Route · YKM → SEA · 2020–2025 BTS data
Yakima to Seattle
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), YKM to SEA (Yakima to Seattle) ranks #4268 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 89.3%
- On-time
- +10.3 pts
- vs US avg
- 67 min
- Delay when late
- 1,338
- Flights
- #4268 of 4927
- Corpus placement
Cancelled
2.5%
Best Month
Apr 2021 98%
Worst Month
Apr 2022 80%
Distance
103 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2022 | 31 | 13 | 2 | 0 | QX |
| Oct 2022 | 31 | 3 | 0 | 0 | QX |
| Sep 2022 | 36 | 6 | 0 | 0 | QX |
| Aug 2022 | 62 | 5 | 1 | 0 | QX |
| Jul 2022 | 62 | 2 | 1 | 0 | QX |
| Jun 2022 | 60 | 8 | 2 | 0 | QX |
| May 2022 | 62 | 6 | 3 | 0 | QX |
| Apr 2022 | 60 | 12 | 1 | 0 | QX |
| Mar 2022 | 62 | 5 | 1 | 0 | QX |
| Feb 2022 | 56 | 6 | 0 | 0 | QX |
| Jan 2022 | 62 | 8 | 8 | 0 | QX |
| Dec 2021 | 62 | 11 | 5 | 0 | QX |
| Nov 2021 | 55 | 6 | 1 | 0 | QX |
| Oct 2021 | 68 | 4 | 0 | 0 | QX |
| Sep 2021 | 83 | 9 | 0 | 0 | QX |
| Aug 2021 | 62 | 7 | 1 | 0 | QX |
| Jul 2021 | 62 | 3 | 0 | 0 | QX |
| Jun 2021 | 60 | 7 | 0 | 0 | QX |
| May 2021 | 62 | 2 | 2 | 0 | QX |
| Apr 2021 | 60 | 1 | 0 | 0 | QX |
| Mar 2021 | 62 | 6 | 0 | 0 | QX |
| Feb 2021 | 56 | 8 | 4 | 0 | QX |
| Jan 2021 | 62 | 5 | 1 | 0 | QX |
YKM–SEA seasonal on-time pattern
Best: July (96.0%) · weakest: December (74.2%)
Strongest calendar month
July
96.0% on-time · ~62 flights/mo
Busiest calendar month
January
~62 flights/mo avg
Weakest calendar month
December
74.2% on-time · ~47 flights/mo
Cancellation Rate
2.5%
33 of 1,338 flights
Diversion Rate
0.0%
0 of 1,338 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
YKM - Yakima
Full on-time, delay-cause, and seasonal performance for Yakima, WA.
YKM on-time profileSEA - Seattle
Full on-time, delay-cause, and seasonal performance for Seattle, WA.
SEA on-time profileCompare the two airports
See YKM and SEA side by side on delays, cancellations, and reliability.
Compare YKM vs SEASimilar routes
Other BTS-tracked routes with comparable performance or trip length to YKM–SEA.
Routes with a similar on-time rate
What the Data Says About YKM to SEA
Yakima to Seattle (YKM to SEA) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 89.3% on-time rate across 1,338 flights, with delays that do happen averaging 67.2 minutes. The corridor runs roughly 103 miles and is served by 1 carrier. Over the most recent 24 months, 33 of 1,338 flights were cancelled (2.5%) and 0 diverted (0.0%).
The monthly split is wide on this route: Apr 2021 posted the strongest performance at 98% on-time, while Apr 2022 came in at just 80% - a 18-point swing worth factoring into travel timing.
On the multi-year calendar, YKM–SEA peaks in July at 96.0% on-time while January carries the heaviest traffic (~62 flights per month) ; the softest month is December at 74.2%, a 21.8-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does YKM to SEA rank among US routes by traffic? ▼
How often are flights delayed from YKM to SEA? ▼
What is the cancellation rate for YKM to SEA? ▼
How far is the flight from YKM to SEA? ▼
When is the best time to fly from YKM to SEA? ▼
Airports on this route
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 YKM–SEA data
YKM–SEA runs 10.3 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.
- Compare YKM and SEA airport profiles: delay causes and top routes differ even on the same corridor. YKM airport
- If your dates flex, July (96.0% on-time) beats December (74.2%) on this corridor. Seasonal chart
- 4 other routes post a similar 89.3% 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.
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.