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Route · TUS → SEA · 2020–2025 BTS data

Tucson to Seattle

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), TUS to SEA (Tucson to Seattle) ranks #2138 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

83.8%
On-time
+4.8 pts
vs US avg
71 min
Delay when late
5,851
Flights
#2138 of 4927
Corpus placement

Cancelled

0.4%

Best Month

Jul 2025 95%

Worst Month

Jun 2024 61%

Distance

1,216 mi

Carriers

11

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 85 22 0 0 DL,AS,OO
Nov 2025 89 16 1 0 OO,AS
Oct 2025 82 9 1 0 AS,OO
Sep 2025 90 8 0 0 OO,AS
Aug 2025 93 10 0 0 OO,AS
Jul 2025 93 5 0 0 AS,OO
Jun 2025 90 16 0 0 AS,OO
May 2025 93 15 0 0 AS,OO,DL
Apr 2025 90 15 1 0 DL,AS
Mar 2025 90 12 0 0 AS,DL
Feb 2025 80 13 1 0 AS,DL
Jan 2025 90 9 1 0 AS,DL
Dec 2024 85 11 0 0 AS,DL
Nov 2024 80 11 0 0 AS,DL,OO
Oct 2024 78 11 0 0 AS,OO
Sep 2024 90 18 0 0 OO,AS
Aug 2024 93 33 0 0 AS,OO
Jul 2024 93 32 1 0 AS,OO
Jun 2024 90 35 0 1 AS,DL,OO
May 2024 94 25 1 0 AS,DL,OO
Apr 2024 90 11 0 1 AS,DL
Mar 2024 87 10 0 0 AS,DL
Feb 2024 75 5 0 0 AS,DL
Jan 2024 82 16 2 0 AS,DL,OO

TUS–SEA seasonal on-time pattern

Best: March (89.2%) · weakest: June (76.0%)

75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 81.2%

Strongest calendar month

March

89.2% on-time · ~92 flights/mo

Busiest calendar month

March

~92 flights/mo avg

Weakest calendar month

June

76.0% on-time · ~90 flights/mo

Cancellation Rate

0.4%

9 of 2,102 flights

Diversion Rate

0.1%

2 of 2,102 flights

Explore origin & destination

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

TUS - Tucson

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

TUS on-time profile

SEA - Seattle

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

SEA on-time profile

Compare the two airports

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

Compare TUS vs SEA

Origin-hub reliability standing

Mid-pack among TUS departures

From TUS, this corridor sits with 7 other 75–85% on-time routes out of 15 tracked departures, not the hub's reliability leaders (8 at ≥85%) and not the softest ( 0 below 75%). Destination: Seattle · fleet on-time rank #1678 of 4927.

What the Data Says About TUS to SEA

Bureau of Transportation Statistics records show Tucson to Seattle (TUS to SEA) running a 83.8% on-time rate over 5,851 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 71.2 minutes. The 1,216-mile corridor is served by 11 carriers, and over the last 24 months 0.4% of 2,102 flights were cancelled, 0.1% diverted.

The monthly split is wide on this route: Jul 2025 posted the strongest performance at 95% on-time, while Jun 2024 came in at just 61% - a 34-point swing worth factoring into travel timing.

On the multi-year calendar, TUS–SEA peaks in March at 89.2% on-time ; the softest month is June at 76.0%, a 13.2-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does TUS to SEA rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, TUS to SEA ranks #2138 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 TUS to SEA? ▼
Flights from Tucson to Seattle have a 83.8% on-time rate based on 5,851 flights. The average delay is 71.2 minutes. The best recent month was Jul 2025 with 95% on-time.
What is the cancellation rate for TUS to SEA? ▼
Over the last 24 months, 0.4% of flights on this route were cancelled (9 of 2,102 flights) and 0.1% were diverted.
How far is the flight from TUS to SEA? ▼
The flight distance from Tucson (TUS) to Seattle (SEA) is approximately 1,216 miles. This route is served by 11 carriers.
When is the best time to fly from TUS to SEA? ▼
The best recent month for on-time performance was Jul 2025 (95% on-time). The worst was Jun 2024 (61% on-time). Consider booking during months with historically better performance.

Airports on this route

TUS Airport

Tucson
SEA Airport

Seattle
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 TUS–SEA data

TUS–SEA runs 4.8 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare TUS and SEA airport profiles: delay causes and top routes differ even on the same corridor. TUS airport
  • If your dates flex, March (89.2% on-time) beats June (76.0%) on this corridor. Seasonal chart
  • 4 other routes post a similar 83.8% 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.