A Second DUI in Flagstaff is a different animal from a first, and not by a small margin. The jail minimum jumps from 10 days to 90, the fine roughly triples, and instead of a 90-day license suspension you’re looking at a full year of revocation. But there’s a detail in how Arizona counts “second” that decides a lot of these cases before anyone argues about the traffic stop — and it catches both prosecutors and defendants off guard.
The date that matters isn’t your conviction date. Arizona’s 84-month window is measured from the dates the offenses were committed, not the dates you were convicted. A prior that took a year to resolve can still fall outside the window — or inside it — based on when the driving happened. Get the dates checked before you assume anything.
LEGAL ADVERTISEMENT: This site is an independent referral service operated by Wilder West Assets LLC, not a law firm. We connect people facing repeat DUI charges in Coconino County with independent licensed Arizona attorneys. Nothing on this page is legal advice.
What a second DUI carries
For a second standard DUI within 84 months under A.R.S. § 28-1381, the statutory minimums are:
- Jail: a minimum of 90 days, with at least 30 served consecutively. A court may suspend all but 30 days if you complete a court-ordered treatment program — so 30 days is the practical floor for most compliant defendants, still triple a first offense.
- Fines: a minimum of $3,000 before surcharges and assessments.
- License: a one-year revocation — a revocation, not a suspension, which means reinstatement is an application process rather than an automatic restoration at the end of a term.
- Ignition interlock for 12 months once you’re driving again.
- 30 hours of community restitution, alcohol and drug screening and education, and Traffic Survival School.
If the second offense is also Extreme (0.15+) or Super Extreme (0.20+), the minimums climb further from there — see our Extreme DUI guide for how the tiers work.
The 84-month window, explained properly
Arizona looks back 84 months — seven years — to decide whether a DUI is a “second” offense. Two things about that count matter more than anything else on this page:
- It runs offense date to offense date. Not conviction to conviction, and not conviction to offense. If your first DUI happened in March 2019 and your new one happened in June 2026, that’s more than 84 months apart even if the first case didn’t resolve until 2020.
- If the window has passed, the clock resets. A prior DUI older than 84 months generally doesn’t elevate the new charge to a second offense — it’s charged as a first, with first-offense minimums. That is an enormous difference in exposure, and it turns entirely on arithmetic.
This is the first thing a defense attorney checks, and it’s why you should bring the actual dates from your prior case to any consultation rather than a rough memory of “a few years ago.”
Attacking the prior itself
Beyond the date math, the prior conviction is an element the state has to prove — and priors are not always as solid as the charging document assumes:
- Proof and identity. The state must properly establish that the prior conviction exists and that it’s yours, with admissible records.
- Constitutional validity. A prior obtained without counsel, or without a valid waiver of the right to counsel, may not be usable to enhance a new sentence.
- Out-of-state priors. A DUI from another state only counts if the offense is substantially similar to Arizona’s — a comparison that isn’t always as clean as it looks, especially from states with different BAC schemes or “wet reckless” style dispositions.
Knock out the prior and a 90-day case becomes a 10-day case. That single issue is often worth more than every other argument in the file combined.
The felony line is closer than you think
Two things to be aware of once you have one DUI on your record. First, a third DUI inside the same 84-month window is aggravated DUI — a felony with mandatory prison and a three-year revocation. Second, and more immediately: if your license is currently suspended or revoked from the first DUI and you drive impaired, that alone is a felony, regardless of whether it’s your second or tenth offense. Our aggravated DUI guide covers both triggers.
The practical advice is unglamorous but genuinely important: while a second DUI is pending, don’t drive on a revoked privilege, and confirm your actual status with MVD rather than assuming.
Why the current case still deserves a fight
People with a prior often assume the outcome is foregone and take the first offer. That’s usually a mistake. Everything that makes a first DUI defensible still applies — whether the stop was lawful, whether field sobriety tests were administered and interpreted correctly, whether the breath instrument was calibrated and the 20-minute observation honored, whether the blood chain of custody holds, and whether rising-BAC timing undercuts the state’s number. A second-offense case that gets reduced to a first, or resolved to a non-DUI charge, changes your exposure by months of custody. See the first-offense guide for the underlying framework and the main DUI guide for how Coconino County courts handle these cases.
Frequently asked questions
How long do I actually serve on a second DUI?
The statutory minimum is 90 days, but a court may suspend all but 30 days if you complete a court-ordered treatment program. So 30 days in custody is the realistic floor for most compliant defendants — three times a first offense, and much harder to reduce.
How is the 84-month window measured?
From offense date to offense date, not conviction to conviction. If more than 84 months separate the two incidents, the prior generally doesn’t count as a prior, and the new case is charged with first-offense minimums.
Does a DUI from another state count against me in Arizona?
It can, but only if the out-of-state offense is substantially similar to Arizona’s DUI statute. That comparison is genuinely contestable, particularly with states that use different BAC structures or offer reduced dispositions, and it’s worth having an attorney examine rather than conceding.
Do I lose my license for a year?
A second DUI within 84 months carries a one-year license revocation. A revocation is more serious than a suspension — driving privileges aren’t automatically restored at the end of the term; you have to apply for reinstatement and satisfy the conditions, including the interlock requirement.
Is a second DUI a felony?
Not by itself. A second DUI is a misdemeanor. It becomes a felony if a separate trigger applies — most commonly driving on a license already suspended from the first DUI, or reaching a third offense inside the 84-month window.
Should I just plead guilty since I already have a prior?
Almost never before the case is reviewed. The prior’s validity and date math are themselves contestable, and the underlying stop and testing are open to the same challenges as any DUI. Pleading early forecloses all of it and locks in the higher minimums.
Related guides
Facing a second DUI in Flagstaff? Get a free, confidential read
Bring the dates from your prior case. We’ll connect you with an independent licensed Arizona attorney who handles repeat DUI cases in Coconino County — starting with whether that prior actually counts.
Sources & Corrections
Primary sources checked for this page on July 31, 2026:
- A.R.S. § 28-1381 — Driving under the influence (second-offense penalties; the 84-month window)
- A.R.S. § 28-1383 — Aggravated DUI (third offense in 84 months; suspended-license trigger)
- Arizona Judicial Branch — 2025 DUI Sentencing Chart (effective September 26, 2025)
See an error on this page? Email corrections@flagstaffazattorney.com — corrections are reviewed and logged. Our corrections policy.
Not legal advice. The Flagstaff Legal Resource Center is an independent referral service operated by Wilder West Assets LLC — not a law firm. Figures are statutory minimums verified on the date shown; outcomes depend on your record and the facts of your case. No attorney-client relationship is created by using this site. Verify any attorney’s credentials through the State Bar of Arizona.