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$76+ Cheap flights from Colorado to San Francisco (SFO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SFO
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Colorado to San Francisco

Keep the following information in mind while searching for Colorado to San Francisco flight deals. Data was last updated September 16, 2025.

Round-trip from

$105
(Frontier)

One-way from

$76
(Southwest)

Popular in

July

Cheapest in

February

Average price

$217

Good round-trip deal

$186 or less

Good one-way deal

$116 or less
From Colorado to San Francisco
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One-way flight from Colorado to San Francisco
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Highest demand for flights based on searches. 16% potential increase in price ($42 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Colorado to San Francisco.
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Price to beat on a one-way flight from Colorado to San Francisco.
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Find flight deals from Colorado to San Francisco

Cheapest flights from Colorado to San Francisco
Explore the most affordable flight options available from Colorado to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2010:29 pmDEN - SFO
Nonstop2h 45mFrontier
Fri 10/248:21 pmSFO - DEN
Nonstop2h 41mFrontier
Deal found 9/15$105
This Cheapflightsfares deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/710:29 pmDEN - SFO
Nonstop2h 45mFrontier
Sat 11/84:49 pmSFO - DEN
1 stop5h 10mFrontier
Deal found 9/15$107
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/218:39 pmDEN - SFO
Nonstop2h 48mFrontier
Wed 11/196:34 amSFO - DEN
Nonstop2h 44mFrontier
Deal found 9/14$108
This Cheapflightsfares deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/710:29 pmDEN - SFO
Nonstop2h 45mFrontier
Sun 11/166:33 pmSFO - DEN
1 stop8h 26mFrontier
Deal found 9/13$109
This CheapOair deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/67:45 amDEN - SFO
Nonstop2h 48mFrontier
Sat 11/86:34 amSFO - DEN
Nonstop2h 44mFrontier
Deal found 9/14$110
This Priceline deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2310:29 pmDEN - SFO
Nonstop2h 45mFrontier
Sat 10/2510:24 amSFO - DEN
1 stop6h 33mFrontier
Deal found 9/14$111
This Cheapflightsfares deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:30 amDEN - SFO
Nonstop2h 45mFrontier
Wed 10/86:34 amSFO - DEN
Nonstop2h 44mFrontier
Deal found 9/16$112
This Frontier deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/238:41 pmDEN - SFO
Nonstop2h 49mFrontier
Sun 10/56:29 amSFO - DEN
Nonstop2h 39mFrontier
Deal found 9/14$113
This Cheapflightsfares deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/310:29 pmDEN - SFO
Nonstop2h 47mFrontier
Mon 10/67:07 pmSFO - DEN
Nonstop2h 41mFrontier
Deal found 9/14$114
This Frontier deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:30 amDEN - SFO
Nonstop2h 45mFrontier
Tue 10/76:34 amSFO - DEN
Nonstop2h 44mFrontier
Deal found 9/14$115
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3110:29 pmDEN - SFO
Nonstop2h 45mFrontier
Fri 11/78:09 pmSFO - DEN
Nonstop2h 41mFrontier
Deal found 9/16$116
This Cheapflightsfares deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/307:45 amDEN - SFO
Nonstop2h 48mFrontier
Sun 11/28:09 pmSFO - DEN
Nonstop2h 41mFrontier
Deal found 9/16$118

Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado to San Francisco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Colorado to San Francisco that are best for you.

Fly from

Colorado

Fly to

San Francisco

Route

Depart

Return

Price

MontroseSan Francisco

MTJ - SFO

MTJSFO

Montrose County

Wed 11/5

12:05 pm-6:35 pm

1 stop7h 30m

San Francisco

Tue 11/11

5:50 am-11:20 am

1 stop4h 30m

$151

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Mon 11/24

6:00 am-7:50 am

Nonstop2h 50m

San Francisco

Mon 12/22

5:00 am-8:40 am

Nonstop2h 40m

$157

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Thu 11/27

3:00 pm-4:40 pm

Nonstop2h 40m

San Francisco

Tue 12/2

2:35 pm-9:35 pm

1 stop6h 00m

$167

MontroseSan Francisco

MTJ - SFO

MTJSFO

Montrose County

Wed 10/29

4:50 pm-11:05 pm

1 stop7h 15m

San Francisco

Mon 11/3

5:50 am-11:20 am

1 stop4h 30m

$167

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Sat 10/11

3:55 pm-5:36 pm

Nonstop2h 41m

San Francisco

Mon 10/13

8:52 pm-12:29 am

Nonstop2h 37m

$176

Colorado SpringsSan Francisco

COS - SFO

COSSFO

Colorado Springs

Thu 10/23

4:54 pm-11:23 pm

1 stop7h 29m

San Francisco

Mon 10/27

7:00 am-4:02 pm

1 stop8h 02m

$177

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Thu 10/23

8:30 pm-10:05 pm

Nonstop2h 35m

San Francisco

Sun 10/26

8:30 pm-11:55 pm

Nonstop2h 25m

$177

Colorado SpringsSan Francisco

COS - SFO

COSSFO

Colorado Springs

Tue 10/7

7:10 pm-10:45 pm

1 stop4h 35m

San Francisco

Wed 10/8

5:45 am-1:05 pm

1 stop6h 20m

$177

Colorado SpringsSan Francisco

COS - SFO

COSSFO

Colorado Springs

Tue 1/20

6:40 am-10:30 am

1 stop4h 50m

San Francisco

Sat 1/24

12:30 pm-7:30 pm

1 stop6h 00m

$177

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Tue 11/4

7:25 am-11:30 am

1 stop5h 05m

San Francisco

Mon 11/10

5:55 am-1:30 pm

2 stops6h 35m

$178

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 60 results
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Best time to book a flight from Colorado to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Colorado with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Colorado to San Francisco

What is the cheapest month to book a flight from Colorado to San Francisco?

Currently, January is the cheapest month in which you can book a flight from Colorado to San Francisco (average of $276). Flying from Colorado to San Francisco in June is currently the most expensive (average of $357). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CO to SFO?

Find hourly flight availability from Colorado to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Colorado to San Francisco as you normally would.

Weekly flight availability from Colorado to San Francisco

Explore weekly flight availability from Colorado to San Francisco. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 16, 2025.

The most flights from USCO to SFO are scheduled on a Monday (50 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (36 on average).

Related info for your journey

Find useful and relevant information for your journey from Colorado to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to San Francisco from Colorado?

    Most people fly into San Francisco (SFO) if they book a flight to San Francisco from Colorado. San Francisco is conveniently located just 11.8 mi from San Francisco’s city center.

  • How popular is this Colorado to San Francisco flight route?

    The Colorado to San Francisco flight path was viewed by 113 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Colorado to San Francisco?

    There are many flights that can get you from Colorado to San Francisco in 2h 50m. Fly via Southwest, United Airlines, or American Airlines to get the fastest option. Colorado and San Francisco are separated by a distance of 964 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Colorado to San Francisco one-way?

    $79 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on United Airlines and American Airlines, with prices starting from $79 and $154, respectively.

  • What are the most popular routes from Colorado to San Francisco?

    While some choose either Grand Junction Regnl - San Francisco or Aspen Pitkin County - San Francisco, Denver Intl - San Francisco is the most popular route from Colorado to San Francisco.

  • What are the most reliable airlines from Colorado to San Francisco?

    No one likes to see their flight delayed. When booking a flight from Colorado to San Francisco consider choosing Emirates (84%), Air China (79%) or ANA (74%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Colorado to San Francisco?

    Looking for the cheapest flight from Colorado to San Francisco? While on average our users pay $787, our data indicates the cheapest price to be $63. The most popular route (Denver Intl - San Francisco), is priced around $77.

  • Can I find deals for flights from Colorado to San Francisco that include hotel bookings?

    Yes. In addition to deals on Colorado to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Colorado to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colorado to San Francisco.

  • Can I find deals for business class flights from Colorado to San Francisco?

    Yes. Cheapflights offers flight deals from Colorado to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Colorado to San Francisco?

    Currently, January is the cheapest month in which you can book a flight from Colorado to San Francisco (average of $276). Flying from Colorado to San Francisco in June is currently the most expensive (average of $357). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Roseville
Santa Cruz
Livermore
South San Francisco
Turlock
Antioch
Watsonville
Santa Clara
Manteca
Sunnyvale
Hollister
Vacaville
Foster City
Union City
Vallejo
Burlingame
Redwood City
San Mateo
San Leandro
Lathrop

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Top 5 airlines flying from Colorado to San Francisco

Discover the top 5 airlines that operate flights from Colorado to San Francisco. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$45Average$138FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$141Average$335FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$161Average$429FlexibilityNo cancel feeOn-time69%
DeltaCheapest$171Average$325FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$228Average$367FlexibilityNo cancel feeOn-time71%

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