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553 km · Domestic

Boise Air Terminal/Gowen Field (BOI) – Portland (PDX)

In July 2026, 116 flights operated between Boise Air Terminal/Gowen Field and Portland (both directions), and 82.8% left on time, according to the US BTS.

Official · July 2026 according to the US BTS only airlines required to report on-time data to the US DOT

Flights per month

Only complete months are shown. A month appears once the source has published every day of it.

The most recent periods19 periods
PeriodFlights operated 2025Flights operated 2026Change vs last year
January206200▼ 2.9%
February191180▼ 5.8%
March200158▼ 21.0%
April162114▼ 29.6%
May174150▼ 13.8%
June166114▼ 31.3%
July147116▼ 21.1%
August173––
September210––
October206–in progress
November178––
December180––
Year to date (Jan–Jul)1,2461,032▼ 17.2%

On-time departures by month

Departures within 15 minutes of schedule.

The most recent periods19 periods
PeriodOn-time departures 2025On-time departures 2026Change vs last year
January85.4%90.5%▲ 6.0%
February84.3%88.9%▲ 5.5%
March83.0%88.6%▲ 6.7%
April95.7%92.1%▼ 3.8%
May96.0%82.7%▼ 13.9%
June89.2%85.1%▼ 4.6%
July89.8%82.8%▼ 7.8%
August91.9%––
September94.3%––
October92.7%–in progress
November89.9%––
December85.0%––
Year-to-date average (Jan–Jul)89.1%87.2%▼ 2.0%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January00–
February50▼ 100.0%
March00–
April00–
May02–
June00–
July00–
August0––
September0––
October2–in progress
November9––
December0––
Year to date (Jan–Jul)52▼ 60.0%

Airlines on this route

  1. SkyWest Airlines 58.0%
  2. Alaska Airlines 42.0%

Oct 1, 2024 – Jul 31, 2026

By direction

BOI → PDX

Scheduled flights
2,004
Flights operated
1,993
Cancelled
11 · 0.5%
On-time departures
90.5%

PDX → BOI

Scheduled flights
1,750
Flights operated
1,740
Cancelled
10 · 0.6%
On-time departures
86.8%

BOI → PDX and PDX → BOI counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
SkyWest Airlines OO 2,177 58.0% 89.7% 18
Alaska Airlines AS 1,577 42.0% 87.5% 3

Shares are of scheduled flights in the period shown. Codeshare flights are counted once, under the operating airline.

Flight timing & delays

Historical departures, grouped by the scheduled local time at the departure airport. These are recorded outcomes, not a forecast for your flight.

Times are local to the departure airport of each flight; both directions are combined.

US domestic sectors recorded by BTS

Source: the US BTS · Oct 12, 2024 → Jul 31, 2026

Lowest average delay09:00–10:00-3.1min · 286 recorded · 286 measured
Gap to highest-delay hour10.5min09:00 ↔ 17:00
Recorded flights3,754BOI–PDX

Departure hour

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · 96.0% · 277 recorded · 277 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 124 recorded · 123 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 158 recorded · 155 measured · Source: the US BTS 08:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 09:00 · 95.5% · 286 recorded · 286 measured · Source: the US BTS 10:00 · 91.6% · 435 recorded · 430 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · 85.5% · 220 recorded · 220 measured · Source: the US BTS 13:00 · 90.2% · 270 recorded · 265 measured · Source: the US BTS 14:00 · 85.7% · 637 recorded · 636 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 62 recorded · 62 measured · Source: the US BTS 16:00 · 83.9% · 410 recorded · 410 measured · Source: the US BTS 17:00 · 83.5% · 245 recorded · 243 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 20 recorded · 19 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 99 recorded · 99 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 48 recorded · 48 measured · Source: the US BTS 21:00 · 84.1% · 463 recorded · 460 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · 0.1 min · 277 recorded · 277 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 124 recorded · 123 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 158 recorded · 155 measured · Source: the US BTS 08:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 09:00 · -3.1 min · 286 recorded · 286 measured · Source: the US BTS 10:00 · 1.4 min · 435 recorded · 430 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · 5.0 min · 220 recorded · 220 measured · Source: the US BTS 13:00 · 1.5 min · 270 recorded · 265 measured · Source: the US BTS 14:00 · 4.5 min · 637 recorded · 636 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 62 recorded · 62 measured · Source: the US BTS 16:00 · 5.1 min · 410 recorded · 410 measured · Source: the US BTS 17:00 · 7.4 min · 245 recorded · 243 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 20 recorded · 19 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 99 recorded · 99 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 48 recorded · 48 measured · Source: the US BTS 21:00 · 5.2 min · 463 recorded · 460 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · 277 · 277 recorded · 277 measured · Source: the US BTS 06:00 · 124 · 124 recorded · 123 measured · Source: the US BTS 07:00 · 158 · 158 recorded · 155 measured · Source: the US BTS 08:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 09:00 · 286 · 286 recorded · 286 measured · Source: the US BTS 10:00 · 435 · 435 recorded · 430 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · 220 · 220 recorded · 220 measured · Source: the US BTS 13:00 · 270 · 270 recorded · 265 measured · Source: the US BTS 14:00 · 637 · 637 recorded · 636 measured · Source: the US BTS 15:00 · 62 · 62 recorded · 62 measured · Source: the US BTS 16:00 · 410 · 410 recorded · 410 measured · Source: the US BTS 17:00 · 245 · 245 recorded · 243 measured · Source: the US BTS 18:00 · 20 · 20 recorded · 19 measured · Source: the US BTS 19:00 · 99 · 99 recorded · 99 measured · Source: the US BTS 20:00 · 48 · 48 recorded · 48 measured · Source: the US BTS 21:00 · 463 · 463 recorded · 460 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

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View the figures
Departure hourOn-time departuresAverage departure delayWith departure timeRecorded flights
00:00No observations———
01:00No observations———
02:00No observations———
03:00No observations———
04:00No observations———
05:0096.0%0.1 min277277
06:00Fewer than 200 measured departures—123124
07:00Fewer than 200 measured departures—155158
08:00No observations———
09:0095.5%-3.1 min286286
10:0091.6%1.4 min430435
11:00No observations———
12:0085.5%5.0 min220220
13:0090.2%1.5 min265270
14:0085.7%4.5 min636637
15:00Fewer than 200 measured departures—6262
16:0083.9%5.1 min410410
17:0083.5%7.4 min243245
18:00Fewer than 200 measured departures—1920
19:00Fewer than 200 measured departures—9999
20:00Fewer than 200 measured departures—4848
21:0084.1%5.2 min460463
22:00No observations———
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 88.7% · 577 recorded · 577 measured · Source: the US BTS Tuesday · 92.9% · 512 recorded · 508 measured · Source: the US BTS Wednesday · 91.4% · 515 recorded · 514 measured · Source: the US BTS Thursday · 86.5% · 569 recorded · 562 measured · Source: the US BTS Friday · 84.2% · 570 recorded · 569 measured · Source: the US BTS Saturday · 91.2% · 449 recorded · 443 measured · Source: the US BTS Sunday · 87.7% · 562 recorded · 560 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Monday · 2.5 min · 577 recorded · 577 measured · Source: the US BTS Tuesday · -1.2 min · 512 recorded · 508 measured · Source: the US BTS Wednesday · -0.1 min · 515 recorded · 514 measured · Source: the US BTS Thursday · 2.2 min · 569 recorded · 562 measured · Source: the US BTS Friday · 6.2 min · 570 recorded · 569 measured · Source: the US BTS Saturday · 1.8 min · 449 recorded · 443 measured · Source: the US BTS Sunday · 4.8 min · 562 recorded · 560 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Monday · 577 · 577 recorded · 577 measured · Source: the US BTS Tuesday · 512 · 512 recorded · 508 measured · Source: the US BTS Wednesday · 515 · 515 recorded · 514 measured · Source: the US BTS Thursday · 569 · 569 recorded · 562 measured · Source: the US BTS Friday · 570 · 570 recorded · 569 measured · Source: the US BTS Saturday · 449 · 449 recorded · 443 measured · Source: the US BTS Sunday · 562 · 562 recorded · 560 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday88.7%2.5 min577577
Tuesday92.9%-1.2 min508512
Wednesday91.4%-0.1 min514515
Thursday86.5%2.2 min562569
Friday84.2%6.2 min569570
Saturday91.2%1.8 min443449
Sunday87.7%4.8 min560562

Month of year

Months combine the same calendar month across the years shown; this is a seasonal pattern, not a monthly time series.

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Jan · 87.9% · 406 recorded · 406 measured · Source: the US BTS Feb · 86.5% · 376 recorded · 371 measured · Source: the US BTS Mar · 85.5% · 358 recorded · 358 measured · Source: the US BTS Apr · 94.2% · 276 recorded · 276 measured · Source: the US BTS May · 89.8% · 326 recorded · 324 measured · Source: the US BTS Jun · 87.5% · 280 recorded · 280 measured · Source: the US BTS Jul · 86.7% · 263 recorded · 263 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 173 recorded · 173 measured · Source: the US BTS Sep · 94.3% · 210 recorded · 210 measured · Source: the US BTS Oct · 90.9% · 321 recorded · 319 measured · Source: the US BTS Nov · 90.6% · 381 recorded · 371 measured · Source: the US BTS Dec · 84.6% · 384 recorded · 382 measured · Source: the US BTS

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Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Jan · 4.3 min · 406 recorded · 406 measured · Source: the US BTS Feb · 4.4 min · 376 recorded · 371 measured · Source: the US BTS Mar · 8.2 min · 358 recorded · 358 measured · Source: the US BTS Apr · -1.9 min · 276 recorded · 276 measured · Source: the US BTS May · 0.1 min · 326 recorded · 324 measured · Source: the US BTS Jun · 2.3 min · 280 recorded · 280 measured · Source: the US BTS Jul · 3.6 min · 263 recorded · 263 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 173 recorded · 173 measured · Source: the US BTS Sep · -3.0 min · 210 recorded · 210 measured · Source: the US BTS Oct · -0.1 min · 321 recorded · 319 measured · Source: the US BTS Nov · 1.3 min · 381 recorded · 371 measured · Source: the US BTS Dec · 5.4 min · 384 recorded · 382 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Jan · 406 · 406 recorded · 406 measured · Source: the US BTS Feb · 376 · 376 recorded · 371 measured · Source: the US BTS Mar · 358 · 358 recorded · 358 measured · Source: the US BTS Apr · 276 · 276 recorded · 276 measured · Source: the US BTS May · 326 · 326 recorded · 324 measured · Source: the US BTS Jun · 280 · 280 recorded · 280 measured · Source: the US BTS Jul · 263 · 263 recorded · 263 measured · Source: the US BTS Aug · 173 · 173 recorded · 173 measured · Source: the US BTS Sep · 210 · 210 recorded · 210 measured · Source: the US BTS Oct · 321 · 321 recorded · 319 measured · Source: the US BTS Nov · 381 · 381 recorded · 371 measured · Source: the US BTS Dec · 384 · 384 recorded · 382 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan87.9%4.3 min406406
Feb86.5%4.4 min371376
Mar85.5%8.2 min358358
Apr94.2%-1.9 min276276
May89.8%0.1 min324326
Jun87.5%2.3 min280280
Jul86.7%3.6 min263263
AugFewer than 200 measured departures—173173
Sep94.3%-3.0 min210210
Oct90.9%-0.1 min319321
Nov90.6%1.3 min371381
Dec84.6%5.4 min382384

Delay and on-time rates need at least 200 measured departures per bucket. Smaller samples remain visible in the flight-count chart. An empty slot means no observations, not zero flights.

Recorded outcomes

  • On time 88.3% 3,314
  • Delayed >15 min 11.2% 419
  • Cancelled 0.6% 21
  • Missing departure time 0.0% 0

All recorded flights with a known scheduled local time, counted once. Missing actual times are shown separately.

On time means departing no more than 15 minutes after schedule. Cancelled flights and flights missing departure times are excluded from the on-time rate and average delay.

Flight numbers on this route

38
38 of 38
Flight numbersBy direction DeparturesOn time
OO3465 BOI → PDX 215 97.6%
AS342 PDX → BOI 204 83.3%
OO3328 PDX → BOI 182 84.0%
OO3358 BOI → PDX 180 95.0%
AS229 BOI → PDX 175 85.1%
AS447 PDX → BOI 172 83.0%
OO3494 BOI → PDX 157 81.3%
AS782 BOI → PDX 140 95.0%
AS946 PDX → BOI 122 85.3%
AS947 BOI → PDX 122 82.8%
OO3210 BOI → PDX 114 92.1%
OO3285 PDX → BOI 114 96.5%
OO3486 BOI → PDX 105 88.1%
OO3486 PDX → BOI 83 89.2%
AS1120 BOI → PDX 67 100.0%
AS996 PDX → BOI 67 92.4%
OO3378 PDX → BOI 60 86.4%
OO3490 PDX → BOI 59 83.1%
OO3289 PDX → BOI 57 93.0%
OO3495 BOI → PDX 56 92.9%
AS564 BOI → PDX 55 81.8%
AS1524 PDX → BOI 52 71.2%
AS1566 BOI → PDX 52 94.2%
OO3491 PDX → BOI 49 83.7%
AS343 BOI → PDX 43 90.7%
OO3024 PDX → BOI 41 94.6%
OO3378 BOI → PDX 41 90.2%
OO3481 PDX → BOI 38 81.6%
OO3485 BOI → PDX 38 84.2%
AS281 PDX → BOI 36 80.6%
AS362 BOI → PDX 35 88.6%
OO3274 BOI → PDX 35 97.1%
OO3275 PDX → BOI 35 91.4%
AS612 PDX → BOI 34 88.2%
OO3003 PDX → BOI 34 88.2%
OO3004 BOI → PDX 34 88.2%
OO3499 BOI → PDX 34 94.1%
AS113 PDX → BOI 31 96.8%

Flight numbers are the codes sold on tickets. On shared flights one aircraft can carry several of them. Only numbers with at least 30 flights have a page.

Monthly figures
PeriodFlights operated Change vs last yearCancelled On-time departures
July 2026 116 −21.1% 0 82.8%
June 2026 114 −31.3% 0 85.1%
May 2026 150 −13.8% 2 82.7%
April 2026 114 −29.6% 0 92.1%
March 2026 158 −21.0% 0 88.6%
February 2026 180 −5.8% 0 88.9%
January 2026 200 −2.9% 0 90.5%
December 2025 180 −10.9% 0 85.0%
November 2025 178 −7.8% 9 89.9%
October 2025 206 +82.3% 2 92.7%
September 2025 210 0 94.3%
August 2025 173 0 91.9%
July 2025 147 0 89.8%
June 2025 166 0 89.2%
May 2025 174 0 96.0%
April 2025 162 0 95.7%
March 2025 200 0 83.0%
February 2025 191 5 84.3%
January 2025 206 0 85.4%
December 2024 202 2 84.2%
November 2024 193 1 91.2%
October 2024 113 0 87.6%

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