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Route · GEG → SFO · 2020–2025 BTS data

Spokane to San Francisco

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), GEG to SFO (Spokane to San Francisco) ranks #2782 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

84.2%
On-time
+5.2 pts
vs US avg
70 min
Delay when late
4,273
Flights
#2782 of 4927
Corpus placement

Cancelled

0.5%

Best Month

Jan 2025 95%

Worst Month

Dec 2024 70%

Distance

733 mi

Carriers

7

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 62 9 0 0 OO
Nov 2025 79 17 0 0 OO
Oct 2025 89 26 0 0 OO
Sep 2025 82 13 0 0 OO
Aug 2025 86 13 0 0 OO,UA
Jul 2025 87 25 0 0 OO
Jun 2025 78 7 0 1 OO
May 2025 62 13 0 0 OO
Apr 2025 81 11 0 1 OO
Mar 2025 75 14 1 0 OO
Feb 2025 54 11 1 1 OO
Jan 2025 58 3 0 0 OO
Dec 2024 60 18 0 0 OO
Nov 2024 59 11 2 1 OO
Oct 2024 62 12 0 0 OO
Sep 2024 58 5 0 0 OO,AS
Aug 2024 44 4 0 0 AS,OO,UA
Jul 2024 31 5 0 0 OO
May 2024 37 14 0 0 OO
Apr 2024 30 3 0 0 OO
Mar 2024 35 12 1 0 OO
Feb 2024 52 9 2 0 OO
Jan 2024 58 6 0 0 OO
Dec 2023 74 18 0 0 OO

GEG–SFO seasonal on-time pattern

Best: September (91.3%) · weakest: December (73.7%)

70%75%80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 73.7%

Strongest calendar month

September

91.3% on-time · ~69 flights/mo

Busiest calendar month

June

~84 flights/mo avg

Weakest calendar month

December

73.7% on-time · ~63 flights/mo

Cancellation Rate

0.5%

7 of 1,493 flights

Diversion Rate

0.3%

4 of 1,493 flights

Explore origin & destination

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

GEG - Spokane

Full on-time, delay-cause, and seasonal performance for Spokane, WA.

GEG on-time profile

SFO - San Francisco

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

SFO on-time profile

Compare the two airports

See GEG and SFO side by side on delays, cancellations, and reliability.

Compare GEG vs SFO

Origin-hub reliability standing

Mid-pack among GEG departures

From GEG, this corridor sits with 6 other 75–85% on-time routes out of 18 tracked departures, not the hub's reliability leaders (12 at ≥85%) and not the softest ( 0 below 75%). Destination: San Francisco · fleet on-time rank #1509 of 4927.

What the Data Says About GEG to SFO

Bureau of Transportation Statistics records show Spokane to San Francisco (GEG to SFO) running a 84.2% on-time rate over 4,273 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 70.0 minutes. The 733-mile corridor is served by 7 carriers, and over the last 24 months 0.5% of 1,493 flights were cancelled, 0.3% diverted.

The monthly split is wide on this route: Jan 2025 posted the strongest performance at 95% on-time, while Dec 2024 came in at just 70% - a 25-point swing worth factoring into travel timing.

On the multi-year calendar, GEG–SFO peaks in September at 91.3% on-time while June carries the heaviest traffic (~84 flights per month) ; the softest month is December at 73.7%, a 17.6-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does GEG to SFO rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, GEG to SFO ranks #2782 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 GEG to SFO? ▼
Flights from Spokane to San Francisco have a 84.2% on-time rate based on 4,273 flights. The average delay is 70.0 minutes. The best recent month was Jan 2025 with 95% on-time.
What is the cancellation rate for GEG to SFO? ▼
Over the last 24 months, 0.5% of flights on this route were cancelled (7 of 1,493 flights) and 0.3% were diverted.
How far is the flight from GEG to SFO? ▼
The flight distance from Spokane (GEG) to San Francisco (SFO) is approximately 733 miles. This route is served by 7 carriers.
When is the best time to fly from GEG to SFO? ▼
The best recent month for on-time performance was Jan 2025 (95% on-time). The worst was Dec 2024 (70% on-time). Consider booking during months with historically better performance.

Airports on this route

GEG Airport

Spokane
SFO Airport

San Francisco
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 GEG–SFO data

GEG–SFO runs 5.2 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare GEG and SFO airport profiles: delay causes and top routes differ even on the same corridor. GEG airport
  • If your dates flex, September (91.3% on-time) beats December (73.7%) on this corridor. Seasonal chart
  • 4 other routes post a similar 84.2% 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.