Route reliability record
BOI→DFW
Boise to Dallas-Fort Worth
- Flights
- 817
- Period
- September 2025 to August 2026
- Distance
- 1,272 mi
- Carriers
- 1
This route lands a B, 4 points better than the national rate of 77.3%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That rests on 817 BOI to DFW flights, with a median arrival 9 minutes early.
Best time to fly BOI to DFW: a 5am–8am departure, ideally on a Wednesday. Flights in that window arrived on time 90.3% of the time and Wednesday flights 87.4%, against 81.6% for the route overall.
Set against the rest of the country, this route's record is 4 points better than the US average of 77.3%. That gap is worth roughly 43 fewer late arrivals for every thousand flights.
Key figures
On time
81.6%
Arrivals under 15 minutes late, of 787 completed flights
Avg delay
98 min
Across delayed arrivals only, not all flights
Cancelled
2.82%
National rate is 1.89%
Best carrier
American
81.6% on time across 817 flights
These figures cover 817 flights between September 2025 and August 2026. The median arrival is 9 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Carrier by carrier
Which airline is most reliable on BOI to DFW
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| American Airlines | 817 | 81.6% | 98 min | 2.82% | B |
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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 18 points, against half a point between the best and worst carrier.
- 5am–8am365 flights90.3%
- 8am–11am—
- 11am–2pm305 flights75.7%
- 2pm–5pm147 flights71.9%
- 5pm–8pm—
- 8pm–5am—
Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 90.3% of the time, against 71.9% for the afternoon window. That is 18 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5am–8am window is the busiest, with 365 flights scheduled in it.
Explore
Filter BOI to DFW by airline, time, month and day
Pick a breakdown and a carrier. The dashed mark on each row is the same slice for every US flight.
On BOI to DFW, the best departure window is 5am–8am at 90.3% on time and the worst is 2pm–5pm at 71.9%, a wide gap of 18.4 points. All US flights leaving 5am–8am ran 89.3%.
- 5–8am90.3%
- 8–11am—
- 11am–2pm75.7%
- 2–5pm71.9%
- 5–8pm—
- 8pm–5am—
best all US flightsScale 60% to 95%. Cells under 30 flights show a dash.
Across the year
When delays peak on this route
This route's year swings by 19 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.
Delays peak in May, when the on-time rate falls to 70.6%. February is the strongest month at 89.1%. Moving a flexible trip across that boundary buys 19 points. July was the busiest month here, with 91 flights.
Across the week, Wednesday is the strongest day at 87.4% on time and Saturday the weakest at 75.5%, a spread of 12 points.
Delay causes
Why this route gets delayed
Late-arriving aircraft accounts for 45% of the 14,000 delay minutes carriers reported here, and the remaining four split what is left.
- 45%Late-arriving aircraft
- 37%Carrier
- 10%Extreme weather
- 8%National Airspace System
45% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 14,000 reported delay minutes here, that single category outweighs weather by 5 to one. The split is drawn from 14,174 reported delay minutes.
The largest share of delay minutes, 37%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 5,293 of the 14,000 delay minutes reported here.
Cancellations run at 2.82%, against 1.89% nationally. That is roughly one flight in 40 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
6.9% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last an hour and a half, which a normal layover absorbs.
The 1,272 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.
The return leg is a different operation and performs like one: it runs 63.3% on time across 817 flights, 18 points below 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 18 points of difference.
One caution: this is a thin sample. 817 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
Work out the risk of missing a connection in DFW after this flight
What to do with this
Booking this route
Put together: the delay figures matter less here than the 2.82% cancellation rate. A late arrival costs you an hour and a half; a cancelled flight costs you the day. Book the 5am–8am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 787 completed flights over 12 months sit behind that.
Common questions
BOI to DFW questions
How often is BOI to DFW delayed?
Roughly one flight in five arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 18.4% of the 817 flights in this analysis, against 22.7% nationally. Delayed flights are late by an hour and a half on average.
How reliable is BOI to DFW compared with the rest of the country?
81.6% of flights arrive on time here against a national 77.3%, a difference of 4 points in its favour. That is worth a B on this site's grading scale.
What time of day has the fewest delays on BOI to DFW?
The 5am–8am departure window is the strongest at 90.3% on time. The 2pm–5pm window is the weakest at 71.9%, 18 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 May delays on BOI to DFW?
May is the weakest month at 70.6% on time, compared with 89.1% in February. Across the year that is 19 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
- DFW to BOI — the return legseparate record
- Dallas/Fort Worth International (DFW) delay statistics
- BOI to SEA, a related route84.9%
- ORD to DFW, a related route70.4%
- BOI to DEN, a related route81.7%
- American Airlines on-time record81.6%
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
Direction matters. BOI to DFW and DFW to BOI are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
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Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.