Flights San Jose → Seattle
As of August 2026, economy flights from San Jose to Seattle have a typical range USD 207–335, median USD 280. Full range across all 65 offers: USD 197–458. We found 31% of 65 offers from budget carriers (around USD 216) and 69% from full-service carriers (around USD 304).
Preview snapshot — prices change. Search for live results.
Data collected by LetsFG's multi-source price checks — every airline and the major booking sites checked for this route. How we collect data →
Best offers by airline: San Jose → Seattle
Based on 65 offers · August 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: San Jose → Seattle
Add-on pricing from the cheapest available offer per airline · August 2026 · USD
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| Delta Air Lines | Included | USD 35 | — |
| Southwest Airlines | Included | Included | — |
| Alaska Airlines | — | USD 35 | — |
Fees are estimates from the prices we checked and may not reflect your specific itinerary, booking class, or payment method. Run a live search for exact pricing.
How much do flights from San Jose to Seattle cost?
Based on 65 offers · August 2026
San Jose to Seattle flights ranged from USD 197 to USD 458 across 65 offers analyzed in August 2026. Two fare clusters detected: budget fares around 210 and premium fares around 314 The chart below shows how prices distributed across all 65 offers.
These 65 offers (August 2026) span multiple departure dates and booking windows — your travel dates may fall anywhere in this distribution. Only a live search shows where your specific trip lands.
50% of offers priced between USD 217 and USD 306
What hidden fees do San Jose to Seattle flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on San Jose to Seattle routes. The breakdown below is based on 65 offers analyzed in August 2026.
| Carrier | Avg fee (USD) | % of base fare |
|---|---|---|
| DL | 45 | 22% |
| WN | 0 | 0% |
| AS | 45 | 15% |
Delta Air Lines: base ~USD 162 + fees USD 45 = ~USD 207 total. Alaska Airlines: base ~USD 259 + fees USD 45 = ~USD 304 total.
Total costs diverge further when fees are added on this route. Always compare total cost, not just the advertised base fare.
Estimates based on median total minus average ancillary fee. Actual base fares vary by itinerary.DL charges 1.0x more in ancillary fees than AS on this route. Compare total-cost options when booking.
Run your search to see itemized fees for your itineraryWhich airline is cheapest from San Jose to Seattle?
3 airlines flew San Jose to Seattle in this dataset. The route shows a clear split between low-cost and full-service carriers. Knowing the airline isn't enough — the typical fare range below shows how far prices swing on each one. Median and range include all fees we recorded.
Even on the cheapest airline (Delta Air Lines), fares ranged USD 197–212 in this snapshot. Your exact price depends on your dates and how far ahead you book — run a live search to see your number →
| Airline | Offers | Typical range (USD) | Median (USD) | Fees (USD) |
|---|---|---|---|---|
 Delta Air Lines | 7 | 197–212 | 207 | 45 (22%) |
 Southwest Airlines | 13 | 207–222 | 216 | 0 (0%) |
 Alaska Airlines | 45 | 256–352 | 304 | 45 (15%) |
Where do the best San Jose → Seattle prices come from?
We checked direct airlines, travel agencies, and meta-search for this route. On this route the lowest median came from meta-search sources, but the cheapest channel shifts by route and date — which is exactly why a live search across all of them wins.
We compare every airline and the major booking sites but never disclose which — that's our edge. Prices are the ones we observed and aren't official data from any platform. Run a live search and we bring you the cheapest, wherever it is.
Key facts: San Jose to Seattle flights
- Full-service carriers on San Jose–Seattle cost 1.2x more than budget airlines (USD 255 vs USD 216 median; overall median USD 280).
- DL charges 1.0x more in ancillary fees than AS — USD 45 vs USD 45 avg per booking.
- The same route priced USD 92 apart depending on where it was booked — the lowest median was USD 212. We search every airline and the major booking sites at once so you always see that lowest price.
Frequently asked questions
- How much does a flight from San Jose to Seattle cost?
- Based on 65 offers analyzed, San Jose to Seattle flights range from USD 197 to USD 458, with a median price of USD 280. Search for your specific dates →
- What hidden fees should I expect on San Jose to Seattle flights?
- On average, ancillary fees (bags, seat selection) add USD 36 to the base fare on San Jose to Seattle flights. See itemized fees for your itinerary →
- Which airline is cheapest on San Jose to Seattle including all fees?
- Delta Air Lines has the lowest median fare on San Jose to Seattle at USD 207 (median across 7 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest San Jose–Seattle flights?
- It depends on your dates — no single site is always cheapest. We search every airline and the major booking sites at once (travel agencies and meta-search included) and surface whichever is lowest; the best median in this snapshot was USD 212. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on San Jose to Seattle routes?
- San Jose to Seattle has 3 airlines competing, creating a price range from USD 197 to USD 458 across 65 offers. There are two distinct fare clusters on this route: budget options and premium fares. Find where your trip lands in the distribution →
3 airlines, two price clusters — find which fits your budget
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