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Route · SFO → GEG · 2020–2025 BTS data

San Francisco to Spokane

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), SFO to GEG (San Francisco to Spokane) ranks #2783 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

84.6%
On-time
+5.6 pts
vs US avg
70 min
Delay when late
4,271
Flights
#2783 of 4927
Corpus placement

Cancelled

0.7%

Best Month

Apr 2025 90%

Worst Month

Jul 2025 68%

Distance

733 mi

Carriers

7

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 62 11 0 0 OO
Nov 2025 78 16 0 1 OO
Oct 2025 89 24 0 0 OO
Sep 2025 83 16 0 0 OO
Aug 2025 85 14 0 0 OO,UA
Jul 2025 87 28 0 0 OO
Jun 2025 78 16 0 0 OO
May 2025 62 10 0 0 OO
Apr 2025 81 8 0 0 OO
Mar 2025 74 11 2 0 OO
Feb 2025 54 9 0 0 OO
Jan 2025 58 10 0 0 OO
Dec 2024 60 11 0 0 OO
Nov 2024 59 10 3 0 OO
Oct 2024 62 12 0 0 OO
Sep 2024 58 9 0 0 OO,AS
Aug 2024 45 5 0 0 AS,OO,UA
Jul 2024 31 5 0 0 OO
May 2024 34 14 0 1 OO
Apr 2024 30 9 2 0 OO
Mar 2024 35 2 1 0 OO
Feb 2024 52 6 3 0 OO
Jan 2024 58 6 0 0 OO
Dec 2023 73 15 0 0 OO

SFO–GEG seasonal on-time pattern

Best: September (89.4%) · weakest: December (78.2%)

75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 78.2%

Strongest calendar month

September

89.4% on-time · ~69 flights/mo

Busiest calendar month

June

~83 flights/mo avg

Weakest calendar month

December

78.2% on-time · ~63 flights/mo

Cancellation Rate

0.7%

11 of 1,488 flights

Diversion Rate

0.1%

2 of 1,488 flights

Explore origin & destination

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

SFO - San Francisco

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

SFO on-time profile

GEG - Spokane

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

GEG on-time profile

Compare the two airports

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

Compare SFO vs GEG

Origin-hub reliability standing

Mid-pack among SFO departures

From SFO, this corridor sits with 50 other 75–85% on-time routes out of 73 tracked departures, not the hub's reliability leaders (20 at ≥85%) and not the softest ( 3 below 75%). Destination: Spokane · fleet on-time rank #1385 of 4927.

What the Data Says About SFO to GEG

Bureau of Transportation Statistics records show San Francisco to Spokane (SFO to GEG) running a 84.6% on-time rate over 4,271 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 70.3 minutes. The 733-mile corridor is served by 7 carriers, and over the last 24 months 0.7% of 1,488 flights were cancelled, 0.1% diverted.

The monthly split is wide on this route: Apr 2025 posted the strongest performance at 90% on-time, while Jul 2025 came in at just 68% - a 22-point swing worth factoring into travel timing.

On the multi-year calendar, SFO–GEG peaks in September at 89.4% on-time while June carries the heaviest traffic (~83 flights per month) ; the softest month is December at 78.2%, a 11.2-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does SFO to GEG rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, SFO to GEG ranks #2783 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 SFO to GEG? ▼
Flights from San Francisco to Spokane have a 84.6% on-time rate based on 4,271 flights. The average delay is 70.3 minutes. The best recent month was Apr 2025 with 90% on-time.
What is the cancellation rate for SFO to GEG? ▼
Over the last 24 months, 0.7% of flights on this route were cancelled (11 of 1,488 flights) and 0.1% were diverted.
How far is the flight from SFO to GEG? ▼
The flight distance from San Francisco (SFO) to Spokane (GEG) is approximately 733 miles. This route is served by 7 carriers.
When is the best time to fly from SFO to GEG? ▼
The best recent month for on-time performance was Apr 2025 (90% on-time). The worst was Jul 2025 (68% on-time). Consider booking during months with historically better performance.

Airports on this route

SFO Airport

San Francisco
GEG Airport

Spokane
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 SFO–GEG data

SFO–GEG runs 5.6 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare SFO and GEG airport profiles: delay causes and top routes differ even on the same corridor. SFO airport
  • If your dates flex, September (89.4% on-time) beats December (78.2%) on this corridor. Seasonal chart
  • 4 other routes post a similar 84.6% 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.