$84 Cheap flight deals from San Jose (SJC) to Boulder (DEN)

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This Weekend's Flight Deals from San Jose to Boulder

This weekend's flight prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Jul 5 - Thu, Jul 9
SFO
San Francisco Intl.
DEN
Denver Intl.
$398 Roundtrip, found 7 hours ago
$398
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Sun, Jul 5 from San Francisco Intl. to Denver Intl., returning Thu, Jul 9, priced at $398 found 7 hours ago
Sat, Jul 4 - Wed, Jul 8
OAK
Oakland Intl.
DEN
Denver Intl.
$435 Roundtrip, found 10 hours ago
$435
Roundtrip
found 10 hours ago
Select Bargain Flight flight, departing Sat, Jul 4 from Oakland Intl. to Denver Intl., returning Wed, Jul 8, priced at $435 found 10 hours ago
Sat, Jul 4 - Sun, Jul 5
SJC
Norman Y. Mineta San Jose Intl.
DEN
Denver Intl.
$551 Roundtrip, found 18 hours ago
$551
Roundtrip
found 18 hours ago
Select Frontier Airlines flight, departing Sat, Jul 4 from Norman Y. Mineta San Jose Intl. to Denver Intl., returning Sun, Jul 5, priced at $551 found 18 hours ago

Airfares from $84 One Way, $168 Round Trip from San Jose to Boulder

Prices starting at $168 for return flights and $84 for one-way flights to Boulder were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Aug 29 - Wed, Sep 2
SFO
San Francisco
DEN
Denver
$168 Roundtrip, just found
$168
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Aug 29 from San Francisco to Denver, returning Wed, Sep 2, priced at $168 just found
Sat, Aug 29 - Wed, Sep 2
SFO
San Francisco
DEN
Denver
$172 Roundtrip, just found
$172
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Aug 29 from San Francisco to Denver, returning Wed, Sep 2, priced at $172 just found
Tue, Sep 22 - Tue, Sep 29
SJC
San Jose
DEN
Denver
$220 Roundtrip, found 3 days ago
$220
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Tue, Sep 22 from San Jose to Denver, returning Tue, Sep 29, priced at $220 found 3 days ago
Wed, Sep 23 - Sat, Sep 26
OAK
Oakland
DEN
Denver
$237 Roundtrip, found 5 days ago
$237
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Wed, Sep 23 from Oakland to Denver, returning Sat, Sep 26, priced at $237 found 5 days ago
Tue, Sep 22 - Wed, Sep 23
SFO
San Francisco
DEN
Denver
$251 Roundtrip, found 19 hours ago
$251
Roundtrip
found 19 hours ago
Select Alaska Airlines flight, departing Tue, Sep 22 from San Francisco to Denver, returning Wed, Sep 23, priced at $251 found 19 hours ago

Boulder economy flight packages

Price found within the past 48 hours. Click for updated prices.
Tru By Hilton Denver Downtown Convention Center
2.5-star property

Tru By Hilton Denver Downtown Convention Center

8.8/10 Excellent! (1,977 reviews)

Aug 24 - Aug 30

6 night stay

San Jose (SJC) to Denver (DEN)

Alaska Airlines • Non-stop • Coach

Denver (DEN) to San Jose (SJC)

Frontier Airlines • Non-stop • Coach
Price was $990, price is now $707 per person
$707
per person
found 9 hours ago
We loved the location, everything was clean, nice choices for breakfast, the kids loved the mini shuffleboard... But we all came home with bruises on our shins from the bed frames sticking out too far and having a tiny walkway between bed and TV stand.

Reviewed on Jun 30, 2026

Catbird Hotel
4.0-star property

Catbird Hotel

9.2/10 Wonderful! (1,012 reviews)

Aug 24 - Aug 30

6 night stay

San Jose (SJC) to Denver (DEN)

Alaska Airlines • Non-stop • Coach

Denver (DEN) to San Jose (SJC)

Frontier Airlines • Non-stop • Coach
Save 100% on your flight
Price was $1,023, price is now $726 per person
$726
per person
found 9 hours ago
Such a cool concept for a hotel. It’s literally a mini apartment and we had everything we needed to stay comfortably. Indigo at the front was tremendously helpful getting us into our room early after we drove through the night unexpectedly. Location was central to everything

Reviewed on Jun 30, 2026

The Slate Denver, Tapestry Collection By Hilton
4.0-star property

The Slate Denver, Tapestry Collection By Hilton

9.4/10 Exceptional! (1,587 reviews)

Aug 24 - Aug 30

6 night stay

San Jose (SJC) to Denver (DEN)

Alaska Airlines • Non-stop • Coach

Denver (DEN) to San Jose (SJC)

Frontier Airlines • Non-stop • Coach
Save 100% on your flight
Price was $1,116, price is now $799 per person
$799
per person
found 9 hours ago
Super cute converted school house! Room was a bit small, but the high ceilings compensated for that, making it feel more roomy. Good appointments and comfortable bedding. Valet parking on the other hand is a joke at $64 a night! Stay away from the Metropolis lot across the way, only allows for 12 hours at a time (and overpriced with a booking service fee)....Do yourself a favor and book online with Spot Hero for the Tremont garage at 400 15th St. Not only do you get in and out privileges in a covered parking garage (looking at you potential hail damage!) but it was only $24 TOTAL for 3 days. Totally worth the quick 2 block walk! Only had breakfast at the onsite restaurant, but it was good, fresh and fast. Location was great for access to the Red Rocks Shuttle bus pick up by the big blue bear in front of the convention center (which was the main reason we chose this location). Good job Denver!!!

Reviewed on Jun 28, 2026

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More About Flying To Boulder from San Jose

Route Information for Flights from San Jose to Boulder

Origin Airport IATA Code
SJC
Destination Airport IATA Code
DEN
Distance
Direct Flight Airlines
Earliest Flight Arrival
Latest Flight Arrival

San Jose to Boulder

Looking for cheap San Jose to Boulder flights? Orbitz has the cheapest air fares for flights from San Jose to Boulder. Plus, with our cutting-edge mobile tools, travel planning has never been easier or more wallet-friendly.

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Cheap Air Ticket Prices Guaranteed

Orbitz is your number one source for low fares for San Jose to Boulder flights. Our low price guarantee on domestic and international air tickets give you great savings for a perfect trip to Boulder. Need hotels too? You can book them last minute on your mobile phone.

Frequently asked questions

Are there non-stop flights from San Jose to Boulder?
You betcha. As a matter of fact, there are 3 airlines that will fly you directly from San Francisco Airport to Denver Intl. Airport (DEN). Lock in your seat with one of these well-known carriers:

  • United Airlines
  • Southwest Airlines
  • Frontier Airlines

What is the shortest flight from San Jose to Boulder?
It can zip by in as little as 2 hours and 25 minutes. If you believe your vacation hours should be spent 'vacationing' rather than flying, you'll enjoy the flight from San Francisco, CA (SFO-San Francisco Intl.) to DEN.
What airlines fly from San Jose to Boulder most frequently?
Consider booking a ticket with United Airlines (UA), which flies frequently along this route. This airline offers 212 flights every month between San Francisco Airport and DEN. Alternatively, lock in your favorite seat with Southwest Airlines (WN). You'll have 82 monthly flights between San Jose and Boulder to take your pick of with this airline.
What is the cheapest day of the week to fly?
Consider flying out early in the week to save on your airfare. Orbitz data from 2021 shows that Monday is the cheapest day to depart, followed by Tuesday. Saturday showed the highest average ticket prices likely because many travelers prefer to start their vacation on a weekend.
What is the cheapest month to fly?
We won't keep you guessing, according to Orbitz data from 2021, the cheapest month to fly is February. Perfect for those who need a weekend getaway, or just a break from it all in the shortest month of the year. Be aware that the most expensive time to fly is during the height of summer in July, and in the holiday month of December.*According to flight demand on Orbitz.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

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Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.