PlainFlights

Route · SEA → TPA · 2020–2025 BTS data

Seattle to Tampa

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), SEA to TPA (Seattle to Tampa) ranks #2230 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

80.6%
On-time
+1.6 pts
vs US avg
54 min
Delay when late
5,626
Flights
#2230 of 4927
Corpus placement

Cancelled

1.2%

Best Month

Sep 2025 87%

Worst Month

Jun 2025 56%

Distance

2,520 mi

Carriers

3

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 87 19 1 2 DL,AS
Nov 2025 68 12 0 2 AS,DL
Oct 2025 62 16 1 1 AS,DL
Sep 2025 77 10 0 1 DL,AS
Aug 2025 88 31 0 1 AS,DL
Jul 2025 93 41 1 1 AS,DL
Jun 2025 90 40 0 3 AS,DL
May 2025 93 22 0 0 AS,DL
Apr 2025 87 25 0 0 AS,DL
Mar 2025 91 15 1 0 AS,DL
Feb 2025 84 15 0 0 AS,DL
Jan 2025 93 18 0 0 AS,DL
Dec 2024 88 23 0 0 AS,DL
Nov 2024 67 10 0 0 AS,DL
Oct 2024 61 11 6 0 AS,DL
Sep 2024 77 17 3 1 AS,DL
Aug 2024 87 32 2 3 AS,DL
Jul 2024 93 40 2 1 AS,DL
Jun 2024 90 20 1 1 AS,DL
May 2024 93 16 0 0 AS,DL
Apr 2024 90 29 1 1 AS,DL
Mar 2024 92 25 0 0 AS,DL
Feb 2024 83 13 0 0 AS,DL
Jan 2024 90 21 5 0 AS,DL

SEA–TPA seasonal on-time pattern

Best: November (87.0%) · weakest: June (74.6%)

70%75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 77.3%

Strongest calendar month

November

87.0% on-time · ~74 flights/mo

Busiest calendar month

May

~92 flights/mo avg

Weakest calendar month

June

74.6% on-time · ~77 flights/mo

Cancellation Rate

1.2%

24 of 2,024 flights

Diversion Rate

0.9%

18 of 2,024 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

TPA - Tampa

Full on-time, delay-cause, and seasonal performance for Tampa, FL.

TPA on-time profile

Compare the two airports

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

Compare SEA vs TPA

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: Tampa · fleet on-time rank #2899 of 4927.

What the Data Says About SEA to TPA

5,626 tracked flights put the SEA to TPA pairing (Seattle to Tampa) at a 80.6% on-time rate, squarely in line with the wider network. Delays that do occur run 54.0 minutes on average. Across the 2,520-mile route and its 3 carriers, the trailing 24 months show 1.2% cancelled and 0.9% diverted (2,024 flights sampled).

The monthly split is wide on this route: Sep 2025 posted the strongest performance at 87% on-time, while Jun 2025 came in at just 56% - a 32-point swing worth factoring into travel timing.

On the multi-year calendar, SEA–TPA peaks in November at 87.0% on-time while May carries the heaviest traffic (~92 flights per month) ; the softest month is June at 74.6%, 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 TPA rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, SEA to TPA ranks #2230 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 TPA? ▼
Flights from Seattle to Tampa have a 80.6% on-time rate based on 5,626 flights. The average delay is 54.0 minutes. The best recent month was Sep 2025 with 87% on-time.
What is the cancellation rate for SEA to TPA? ▼
Over the last 24 months, 1.2% of flights on this route were cancelled (24 of 2,024 flights) and 0.9% were diverted.
How far is the flight from SEA to TPA? ▼
The flight distance from Seattle (SEA) to Tampa (TPA) is approximately 2,520 miles. This route is served by 3 carriers.
When is the best time to fly from SEA to TPA? ▼
The best recent month for on-time performance was Sep 2025 (87% on-time). The worst was Jun 2025 (56% on-time). Consider booking during months with historically better performance.

Airports on this route

SEA Airport

Seattle
TPA Airport

Tampa
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–TPA data

SEA–TPA is mid-pack at 80.6% on-time; month and carrier mix move more than the corridor headline.

  • Compare SEA and TPA airport profiles: delay causes and top routes differ even on the same corridor. SEA airport
  • If your dates flex, November (87.0% on-time) beats June (74.6%) on this corridor. Seasonal chart
  • 4 other routes post a similar 80.6% 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.