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Route · SEA → HNL · 2020–2025 BTS data

Seattle to Honolulu

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), SEA to HNL (Seattle to Honolulu) ranks #657 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

76.3%
On-time
-2.7 pts
vs US avg
67 min
Delay when late
14,550
Flights
#657 of 4927
Corpus placement

Cancelled

1.2%

Best Month

Mar 2024 84%

Worst Month

Jul 2025 52%

Distance

2,677 mi

Carriers

7

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 256 98 4 3 DL,AS,HA
Nov 2025 234 80 2 5 HA,AS,DL
Oct 2025 248 55 3 0 AS,DL,HA
Sep 2025 240 61 1 0 DL,AS,HA
Aug 2025 248 104 1 0 HA,AS,DL
Jul 2025 248 120 6 0 AS,DL,HA
Jun 2025 240 96 1 0 AS,DL,HA
May 2025 248 72 0 0 AS,DL,HA
Apr 2025 239 48 0 0 HA,AS,DL
Mar 2025 269 81 1 1 AS,DL,HA
Feb 2025 244 86 1 0 AS,DL,HA
Jan 2025 278 60 5 4 AS,DL,HA
Dec 2024 276 81 4 1 AS,DL,HA
Nov 2024 242 42 2 0 HA,AS,DL
Oct 2024 249 77 0 0 AS,DL,HA
Sep 2024 240 47 0 0 AS,DL,HA
Aug 2024 248 49 0 0 AS,DL,HA
Jul 2024 248 58 2 0 AS,DL,HA
Jun 2024 241 73 2 2 AS,DL,HA
May 2024 239 45 1 0 AS,DL,HA
Apr 2024 231 46 0 0 AS,DL,HA
Mar 2024 245 39 1 1 AS,DL,HA
Feb 2024 220 42 0 1 AS,DL,HA
Jan 2024 233 81 32 36 AS,DL,HA

SEA–HNL seasonal on-time pattern

Best: September (82.4%) · weakest: December (69.3%)

65%70%75%80%85% JanFebMarAprMayJunJulAugSepOctNovDec 69.3%

Strongest calendar month

September

82.4% on-time · ~197 flights/mo

Busiest calendar month

December

~221 flights/mo avg

Weakest calendar month

December

69.3% on-time · ~221 flights/mo

Cancellation Rate

1.2%

69 of 5,904 flights

Diversion Rate

0.9%

54 of 5,904 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

HNL - Honolulu

Full on-time, delay-cause, and seasonal performance for Honolulu, HI.

HNL on-time profile

Compare the two airports

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

Compare SEA vs HNL

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: Honolulu · fleet on-time rank #4254 of 4927.

What the Data Says About SEA to HNL

The Seattle to Honolulu corridor (SEA to HNL) posts a 76.3% on-time rate on the lower edge of the average band, based on 14,550 tracked flights. Late flights run 66.5 minutes behind on average. 7 carriers cover the 2,677-mile route; over the last 24 months, 69 of 5,904 flights were cancelled (1.2%) and 0.9% diverted.

The monthly split is wide on this route: Mar 2024 posted the strongest performance at 84% on-time, while Jul 2025 came in at just 52% - a 33-point swing worth factoring into travel timing.

On the multi-year calendar, SEA–HNL peaks in September at 82.4% on-time while December carries the heaviest traffic (~221 flights per month) ; the softest month is December at 69.3%, a 13.1-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does SEA to HNL rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, SEA to HNL ranks #657 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 HNL? ▼
Flights from Seattle to Honolulu have a 76.3% on-time rate based on 14,550 flights. The average delay is 66.5 minutes. The best recent month was Mar 2024 with 84% on-time.
What is the cancellation rate for SEA to HNL? ▼
Over the last 24 months, 1.2% of flights on this route were cancelled (69 of 5,904 flights) and 0.9% were diverted.
How far is the flight from SEA to HNL? ▼
The flight distance from Seattle (SEA) to Honolulu (HNL) is approximately 2,677 miles. This route is served by 7 carriers.
When is the best time to fly from SEA to HNL? ▼
The best recent month for on-time performance was Mar 2024 (84% on-time). The worst was Jul 2025 (52% on-time). Consider booking during months with historically better performance.

Airports on this route

SEA Airport

Seattle
HNL Airport

Honolulu
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–HNL data

SEA–HNL is mid-pack at 76.3% on-time; month and carrier mix move more than the corridor headline.

  • Compare SEA and HNL airport profiles: delay causes and top routes differ even on the same corridor. SEA airport
  • If your dates flex, September (82.4% on-time) beats December (69.3%) on this corridor. Seasonal chart
  • 4 other routes post a similar 76.3% 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.