How reliable is Dallas Fort Worth International Airport?
Flights from DFW departed within 15 minutes of schedule in 74% of 1,830,985 flights in official BTS history — and weather is calmest in Jul. Here’s the full picture before you book.
Reliability score
on-time, cancellations & delays
Weather favorability
year-round climate
Origin-airport operations
What the departure punctuality at DFW looks like
On-time departures
across 1,830,985 flights
Source: BTS Airport Operations · data through 2026-08-08. Role-specific BTS departure history; advisory context, not a guarantee for any flight.
Weather by month
When the weather works for you at Dallas-Fort Worth
A calm-weather score (0–100) for each month from decades of airport observations — how often conditions disrupt flying, not temperature. Higher is calmer.
Calmest month
Calmest flying weather of the year · 98/100 favorability
Roughest month
Most disruptive — low visibility & fog, high winds · 86/100 favorability
Connecting through DFW
How much layover you really need
Based on 401 sellable domestic itineraries seen through Google Flights. Median observed layover: 91 min.
International transfers add immigration and bag recheck — give yourself this buffer at DFW or more.
Observed windows come from normalized SearchAPI / Google Flights itineraries. They are not official airport MCTs. We score every connecting itinerary against conservative connection floors.
The read on DFW
What the numbers say about flying through Dallas Fort Worth International Airport
Across official performance history, flights from Dallas-Fort Worth left within 15 minutes of schedule about 74% of the time over 1,830,985 flights. That's a middling record — neither a strength nor a red flag on its own. Pair it with an elevated cancellation rate of 2.6% — worth weighing alongside the on-time figure. When a departure does run late, the typical delay is around 18 minutes.
On weather, Dallas-Fort Worth is an unusually calm-weather airport year-round. July is the calmest stretch for flying, scoring 98 out of 100 for favorable conditions, while January is the most disruptive at 86, driven mainly by low visibility & fog and high winds. The year is relatively steady, so no single month stands out as one to avoid on weather alone.
If you're connecting through DFW, give yourself room. Real itineraries sold through DFW bottom out around 55 minutes for a domestic connection, and international transfer wants roughly 95 minutes once immigration and a bag recheck are in the mix. Those are floors, not comfortable buffers — one inbound delay can erase them, so add margin when the connection matters.
None of this guarantees your specific flight — it’s the backdrop. To turn it into a booking, score real flights to Dallas-Fort Worth, read how we weigh it all in how the PlaneSane Score works, and brush up with how to pick a reliable flight and avoiding weather delays.
Common questions about DFW
- How reliable is Dallas Fort Worth International Airport (DFW)?
- Flights from Dallas-Fort Worth left within 15 minutes of schedule roughly 74% of the time across 1,830,985 flights of official history — a middling record — neither a strength nor a red flag on its own. The cancellation rate runs about 2.6%. It's advisory context, not a guarantee for any single flight.
- What is the best month to fly from DFW for good weather?
- July has the calmest flying weather at Dallas Fort Worth International Airport. January is the most disruptive, mainly from low visibility & fog and high winds.
- How much layover time do you need at DFW?
- Allow at least about 55 minutes for a domestic connection and about 95 minutes for an international one as a floor. These are minimums, not comfortable buffers — a single inbound delay can wipe them out, so add margin when you can.
Reliability guides
Planning a trip through Dallas-Fort Worth?
Score real flights to and from DFW on reliability, weather, and connection safety — not just price.