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Route · GEG → PDX · 2020–2025 BTS data

Spokane to Portland

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), GEG to PDX (Spokane to Portland) ranks #2935 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

88.1%
On-time
+9.1 pts
vs US avg
66 min
Delay when late
3,909
Flights
#2935 of 4927
Corpus placement

Cancelled

1.1%

Best Month

Nov 2025 95%

Worst Month

May 2025 81%

Distance

279 mi

Carriers

7

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 113 19 2 0 AS,OO
Nov 2025 94 5 1 0 OO,AS
Oct 2025 88 13 2 0 AS,OO
Sep 2025 88 8 0 0 OO,AS
Aug 2025 71 7 0 0 OO,AS
Jul 2025 58 11 0 0 AS,OO
Jun 2025 68 11 0 0 AS,OO
May 2025 77 15 0 0 AS,OO
Apr 2025 35 0 0 0 OO
Feb 2025 36 8 1 0 OO
Jan 2025 48 7 0 0 OO
Dec 2024 31 4 0 0 OO
Oct 2024 31 5 0 0 OO
May 2024 54 5 0 0 OO
Apr 2024 60 10 0 0 OO
Mar 2024 39 8 0 0 OO
Feb 2024 30 4 0 0 OO
Jan 2024 49 7 7 0 OO
Dec 2023 44 9 0 0 OO
Nov 2023 78 9 1 0 OO
Oct 2023 54 9 0 0 OO
Jun 2023 60 7 0 0 OO
May 2023 64 5 0 0 OO
Mar 2023 33 3 1 0 OO,AS

GEG–PDX seasonal on-time pattern

Best: September (95.1%) · weakest: December (77.2%)

75%80%85%90%95%100% JanFebMarAprMayJunJulAugSepOctNovDec 77.2%

Strongest calendar month

September

95.1% on-time · ~89 flights/mo

Busiest calendar month

August

~104 flights/mo avg

Weakest calendar month

December

77.2% on-time · ~71 flights/mo

Cancellation Rate

1.1%

15 of 1,403 flights

Diversion Rate

0.0%

0 of 1,403 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

PDX - Portland

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

PDX on-time profile

Compare the two airports

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

Compare GEG vs PDX

Origin-hub reliability standing

Among GEG's stronger departures

GEG → PDX posts a 88.1% on-time rate, landing in the ≥85% band with 12 of 18 BTS-tracked routes leaving Spokane. The same hub also shows 6 mid-band and 0 challenged departures · fleet-wide on-time rank #402 of 4927 (highest on-time = #1).

What the Data Says About GEG to PDX

Spokane to Portland (GEG to PDX) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 88.1% on-time rate across 3,909 flights, with delays that do happen averaging 65.7 minutes. The corridor runs roughly 279 miles and is served by 7 carriers. Over the most recent 24 months, 15 of 1,403 flights were cancelled (1.1%) and 0 diverted (0.0%).

Monthly performance varies moderately here: Nov 2025 was the strongest month at 95% on-time versus May 2025 at 81%, a 14-point difference.

On the multi-year calendar, GEG–PDX peaks in September at 95.1% on-time while August carries the heaviest traffic (~104 flights per month) ; the softest month is December at 77.2%, a 17.9-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does GEG to PDX rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, GEG to PDX ranks #2935 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 PDX? ▼
Flights from Spokane to Portland have a 88.1% on-time rate based on 3,909 flights. The average delay is 65.7 minutes. The best recent month was Nov 2025 with 95% on-time.
What is the cancellation rate for GEG to PDX? ▼
Over the last 24 months, 1.1% of flights on this route were cancelled (15 of 1,403 flights) and 0.0% were diverted.
How far is the flight from GEG to PDX? ▼
The flight distance from Spokane (GEG) to Portland (PDX) is approximately 279 miles. This route is served by 7 carriers.
When is the best time to fly from GEG to PDX? ▼
The best recent month for on-time performance was Nov 2025 (95% on-time). The worst was May 2025 (81% on-time). Consider booking during months with historically better performance.

Airports on this route

GEG Airport

Spokane
PDX Airport

Portland
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–PDX data

GEG–PDX runs 9.1 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 PDX airport profiles: delay causes and top routes differ even on the same corridor. GEG airport
  • If your dates flex, September (95.1% on-time) beats December (77.2%) on this corridor. Seasonal chart
  • 4 other routes post a similar 88.1% 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.