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$68+ 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 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SFO
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap 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 December 12, 2025.

This Expedia deal was found by Cheapflights users on 12/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:35 amDEN - SFO
1 stop9h 36mFrontier
Mon 1/126:05 amSFO - DEN
Nonstop2h 42mFrontier
Deal found 12/11$125
This CheapOair deal was found by Cheapflights users on 12/10. 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.
Wed 12/179:15 pmDEN - SFO
1 stop25h 48mFrontier
Mon 1/266:15 amSFO - DEN
Nonstop2h 47mFrontier
Deal found 12/10$126
This Frontier deal was found by Cheapflights users on 12/10. 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 12/246:35 amDEN - SFO
1 stop9h 36mFrontier
Mon 1/56:24 amSFO - DEN
Nonstop2h 42mFrontier
Deal found 12/10$157
This CheapOair deal was found by Cheapflights users on 12/10. 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.
Wed 12/179:15 pmDEN - SFO
1 stop25h 48mFrontier
Mon 1/56:24 amSFO - DEN
Nonstop2h 42mFrontier
Deal found 12/10$158
This Expedia deal was found by Cheapflights users on 12/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:35 amDEN - SFO
1 stop9h 36mFrontier
Tue 12/308:12 pmSFO - DEN
1 stop11h 43mFrontier
Deal found 12/11$162
This Frontier deal was found by Cheapflights users on 12/10. 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 12/246:35 amDEN - SFO
1 stop9h 36mFrontier
Wed 12/316:24 amSFO - DEN
Nonstop2h 42mFrontier
Deal found 12/10$165
This Kiwi.com deal was found by Cheapflights users on 12/9. 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.
Wed 12/179:15 pmDEN - SFO
1 stop25h 48mFrontier
Tue 12/306:00 amSFO - DEN
1 stop16h 33mFrontier
Deal found 12/9$175
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/314:35 pmMTJ - SFO
Nonstop2h 41mUnited Airlines
Wed 1/146:25 amSFO - MTJ
1 stop7h 07mUnited Airlines
Deal found 12/10$219
This United Airlines deal was found by Cheapflights users on 12/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/304:35 pmMTJ - SFO
Nonstop2h 41mUnited Airlines
Tue 1/62:42 pmSFO - MTJ
1 stop4h 35mUnited Airlines
Deal found 12/11$239
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/224:35 pmMTJ - SFO
Nonstop2h 41mUnited Airlines
Tue 1/136:25 amSFO - MTJ
1 stop5h 05mUnited Airlines
Deal found 12/10$274
This United Airlines deal was found by Cheapflights users on 12/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:23 pmCOS - SFO
1 stop5h 42mUnited Airlines
Wed 1/74:31 pmSFO - COS
1 stop4h 35mUnited Airlines
Deal found 12/9$309
This United Airlines deal was found by Cheapflights users on 12/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/304:35 pmMTJ - SFO
Nonstop2h 41mUnited Airlines
Tue 1/136:25 amSFO - MTJ
1 stop7h 07mUnited Airlines
Deal found 12/11$309

Find 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 December 12, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$97
(Frontier)

One-way from

$68
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$277

Good round-trip deal

$203 or less

Good one-way deal

$137 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. 12% potential increase in price ($32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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 December 12, 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

Tue 2/3

12:34 pm-4:32 pm

1 stop4h 58m

San Francisco

Sun 2/8

10:12 am-6:41 pm

1 stop7h 29m

$176

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Tue 1/20

5:18 am-7:14 am

Nonstop2h 56m

San Francisco

Fri 1/23

4:31 pm-8:12 pm

Nonstop2h 41m

$177

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Sat 1/17

12:30 pm-5:49 pm

1 stop6h 19m

San Francisco

Sun 1/18

10:35 am-5:34 pm

1 stop5h 59m

$183

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Fri 1/16

6:29 am-1:38 pm

1 stop8h 09m

San Francisco

Tue 1/20

10:30 am-5:34 pm

1 stop6h 04m

$183

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Wed 3/11

12:34 pm-10:37 am

1 stop23h 03m

San Francisco

Sun 3/15

6:30 am-11:59 pm

1 stop16h 29m

$183

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Sun 1/25

6:29 am-2:40 pm

1 stop9h 11m

San Francisco

Sun 2/1

4:40 pm-11:25 pm

1 stop5h 45m

$183

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Sat 1/31

12:46 pm-11:30 pm

2 stops11h 44m

San Francisco

Mon 2/2

4:40 pm-11:25 pm

1 stop5h 45m

$188

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Wed 1/14

12:49 pm-11:28 pm

2 stops11h 39m

San Francisco

Sun 1/25

3:30 pm-11:25 pm

1 stop6h 55m

$188

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Fri 1/30

12:46 pm-11:30 pm

2 stops11h 44m

San Francisco

Sun 2/1

4:40 pm-11:25 pm

1 stop5h 45m

$188

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Tue 1/13

12:30 pm-5:49 pm

1 stop6h 19m

San Francisco

Wed 1/14

10:35 am-7:56 pm

2 stops8h 21m

$188

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

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 $35). 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 December 12, 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 afternoon could potentially save you up to 47% 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 December 6, 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 December 12, 2025.

The most flights from USCO to SFO are scheduled on a Thursday (49 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (28 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 109 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 56m. Fly via Alaska Airlines, United Airlines, or Delta 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 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 Emirates (82%), United Airlines (80%) or Air China (79%) 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 $705, our data indicates the cheapest price to be $52. The most popular route (Denver Intl - San Francisco), is priced around $73.

  • 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 $35). 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
South San Francisco
Santa Cruz
Livermore
Turlock
Manteca
Watsonville
Sunnyvale
Santa Clara
San Bruno
Redwood City
Daly City
Vallejo
Hollister
Foster City
Union City
Davis
San Ramon
Burlingame
Milpitas

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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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$24Average$135FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$142Average$349FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$162Average$412FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$220Average$370FlexibilityNo cancel feeOn-time71%
DeltaCheapest$228Average$311FlexibilityNo cancel feeOn-timeN/A

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