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Route · FAT → SEA · 2020–2025 BTS data

Fresno to Seattle

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), FAT to SEA (Fresno to Seattle) ranks #2376 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

85.2%
On-time
+6.2 pts
vs US avg
55 min
Delay when late
5,301
Flights
#2376 of 4927
Corpus placement

Cancelled

1.1%

Best Month

Sep 2024 93%

Worst Month

May 2025 69%

Distance

748 mi

Carriers

9

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 62 18 0 1 AS,OO
Nov 2025 59 10 0 0 OO,AS
Oct 2025 101 14 3 0 AS,OO
Sep 2025 107 22 0 0 OO,AS
Aug 2025 119 28 2 0 OO,AS
Jul 2025 123 35 2 0 AS,OO
Jun 2025 120 36 3 1 AS,OO
May 2025 110 34 0 0 AS,OO
Apr 2025 69 16 0 0 OO,AS
Mar 2025 44 9 0 0 AS,OO
Feb 2025 38 11 0 0 AS,OO
Jan 2025 62 9 0 0 AS,OO
Dec 2024 74 16 0 1 AS,OO
Nov 2024 87 11 1 0 OO,AS
Oct 2024 89 10 0 0 AS,OO
Sep 2024 90 6 1 0 OO,AS
Aug 2024 74 16 2 0 AS,OO
Jul 2024 61 16 0 0 AS,OO
Jun 2024 72 17 0 0 AS,OO
May 2024 86 10 0 0 AS,OO
Apr 2024 67 6 0 0 AS,OO
Mar 2024 62 12 1 0 AS,OO
Feb 2024 53 7 0 1 AS,OO
Jan 2024 48 6 5 0 AS,OO

FAT–SEA seasonal on-time pattern

Best: April (89.6%) · weakest: December (79.6%)

75%80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 79.6%

Strongest calendar month

April

89.6% on-time · ~67 flights/mo

Busiest calendar month

August

~90 flights/mo avg

Weakest calendar month

December

79.6% on-time · ~64 flights/mo

Cancellation Rate

1.1%

20 of 1,877 flights

Diversion Rate

0.2%

4 of 1,877 flights

Explore origin & destination

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

FAT - Fresno

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

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

Compare FAT vs SEA

Origin-hub reliability standing

Among FAT's stronger departures

FAT → SEA posts a 85.2% on-time rate, landing in the ≥85% band with 5 of 11 BTS-tracked routes leaving Fresno. The same hub also shows 6 mid-band and 0 challenged departures · fleet-wide on-time rank #1148 of 4927 (highest on-time = #1).

What the Data Says About FAT to SEA

Fresno to Seattle (FAT to SEA) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 85.2% on-time rate across 5,301 flights, with delays that do happen averaging 55.4 minutes. The corridor runs roughly 748 miles and is served by 9 carriers. Over the most recent 24 months, 20 of 1,877 flights were cancelled (1.1%) and 4 diverted (0.2%).

The monthly split is wide on this route: Sep 2024 posted the strongest performance at 93% on-time, while May 2025 came in at just 69% - a 24-point swing worth factoring into travel timing.

On the multi-year calendar, FAT–SEA peaks in April at 89.6% on-time while August carries the heaviest traffic (~90 flights per month) ; the softest month is December at 79.6%, a 10.0-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does FAT to SEA rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, FAT to SEA ranks #2376 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 FAT to SEA? ▼
Flights from Fresno to Seattle have a 85.2% on-time rate based on 5,301 flights. The average delay is 55.4 minutes. The best recent month was Sep 2024 with 93% on-time.
What is the cancellation rate for FAT to SEA? ▼
Over the last 24 months, 1.1% of flights on this route were cancelled (20 of 1,877 flights) and 0.2% were diverted.
How far is the flight from FAT to SEA? ▼
The flight distance from Fresno (FAT) to Seattle (SEA) is approximately 748 miles. This route is served by 9 carriers.
When is the best time to fly from FAT to SEA? ▼
The best recent month for on-time performance was Sep 2024 (93% on-time). The worst was May 2025 (69% on-time). Consider booking during months with historically better performance.

Airports on this route

FAT Airport

Fresno
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 FAT–SEA data

FAT–SEA runs 6.2 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare FAT and SEA airport profiles: delay causes and top routes differ even on the same corridor. FAT airport
  • If your dates flex, April (89.6% on-time) beats December (79.6%) on this corridor. Seasonal chart
  • 4 other routes post a similar 85.2% 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.