduled turn of 45 to 59 minutes. How often WN34’s aircraft landed 15 or more minutes late is lower than the network’s. There are not enough departures in both groups to compare how it left.

Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – August 2026

From pushback to gate

When it leaves HOU late, does that still matter by the time it reaches DAL?

Leaves the gate
15.2 minutes late
Average over 710 pushbacks
Taxi out at HOU
13.2 min
13.5 min for the airport in this hour
Taxi in at DAL
4.9 min
5.5 min for a typical DAL arrival
Reaches the gate at DAL
9.4 minutes late
Average over 708 arrivals

WN34 pushes back an average of 15.2 minutes late and reaches the gate at DAL an average of 9.4 minutes late. The 5.7 minutes between those two figures are slack the published schedule already carries, so a late pushback is partly, not fully, made up before the gate. Its 13.2 minutes on the taxiways at HOU is about what any departure from the airport in that hour spends.

On arrival at DAL, WN34 spends 4.9 min taxiing from touchdown to the gate — ground time a connecting passenger sits through before they can even leave the aircraft, on top of however late the flight itself ran. That is about what any arrival at DAL spends on the ground before reaching the gate.

Taxi-out is gate to wheels up and sits inside the scheduled block; the hourly comparison is 11,510 HOU departures. Taxi-in is landing to gate, set against 229,763 arrivals at DAL. More on taxi time.

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – August 2026

The hour it leaves HOU

WN34 has one departure time, 2:30 PM, so this is what that hour at HOU is worth.

WN3477.7%
All HOU departures, 2 PM–3 PM71.1%
All HOU departures, whole day78.7%

On-time arrival rate. 11,510 departures from HOU are scheduled in the 2 PM–3 PM hour over the period, against 176,550 across the whole day.

WN34 is scheduled out of HOU at 2:30 PM, in the 2 PM–3 PM bank. Departures from HOU in that hour arrive on time 71.1% of the time against 78.7% across the airport’s whole day — the slot alone is worth 7.7 points worse before anything about this particular flight is considered.

Both airport figures cover every destination from HOU, so they describe the slot, not this journey; the route comparison is above. Why the hour matters.

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – August 2026 · Hours below 120 departures are not scored.

Other routes WN34 has flown

Carriers reassign flight numbers. WN34 also served these 40 other city pairs in the period.

Other routes WN34 has flown
RouteOperatedFlightsOn time
CRP→HOU Corpus Christi to HoustonFebruary 13, 2025 – August 29, 202671—
DAL→BWI Dallas to BaltimoreAugust 8–29, 20264—
SNA→SMF Santa Ana to SacramentoJuly 7–29, 20268—
DAL→TUS Dallas to TucsonFebruary 12, 2026 – March 1, 20268—
TUS→LAX Tucson to Los AngelesFebruary 12, 2026 – March 1, 20268—
DAL→LIT Dallas to Little RockNovember 2, 2025 – January 5, 202617—
LIT→STL Little Rock to St. LouisNovember 2, 2025 – January 5, 202617—
DAL→PHX Dallas to PhoenixAugust 10, 2025 – November 1, 202512—
DAL→CLT Dallas to CharlotteApril 11, 2024 – October 30, 202561—
PHX→BUR Phoenix to BurbankAugust 10, 2025 – September 28, 20257—
DAL→LBB Dallas to LubbockApril 14, 2024 – August 31, 20258—
DAL→TPA Dallas to TampaJune 5, 2025 – August 4, 202526—
DAL→ATL Dallas to AtlantaApril 10, 2025 – June 2, 202524—
DAL→SAN Dallas to San DiegoAugust 10, 2024 – June 1, 202515—
SAN→SJC San Diego to San JoseApril 13, 2025 – June 1, 20257—
DAL→MDW Dallas to ChicagoMay 25, 20251—
DAL→SRQ Dallas to Sarasota/BradentonMarch 6, 2025 – April 7, 202515—
DAL→MCO Dallas to OrlandoMarch 8, 2025 – April 5, 20255—
DAL→SAV Dallas to SavannahMarch 11, 2025 – April 2, 20258—
DAL→STL Dallas to St. LouisNovember 26, 2024 – January 5, 202512—
DAL→TUL Dallas to TulsaNovember 3, 2024 – January 3, 202515—
TUL→STL Tulsa to St. LouisNovember 3, 2024 – January 3, 202515—
SAN→RNO San Diego to RenoAugust 10, 2024 – September 28, 20248—
BUR→PHX Burbank to PhoenixJune 6, 2024 – August 2, 202424—
PHX→HOU Phoenix to HoustonJune 6, 2024 – August 2, 202424—
DAL→MCI Dallas to Kansas CityMarch 7, 2024 – April 8, 202415—
MDW→MSY Chicago to New OrleansJanuary 9, 2024 – March 6, 202418—
MSY→HOU New Orleans to HoustonJanuary 9, 2024 – March 6, 202418—
COS→DEN Colorado Springs to DenverNovember 21, 2023 – January 2, 202411—
DAL→COS Dallas to Colorado SpringsNovember 21, 2023 – January 2, 202411—
LGB→HOU Long Beach to HoustonNovember 21, 2023 – January 2, 202411—
OAK→LGB Oakland to Long BeachNovember 21, 2023 – January 2, 202411—
OMA→HOU Omaha to HoustonOctober 5, 2023 – November 3, 202314—
ATL→JAX Atlanta to JacksonvilleSeptember 7, 2023 – October 2, 202312—
JAX→HOU Jacksonville to HoustonSeptember 7, 2023 – October 2, 202312—
MEM→ATL Memphis to AtlantaSeptember 7, 2023 – October 2, 202312—
LGA→MDW New York to ChicagoJuly 11, 2023 – August 14, 202325—
MDW→TPA Chicago to TampaJuly 11, 2023 – August 14, 202325—
TPA→HOU Tampa to HoustonJuly 11, 2023 – August 14, 202325—
MDW→HOU Chicago to HoustonJuly 4–10, 20235—

The figures above describe only HOU → DAL, the route WN34 flies now.

When it goes wrong

The average describes a usual day. This is the day that ruins a connection.

One arrival in ten is worse than

51 min late

against a median of 4 min early

Arrived an hour or more late8.5%
Typical delay when late67 min
Cancelled1.66%
Landed somewhere else0.28%

Percentiles over 722 operations; cancelled and diverted flights are counted separately.

Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – August 2026

Other flights on this route

Same airports, same journey, different odds of arriving on time.

Other flights on this route
FlightAirlineOn timeMedian arrivalOperations
WN4Southwest Airlines95.2%12 min early680
WN1636Southwest Airlines94.6%11 min early910
WN34 this flightSouthwest Airlines77.7%4 min early722
WN52Southwest Airlines73.5%5 min early740
WN54Southwest Airlines72.7%4 min early640

Among all 5 departures on this route with at least 600 operations, WN34 has the 3rd highest on-time rate, 17.5 points behind the best. Every departure here has at least 600 operations; the other rows are the most punctual on the route, not all of them.

Data and methodology

Calculated by FlyerIntel from 722 records of WN34 operating HOU → DAL, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule; cancelled and diverted flights are reported separately, not in the on-time rate.

Full methodology · Data sources · Report a problem

Related research: Most and Least Reliable Flight Numbers · The Delay You Inherit · Making Up Time in the Air

Analysis last recomputed