TUS to SEA flight delays & on-time performance
Nonstop flights from Tucson International Airport to Seattle–Tacoma International Airport · 1,215 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at TUS or SEA right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Tucson (TUS) to Seattle (SEA) arrived on time 86% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.7% were cancelled, and 3% arrived an hour or more late.
- Delta Air Lines was the most punctual airline here (89% on time); Alaska Airlines was the least (85%).
- Departures scheduled around 6am did best (93% on time); around 4pm did worst (72%).
- Saturday was the most reliable day to fly (93% on time) and Sunday the least (82%).
- The largest source of delay minutes was late-arriving aircraft (46%).
Which airline is most on time from TUS to SEA?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Delta Air Lines | 89% | 1.4% | 18 min | 6.6% | 138 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 87% | 0.0% | 9 min | 3.5% | 371 |
| Alaska Airlines | 85% | 0.9% | 8 min | 2.5% | 556 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am93%17 flights
- 6am93%126 flights
- 7am91%187 flights
- 8am75%28 flights
- 11am87%86 flights
- 12pm93%95 flights
- 1pm91%171 flights
- 2pm80%176 flights
- 3pm77%65 flights
- 4pm72%108 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday87%0.6% cancelled
- Tuesday85%0.0% cancelled
- Wednesday88%0.0% cancelled
- Thursday86%0.6% cancelled
- Friday82%1.9% cancelled
- Saturday93%1.4% cancelled
- Sunday82%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft46%
- Airline (crew, maintenance, cleaning, fueling)41%
- Air traffic control & airport congestion9%
- Extreme weather4%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)57%
- Extreme weather43%
- Air traffic control & airport congestion0%
- Security0%
TUS to SEA: common questions
- How often are TUS to SEA flights on time?
- 86% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Tucson to Seattle cancelled?
- 0.7% of scheduled flights were cancelled (7 of 1,065).
- How long are typical delays?
- Across all flights the average arrival delay was 10 min (early arrivals count as zero). Flights that were late arrived 62 min behind schedule on average, and 3.4% of flights were an hour or more late.
- How long is taxi time at TUS?
- Flights on this route spent 16 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SEA to TUS — 83% on time
More flights from Tucson
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: TUS → SEA, nonstop flights by US airlines that report to the DOT. How we calculate this.