$40 Cheap flight deals from San Francisco (SJC) to Boulder (DEN)

Earn rewards on top of your airline miles with Orbitz Rewards

Many airlines offer flexible change policies

Sign up to receive text alerts about your trip

This Weekend's Flight Deals from San Francisco 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.

Sat, Apr 26 - Sat, May 3
SFO
San Francisco Intl.
DEN
Denver Intl.
$195 Roundtrip, just found
$195
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Apr 26 from San Francisco Intl. to Denver Intl., returning Sat, May 3, priced at $195 just found
Sun, Apr 27 - Sun, May 4
SJC
Norman Y. Mineta San Jose Intl.
DEN
Denver Intl.
$313 Roundtrip, found 1 hour ago
$313
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Sun, Apr 27 from Norman Y. Mineta San Jose Intl. to Denver Intl., returning Sun, May 4, priced at $313 found 1 hour ago
Fri, Apr 25 - Tue, Apr 29
OAK
Oakland Intl.
DEN
Denver Intl.
$401 Roundtrip, found 7 hours ago
$401
Roundtrip
found 7 hours ago
Select Bargain Flight flight, departing Fri, Apr 25 from Oakland Intl. to Denver Intl., returning Tue, Apr 29, priced at $401 found 7 hours ago

Airfares from $40 One Way, $144 Round Trip from San Francisco to Boulder

Prices starting at $144 for return flights and $40 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.

Thu, May 15 - Fri, May 16
SFO
San Francisco
DEN
Denver
$144 Roundtrip, found 14 hours ago
$144
Roundtrip
found 14 hours ago
Select Southwest Airlines flight, departing Thu, May 15 from San Francisco to Denver, returning Fri, May 16, priced at $144 found 14 hours ago
Tue, Jul 1 - Tue, Jul 15
SFO
San Francisco
DEN
Denver
$188 Roundtrip, just found
$188
Roundtrip
just found
Select United flight, departing Tue, Jul 1 from San Francisco to Denver, returning Tue, Jul 15, priced at $188 just found
Thu, Jul 10 - Thu, Jul 17
SJC
San Jose
DEN
Denver
$206 Roundtrip, found 7 hours ago
$206
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Thu, Jul 10 from San Jose to Denver, returning Thu, Jul 17, priced at $206 found 7 hours ago
Wed, May 28 - Tue, Jun 3
OAK
Oakland
DEN
Denver
$207 Roundtrip, found 1 day ago
$207
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, May 28 from Oakland to Denver, returning Tue, Jun 3, priced at $207 found 1 day ago
Tue, Jul 1 - Tue, Jul 15
SFO
San Francisco
DEN
Denver
$208 Roundtrip, just found
$208
Roundtrip
just found
Select American Airlines flight, departing Tue, Jul 1 from San Francisco to Denver, returning Tue, Jul 15, priced at $208 just found

Boulder economy flight packages

Price found within the past 48 hours. Click for updated prices.
Holiday Inn Express Denver Downtown by IHG
3.0-star property

Holiday Inn Express Denver Downtown by IHG

7/10 Good! (1,098 reviews)

May 24 - May 30

6 night stay

San Francisco (SFO) to Denver (DEN)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
per person
found 22 hours ago
Loved the location.

Reviewed on Dec 15, 2024

Hyatt Place Denver/Cherry Creek
3.0-star property

Hyatt Place Denver/Cherry Creek

8.8/10 Excellent! (1,433 reviews)

May 30 - Jun 5

6 night stay

San Jose (SJC) to Denver (DEN)

Southwest Airlines • Coach

Denver (DEN) to San Jose (SJC)

Alaska Airlines • Coach
per person
found 24 hours ago
The AC in my room kept on rattling and making odd sounds.

Reviewed on Apr 15, 2025

Kasa Union Station Denver
4.0-star property

Kasa Union Station Denver

9.2/10 Wonderful! (673 reviews)

May 30 - Jun 5

6 night stay

San Jose (SJC) to Denver (DEN)

Southwest Airlines • Coach

Denver (DEN) to San Jose (SJC)

Alaska Airlines • Coach
per person
found 24 hours ago
We had an excellent experience. The apartment was extremely clean and well-stocked. In addition, whenever we had a question or need, we would email the staff and they would respond almost immediately regardless of the time of day.

Reviewed on Aug 4, 2023

Don't see what you're looking for?
See all available trips from San Francisco to Boulder
View all trips

More About Flying To Boulder from San Francisco

Route Information for Flights from San Francisco to Boulder

Origin Airport IATA Code
SJC
Destination Airport IATA Code
DEN
Distance
965 mi
Direct Flight Airlines
Air Canada, Frontier Airlines, Avianca, Emirates, Southwest Airlines, ANA, Asiana Airlines, Virgin Australia, Air New Zealand, United Airlines
Earliest Flight Arrival
3:38PM UTC
Latest Flight Arrival
6:25AM UTC

San Francisco to Boulder

If you are looking for guaranteed low prices on flights from San Francisco to Boulder, then look no further than Orbitz. Orbitz offers everything you need to plan the perfect trip—from cheap deals and bargain holiday packages to cutting-edge mobile tools.

Your Perfect BoulderVacation Package

Orbitz gives you access to exclusive deals and discounts on flights from San Francisco to Boulder. Mix and match hotels and San Francisco to Boulder flights to create your dream vacation. All your options are displayed at a glance with the Orbitz Matrix Display, which shows your package savings and built-in extras, such as free nights.

Stress free Searches Even on the Move

With free mobile apps for iPhone and Android, you never have to miss out on great prices on flights from San Francisco to Boulder. In a hurry? No worry—just check your flight status using m.orbtiz.com via your mobile browser or to book that exclusive hotel deal.

Don’t Forget the Car Rental

Need a car after your San Francisco to Boulder flights? Not only do you get great rental deals when you book in advance with Orbitz, we can send your flight details to the car rental company, so it knows when your flight from San Francisco to Boulder is delayed.

Low Price Guarantee

With the best deals and easy searching options, Orbitz make it easy and fun to find cheap San Francisco to Boulder flights, a great hotel, or a full vacation package. With Orbitz’s low price guarantee, you always get great discounts on air ticket prices.

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.