PlainFlights

Route · OAK → SEA · 2020–2025 BTS data

Oakland to Seattle

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), OAK to SEA (Oakland to Seattle) ranks #681 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

82.8%
On-time
+3.8 pts
vs US avg
54 min
Delay when late
14,288
Flights
#681 of 4927
Corpus placement

Cancelled

0.7%

Best Month

Nov 2024 92%

Worst Month

Jun 2024 64%

Distance

672 mi

Carriers

19

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 151 35 1 0 WN,AS
Nov 2025 153 22 5 0 OO,AS,WN
Oct 2025 161 34 1 0 AS,WN
Sep 2025 166 42 0 0 WN,AS
Aug 2025 199 58 1 0 OO,WN,AS
Jul 2025 233 66 2 0 AS,OO,WN
Jun 2025 220 70 0 0 AS,OO,WN
May 2025 148 35 0 0 AS,WN
Apr 2025 125 15 0 0 WN,AS
Mar 2025 111 14 0 0 AS,WN
Feb 2025 102 15 1 0 AS,WN
Jan 2025 132 15 0 0 AS,WN
Dec 2024 161 32 0 0 AS,WN
Nov 2024 149 12 0 0 WN,AS
Oct 2024 186 31 0 0 AS,WN
Sep 2024 205 43 0 0 WN,AS
Aug 2024 228 54 1 0 AS,WN,OO
Jul 2024 233 65 0 0 AS,OO,WN
Jun 2024 222 80 0 0 AS,OO,WN
May 2024 192 50 0 0 AS,OO,WN
Apr 2024 180 29 2 0 AS,OO,WN
Mar 2024 171 31 0 0 AS,OO,WN
Feb 2024 158 24 1 0 AS,WN
Jan 2024 171 28 15 0 AS,WN

OAK–SEA seasonal on-time pattern

Best: November (89.5%) · weakest: June (77.1%)

75%80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 80.6%

Strongest calendar month

November

89.5% on-time · ~176 flights/mo

Busiest calendar month

August

~254 flights/mo avg

Weakest calendar month

June

77.1% on-time · ~226 flights/mo

Cancellation Rate

0.7%

30 of 4,157 flights

Diversion Rate

0.0%

0 of 4,157 flights

Explore origin & destination

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

OAK - Oakland

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

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

Compare OAK vs SEA

Origin-hub reliability standing

Mid-pack among OAK departures

From OAK, this corridor sits with 21 other 75–85% on-time routes out of 31 tracked departures, not the hub's reliability leaders (10 at ≥85%) and not the softest ( 0 below 75%). Destination: Seattle · fleet on-time rank #2041 of 4927.

What the Data Says About OAK to SEA

Bureau of Transportation Statistics records show Oakland to Seattle (OAK to SEA) running a 82.8% on-time rate over 14,288 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 54.1 minutes. The 672-mile corridor is served by 19 carriers, and over the last 24 months 0.7% of 4,157 flights were cancelled, 0.0% diverted.

The monthly split is wide on this route: Nov 2024 posted the strongest performance at 92% on-time, while Jun 2024 came in at just 64% - a 28-point swing worth factoring into travel timing.

On the multi-year calendar, OAK–SEA peaks in November at 89.5% on-time while August carries the heaviest traffic (~254 flights per month) ; the softest month is June at 77.1%, 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 OAK to SEA rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, OAK to SEA ranks #681 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 OAK to SEA? ▼
Flights from Oakland to Seattle have a 82.8% on-time rate based on 14,288 flights. The average delay is 54.1 minutes. The best recent month was Nov 2024 with 92% on-time.
What is the cancellation rate for OAK to SEA? ▼
Over the last 24 months, 0.7% of flights on this route were cancelled (30 of 4,157 flights) and 0.0% were diverted.
How far is the flight from OAK to SEA? ▼
The flight distance from Oakland (OAK) to Seattle (SEA) is approximately 672 miles. This route is served by 19 carriers.
When is the best time to fly from OAK to SEA? ▼
The best recent month for on-time performance was Nov 2024 (92% on-time). The worst was Jun 2024 (64% on-time). Consider booking during months with historically better performance.

Airports on this route

OAK Airport

Oakland
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 OAK–SEA data

OAK–SEA runs 3.8 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare OAK and SEA airport profiles: delay causes and top routes differ even on the same corridor. OAK airport
  • If your dates flex, November (89.5% on-time) beats June (77.1%) on this corridor. Seasonal chart
  • 4 other routes post a similar 82.8% 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.