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Route · TPA → SEA · 2020–2025 BTS data

Tampa to Seattle

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), TPA to SEA (Tampa to Seattle) ranks #2231 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

78.5%
On-time
-0.5 pts
vs US avg
64 min
Delay when late
5,625
Flights
#2231 of 4927
Corpus placement

Cancelled

1.6%

Best Month

Nov 2025 88%

Worst Month

Apr 2024 60%

Distance

2,520 mi

Carriers

3

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 86 31 2 0 DL,AS
Nov 2025 67 8 0 0 DL,AS
Oct 2025 63 13 2 0 AS,DL
Sep 2025 77 16 0 0 DL,AS
Aug 2025 88 23 0 1 AS,DL
Jul 2025 93 25 0 1 AS,DL
Jun 2025 90 28 0 0 AS,DL
May 2025 93 37 0 0 AS,DL
Apr 2025 87 20 0 0 DL,AS
Mar 2025 91 25 2 1 AS,DL
Feb 2025 84 24 0 0 AS,DL
Jan 2025 93 16 0 0 AS,DL
Dec 2024 87 19 1 0 AS,DL
Nov 2024 66 18 0 0 AS,DL
Oct 2024 61 8 6 0 AS,DL
Sep 2024 78 20 4 0 AS,DL
Aug 2024 87 26 3 0 AS,DL
Jul 2024 93 35 2 0 AS,DL
Jun 2024 90 27 1 0 AS,DL
May 2024 93 37 0 0 AS,DL
Apr 2024 90 36 1 0 AS,DL
Mar 2024 92 25 1 0 AS,DL
Feb 2024 83 13 0 0 AS,DL
Jan 2024 90 13 7 0 AS,DL

TPA–SEA seasonal on-time pattern

Best: October (85.3%) · weakest: June (71.2%)

70%75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 75.2%

Strongest calendar month

October

85.3% on-time · ~71 flights/mo

Busiest calendar month

May

~93 flights/mo avg

Weakest calendar month

June

71.2% on-time · ~77 flights/mo

Cancellation Rate

1.6%

32 of 2,022 flights

Diversion Rate

0.1%

3 of 2,022 flights

Explore origin & destination

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

TPA - Tampa

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

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

Compare TPA vs SEA

Origin-hub reliability standing

Mid-pack among TPA departures

From TPA, this corridor sits with 46 other 75–85% on-time routes out of 51 tracked departures, not the hub's reliability leaders (3 at ≥85%) and not the softest ( 2 below 75%). Destination: Seattle · fleet on-time rank #3704 of 4927.

What the Data Says About TPA to SEA

5,625 tracked flights put the TPA to SEA pairing (Tampa to Seattle) at a 78.5% on-time rate, squarely in line with the wider network. Delays that do occur run 64.3 minutes on average. Across the 2,520-mile route and its 3 carriers, the trailing 24 months show 1.6% cancelled and 0.1% diverted (2,022 flights sampled).

The monthly split is wide on this route: Nov 2025 posted the strongest performance at 88% on-time, while Apr 2024 came in at just 60% - a 28-point swing worth factoring into travel timing.

On the multi-year calendar, TPA–SEA peaks in October at 85.3% on-time while May carries the heaviest traffic (~93 flights per month) ; the softest month is June at 71.2%, a 14.1-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does TPA to SEA rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, TPA to SEA ranks #2231 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 TPA to SEA? ▼
Flights from Tampa to Seattle have a 78.5% on-time rate based on 5,625 flights. The average delay is 64.3 minutes. The best recent month was Nov 2025 with 88% on-time.
What is the cancellation rate for TPA to SEA? ▼
Over the last 24 months, 1.6% of flights on this route were cancelled (32 of 2,022 flights) and 0.1% were diverted.
How far is the flight from TPA to SEA? ▼
The flight distance from Tampa (TPA) to Seattle (SEA) is approximately 2,520 miles. This route is served by 3 carriers.
When is the best time to fly from TPA to SEA? ▼
The best recent month for on-time performance was Nov 2025 (88% on-time). The worst was Apr 2024 (60% on-time). Consider booking during months with historically better performance.

Airports on this route

TPA Airport

Tampa
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 TPA–SEA data

TPA–SEA is mid-pack at 78.5% on-time; month and carrier mix move more than the corridor headline.

  • Compare TPA and SEA airport profiles: delay causes and top routes differ even on the same corridor. TPA airport
  • If your dates flex, October (85.3% on-time) beats June (71.2%) on this corridor. Seasonal chart
  • 4 other routes post a similar 78.5% 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.