Airport month record

PDXJUL

Portland International in July 2025

Departures: 5,864
Month: July 2025
National, same month: 71.1%
Carriers: 11

Historical statistics for July 2025, not live status or a forecast for this year’s July. For today’s conditions at PDX, see live FAA status.

PDX in July sits in the middle of the pack with a B. Close to three flights in four arrive on time by the DOT's definition, 5 points better than the national rate of 71.1%. The late ones land about an hour behind schedule. That rests on 5,864 flights, of which SkyWest Airlines flew 1,002 at 81.9% on time.

SkyWest Airlines is the most reliable of the six carriers covered here at 81.9% on time across 1,002 flights.

On time

75.7%

Arrivals under 15 minutes late, of 5,764 completed departures

Avg delay

65 min

Across delayed arrivals only, not all flights

Cancelled

1.18%

Nationally in July: 2.45%

Whole year

82.6%

PDX across all twelve months

These figures cover 5,864 departures from Portland International in July 2025. On time means an arrival less than 15 minutes after the scheduled gate time, the DOT's threshold, and the national comparison uses every US departure in the same month rather than the whole year.

Against the year

July next to PDX's other months

Against PDX's own year, July ran 7 points worse than the twelve-month rate of 82.6%, which makes it the worst of the twelve months in the data. Cancellations are where July stands out: 1.18% of scheduled departures were called off, 1.5 times the airport's rate across the year.

PDX month by month
Month	Flights	On time	Avg delay	Cancelled	Grade
July 2025 (this page)	5,864	75.7%	65 min	1.18%	B
August 2025	5,685	80.9%	60 min	0.67%	B+
September 2025	5,269	83.7%	51 min	0.17%	B+
October 2025	5,493	82.1%	53 min	0.64%	B+
November 2025	4,976	84.2%	59 min	1.51%	B
December 2025	5,124	79.3%	59 min	0.60%	B+
January 2026	4,537	85.6%	66 min	1.41%	A
February 2026	4,182	86.3%	56 min	0.69%	A+
March 2026	5,113	86.3%	69 min	0.94%	A+
April 2026	5,040	86.1%	63 min	0.48%	A+
May 2026	5,535	83.9%	62 min	0.42%	B+
June 2026	6,024	80.3%	65 min	0.61%	B+

Departure window

The best time of day to leave PDX in July

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 16 points, against 15 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am1,255 flights85.6%
8am–11am960 flights78.5%
11am–2pm914 flights73.3%
2pm–5pm891 flights74.2%
5pm–8pm978 flights69.5%
8pm–5am866 flights69.2%

Scale runs 60% to 90%. Rows with fewer than 30 flights show a dash.

Book the early departure. Flights leaving between 5am–8am arrive on time 85.6% of the time, against 69.2% for the overnight window. That is 16 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5am–8am window is the busiest, with 1,255 flights scheduled in it.

Across the week, Saturday is the strongest day at 81.2% on time and Monday the weakest at 70.0%. 11 points is a smaller lever than departure hour, but it is free.

Carrier by carrier

Which airlines ran best at PDX in July

The choice of carrier is not cosmetic here. SkyWest Airlines arrives on time 81.9% of the time; Southwest Airlines manages 67.3%. Sample sizes sit next to every figure, because a two-point gap across 928 flights means less than a ten-point one.

Carriers at PDX in July 2025
Airline	Flights	On time	Avg delay	Cancelled	Grade
Alaska Airlines	1,706	77.7%	53 min	1.70%	B
SkyWest Airlines	1,002	81.9%	59 min	0.20%	B+
Southwest Airlines	928	67.3%	56 min	0.54%	C+
Delta Air Lines	740	81.0%	81 min	0.68%	B+
United Airlines	623	74.0%	69 min	0.96%	C+
American Airlines	444	71.0%	81 min	3.15%	C−
Frontier Airlinesthin sample	145	68.8%	99 min	4.83%	C−
Allegiant Airthin sample	98	70.1%	85 min	0.00%	C+
Hawaiian Airlinesthin sample	89	65.2%	59 min	0.00%	C+
Spirit Airlinesthin sample	58	87.9%	139 min	0.00%	A+
JetBlue Airwaysthin sample	31	43.3%	144 min	3.23%	F−

American Airlines cancels 3.1% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.

Route by route

Busiest routes out of PDX in July

Routes from PDX in July 2025
Route	Flights	On time	Avg delay	Cancelled	Grade
PDX to DEN · Denver	461	63.5%	60 min	1.30%	D
PDX to SEA · Seattle	423	75.9%	65 min	0.00%	B+
PDX to LAX · Los Angeles	409	87.7%	94 min	2.44%	A
PDX to SFO · San Franciscothin sample	316	78.6%	45 min	0.95%	B+
PDX to PHX · Phoenixthin sample	312	76.4%	77 min	0.96%	B+
PDX to LAS · Las Vegasthin sample	303	76.7%	68 min	0.66%	B+
PDX to ORD · Chicagothin sample	297	62.6%	70 min	1.68%	D
PDX to SLC · Salt Lake Citythin sample	247	79.4%	55 min	0.00%	B+
PDX to DFW · Dallas-Fort Worththin sample	230	74.9%	76 min	2.17%	C
PDX to SMF · Sacramentothin sample	215	78.5%	64 min	0.47%	B+
PDX to ATL · Atlantathin sample	178	75.4%	80 min	0.56%	B+
PDX to SAN · San Diegothin sample	157	83.2%	58 min	1.27%	B
PDX to MSP · Minneapolisthin sample	150	77.9%	60 min	0.00%	B+
PDX to SJC · San Josethin sample	136	76.5%	62 min	0.00%	B+
PDX to IAH · Houstonthin sample	123	77.3%	73 min	2.44%	B
PDX to SNA · Santa Anathin sample	119	90.5%	44 min	2.52%	A
PDX to OAK · Oaklandthin sample	119	60.3%	67 min	1.68%	D
PDX to FAT · Fresnothin sample	102	84.3%	83 min	0.00%	B+
PDX to ANC · Anchoragethin sample	93	68.8%	48 min	0.00%	C+
PDX to JFK · New Yorkthin sample	93	69.4%	77 min	7.53%	C−
PDX to EWR · Newarkthin sample	93	72.4%	83 min	4.30%	C−
PDX to BUR · Burbankthin sample	92	84.4%	39 min	2.17%	B
PDX to BOS · Bostonthin sample	92	69.2%	103 min	1.09%	C
PDX to HNL · Honoluluthin sample	89	65.2%	59 min	0.00%	C+
PDX to MDW · Chicagothin sample	88	78.8%	46 min	1.14%	B

Delay causes

What held PDX up in July

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 91,000 reported delay minutes.

Late-arriving aircraft
41%
Carrier
37%
National Airspace System
21%
Extreme weather
1%
Security
0%

41% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 91,000 reported delay minutes here, that single category outweighs weather by 41 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 91,211 reported delay minutes.

Cancellations sit at 1.18% against a national 2.45%, which is ordinary. Diversions add another 0.53%.

7.2% of arrivals land an hour or more late, close to the national 12.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.

What to do with this

Flying from PDX in July

For a July trip through PDX: plan on this being one of the airport's harder months. The 5am–8am departures held up best at 85.6% on time, and with 7.2% of arrivals an hour or more late, a connection here deserves more slack than the same trip in February would.

Portland International (PDX), the whole year
PDX in August80.9%
PDX in September83.7%
PDX in October82.1%
PDX in November84.2%
PDX in December79.3%
PDX in January85.6%
PDX in February86.3%
PDX in March86.3%
PDX in April86.1%
PDX in May83.9%
PDX in June80.3%

Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures