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$68+ Cheap flights from San Francisco (SFO) to Colorado

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 11/16. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — DEN
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from San Francisco to Colorado

Keep the following information in mind while searching for San Francisco to Colorado flight deals. Data was last updated September 15, 2025.

Round-trip from

$106
(Frontier)

One-way from

$68
(eDestinos)

Popular in

June

Cheapest in

January

Average price

$232

Good round-trip deal

$180 or less

Good one-way deal

$120 or less
From San Francisco to Colorado
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One-way flight from San Francisco to Colorado
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Highest demand for flights based on searches. 10% potential increase in price ($27 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 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 San Francisco to Colorado.
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Price to beat on a one-way flight from San Francisco to Colorado.
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Find flight deals from San Francisco to Colorado

Cheapest flights from San Francisco to Colorado
Explore the most affordable flight options available from San Francisco to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 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.
Fri 10/178:21 pmSFO - DEN
Nonstop2h 41mFrontier
Mon 10/2010:29 pmDEN - SFO
Nonstop2h 45mFrontier
Deal found 9/15$106
This eDestinos 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/39:31 amSFO - DEN
1 stop12h 55mFrontier
Sun 10/56:30 amDEN - SFO
Nonstop2h 45mFrontier
Deal found 9/13$108
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 10/178:21 pmSFO - DEN
Nonstop2h 41mFrontier
Sun 10/198:38 amDEN - SFO
1 stop9h 42mFrontier
Deal found 9/14$109
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.
Thu 10/26:29 amSFO - DEN
Nonstop2h 39mFrontier
Sun 10/56:30 amDEN - SFO
Nonstop2h 45mFrontier
Deal found 9/13$112
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/37:07 pmSFO - DEN
Nonstop2h 41mFrontier
Mon 10/610:29 pmDEN - SFO
Nonstop2h 47mFrontier
Deal found 9/13$113
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.
Thu 10/96:34 amSFO - DEN
Nonstop2h 44mFrontier
Sun 10/128:15 amDEN - SFO
1 stop16h 54mFrontier
Deal found 9/15$116
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2611:57 pmSFO - DEN
1 stop8h 04mFrontier
Sun 10/56:30 amDEN - SFO
Nonstop2h 45mFrontier
Deal found 9/13$117
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.
Wed 9/248:00 amSFO - DEN
1 stop19h 00mFrontier
Sun 9/286:30 amDEN - SFO
Nonstop2h 45mFrontier
Deal found 9/13$118
This Cheapflightsfares deal was found by Cheapflights users on 9/12. 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.
Sat 10/116:44 amSFO - DEN
Nonstop2h 44mFrontier
Sun 10/128:15 amDEN - SFO
1 stop16h 54mFrontier
Deal found 9/12$121
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/274:20 pmSFO - COS
1 stop7h 15mSouthwest
Wed 10/295:30 pmCOS - SFO
1 stop6h 35mSouthwest
Deal found 9/14$177
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/85:30 amSFO - COS
2 stops6h 35mSouthwest
Wed 10/85:30 pmCOS - SFO
1 stop6h 35mSouthwest
Deal found 9/14$182
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/235:15 amSFO - HDN
1 stop5h 15mSouthwest
Mon 12/293:55 pmHDN - SFO
1 stop9h 25mSouthwest
Deal found 9/13$205

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco to Colorado 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 15, 2025.
Use the filters below to find and compare flights from San Francisco to Colorado that are best for you.

Fly from

San Francisco

Fly to

Colorado

Route

Depart

Return

Price

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Sat 10/25

6:40 pm-10:17 pm

Nonstop2h 37m

Denver Intl

Fri 11/28

6:00 am-7:50 am

Nonstop2h 50m

$149

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Sat 10/11

6:40 pm-10:17 pm

Nonstop2h 37m

Denver Intl

Sat 10/18

3:55 pm-5:38 pm

Nonstop2h 43m

$157

San FranciscoColorado Springs

SFO - COS

SFOCOS

San Francisco

Mon 10/27

7:00 am-4:02 pm

1 stop8h 02m

Colorado Springs

Wed 10/29

5:01 pm-11:29 pm

1 stop7h 28m

$177

San FranciscoColorado Springs

SFO - COS

SFOCOS

San Francisco

Mon 10/27

4:20 pm-12:35 am

1 stop7h 15m

Colorado Springs

Wed 10/29

5:30 pm-11:05 pm

1 stop6h 35m

$177

San FranciscoColorado Springs

SFO - COS

SFOCOS

San Francisco

Wed 10/8

5:45 am-1:05 pm

1 stop6h 20m

Colorado Springs

Wed 10/8

5:30 pm-11:05 pm

1 stop6h 35m

$177

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Tue 11/4

2:49 pm-6:24 pm

Nonstop2h 35m

Denver Intl

Sun 11/9

7:45 am-9:35 am

Nonstop2h 50m

$177

San FranciscoColorado Springs

SFO - COS

SFOCOS

San Francisco

Thu 10/23

4:10 pm-10:35 pm

1 stop5h 25m

Colorado Springs

Tue 10/28

6:15 am-9:40 am

1 stop4h 25m

$177

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Sat 10/11

10:40 am-9:00 pm

1 stop9h 20m

Denver Intl

Tue 10/14

5:50 am-12:20 pm

2 stops7h 30m

$182

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Sat 10/25

4:35 pm-10:25 pm

1 stop4h 50m

Denver Intl

Tue 10/28

1:10 pm-8:25 pm

2 stops8h 15m

$182

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Tue 10/14

6:10 am-12:10 pm

1 stop5h 00m

Denver Intl

Tue 10/21

3:00 pm-8:25 pm

2 stops6h 25m

$182

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

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

Have a flexible travel schedule? Discover the best time to fly to Colorado from San Francisco 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 San Francisco to Colorado

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

Currently, October is the cheapest month in which you can book a flight from San Francisco to Colorado (average of $197). Flying from San Francisco to Colorado in March is currently the most expensive (average of $278). 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 SFO to CO?

Find hourly flight availability from San Francisco to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

When flying from San Francisco to Colorado, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from San Francisco to Colorado

Explore weekly flight availability from San Francisco to Colorado. 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 15, 2025.

The most flights from SFO to USCO are scheduled on a Monday (56 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (27 on average).

Reviews of airlines servicing Colorado

Get insights into the airlines that provide service to Colorado. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Colorado. Reviews last updated September 15, 2025.
Read through reviews of airlines operating flights from San Francisco to Colorado, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
8.0
Very good
7,954 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,929 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,172 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Colorado. 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 from for flights from San Francisco to Colorado?

    Located just 11.8 mi from the city center, San Francisco (SFO) is the airport most travelers will use when flying to Colorado from San Francisco.

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

    Within the past month, 286 users have taken a look at flights from San Francisco to Colorado.

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

    There are many flights that can get you from San Francisco to Colorado in 2h 37m. Fly via United Airlines, American Airlines, or Southwest to get the fastest option. Airlines will cover a distance of 964 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $79. However, be on the lookout for offers from Southwest and American Airlines, as they are both options that can get you from San Francisco to Colorado for a low price.

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

    The most popular route from San Francisco to Colorado is San Francisco - Denver Intl. You may also consider San Francisco - Aspen Pitkin County or San Francisco - Durango La Plata County.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from San Francisco to Colorado on time: Asiana Airlines (83%), Air Canada (73%), Virgin Australia (72%).

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

    While on average a flight from San Francisco to Colorado is generally $976, our data shows the cheapest flight currently is $68. When looking at the most popular route, (San Francisco - Denver Intl), you can expect to pay $77 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Francisco to Colorado 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 San Francisco to Colorado?

    Currently, October is the cheapest month in which you can book a flight from San Francisco to Colorado (average of $197). Flying from San Francisco to Colorado in March is currently the most expensive (average of $278). 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

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Alternative routes for San Francisco to Colorado

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from San Francisco to Colorado

Discover the top 6 airlines that operate flights from San Francisco to Colorado. 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 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$38Average$141FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$88Average$100FlexibilityNo cancel feeOn-time88%
SouthwestCheapest$157Average$375FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$164Average$463FlexibilityNo cancel feeOn-time69%
DeltaCheapest$175Average$285FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$176Average$388FlexibilityNo cancel feeOn-time71%

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