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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 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SFO
Nov 21 — Nov 281
Fri 11/21
Fri 11/28
1 adult, Economy
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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 October 22, 2025.

This Frontier deal was found by Cheapflights users on 10/20. 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.
Thu 12/49:05 pmDEN - SFO
1 stop13h 49mFrontier
Mon 12/88:48 amSFO - DEN
Nonstop2h 42mFrontier
Deal found 10/20$114
This Frontier deal was found by Cheapflights users on 10/21. 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.
Wed 11/128:39 pmDEN - SFO
Nonstop2h 48mFrontier
Sat 11/152:19 pmSFO - DEN
1 stop5h 40mFrontier
Deal found 10/21$119
This Frontier deal was found by Cheapflights users on 10/21. 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.
Thu 10/307:45 amDEN - SFO
Nonstop2h 48mFrontier
Thu 10/309:55 pmSFO - DEN
1 stop10h 40mFrontier
Deal found 10/21$120
This Cheapflightsfares deal was found by Cheapflights users on 10/21. 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
Mon 11/106:34 amSFO - DEN
Nonstop2h 44mFrontier
Deal found 10/21$121
This Mytrip deal was found by Cheapflights users on 10/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/412:59 amDEN - SFO
1 stop13h 19mFrontier
Fri 12/128:48 amSFO - DEN
Nonstop2h 42mFrontier
Deal found 10/21$122
This Frontier deal was found by Cheapflights users on 10/20. 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.
Sun 11/97:45 amDEN - SFO
Nonstop2h 48mFrontier
Mon 11/103:09 pmSFO - DEN
1 stop5h 09mFrontier
Deal found 10/20$123
This Kiwi.com deal was found by Cheapflights users on 10/21. 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.
Thu 11/137:00 amDEN - SFO
1 stop7h 00mFrontier
Sat 11/152:19 pmSFO - DEN
1 stop5h 40mFrontier
Deal found 10/21$124
This Aunt Betty deal was found by Cheapflights users on 10/21. 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 Aunt Betty is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/56:59 pmDEN - SFO
1 stop5h 49mAlaska Airlines
Fri 12/127:00 amSFO - DEN
1 stop11h 24mAlaska Airlines
Deal found 10/21$125
This Cheapflightsfares deal was found by Cheapflights users on 10/20. 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.
Tue 11/117:30 amDEN - SFO
1 stop10h 13mFrontier
Thu 11/1312:43 pmSFO - DEN
Nonstop2h 48mFrontier
Deal found 10/20$126
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 11/42:15 pmDEN - SFO
1 stop8h 07mFrontier
Tue 11/117:30 amSFO - DEN
1 stop11h 35mFrontier
Deal found 10/21$127
This Kiwi.com deal was found by Cheapflights users on 10/19. 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.
Sat 11/88:45 pmDEN - SFO
1 stop22h 03mFrontier
Sat 11/156:34 amSFO - DEN
Nonstop2h 44mFrontier
Deal found 10/19$128
This Frontier deal was found by Cheapflights users on 10/20. 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 11/710:29 pmDEN - SFO
Nonstop2h 45mFrontier
Wed 11/128:02 amSFO - DEN
Nonstop2h 43mFrontier
Deal found 10/20$129

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 October 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$114
(Frontier)

One-way from

$76
(Frontier)

Popular in

July

Cheapest in

February

Average price

$238

Good round-trip deal

$234 or less

Good one-way deal

$133 or less
Provider with most accurate pricing for Denver Intl-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-San Francisco flights.
Search Deals
From Colorado to San Francisco
Search Deals
One-way flight from Colorado to San Francisco
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($35 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Colorado to San Francisco.
Search Deals
Price to beat on a one-way flight from Colorado to San Francisco.
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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 October 22, 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

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Thu 1/8

12:34 pm-4:32 pm

1 stop4h 58m

San Francisco

Sun 1/11

7:00 am-6:41 pm

1 stop10h 41m

$136

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Tue 2/3

12:34 pm-6:58 pm

1 stop7h 24m

San Francisco

Sun 2/8

8:20 am-6:41 pm

1 stop9h 21m

$136

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Tue 2/3

8:35 am-10:30 am

Nonstop2h 55m

San Francisco

Sun 2/8

9:55 am-5:40 pm

1 stop6h 45m

$143

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Fri 11/14

10:29 pm-12:14 am

Nonstop2h 45m

San Francisco

Sun 11/16

6:33 pm-12:19 pm

1 stop16h 46m

$149

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Sun 2/15

9:20 pm-11:17 pm

Nonstop2h 57m

San Francisco

Thu 2/26

9:20 pm-12:58 am

Nonstop2h 38m

$187

Grand JunctionSan Francisco

GJT - SFO

GJTSFO

Grand Junction Regnl

Fri 11/14

1:15 pm-4:05 pm

1 stop3h 50m

San Francisco

Tue 11/18

5:00 pm-10:37 pm

1 stop4h 37m

$189

Grand JunctionSan Francisco

GJT - SFO

GJTSFO

Grand Junction Regnl

Sat 12/6

5:50 am-9:10 am

1 stop4h 20m

San Francisco

Wed 12/10

5:07 pm-10:47 pm

1 stop4h 40m

$189

Grand JunctionSan Francisco

GJT - SFO

GJTSFO

Grand Junction Regnl

Thu 12/4

1:15 pm-4:12 pm

1 stop3h 57m

San Francisco

Tue 12/9

5:07 pm-10:47 pm

1 stop4h 40m

$189

Grand JunctionSan Francisco

GJT - SFO

GJTSFO

Grand Junction Regnl

Fri 11/14

1:15 pm-4:05 pm

1 stop3h 50m

San Francisco

Thu 11/20

6:00 am-12:39 pm

1 stop5h 39m

$189

Grand JunctionSan Francisco

GJT - SFO

GJTSFO

Grand Junction Regnl

Thu 12/4

1:15 pm-4:12 pm

1 stop3h 57m

San Francisco

Fri 12/12

6:00 am-12:40 pm

1 stop5h 40m

$189

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/21

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, March is the cheapest month in which you can book a flight from Colorado to San Francisco (average of $38). Flying from Colorado to San Francisco in August is currently the most expensive (average of $124). 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 October 22, 2025.

One of the essential ways to save on airfare from Colorado to San Francisco is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the morning could potentially save you up to 53% on airfare.

What is the cheapest day to fly from Colorado to San Francisco?

Use this chart to determine the cheapest time to fly round-trip from Colorado to San Francisco. Price data was last updated on October 19, 2025.

Travelers seeking maximum savings on their Colorado to San Francisco flight should consider departing on Tuesday mornings when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 October 22, 2025.

The most flights from USCO to SFO are scheduled on a Monday (49 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (1 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 119 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 45m. Fly via Alaska Airlines, Southwest, or Frontier 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?

    $77 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on United Airlines and Southwest, with prices starting from $79 and $82, respectively.

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

    While some choose either Colorado Springs - San Francisco or Grand Junction Regnl - 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 Air China (94%), Air Canada (86%) or Emirates (85%) 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 $978, our data indicates the cheapest price to be $70. The most popular route (Denver Intl - San Francisco), is priced around $98.

  • 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, March is the cheapest month in which you can book a flight from Colorado to San Francisco (average of $38). Flying from Colorado to San Francisco in August is currently the most expensive (average of $124). 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
Vacaville
Vallejo
Hollister
Foster City
Union City
Fairfield
Burlingame
Redwood City
Lodi
San Mateo

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Alternative routes for Colorado to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.
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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 October 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$45Average$142FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$142Average$349FlexibilityNo cancel feeOn-time63%
DeltaCheapest$171Average$301FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$171Average$423FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$228Average$369FlexibilityNo cancel feeOn-time71%

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