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Route · PDX → GEG · 2020–2025 BTS data

Portland to Spokane

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), PDX to GEG (Portland to Spokane) ranks #2937 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

87.4%
On-time
+8.4 pts
vs US avg
59 min
Delay when late
3,906
Flights
#2937 of 4927
Corpus placement

Cancelled

0.9%

Best Month

Apr 2024 92%

Worst Month

May 2025 74%

Distance

279 mi

Carriers

8

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 113 21 2 0 AS,OO
Nov 2025 94 10 1 0 OO,AS
Oct 2025 88 16 1 0 AS,OO
Sep 2025 88 13 0 0 OO,AS
Aug 2025 72 7 0 0 OO,AS
Jul 2025 58 6 0 0 AS,OO
Jun 2025 68 17 0 0 AS,OO
May 2025 77 20 0 0 AS,OO
Apr 2025 35 3 0 0 OO
Feb 2025 36 3 1 0 OO
Jan 2025 49 3 0 0 OO
Dec 2024 31 4 0 0 OO
Oct 2024 31 8 0 0 OO
May 2024 54 8 0 0 OO
Apr 2024 59 5 0 0 OO
Mar 2024 40 8 0 0 OO
Feb 2024 30 6 0 0 OO
Jan 2024 50 8 6 0 OO
Dec 2023 44 9 0 1 OO
Nov 2023 78 10 0 0 OO
Oct 2023 54 8 0 1 OO
Jun 2023 60 11 0 1 OO
May 2023 64 12 0 0 OO
Feb 2023 32 9 1 0 AS,OO

PDX–GEG seasonal on-time pattern

Best: September (92.2%) · weakest: December (80.6%)

80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 80.6%

Strongest calendar month

September

92.2% on-time · ~90 flights/mo

Busiest calendar month

July

~104 flights/mo avg

Weakest calendar month

December

80.6% on-time · ~71 flights/mo

Cancellation Rate

0.9%

12 of 1,405 flights

Diversion Rate

0.2%

3 of 1,405 flights

Explore origin & destination

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

PDX - Portland

Full on-time, delay-cause, and seasonal performance for Portland, OR.

PDX 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 PDX and GEG side by side on delays, cancellations, and reliability.

Compare PDX vs GEG

Origin-hub reliability standing

Among PDX's stronger departures

PDX → GEG posts a 87.4% on-time rate, landing in the ≥85% band with 26 of 44 BTS-tracked routes leaving Portland. The same hub also shows 17 mid-band and 1 challenged departures · fleet-wide on-time rank #544 of 4927 (highest on-time = #1).

What the Data Says About PDX to GEG

Portland to Spokane (PDX to GEG) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 87.4% on-time rate across 3,906 flights, with delays that do happen averaging 58.9 minutes. The corridor runs roughly 279 miles and is served by 8 carriers. Over the most recent 24 months, 12 of 1,405 flights were cancelled (0.9%) and 3 diverted (0.2%).

The monthly split is wide on this route: Apr 2024 posted the strongest performance at 92% on-time, while May 2025 came in at just 74% - a 18-point swing worth factoring into travel timing.

On the multi-year calendar, PDX–GEG peaks in September at 92.2% on-time while July carries the heaviest traffic (~104 flights per month) ; the softest month is December at 80.6%, a 11.6-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does PDX to GEG rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, PDX to GEG ranks #2937 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 PDX to GEG? ▼
Flights from Portland to Spokane have a 87.4% on-time rate based on 3,906 flights. The average delay is 58.9 minutes. The best recent month was Apr 2024 with 92% on-time.
What is the cancellation rate for PDX to GEG? ▼
Over the last 24 months, 0.9% of flights on this route were cancelled (12 of 1,405 flights) and 0.2% were diverted.
How far is the flight from PDX to GEG? ▼
The flight distance from Portland (PDX) to Spokane (GEG) is approximately 279 miles. This route is served by 8 carriers.
When is the best time to fly from PDX to GEG? ▼
The best recent month for on-time performance was Apr 2024 (92% on-time). The worst was May 2025 (74% on-time). Consider booking during months with historically better performance.

Airports on this route

PDX Airport

Portland
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 PDX–GEG data

PDX–GEG runs 8.4 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare PDX and GEG airport profiles: delay causes and top routes differ even on the same corridor. PDX airport
  • If your dates flex, September (92.2% on-time) beats December (80.6%) on this corridor. Seasonal chart
  • 4 other routes post a similar 87.4% 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.