HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Colorado

$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 1/6. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — DEN
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Francisco to Colorado with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 November 6, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 11/6. 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 11/128:02 amSFO - DEN
Nonstop2h 43mFrontier
Thu 1/2210:30 pmDEN - SFO
Nonstop2h 55mFrontier
Deal found 11/6$118
This Kiwi.com deal was found by Cheapflights users on 11/6. 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 12/114:07 pmSFO - DEN
Nonstop2h 41mFrontier
Thu 12/1110:29 pmDEN - SFO
Nonstop2h 55mFrontier
Deal found 11/6$119
This Kiwi.com deal was found by Cheapflights users on 11/4. 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 11/2210:03 pmSFO - DEN
1 stop5h 17mFrontier
Tue 11/2510:29 pmDEN - SFO
Nonstop2h 55mFrontier
Deal found 11/4$120
This CheapOair deal was found by Cheapflights users on 11/6. 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 11/209:03 amSFO - DEN
1 stop24h 11mFrontier
Sat 11/2210:29 pmDEN - SFO
Nonstop2h 55mFrontier
Deal found 11/6$122
This Kiwi.com deal was found by Cheapflights users on 11/4. 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 12/249:30 pmSFO - DEN
1 stop21h 01mFrontier
Mon 1/2610:30 pmDEN - SFO
Nonstop2h 55mFrontier
Deal found 11/4$123
This CheapOair deal was found by Cheapflights users on 11/4. 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.
Tue 12/26:00 amSFO - DEN
1 stop15h 29mFrontier
Tue 12/96:30 amDEN - SFO
1 stop11h 21mFrontier
Deal found 11/4$124
This Kiwi.com deal was found by Cheapflights users on 11/3. 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 12/97:35 amSFO - DEN
1 stop6h 11mMultiple Airlines
Tue 12/910:29 pmDEN - SFO
Nonstop2h 55mMultiple Airlines
Deal found 11/3$125
This Kiwi.com deal was found by Cheapflights users on 11/4. 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 12/186:24 amSFO - DEN
Nonstop2h 42mFrontier
Fri 1/2310:30 pmDEN - SFO
Nonstop2h 55mFrontier
Deal found 11/4$126
This Frontier deal was found by Cheapflights users on 11/4. 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 11/198:55 pmSFO - DEN
1 stop11h 01mFrontier
Sun 11/2310:29 pmDEN - SFO
1 stop9h 42mFrontier
Deal found 11/4$127
This Cheapflightsfares deal was found by Cheapflights users on 11/3. 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.
Mon 12/811:38 pmSFO - DEN
1 stop9h 40mFrontier
Thu 12/1112:59 amDEN - SFO
1 stop13h 19mFrontier
Deal found 11/3$128
This Kiwi.com deal was found by Cheapflights users on 11/5. 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 12/66:30 amSFO - DEN
Nonstop2h 42mFrontier
Tue 12/910:00 amDEN - SFO
2 stops12h 11mFrontier
Deal found 11/5$129
This Delta deal was found by Cheapflights users on 11/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/109:59 amSFO - COS
1 stop6h 20mDelta
Wed 12/178:10 amCOS - SFO
1 stop5h 11mDelta
Deal found 11/4$197

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 November 6, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$118
(Frontier)

One-way from

$68
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$237

Good round-trip deal

$214 or less

Good one-way deal

$134 or less
Provider with most accurate pricing for San Francisco-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Denver Intl flights.
Search Deals
From San Francisco to Colorado
Search Deals
One-way flight from San Francisco to Colorado
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($23 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from San Francisco to Colorado.
Search Deals
Price to beat on a one-way flight from San Francisco to Colorado.
Search Deals

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 November 6, 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

Thu 1/22

2:00 pm-5:25 pm

Nonstop2h 25m

Denver Intl

Tue 1/27

8:35 am-10:30 am

Nonstop2h 55m

$137

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Sat 12/6

5:30 am-8:55 am

Nonstop2h 25m

Denver Intl

Sun 12/7

7:45 am-9:30 am

Nonstop2h 45m

$177

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Wed 1/14

7:40 am-3:50 pm

2 stops7h 10m

Denver Intl

Sun 1/18

7:00 am-1:35 pm

1 stop7h 35m

$182

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Thu 1/22

9:23 pm-12:59 am

Nonstop2h 36m

Denver Intl

Tue 1/27

10:08 am-11:58 am

Nonstop2h 50m

$187

San FranciscoColorado Springs

SFO - COS

SFOCOS

San Francisco

Wed 12/10

9:59 am-5:19 pm

1 stop6h 20m

Colorado Springs

Wed 12/17

8:10 am-12:21 pm

1 stop5h 11m

$197

San FranciscoDurango

SFO - DRO

SFODRO

San Francisco

Wed 12/3

6:30 am-2:43 pm

1 stop7h 13m

Durango La Plata County

Sat 12/6

5:15 am-9:35 am

1 stop5h 20m

$198

San FranciscoDurango

SFO - DRO

SFODRO

San Francisco

Tue 1/13

6:25 am-12:36 pm

1 stop5h 11m

Durango La Plata County

Sat 1/17

7:00 am-11:58 am

1 stop5h 58m

$198

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Tue 12/2

7:25 pm-10:45 am

2 stops14h 20m

Denver Intl

Sat 12/6

12:40 pm-6:03 pm

1 stop6h 23m

$205

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Tue 12/9

1:20 pm-6:58 pm

1 stop4h 38m

Denver Intl

Sat 12/13

12:00 pm-10:31 pm

2 stops11h 31m

$215

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Thu 1/22

10:30 am-5:34 pm

1 stop6h 04m

Denver Intl

Tue 1/27

7:00 am-5:49 pm

2 stops11h 49m

$228

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/5

Showing 1-10 of 60 results
1
2
3
...
6

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, February is the cheapest month in which you can book a flight from San Francisco to Colorado (average of $28). Flying from San Francisco to Colorado in June is currently the most expensive (average of $106). 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 November 6, 2025.

It’s optimal to fly from San Francisco to Colorado in the afternoon. By choosing this option you can save up to 13% on the cost of your flight, compared to a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from San Francisco to Colorado. Price data was last updated on November 2, 2025.

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

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 November 6, 2025.

The most flights from SFO to USCO are scheduled on a Thursday (50 on average). You will have fewer flight options on Saturday, 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 November 6, 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
4,241 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Boarding

8.1

Overall

8.0

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
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Boarding

8.1

Overall

8.0

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
7.9
Good
8,001 reviews
Southwest
8.0
Very good
4,241 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Boarding

8.1

Overall

8.0

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
9,007 reviews
Southwest
8.0
Very good
4,241 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Boarding

8.1

Overall

8.0

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
11,040 reviews
Southwest
8.0
Very good
4,241 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Boarding

8.1

Overall

8.0

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
3,115 reviews
Southwest
8.0
Very good
4,241 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Boarding

8.1

Overall

8.0

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, 275 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 25m. Fly via Southwest, United Airlines, or Delta 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 Alaska Airlines, with whom users have recently found tickets for as low as $88. However, be on the lookout for offers from United Airlines and Southwest, 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 - Vail Eagle 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: SWISS (100%), Air China (91%), Asiana Airlines (90%).

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

    While on average a flight from San Francisco to Colorado is generally $831, our data shows the cheapest flight currently is $72. When looking at the most popular route, (San Francisco - Denver Intl), you can expect to pay $58 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, February is the cheapest month in which you can book a flight from San Francisco to Colorado (average of $28). Flying from San Francisco to Colorado in June is currently the most expensive (average of $106). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Francisco to Colorado

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to John F Kennedy Intl flights
Los Angeles to Newark flights
San Francisco to John F Kennedy Intl flights
San Francisco to Los Angeles flights
Los Angeles to Seattle flights
Los Angeles to LaGuardia flights
Los Angeles to Dallas/Fort Worth flights
San Francisco to Las Vegas flights
San Francisco to Newark flights
Los Angeles to Honolulu flights
Ontario to San Francisco flights
Los Angeles to San Francisco flights
San Francisco to Seattle flights
Santa Ana to San Francisco flights
San Francisco to Dallas/Fort Worth flights
San Francisco to Santa Ana flights
San Francisco to Honolulu flights
San Francisco to Ontario flights
Los Angeles to Orlando flights
San Francisco to LaGuardia flights
Ontario to Seattle flights
Los Angeles to Miami flights
Los Angeles to Las Vegas flights
Los Angeles to San Jose flights
Los Angeles to Fort Lauderdale flights
San Jose to Las Vegas flights
San Francisco to O'Hare Intl flights
San Diego to John F Kennedy Intl flights
Los Angeles to Boston flights
Burbank to Las Vegas flights
Los Angeles to O'Hare Intl flights
Ontario to John F Kennedy Intl flights
Los Angeles to Dulles Intl flights
Los Angeles to Sky Harbor Intl flights
Los Angeles to Denver flights
Los Angeles to Hobby flights
Los Angeles to Reagan-National flights
Los Angeles to Kahului flights
Ontario to Newark flights
Los Angeles to Portland flights
Burbank to LaGuardia flights
San Francisco to San Diego flights
San Diego to Newark flights
Santa Ana to Seattle flights
San Francisco to Kahului flights
Los Angeles to Austin flights
Los Angeles to Baltimore flights
San Francisco to Miami flights
Santa Ana to LaGuardia flights
Los Angeles to Salt Lake City flights

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 November 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$38Average$141FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$88Average$100FlexibilityNo cancel feeOn-time88%
SouthwestCheapest$157Average$388FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$169Average$459FlexibilityNo cancel feeOn-time69%
DeltaCheapest$175Average$313FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$176Average$403FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.