Portland (PDX) – Seattle (SEA)
- Distance
- 208 km
- 129 mi · 112 nm
- Flight time
- 1 h 2 min / 58 min
- Average gate to gate: PDX → SEA / back
- Time difference
- none
- CO2 per passenger
- 48 kg
- One way, economy, incl. RF (28 kg CO2 only)
- Passengers / year
- 958,180
- Aug 2025 – Jul 2026 · −12.1%
- Flights / week
- 253
- Both directions, average
- Seats filled
- 78%
- 1,235,075 seats a year
- Airlines nonstop
- 5
- OO, AS, QX
Traffic: U.S. DOT, Bureau of Transportation Statistics, T-100 Segment (all carriers, scheduled service), Aug 2025 – Jul 2026. Distance: WGS-84 ellipsoid. CO2: UK DESNZ 2026 factors. Sources
The way there
- Heading from PDX
- 6°
- Heading from SEA
- 186°
- Halfway point
- 46.52, -122.46
- Great-circle km
- 208 km (sphere, for EU261)
- In the air PDX → SEA
- 32 min
- In the air SEA → PDX
- 31 min
- Clocks
- Same time in both
The estimate for a route without real times is 1 h 5 min; how it is worked out is on Sources.
Show as a table
| Month | Passengers |
|---|---|
| Aug 2025 | 91,223 |
| Sep 2025 | 85,449 |
| Oct 2025 | 85,501 |
| Nov 2025 | 79,602 |
| Dec 2025 | 78,293 |
| Jan 2026 | 73,421 |
| Feb 2026 | 68,158 |
| Mar 2026 | 80,470 |
| Apr 2026 | 73,316 |
| May 2026 | 76,071 |
| Jun 2026 | 80,805 |
| Jul 2026 | 85,871 |
Show as a table
| Month | Flights |
|---|---|
| Aug 2025 | 1,279 |
| Sep 2025 | 1,166 |
| Oct 2025 | 1,155 |
| Nov 2025 | 1,040 |
| Dec 2025 | 1,042 |
| Jan 2026 | 977 |
| Feb 2026 | 879 |
| Mar 2026 | 1,064 |
| Apr 2026 | 1,099 |
| May 2026 | 1,127 |
| Jun 2026 | 1,140 |
| Jul 2026 | 1,209 |
Airlines flying PDX–SEA nonstop
| Airline | Flights / week | Share of passengers |
|---|---|---|
| OOSkyWest Airlines | 133 | 41% |
| ASAlaska Airlines | 45 | 31% |
| QXHorizon Air | 65 | 22% |
| DLDelta Air Lines | 11 | 5% |
| AAAmerican Airlines | 0.3 | 0% |
Both directions, Aug 2025 – Jul 2026. Airlines with at least one flight a month. U.S. DOT, Bureau of Transportation Statistics, T-100 Segment (all carriers, scheduled service). Sources
Aircraft on this route
- Embraer ERJ-175 · 10,261 flights
- Boeing 737-800 · 922 flights
- Boeing 737-900ER · 739 flights
- Boeing B737 Max 900 · 587 flights
- A200-100 BD-500-1A10 · 274 flights
- Boeing B737 Max 800 · 166 flights
- Boeing 737-700/700LR/Max 7 · 114 flights
- A220-300 BD-500-1A11 · 90 flights
Also carried: 344 tonnes of freight and 43 tonnes of mail a year (passenger and cargo flights).
Punctuality
- On time
- 84.3%
- Arrived within 15 min of schedule
- Average delay
- 9 min
- Late arrivals count, early ones as 0
- Cancelled
- 0.7%
- Flights counted
- 9,754
- Aug 2025 – Jul 2026
| Airline | On time | Average delay |
|---|---|---|
| OOSkyWest Airlines | 86% | 9 min |
| ASAlaska Airlines | 79.7% | 10 min |
| DLDelta Air Lines | 81.6% | 13 min |
Delay minutes by cause: airline 48% · aircraft arriving late 21% · air traffic system 17% · weather 14% · security 0%.
Both directions, Aug 2025 – Jul 2026. BTS Reporting Carrier On-Time Performance (US domestic flights of the larger US airlines). Sources
What passengers paid
- Average fare, Q1 2026
- $208
- One way, all cabins
- Average over a year
- $201
- Q3 2025 – Q1 2026
- Largest airline
- Alaska Airlines
- 77% of passengers · $208
- Lowest-fare airline
- Alaska Airlines
- 77% of passengers · $208
History, not a price to book: what the average passenger paid per one-way trip in each quarter (Q3 2025 $197 · Q4 2025 $199 · Q1 2026 $208).
U.S. DOT Consumer Airfare Report, Table 1a (airline ticket sample, US domestic airport pairs). Sources
Delay compensation (EU261 / UK261)
Measured by great-circle distance: 208 km.
Neither EU261 nor UK261 covers this route: it neither starts nor ends in the EU, EEA, Switzerland or the UK. Other countries have their own rules (for example Canada's APPR or Brazil's ANAC rules).
Also owed for a cancellation with less than 14 days' notice or denied boarding. Not owed for extraordinary circumstances. On a connection, the distance to the final destination counts. From 23 October 2027 the EU's Regulation 2026/2202 applies; it keeps these amounts (what changes in 2027). Information, not legal advice.
Every airport pair between Portland and Seattle
Kilometres. Linked numbers have a page of their own. All Seattle airports
More routes from PDX
More routes from SEA
| Route | Distance | Passengers / year |
|---|---|---|
| SEA → DEN | 1,648 km | 1,819,437 |
| SEA → PHX | 1,781 km | 1,813,338 |
| SEA → LAX | 1,535 km | 1,810,795 |
| SEA → ANC | 2,331 km | 1,694,688 |
| SEA → SFO | 1,092 km | 1,628,228 |
| SEA → ORD | 2,769 km | 1,622,991 |
| SEA → LAS | 1,394 km | 1,596,435 |
| SEA → DFW | 2,671 km | 1,577,921 |
| SEA → SAN | 1,690 km | 1,233,726 |
| SEA → SLC | 1,108 km | 1,106,553 |