Flights Denver → San Jose
As of September 2026, economy flights from Denver to San Jose have a typical range USD 119–517, median USD 157. Full range across all 153 offers: USD 69–1068. We analyzed 153 offers from 7 airlines in a single price check.
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: Denver → San Jose
Based on 153 offers · September 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: Denver → San Jose
Add-on pricing from the cheapest available offer per airline · September 2026 · USD
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| Frontier Airlines | — | — | — |
| Southwest Airlines | Included | Included | — |
| Delta | Included | USD 35 | — |
| Southwest | — | USD 45 | — |
| United | Included | USD 35 | — |
| American Airlines | Included | USD 35 | — |
| Alaska Airlines | Included | 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 Denver to San Jose cost?
Based on 153 offers · September 2026
Denver to San Jose flights ranged from USD 69 to USD 1068 across 153 offers analyzed in September 2026. The chart below shows how prices distributed across all 153 offers.
These 153 offers (September 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 124 and USD 233
What hidden fees do Denver to San Jose flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on Denver to San Jose routes. The breakdown below is based on 153 offers analyzed in September 2026.
| Carrier | Avg fee (USD) | % of base fare |
|---|---|---|
| F9 | 10 | 13% |
| WN | 0 | 0% |
| DL | 45 | 12% |
| Southwest | 45 | 36% |
| UA | 45 | 12% |
| AA | 45 | 10% |
| AS | 45 | 15% |
Southwest: base ~USD 79 + fees USD 45 = ~USD 124 total. Alaska Airlines: base ~USD 172 + fees USD 45 = ~USD 217 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.Fee levels vary significantly across carriers on this route — some carriers charge 50%+ above the base fare in ancillary fees.
Run your search to see itemized fees for your itineraryWhich airline is cheapest from Denver to San Jose?
7 airlines flew Denver to San Jose in this dataset. 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 (Frontier Airlines), fares ranged USD 69–88 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) |
|---|---|---|---|---|
 Frontier Airlines | 4 | 69–88 | 79 | 10 (13%) |
 Southwest | 29 | 123–124 | 124 | 45 (36%) |
 Southwest Airlines | 60 | 118–212 | 139 | 0 (0%) |
 Alaska Airlines | 25 | 170–517 | 217 | 45 (21%) |
 Delta Air Lines | 16 | 128–634 | 311 | 45 (14%) |
 American Airlines | 13 | 157–930 | 321 | 45 (14%) |
 United Airlines | 6 | 203–549 | 352 | 45 (13%) |
Where do the best Denver → San Jose 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: Denver to San Jose flights
- Full-service carriers on Denver–San Jose cost 2.6x more than budget airlines (USD 300 vs USD 114 median; overall median USD 157).
- DL charges 4.5x more in ancillary fees than F9 — USD 45 vs USD 10 avg per booking.
- The same route priced USD 88 apart depending on where it was booked — the lowest median was USD 124. 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 Denver to San Jose cost?
- Based on 153 offers analyzed, Denver to San Jose flights range from USD 69 to USD 1068, with a median price of USD 157. Search for your specific dates →
- What hidden fees should I expect on Denver to San Jose flights?
- On average, ancillary fees (bags, seat selection) add USD 26 to the base fare on Denver to San Jose flights. See itemized fees for your itinerary →
- Which airline is cheapest on Denver to San Jose including all fees?
- Frontier Airlines has the lowest median fare on Denver to San Jose at USD 79 (median across 4 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest Denver–San Jose 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 124. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on Denver to San Jose routes?
- Denver to San Jose has 7 airlines competing, creating a price range from USD 69 to USD 1068 across 153 offers. Prices on this route change with booking timing, advance purchase, and ancillary add-ons. Find where your trip lands in the distribution →
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