Seattle (SEA) – San Jose (SJC)
- Distance
- 1,121 km
- 696 mi · 605 nm
- Flight time
- 2 h 11 min / 2 h 13 min
- Average gate to gate: SEA → SJC / back
- Time difference
- none
- CO2 per passenger
- 141 kg
- One way, economy, incl. RF (83 kg CO2 only)
- Passengers / year
- 925,052
- Aug 2025 – Jul 2026 · −4.2%
- Flights / week
- 170
- Both directions, average
- Seats filled
- 80%
- 1,162,526 seats a year
- Airlines nonstop
- 4
- AS, WN, OO
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 SEA
- 178°
- Heading from SJC
- 359°
- Halfway point
- 42.41, -122.10
- Great-circle km
- 1,122 km (sphere, for EU261)
- In the air SEA → SJC
- 1 h 45 min
- In the air SJC → SEA
- 1 h 45 min
- Clocks
- Same time in both
The estimate for a route without real times is 2 h 5 min; how it is worked out is on Sources.
Show as a table
| Month | Passengers |
|---|---|
| Aug 2025 | 92,631 |
| Sep 2025 | 77,785 |
| Oct 2025 | 74,095 |
| Nov 2025 | 72,302 |
| Dec 2025 | 72,269 |
| Jan 2026 | 62,543 |
| Feb 2026 | 70,256 |
| Mar 2026 | 68,899 |
| Apr 2026 | 63,962 |
| May 2026 | 77,618 |
| Jun 2026 | 93,099 |
| Jul 2026 | 99,593 |
Show as a table
| Month | Flights |
|---|---|
| Aug 2025 | 793 |
| Sep 2025 | 742 |
| Oct 2025 | 785 |
| Nov 2025 | 750 |
| Dec 2025 | 706 |
| Jan 2026 | 663 |
| Feb 2026 | 681 |
| Mar 2026 | 649 |
| Apr 2026 | 609 |
| May 2026 | 749 |
| Jun 2026 | 820 |
| Jul 2026 | 875 |
Airlines flying SEA–SJC nonstop
| Airline | Flights / week | Share of passengers |
|---|---|---|
| ASAlaska Airlines | 72 | 55% |
| WNSouthwest Airlines | 35 | 23% |
| OOSkyWest Airlines | 61 | 21% |
| QXHorizon Air | 1.6 | 1% |
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 · 3,275 flights
- Boeing 737-900ER · 1,304 flights
- Boeing B737 Max 900 · 1,245 flights
- Boeing 737-800 · 1,197 flights
- Boeing 737-700/700LR/Max 7 · 1,088 flights
- Boeing B737 Max 800 · 702 flights
- Boeing 737-900 · 4 flights
- Airbus Industrie A321-200n · 4 flights
Also carried: 245 tonnes of freight and 0 tonnes of mail a year (passenger and cargo flights).
Punctuality
- On time
- 82.3%
- Arrived within 15 min of schedule
- Average delay
- 10 min
- Late arrivals count, early ones as 0
- Cancelled
- 0.6%
- Flights counted
- 8,765
- Aug 2025 – Jul 2026
| Airline | On time | Average delay |
|---|---|---|
| ASAlaska Airlines | 81.3% | 10 min |
| OOSkyWest Airlines | 87.9% | 8 min |
| WNSouthwest Airlines | 74.7% | 12 min |
Delay minutes by cause: airline 39% · aircraft arriving late 34% · air traffic system 18% · weather 9% · 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
- $230
- One way, all cabins
- Average over a year
- $207
- Q2 2025 – Q1 2026
- Largest airline
- Alaska Airlines
- 61% of passengers · $229
- Lowest-fare airline
- Southwest Airlines
- 18% of passengers · $188
History, not a price to book: what the average passenger paid per one-way trip in each quarter (Q2 2025 $198 · Q3 2025 $199 · Q4 2025 $204 · Q1 2026 $230).
Fare outlook, Q1 2027: about $235, likely $208–$267
The average fare paid we expect a year after Q1 2026, the newest DOT quarter. On this route, past forecasts made this way fell inside the range 86% of the time over 21 quarters (median error 4.6%). An estimate from US DOT data: not a price you can book, not a guarantee, not advice on when to buy. How the outlook works
Cheapest quarter on this route: Q1, typically 4% below the year's average (9 years of DOT data, without 2020–21).
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: 1,122 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 Seattle and San Jose
Kilometres. Linked numbers have a page of their own. All Seattle airports
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 |