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1,351 km · Domestic

Ontario (ONT) – Portland (PDX)

In July 2026, 79 flights operated between Ontario and Portland (both directions), and 88.6% 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
January167122▼ 26.9%
February11193▼ 16.2%
March10977▼ 29.4%
April8369▼ 16.9%
May1275▲ 525.0%
June46103▲ 123.9%
July5279▲ 51.9%
August79––
September121––
October85–in progress
November132––
December89––
Year to date (Jan–Jul)580618▲ 6.6%

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
January88.6%83.6%▼ 5.6%
February89.2%84.9%▼ 4.8%
March98.2%80.5%▼ 18.0%
April94.0%85.5%▼ 9.0%
May75.0%90.7%▲ 20.9%
June80.4%90.3%▲ 12.3%
July80.8%88.6%▲ 9.7%
August77.2%––
September89.3%––
October89.4%–in progress
November90.2%––
December78.7%––
Year-to-date average (Jan–Jul)86.6%86.3%▼ 0.3%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January50▼ 100.0%
February60▼ 100.0%
March00–
April01–
May00–
June00–
July02–
August0––
September0––
October2–in progress
November2––
December0––
Year to date (Jan–Jul)113▼ 72.7%

Airlines on this route

  1. Alaska Airlines 62.4%
  2. SkyWest Airlines 20.3%
  3. Frontier Airlines 16.8%
  4. Southwest Airlines 0.5%

Oct 1, 2024 – Jul 31, 2026

By direction

ONT → PDX

Scheduled flights
1,015
Flights operated
1,005
Cancelled
10 · 1.0%
On-time departures
88.9%

PDX → ONT

Scheduled flights
1,015
Flights operated
1,006
Cancelled
9 · 0.9%
On-time departures
85.1%

ONT → PDX and PDX → ONT counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Alaska Airlines AS 1,266 62.4% 87.4% 13
SkyWest Airlines OO 412 20.3% 91.9% 5
Frontier Airlines F9 342 16.8% 79.5% 1
Southwest Airlines WN 10 0.5% 90.0% 0

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 delay07:00–08:00-2.3min · 455 recorded · 449 measured
Gap to highest-delay hour10.3min07:00 ↔ 14:00
Recorded flights2,030ONT–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 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 24 recorded · 24 measured · Source: the US BTS 07:00 · 94.9% · 455 recorded · 449 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 144 recorded · 142 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 17 recorded · 17 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 134 recorded · 133 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 152 recorded · 151 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 42 recorded · 42 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 11 recorded · 11 measured · Source: the US BTS 14:00 · 81.5% · 229 recorded · 227 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 52 recorded · 52 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 44 recorded · 44 measured · Source: the US BTS 17:00 · 87.0% · 240 recorded · 239 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 107 recorded · 105 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 113 recorded · 112 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 40 recorded · 40 measured · Source: the US BTS 21:00 · 80.3% · 226 recorded · 223 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 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 24 recorded · 24 measured · Source: the US BTS 07:00 · -2.3 min · 455 recorded · 449 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 144 recorded · 142 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 17 recorded · 17 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 134 recorded · 133 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 152 recorded · 151 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 42 recorded · 42 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 11 recorded · 11 measured · Source: the US BTS 14:00 · 8.0 min · 229 recorded · 227 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 52 recorded · 52 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 44 recorded · 44 measured · Source: the US BTS 17:00 · 4.4 min · 240 recorded · 239 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 107 recorded · 105 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 113 recorded · 112 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 40 recorded · 40 measured · Source: the US BTS 21:00 · 4.3 min · 226 recorded · 223 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 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · 24 · 24 recorded · 24 measured · Source: the US BTS 07:00 · 455 · 455 recorded · 449 measured · Source: the US BTS 08:00 · 144 · 144 recorded · 142 measured · Source: the US BTS 09:00 · 17 · 17 recorded · 17 measured · Source: the US BTS 10:00 · 134 · 134 recorded · 133 measured · Source: the US BTS 11:00 · 152 · 152 recorded · 151 measured · Source: the US BTS 12:00 · 42 · 42 recorded · 42 measured · Source: the US BTS 13:00 · 11 · 11 recorded · 11 measured · Source: the US BTS 14:00 · 229 · 229 recorded · 227 measured · Source: the US BTS 15:00 · 52 · 52 recorded · 52 measured · Source: the US BTS 16:00 · 44 · 44 recorded · 44 measured · Source: the US BTS 17:00 · 240 · 240 recorded · 239 measured · Source: the US BTS 18:00 · 107 · 107 recorded · 105 measured · Source: the US BTS 19:00 · 113 · 113 recorded · 112 measured · Source: the US BTS 20:00 · 40 · 40 recorded · 40 measured · Source: the US BTS 21:00 · 226 · 226 recorded · 223 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.

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———
05:00No observations———
06:00Fewer than 200 measured departures—2424
07:0094.9%-2.3 min449455
08:00Fewer than 200 measured departures—142144
09:00Fewer than 200 measured departures—1717
10:00Fewer than 200 measured departures—133134
11:00Fewer than 200 measured departures—151152
12:00Fewer than 200 measured departures—4242
13:00Fewer than 200 measured departures—1111
14:0081.5%8.0 min227229
15:00Fewer than 200 measured departures—5252
16:00Fewer than 200 measured departures—4444
17:0087.0%4.4 min239240
18:00Fewer than 200 measured departures—105107
19:00Fewer than 200 measured departures—112113
20:00Fewer than 200 measured departures—4040
21:0080.3%4.3 min223226
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 · 87.4% · 366 recorded · 364 measured · Source: the US BTS Tuesday · 90.0% · 213 recorded · 209 measured · Source: the US BTS Wednesday · 91.1% · 216 recorded · 214 measured · Source: the US BTS Thursday · 82.9% · 303 recorded · 299 measured · Source: the US BTS Friday · 84.8% · 357 recorded · 354 measured · Source: the US BTS Saturday · 88.9% · 244 recorded · 243 measured · Source: the US BTS Sunday · 86.6% · 331 recorded · 328 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 · 2.0 min · 366 recorded · 364 measured · Source: the US BTS Tuesday · -1.2 min · 213 recorded · 209 measured · Source: the US BTS Wednesday · 0.2 min · 216 recorded · 214 measured · Source: the US BTS Thursday · 7.0 min · 303 recorded · 299 measured · Source: the US BTS Friday · 4.4 min · 357 recorded · 354 measured · Source: the US BTS Saturday · 3.4 min · 244 recorded · 243 measured · Source: the US BTS Sunday · 3.6 min · 331 recorded · 328 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 · 366 · 366 recorded · 364 measured · Source: the US BTS Tuesday · 213 · 213 recorded · 209 measured · Source: the US BTS Wednesday · 216 · 216 recorded · 214 measured · Source: the US BTS Thursday · 303 · 303 recorded · 299 measured · Source: the US BTS Friday · 357 · 357 recorded · 354 measured · Source: the US BTS Saturday · 244 · 244 recorded · 243 measured · Source: the US BTS Sunday · 331 · 331 recorded · 328 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday87.4%2.0 min364366
Tuesday90.0%-1.2 min209213
Wednesday91.1%0.2 min214216
Thursday82.9%7.0 min299303
Friday84.8%4.4 min354357
Saturday88.9%3.4 min243244
Sunday86.6%3.6 min328331

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 · 86.5% · 294 recorded · 289 measured · Source: the US BTS Feb · 87.3% · 210 recorded · 204 measured · Source: the US BTS Mar · Fewer than 200 measured departures · 186 recorded · 186 measured · Source: the US BTS Apr · Fewer than 200 measured departures · 153 recorded · 152 measured · Source: the US BTS May · Fewer than 200 measured departures · 87 recorded · 87 measured · Source: the US BTS Jun · Fewer than 200 measured departures · 149 recorded · 149 measured · Source: the US BTS Jul · Fewer than 200 measured departures · 133 recorded · 131 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 79 recorded · 79 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 121 recorded · 121 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 175 recorded · 173 measured · Source: the US BTS Nov · 89.9% · 250 recorded · 247 measured · Source: the US BTS Dec · Fewer than 200 measured departures · 193 recorded · 193 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
Jan · 6.1 min · 294 recorded · 289 measured · Source: the US BTS Feb · 1.2 min · 210 recorded · 204 measured · Source: the US BTS Mar · Fewer than 200 measured departures · 186 recorded · 186 measured · Source: the US BTS Apr · Fewer than 200 measured departures · 153 recorded · 152 measured · Source: the US BTS May · Fewer than 200 measured departures · 87 recorded · 87 measured · Source: the US BTS Jun · Fewer than 200 measured departures · 149 recorded · 149 measured · Source: the US BTS Jul · Fewer than 200 measured departures · 133 recorded · 131 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 79 recorded · 79 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 121 recorded · 121 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 175 recorded · 173 measured · Source: the US BTS Nov · 0.8 min · 250 recorded · 247 measured · Source: the US BTS Dec · Fewer than 200 measured departures · 193 recorded · 193 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 · 294 · 294 recorded · 289 measured · Source: the US BTS Feb · 210 · 210 recorded · 204 measured · Source: the US BTS Mar · 186 · 186 recorded · 186 measured · Source: the US BTS Apr · 153 · 153 recorded · 152 measured · Source: the US BTS May · 87 · 87 recorded · 87 measured · Source: the US BTS Jun · 149 · 149 recorded · 149 measured · Source: the US BTS Jul · 133 · 133 recorded · 131 measured · Source: the US BTS Aug · 79 · 79 recorded · 79 measured · Source: the US BTS Sep · 121 · 121 recorded · 121 measured · Source: the US BTS Oct · 175 · 175 recorded · 173 measured · Source: the US BTS Nov · 250 · 250 recorded · 247 measured · Source: the US BTS Dec · 193 · 193 recorded · 193 measured · Source: the US BTS

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

View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan86.5%6.1 min289294
Feb87.3%1.2 min204210
MarFewer than 200 measured departures—186186
AprFewer than 200 measured departures—152153
MayFewer than 200 measured departures—8787
JunFewer than 200 measured departures—149149
JulFewer than 200 measured departures—131133
AugFewer than 200 measured departures—7979
SepFewer than 200 measured departures—121121
OctFewer than 200 measured departures—173175
Nov89.9%0.8 min247250
DecFewer than 200 measured departures—193193

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 86.2% 1,749
  • Delayed >15 min 12.9% 262
  • Cancelled 0.9% 19
  • 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

21
21 of 21
Flight numbersBy direction DeparturesOn time
AS544 ONT → PDX 189 92.0%
F993336 PDX → ONT 171 81.9%
F993335 ONT → PDX 167 76.5%
AS1066 PDX → ONT 152 88.5%
AS97 PDX → ONT 152 78.3%
AS1058 ONT → PDX 116 98.2%
OO3312 PDX → ONT 106 96.2%
OO3312 ONT → PDX 106 95.2%
AS340 PDX → ONT 65 73.9%
AS1066 ONT → PDX 59 78.0%
AS125 PDX → ONT 59 81.4%
AS341 ONT → PDX 56 89.3%
AS565 PDX → ONT 56 82.1%
AS1699 ONT → PDX 52 92.2%
AS1449 PDX → ONT 51 90.0%
OO3217 PDX → ONT 45 82.2%
OO3217 ONT → PDX 45 88.9%
AS123 ONT → PDX 38 97.4%
OO3498 ONT → PDX 38 89.2%
OO3498 PDX → ONT 38 89.2%
AS345 ONT → PDX 31 100.0%

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 79 +51.9% 2 88.6%
June 2026 103 +123.9% 0 90.3%
May 2026 75 +525.0% 0 90.7%
April 2026 69 −16.9% 1 85.5%
March 2026 77 −29.4% 0 80.5%
February 2026 93 −16.2% 0 84.9%
January 2026 122 −26.9% 0 83.6%
December 2025 89 −14.4% 0 78.7%
November 2025 132 +14.8% 2 90.2%
October 2025 85 −3.4% 2 89.4%
September 2025 121 0 89.3%
August 2025 79 0 77.2%
July 2025 52 0 80.8%
June 2025 46 0 80.4%
May 2025 12 0 75.0%
April 2025 83 0 94.0%
March 2025 109 0 98.2%
February 2025 111 6 89.2%
January 2025 167 5 88.6%
December 2024 104 0 85.6%
November 2024 115 1 89.6%
October 2024 88 0 79.5%

How to read this chart

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