PlainFlights

Route · SNA → SEA · 2020–2025 BTS data

Santa Ana to Seattle

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), SNA to SEA (Santa Ana to Seattle) ranks #312 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

86.2%
On-time
+7.2 pts
vs US avg
71 min
Delay when late
20,946
Flights
#312 of 4927
Corpus placement

Cancelled

1.2%

Best Month

Nov 2025 92%

Worst Month

Jun 2025 70%

Distance

978 mi

Carriers

17

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 319 61 4 1 DL,AS,OO
Nov 2025 329 26 4 0 OO,DL,AS
Oct 2025 341 41 7 2 AS,DL,OO
Sep 2025 330 36 2 1 OO,DL,AS
Aug 2025 358 89 3 0 OO,AS,DL
Jul 2025 378 73 8 0 AS,DL,OO
Jun 2025 359 109 5 0 AS,DL,OO
May 2025 348 84 2 0 AS,OO,DL
Apr 2025 304 33 1 0 DL,OO,AS
Mar 2025 290 33 2 0 AS,DL
Feb 2025 260 33 11 0 AS,DL
Jan 2025 300 43 3 1 AS,DL
Dec 2024 314 50 0 0 AS,DL
Nov 2024 327 37 2 1 AS,DL
Oct 2024 348 40 3 0 AS,DL
Sep 2024 343 52 3 1 AS,DL
Aug 2024 357 60 4 0 AS,DL,OO
Jul 2024 351 47 9 1 AS,DL
Jun 2024 332 54 7 0 AS,DL
May 2024 340 40 4 0 AS,DL
Apr 2024 308 38 1 0 AS,DL
Mar 2024 308 48 2 0 AS,DL
Feb 2024 311 30 3 1 AS,DL
Jan 2024 339 70 6 0 AS,DL

SNA–SEA seasonal on-time pattern

Best: April (89.1%) · weakest: June (81.3%)

80%82%84%86%88%90% JanFebMarAprMayJunJulAugSepOctNovDec 84.3%

Strongest calendar month

April

89.1% on-time · ~258 flights/mo

Busiest calendar month

May

~337 flights/mo avg

Weakest calendar month

June

81.3% on-time · ~297 flights/mo

Cancellation Rate

1.2%

96 of 7,894 flights

Diversion Rate

0.1%

9 of 7,894 flights

Explore origin & destination

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

SNA - Santa Ana

Full on-time, delay-cause, and seasonal performance for Santa Ana, CA.

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

Compare SNA vs SEA

Origin-hub reliability standing

Among SNA's stronger departures

SNA → SEA posts a 86.2% on-time rate, landing in the ≥85% band with 8 of 24 BTS-tracked routes leaving Santa Ana. The same hub also shows 12 mid-band and 4 challenged departures · fleet-wide on-time rank #861 of 4927 (highest on-time = #1).

What the Data Says About SNA to SEA

Santa Ana to Seattle (SNA to SEA) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 86.2% on-time rate across 20,946 flights, with delays that do happen averaging 71.1 minutes. The corridor runs roughly 978 miles and is served by 17 carriers. Over the most recent 24 months, 96 of 7,894 flights were cancelled (1.2%) and 9 diverted (0.1%).

The monthly split is wide on this route: Nov 2025 posted the strongest performance at 92% on-time, while Jun 2025 came in at just 70% - a 23-point swing worth factoring into travel timing.

On the multi-year calendar, SNA–SEA peaks in April at 89.1% on-time while May carries the heaviest traffic (~337 flights per month) ; the softest month is June at 81.3%, a 7.8-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does SNA to SEA rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, SNA to SEA ranks #312 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 SNA to SEA? ▼
Flights from Santa Ana to Seattle have a 86.2% on-time rate based on 20,946 flights. The average delay is 71.1 minutes. The best recent month was Nov 2025 with 92% on-time.
What is the cancellation rate for SNA to SEA? ▼
Over the last 24 months, 1.2% of flights on this route were cancelled (96 of 7,894 flights) and 0.1% were diverted.
How far is the flight from SNA to SEA? ▼
The flight distance from Santa Ana (SNA) to Seattle (SEA) is approximately 978 miles. This route is served by 17 carriers.
When is the best time to fly from SNA to SEA? ▼
The best recent month for on-time performance was Nov 2025 (92% on-time). The worst was Jun 2025 (70% on-time). Consider booking during months with historically better performance.

Airports on this route

SNA Airport

Santa Ana
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 SNA–SEA data

SNA–SEA runs 7.2 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare SNA and SEA airport profiles: delay causes and top routes differ even on the same corridor. SNA airport
  • If your dates flex, April (89.1% on-time) beats June (81.3%) on this corridor. Seasonal chart
  • 4 other routes post a similar 86.2% 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.