$49 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, Mar 29 - Wed, Apr 1
SFO
San Francisco Intl.
DEN
Denver Intl.
$169 Roundtrip, found 14 hours ago
$169
Roundtrip
found 14 hours ago
Select Frontier Airlines flight, departing Sun, Mar 29 from San Francisco Intl. to Denver Intl., returning Wed, Apr 1, priced at $169 found 14 hours ago
Fri, Mar 27 - Fri, Apr 3
SJC
Norman Y. Mineta San Jose Intl.
DEN
Denver Intl.
$295 Roundtrip, found 18 hours ago
$295
Roundtrip
found 18 hours ago
Select Frontier Airlines flight, departing Fri, Mar 27 from Norman Y. Mineta San Jose Intl. to Denver Intl., returning Fri, Apr 3, priced at $295 found 18 hours ago
Sat, Mar 28 - Sat, Apr 4
OAK
Oakland Intl.
DEN
Denver Intl.
$432 Roundtrip, found 5 days ago
$432
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Sat, Mar 28 from Oakland Intl. to Denver Intl., returning Sat, Apr 4, priced at $432 found 5 days ago

Airfares from $49 One Way, $93 Round Trip from San Jose to Boulder

Prices starting at $93 for return flights and $49 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.

Wed, Apr 1 - Tue, Apr 7
SFO
San Francisco
DEN
Denver
$93 Roundtrip, found 14 hours ago
$93
Roundtrip
found 14 hours ago
Select Frontier Airlines flight, departing Wed, Apr 1 from San Francisco to Denver, returning Tue, Apr 7, priced at $93 found 14 hours ago
Wed, Apr 1 - Tue, Apr 7
SFO
San Francisco
DEN
Denver
$94 Roundtrip, found 14 hours ago
$94
Roundtrip
found 14 hours ago
Select Frontier Airlines flight, departing Wed, Apr 1 from San Francisco to Denver, returning Tue, Apr 7, priced at $94 found 14 hours ago
Sat, Apr 25 - Tue, Apr 28
SFO
San Francisco
DEN
Denver
$101 Roundtrip, just found
$101
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Apr 25 from San Francisco to Denver, returning Tue, Apr 28, priced at $101 just found
Thu, May 7 - Mon, May 11
SJC
San Jose
DEN
Denver
$160 Roundtrip, found 2 days ago
$160
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Thu, May 7 from San Jose to Denver, returning Mon, May 11, priced at $160 found 2 days ago
Thu, Jun 4 - Mon, Jun 8
SFO
San Francisco
DEN
Denver
$201 Roundtrip, found 19 hours ago
$201
Roundtrip
found 19 hours ago
Select United flight, departing Thu, Jun 4 from San Francisco to Denver, returning Mon, Jun 8, priced at $201 found 19 hours ago

Boulder economy flight packages

Price found within the past 48 hours. Click for updated prices.
Summit Villa BnB
3.0-star property

Summit Villa BnB

9.8/10 Exceptional! (113 reviews)

May 16 - May 19

3 night stay

San Jose (SJC) to Denver (DEN)

Alaska Airlines • Non-stop roundtrip • Coach
Price was $417, price is now $350 per person
$350
per person
found 2 hours ago
We enjoyed our stay! Ken was very accommodating. We enjoyed the garden room and breakfast. It’s very close to the airport also! He has a hot tub you can dip in and watch the sunset. It was gorgeous out there.

Reviewed on Jun 24, 2023

Hyatt Regency Denver at Colorado Convention Center
4.0-star property

Hyatt Regency Denver at Colorado Convention Center

9.2/10 Wonderful! (1,168 reviews)

May 1 - May 4

3 night stay

San Jose (SJC) to Denver (DEN)

Southwest Airlines • Coach

Denver (DEN) to San Jose (SJC)

Frontier Airlines • Coach
Price was $1,545, price is now $1,277 per person
$1,277
per person
found 11 hours ago
We had the perfect stay thanks to the staff and services. Roger at check-in was delightful as well as helpful and we were soon in our 'room with a view' on the 8th floor. Valet parking was easy, always quick, and the personnel were very courteous. Cocktails in the Peaks Lounge is an experience not to be missed, as we enjoyed a Denver skyline view while sipping curated cocktails. Best of all were the facials we received from Madena and a massage from Julia at Spa Juniper in the hotel. Excellent stay. Can't wait to repeat the experience.

Reviewed on Jan 27, 2026

Holiday Inn Express Hotel & Suites Denver East-Peoria Street by IHG
2.5-star property

Holiday Inn Express Hotel & Suites Denver East-Peoria Street by IHG

8.6/10 Excellent! (1,010 reviews)

May 16 - May 19

3 night stay

San Jose (SJC) to Denver (DEN)

Alaska Airlines • Non-stop roundtrip • Coach
Price was $480, price is now $411 per person
$411
per person
found 2 hours ago
Front desk pleasant. Hotel was clean.

Reviewed on Dec 2, 2023

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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

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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.

More Destinations

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.