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Route · SEA → TUS · 2020–2025 BTS data

Seattle to Tucson

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), SEA to TUS (Seattle to Tucson) ranks #2137 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

82.1%
On-time
+3.1 pts
vs US avg
57 min
Delay when late
5,852
Flights
#2137 of 4927
Corpus placement

Cancelled

0.2%

Best Month

Feb 2024 88%

Worst Month

Aug 2024 62%

Distance

1,216 mi

Carriers

11

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 85 26 0 0 DL,AS,OO
Nov 2025 89 28 0 0 OO,AS
Oct 2025 83 13 1 0 AS,OO
Sep 2025 90 12 0 0 OO,AS
Aug 2025 93 12 0 0 OO,AS
Jul 2025 93 20 0 0 AS,OO
Jun 2025 90 16 0 0 AS,OO
May 2025 93 14 0 0 AS,OO,DL
Apr 2025 90 15 0 0 DL,AS
Mar 2025 90 21 0 0 AS,DL
Feb 2025 80 16 1 0 AS,DL
Jan 2025 90 17 0 0 AS,DL
Dec 2024 85 13 0 0 AS,DL
Nov 2024 80 10 0 0 AS,DL,OO
Oct 2024 79 17 0 0 AS,OO
Sep 2024 90 26 0 0 OO,AS
Aug 2024 93 35 0 0 AS,OO
Jul 2024 93 19 1 0 AS,OO
Jun 2024 90 23 0 0 AS,DL,OO
May 2024 94 14 0 1 AS,DL,OO
Apr 2024 90 19 0 0 AS,DL
Mar 2024 87 17 0 0 AS,DL
Feb 2024 75 9 0 0 AS,DL
Jan 2024 82 20 2 0 AS,DL,OO

SEA–TUS seasonal on-time pattern

Best: April (87.4%) · weakest: August (75.0%)

70%75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 79.2%

Strongest calendar month

April

87.4% on-time · ~81 flights/mo

Busiest calendar month

March

~92 flights/mo avg

Weakest calendar month

August

75.0% on-time · ~83 flights/mo

Cancellation Rate

0.2%

5 of 2,104 flights

Diversion Rate

0.0%

1 of 2,104 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

SEA - Seattle

Full on-time, delay-cause, and seasonal performance for Seattle, WA.

SEA on-time profile

TUS - Tucson

Full on-time, delay-cause, and seasonal performance for Tucson, AZ.

TUS on-time profile

Compare the two airports

See SEA and TUS side by side on delays, cancellations, and reliability.

Compare SEA vs TUS

Origin-hub reliability standing

Mid-pack among SEA departures

From SEA, this corridor sits with 63 other 75–85% on-time routes out of 89 tracked departures, not the hub's reliability leaders (25 at ≥85%) and not the softest ( 1 below 75%). Destination: Tucson · fleet on-time rank #2324 of 4927.

What the Data Says About SEA to TUS

Bureau of Transportation Statistics records show Seattle to Tucson (SEA to TUS) running a 82.1% on-time rate over 5,852 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 57.1 minutes. The 1,216-mile corridor is served by 11 carriers, and over the last 24 months 0.2% of 2,104 flights were cancelled, 0.0% diverted.

The monthly split is wide on this route: Feb 2024 posted the strongest performance at 88% on-time, while Aug 2024 came in at just 62% - a 26-point swing worth factoring into travel timing.

On the multi-year calendar, SEA–TUS peaks in April at 87.4% on-time while March carries the heaviest traffic (~92 flights per month) ; the softest month is August at 75.0%, a 12.4-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does SEA to TUS rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, SEA to TUS ranks #2137 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from SEA to TUS? ▼
Flights from Seattle to Tucson have a 82.1% on-time rate based on 5,852 flights. The average delay is 57.1 minutes. The best recent month was Feb 2024 with 88% on-time.
What is the cancellation rate for SEA to TUS? ▼
Over the last 24 months, 0.2% of flights on this route were cancelled (5 of 2,104 flights) and 0.0% were diverted.
How far is the flight from SEA to TUS? ▼
The flight distance from Seattle (SEA) to Tucson (TUS) is approximately 1,216 miles. This route is served by 11 carriers.
When is the best time to fly from SEA to TUS? ▼
The best recent month for on-time performance was Feb 2024 (88% on-time). The worst was Aug 2024 (62% on-time). Consider booking during months with historically better performance.

Airports on this route

SEA Airport

Seattle
TUS Airport

Tucson
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using SEA–TUS data

SEA–TUS runs 3.1 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare SEA and TUS airport profiles: delay causes and top routes differ even on the same corridor. SEA airport
  • If your dates flex, April (87.4% on-time) beats August (75.0%) on this corridor. Seasonal chart
  • 4 other routes post a similar 82.1% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.