DEN - SJC

$86 Find Cheap Flights from Denver to San Jose

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to San Jose departing on 4/30. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Jose

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to San Jose, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to San Jose, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$221
Overall average: $297
Frontier
Thu 4/9Sun 4/12
DEN - SJC • 1 stop
Cheapest non-stop
$339
Typical prices: $230-$354
United Airlines
Tue 4/7Wed 4/8
DEN - SJC • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Frontier's Economy Bundle includes a carry-on and seat.
Use Denver's West Security Checkpoint for faster screening.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $221 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Nonstop flights
You can fly direct with Southwest and United Airlines. Average duration is 2h 39m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top layover airports
Cheapest • Avg $191 (round-trip)
Shortest trip • 4h 15m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 53% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 36% price drop
Most popular
Good to know
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+1
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Jose!
Flight Deals
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Expert advice
Flight Deals

Cheap Flights from Denver to San Jose (DEN-SJC)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to San Jose that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Denver to San Jose

Thu, Apr 9 - Sun, Apr 12
Frontier Logo
10:30 pm - 9:34 am
DEN
-
SJC
12h 04m
1 stop
Frontier Logo
2:09 pm - 9:45 am
SJC
-
DEN
18h 36m
1 stop
$221Frontier
Tue, Apr 7 - Wed, Apr 15
Alaska Airlines Logo
7:25 am - 10:10 pm
DEN
-
SJC
15h 45m
1 stop
Alaska Airlines Logo
7:00 am - 11:44 pm
SJC
-
DEN
15h 44m
1 stop
$223Alaska Airlines
Wed, Apr 15 - Sun, Apr 19
Frontier Logo
10:29 pm - 7:16 pm
DEN
-
SJC
21h 47m
1 stop
Frontier Logo
6:39 pm - 6:16 pm
SJC
-
DEN
22h 37m
1 stop
$224Frontier
Sun, May 10 - Thu, May 21
Frontier Logo
12:34 pm - 1:17 pm
DEN
-
SJC
25h 43m
1 stop
Frontier Logo
12:57 pm - 12:38 am
SJC
-
DEN
10h 41m
1 stop
$225Frontier
Tue, Apr 14 - Wed, Apr 15
Delta Logo
12:30 pm - 10:15 pm
DEN
-
SJC
10h 45m
2 stops
Delta Logo
3:40 pm - 11:50 pm
SJC
-
DEN
7h 10m
1 stop
$228Delta
Thu, May 14 - Mon, May 18
Frontier Logo
7:00 am - 11:59 am
DEN
-
SJC
5h 59m
1 stop
Frontier Logo
12:57 pm - 1:12 pm
SJC
-
DEN
23h 15m
1 stop
$229Frontier
Wed, Apr 22 - Tue, Apr 28
Alaska Airlines Logo
6:45 am - 12:03 pm
DEN
-
SJC
6h 18m
1 stop
Alaska Airlines Logo
12:44 pm - 12:06 pm
SJC
-
DEN
22h 22m
1 stop
$230Alaska Airlines
Tue, Apr 21 - Sun, Apr 26
Alaska Airlines Logo
6:20 pm - 9:44 am
DEN
-
SJC
16h 24m
1 stop
Alaska Airlines Logo
8:18 pm - 11:59 pm
SJC
-
DEN
26h 41m
1 stop
$233Alaska Airlines
Wed, Apr 15 - Sun, Apr 19
Frontier Logo
10:29 pm - 7:16 pm
DEN
-
SJC
21h 47m
1 stop
Frontier Logo
8:22 pm - 3:59 am
SJC
-
DEN
6h 37m
1 stop
$234Frontier
Fri, May 15 - Sun, May 17
Frontier Logo
7:00 am - 7:25 pm
DEN
-
SJC
13h 25m
1 stop
Frontier Logo
8:20 pm - 3:59 am
SJC
-
DEN
6h 39m
1 stop
$235Frontier
Booking Insights

KAYAK's insights & trends for Denver to San Jose flights

Get data-powered insights and trends into flights from Denver to San Jose to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Denver to San Jose?

The average price of all round-trip flights from Denver to San Jose clicked on KAYAK for each day over the last 12 months.

For Denver to San Jose, Thursday is the cheapest day to fly on average and Monday is the most expensive. Flying from San Jose back to Denver, the best deals are generally found on Thursday, with Sunday being the most expensive.

What is the cheapest month to fly from Denver to San Jose?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to San Jose, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Denver to San Jose is September, where tickets cost $207 (return) on average. On the other hand, the most expensive months are February and March, where the average cost of round-trip tickets is $479 and $417 respectively.

Can I save money by flying with a layover from Denver to San Jose?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $391, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from Denver to San Jose?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Denver to San Jose, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Denver to San Jose, you should book around 2 weeks before departure, which saves you about 53% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Expert advice

Expert advice for your flight from Denver to San Jose

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Blane Bachelor

Blane Bachelor

Expert on Southwest

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Stefanie Waldek

Stefanie Waldek

Expert on United Airlines and Frontier

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Harriet Baskas

Harriet Baskas

Expert on DEN

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Bill Fink

Bill Fink

Expert on SJC

Bill is an award-winning travel writer with extensive credits covering airlines and the aviation industry for publications including AARP, AFAR, The Points Guy and Yahoo. Based in Portland, Oregon, Bill has traveled to more than 75 countries - and been late for his flight in most of them. He once achieved top-level frequent flier status for all of American, Delta and United Airlines during a single year.

Good to know

Low seasonJanuary
Cheapest flight$86
Best time to beat the crowds but there is an average 21% increase in price.
Most popular time to fly and prices are also 6% lower on average.
Flight from Denver to San Jose

When to book flights from Denver to San Jose

Are your dates flexible? Find out the best times to travel from Denver to San Jose based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Denver to San Jose

  • How early should I get to DEN when traveling to SJC?

    On the date you're set to travel from DEN to SJC, you should reach the airport at least 1h 30min before your flight. This will give you enough time to go through the airport's security checkpoints. It will also give you adequate time to explore this superb airport.

  • Does SJC have on-site car rental facilities?

    If you'd like to rent a car at SJC, you can do so easily, as this airport is home to a Rental Car Facility that houses the counters for reliable car rentals like Avis, Dollar, Budget, Enterprise, National, and Thrifty. You will walk to the SJC Rental Car Facility, as it is across from Terminal B.

  • Where are the ATMs at SJC?

    The Landside and Airside of both Terminals A and B feature ATMs. On Terminal B's Landside, ATMs are found near the Baggage Claim Area and the 1st floor, whereas on Terminal A's Landside, there's one ATM on the 1st floor. On Terminal A's Airside, the ATMs are near Gates 10, 13, and 15, while on Terminal B's Airside, they are near Gates 19 and 26.

  • Are there any other airports in San Jose other than SJC?

    Other than SJC, Oakland International Airport (OAK) and San Francisco International Airport (SFO) also serve San Jose. Therefore, if the location you'd like to visit in San Jose is closer to SFO or OAK, you can opt to fly into either.

  • What is the cheapest flight from Denver to San Jose?

    In the last 3 days, the lowest price for a flight from Denver to San Jose was $86 for a one-way ticket and $221 for a round-trip.

  • Do I need a passport to fly between Denver and San Jose?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Denver to San Jose?

    Denver airport is called Denver Intl and the only airport in San Jose is San Jose.

  • Which airlines offer Wi-Fi service onboard planes from Denver to San Jose?

    JetBlue, Delta, Alaska Airlines, Hawaiian Airlines, and American Airlines offer inflight Wi-Fi service on the Denver to San Jose flight route.

  • Which aircraft models fly most regularly from Denver to San Jose?

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the Denver to San Jose flight route.

  • Which airline alliances offer flights from Denver to San Jose?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Denver and San Jose, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Denver to San Jose?

    There are nonstop flights from Denver to San Jose on a daily basis.

  • Which is the best airline for flights from Denver to San Jose, Southwest or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Denver to San Jose are Southwest and Alaska Airlines. With an average price for the route of $351 and an overall rating of 8.0, Southwest is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $261 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Denver to San Jose?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Denver to San Jose.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Denver to San Jose?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Jose from Denver is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Denver to San Jose?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Jose with an airline and back to Denver with another airline. Booking your flights between Denver and SJC can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Denver to San Jose?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Jose from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Denver to San Jose

  • Looking for a cheap flight? 25% of our users found flights on this route for $208 or less one-way and $394 or less round-trip.
  • While waiting for your flight to San Jose International Airport (SJC) at Denver International Airport (DEN), you should consider resting at the Centurion Lounge. Located at Gate C46 on the Mezzanine Level of Concourse C, this paid-entry lounge features super-comfy seats, flat-screen TVs, clean toilets, a variety of snacks and drinks, and hospitable staff. Going by its amenities, your comfort is assured in this lounge.
  • If you need to breastfeed or change your baby's diapers while at DEN, you can use the nursing rooms in the centers of Gates A, B, and C. In any of these rooms, besides privacy, you'll enjoy access to comfy seating, a hand washing sink, a changing table, and power outlets.
  • At DEN, you can enjoy massage services at one of the two massage parlors run by A Massage. One is found near Gates A, while another is situated not so far from Gates B. Irrespective of the branch you visit, you will enjoy top-notch services, as they have elite massage equipment and massage therapists.
  • At SJC, there are several nursing rooms you can breastfeed your baby in. In Terminal A, there's one near Gate 8, while in Terminal B, there are nursing rooms next to Gates 18, 21, 24, and 26. Kindly note that if you only want to change diapers, you can comfortably do so in any of the airport's restrooms, as all feature baby changing tables.
  • If you'd like to charge an electronic device before departing SJC, you can do so without hassle, as several charging stations are spread throughout the airport. These stations are found near Gates 7A, 9, 15, 18, and 28.

Prefer to fly direct from Denver to San Jose?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Denver Intl to San Jose.
Find which airlines fly direct from Denver Intl Airport to San Jose Airport, which days they fly and book direct flights.

Direct departures

Denver Intl to San Jose

Monday

Southwest,United Airlines

Southwest,United Airlines

Tuesday

Southwest,United Airlines

Southwest,United Airlines

Wednesday

Southwest,United Airlines

Southwest,United Airlines

Thursday

Southwest,United Airlines

Southwest,United Airlines

Friday

Southwest,United Airlines

Southwest,United Airlines

Saturday

Southwest,United Airlines

Southwest,United Airlines

Sunday

Southwest,United Airlines

Southwest,United Airlines

See more direct flights

Direct returns

San Jose to Denver Intl

Monday

Southwest,United Airlines

Southwest,United Airlines

Tuesday

Southwest,United Airlines

Southwest,United Airlines

Wednesday

Southwest,United Airlines

Southwest,United Airlines

Thursday

Southwest,United Airlines

Southwest,United Airlines

Friday

Southwest,United Airlines

Southwest,United Airlines

Saturday

Southwest,United Airlines

Southwest,United Airlines

Sunday

Southwest,United Airlines

Southwest,United Airlines

See more direct flights

Reviews of the top 5 airlines serving from Denver to San Jose

 
See real verified KAYAK customer reviews for airlines flying from Denver to San Jose. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Denver to San Jose? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4319 reviews
8.0Comfort
7.0Food
7.5Entertainment
8.1Boarding
8.6Crew
Airline reviews

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

8.0 ExcellentTobin, Mar 2026
SJC - BUR
Read more Southwest reviews

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

Mediocre. Boarding is now unpleasant. The employees, once friendly and nice, are now regularly speaking sternly to passengers, badgering them to do things right so they can take off on time and gate check bags because they don't have enough overhead bin space. The pretzel snack was crushed flat and broken into even smaller pieces, which happens frequently lately. Drink service was suspended before they reached my row.

The charges were ridiculous for an hour flight and the turbulence was very scary.

My flight from Denver to Minneapolis was excellent. My flight from Minneapolis to Denver was one of the worst I flights I have ever experienced. I had a window seat, the gentleman in the middle seat was morbidly obese and SW should have made him purchase two seats. His elbow dug into my arm most of the way even after I asked to please be careful. I was literally squashed between the him and the window with no wiggle room. The plane was full so it was not possible to ask for a different seat. I realize I should have complained to the flight attendant but I didn't feel anything could be done to rectify the situation. I fly SW often, I will continue to do so as this was my first negative experience.

Everything went smoothly and we even arrived a little bit early.

3 hour delay. Had to change plans and was still delayed.

The flight crew was extremely rude and especially not helpful when our flight was delayed.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

I was standing in line to use the restroom. A First Class passenger wanted to use the restroom after me, but Jaques made me wait on Flight 3418 from BOI to SJC on December 12, 2025. I felt this was inappropriate and rude.

My mother suffers from Lupus and has challenges walking. I specifically called Alaska airlines, stated her condition and made sure my mother’s had wheel char assistance towards gate and into the gate hall so she just had to get into the plane and walk a couple of steps. It was assured by Alaska team that the service was granted in both airports , DEN and SAN . In Denver , the wheelchair assistance never arrived. I had to personally grab another airline wheelchair sit my mom.Then I had to go to Alaska Airlines front desk twice to let them know my mother was waiting at the wheelchair service station. Upon arrival to SD Airport , there was no wheelchair service waiting for her in the hall before deplaning. She had to walk her way out in pain. Absolutely inconsiderate and unacceptable by the airline! Never again flying with Alaska Airlines.

Waiting 2 hours after landing to arrive at a gate was ridiculous.

The pretzels have no taste. How about a choice of snacks? The flight itself was fine.

Look at my previous review I just wrote on this survey. It was awful!

The airline staff was great! The best safety review ive ever had!

Flight attendant missed us first pass with beverage. We had to ask for water on second pass as we were going to be missed again.

Hawaiian Airlines, like most US-based ones, constantly provide sub-par service and pack their planes to the max with all kinds of last-minute-purchase schemes. As a result, it makes every flight so uncomfortable and generates high health risk for its passengers. In one word, GREED rules the day!

generally good. No snacks or drinks on the flight 3379 from Portland to San Jose, CA. Sad.

Terrible airport. It took over one hour to pass checkpoint and security gate. We stood under the sun in the long line

Left a few minutes early. Got in 15 minutes early. Very attentive service on board. Very organized boarding.

There’s not much to say about a one hour flight. This is a connection from LA to RNO that I missed the previous night due to a mechanical check delay on my originating flight from JFK to LAX. The short flight itself was fine. Instructions from the pilot and crew were per usual. The coffee was barely lukewarm, which possibly was purposeful so we would down it quickly. Bags were already on carousel upon reaching baggage claim, which was excellent.

Terrible. Four hour delay because Delta could not find crew to man the aircraft. Terrible communication. Terrible insight into the delays. One of the worst flight experiences I’ve had.

Delta continues to set the benchmark for traveler-friendly service with minimal disruption and clear communication within the mainland US (coast to coast). I am consistently pleased to be a Delta customer, and this experience once again met my expectations. There was a brief delay departing from MIA due to a technical issue that required the aircraft to return to the gate. However, the situation was handled professionally and transparently. Fortunately, my planned layover allowed ample buffer time, so the adjustment caused no stress. Overall, another smooth and reassuring experience.

Awesome! On time flight, early arrival, and a complimentary upgrade!

Was forced to check in my small carry on, even though I informed the crew it has very fragile items inside

They double booked seats, the gate staff changed my ticket as I was boarding she went over to the computer and changed it without telling me. She messed up an entire three row section for me and others. Other travelers were outraged but the gate staff were so rude, so condescending saying it wasn't their problem to solve. I would rate this a zero if I could. Will not fly Delta again I'll stick with United and American.

I usually get upgraded so my experience is usually amazing. I did not get upgraded this time - which was fine - but the wifi had issues, the monitors were going in & out, & (though not Delta's fault) one of the gentlemen next to me desperately needed a shower.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

Flight left on time and we arrived 25 minutes early! There was a gate available when we arrived so early on a busy Sunday afternoon! Flight attendants came around twice with the drinks cart.

Sitting on the runway after we land for almost two hours! Not sure if we should blame United or Just Dumpy Vance.

Flight was late - I was downgraded from first class to coach

Crew seemed a bit cranky. No seatback screens. But boarding was efficient and on time and we arrived early.

See previous note about the passenger in Denver who threw my husband's bag out of the overhead bin in order to maker room for his own. And the flight attendant back up the new passenger.

Terrible. They wouldn't allow me on my flight on the 14th..

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

There's no seats that lean back with little leg space i wad uncomfortable the entire flight. Your charges for extra baggage is despicable and costly!!

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

There was no food and no entertainment, so I'm not sure why these are even in the survey, as my understanding is frontier does not ever offer food without a few, not even a snack, and there are no screens so unless the flight safety talk is our entertainment why ask how we liked it?. One of the flight attendants say in the back of the plane as people filed in to their seats, yelling orders about where to put baggage and telling people to hurry up. It was the least professional experience I've ever had on a flight.

Not clean and was told I would get a great seat and it was not great at all

Delayed. Text notifications were slow. Not much information o what was happening. Boarding was slow and confusing. Wasn’t even offered water other flight. Had to ask. No entertainment at all. Felt like.a Greyhound bus.

Terrible. The canceled my entire flight when I requested a refund for a trip frontier canceled trip one way.

i was unable to check in the flight. refund requested

Frontier is the Walmart of airlines. Frontier has removed adjustability and comfort from their seats to make the flight lighter and save gas. This makes it impossible to sleep on their flights. Their customer service is abysmal. Once, I bought a drink on the plane, and they swiped my credit card on the plane to pay for it. Then I got three weeks of daily notices from my bank telling me they tried to charge the wrong card number over and over again. I tried to call them, but they removed the ability to actually talk to someone that can resolve such a problem from their company to cut corners. The only way to talk to someone in person is to go to the check-in counter at the airport (40 minutes drive from my house). Eventually their system gave up on trying to charge the card, after 21 days of repeated tries. They don't pad their prices even a little to handle customer service issues like missed flights. They also have a blanket policy preventing helping you reschedule a missed flight if their system says you "cancelled" your own flight online. This is a major problem because their website is broken on mobile devices, the only web browser you have at the airport when their gate staff tell you that you have to reschedule your own missed flight online because they can't help you. I tried to reschedule my flight on my android device and instead, their website crashed and "cancelled" my missed flight. When I got to the counter, the agent argued with me for 5 minutes insisting that I intentionally cancelled my own flight (implying I had to buy another flight). She missed the point: the problem was that I could not buy another flight because their website is broken. I left to avoid more conflict with the "customer service" agent. I tried to redress my issue with their only other "customer service" chanel available: the contact form on their website. The response I got was more of the same: you cancelled your own flight, according to our website / computer records, therefore we won't help you. I was trying to explain the problem with their broken website that cost me hundreds of dollars by crashing / malfunctioning and resulting in a cancelled flight, but they only had deaf ears for this problem. Worst customer service I have ever experienced. I will never buy another Frontier flight again, because it is a risky, painful move that I will likely regret often.

I think Frontier was very good at communication. Their app worked very well. Loading was great and the flight was nice and easy.

Great for the price. No wifi or entertainment, but gate agents and crew were fantastic and we boarded quickly and left on time.

Everything you need to know for your flight from Denver to San Jose

Other airlines flying from Denver to San Jose

Flights from the other most popular airlines that fly from Denver to San Jose according to KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.