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$94+ 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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SFO
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
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 June 30, 2025.

Round-trip from

$139
(Frontier)

One-way from

$94
(Priceline)

Popular in

June

Cheapest in

February

Average price

$267

Good round-trip deal

$250 or less

Good one-way deal

$151 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. 10% potential increase in price ($23 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 30, 2025.

This Frontier deal was found by Cheapflights users on 6/28. 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 8/1710:29 pmDEN - SFO
Nonstop2h 50mFrontier
Thu 8/286:26 amSFO - DEN
Nonstop2h 40mFrontier
Deal found 6/28$139
This Southwest deal was found by Cheapflights users on 6/30. 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.
Sat 8/162:50 pmDEN - SFO
Nonstop2h 35mSouthwest
Mon 8/185:30 amSFO - DEN
Nonstop2h 25mSouthwest
Deal found 6/30$157
This Alaska Airlines deal was found by Cheapflights users on 6/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2411:40 amDEN - SFO
1 stop5h 44mAlaska Airlines
Wed 10/18:00 amSFO - DEN
1 stop8h 21mAlaska Airlines
Deal found 6/29$176
This Delta deal was found by Cheapflights users on 6/29. 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.
Tue 8/55:55 pmCOS - SFO
1 stop5h 12mDelta
Wed 8/2012:35 amSFO - COS
1 stop8h 36mDelta
Deal found 6/29$217
This American Airlines deal was found by Cheapflights users on 6/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1410:54 amCOS - SFO
2 stops9h 00mAmerican Airlines
Tue 8/198:40 amSFO - COS
2 stops8h 40mAmerican Airlines
Deal found 6/28$227
This United Airlines deal was found by Cheapflights users on 6/30. 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 8/56:00 pmGJT - SFO
1 stop6h 10mUnited Airlines
Tue 8/264:28 pmSFO - GJT
1 stop4h 42mUnited Airlines
Deal found 6/30$229
This American Airlines deal was found by Cheapflights users on 6/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/108:12 amEGE - SFO
2 stops8h 51mAmerican Airlines
Sat 9/138:00 amSFO - EGE
1 stop9h 26mAmerican Airlines
Deal found 6/30$234
This American Airlines deal was found by Cheapflights users on 6/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/56:59 pmGJT - SFO
1 stop5h 43mAmerican Airlines
Tue 8/2610:16 amSFO - GJT
2 stops9h 45mAmerican Airlines
Deal found 6/28$234
This Southwest deal was found by Cheapflights users on 6/28. 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.
Thu 10/96:15 pmCOS - SFO
1 stop6h 50mSouthwest
Mon 10/134:50 pmSFO - COS
1 stop5h 30mSouthwest
Deal found 6/28$237
This Delta deal was found by Cheapflights users on 6/29. 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.
Fri 7/256:50 pmGJT - SFO
1 stop6h 13mDelta
Mon 7/285:08 pmSFO - GJT
1 stop4h 25mDelta
Deal found 6/29$239
This United Airlines deal was found by Cheapflights users on 6/30. 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 7/153:30 pmMTJ - SFO
1 stop5h 15mUnited Airlines
Sat 7/198:35 amSFO - MTJ
1 stop4h 55mUnited Airlines
Deal found 6/30$249
This Southwest deal was found by Cheapflights users on 6/28. 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.
Sat 9/2712:00 pmHDN - SFO
1 stop5h 25mSouthwest
Mon 9/295:30 amSFO - HDN
1 stop5h 20mSouthwest
Deal found 6/28$254

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 June 30, 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

Sun 8/17

10:29 pm-12:19 am

Nonstop2h 50m

San Francisco

Thu 8/28

6:26 am-10:06 am

Nonstop2h 40m

$139

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Sat 8/16

7:55 pm-9:35 pm

Nonstop2h 40m

San Francisco

Mon 8/18

5:30 am-8:55 am

Nonstop2h 25m

$157

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Wed 9/24

11:40 am-4:24 pm

1 stop5h 44m

San Francisco

Wed 10/1

10:08 am-5:21 pm

1 stop6h 13m

$176

Colorado SpringsSan Francisco

COS - SFO

COSSFO

Colorado Springs

Tue 8/5

5:55 pm-10:07 pm

1 stop5h 12m

San Francisco

Wed 8/20

12:35 am-10:11 am

1 stop8h 36m

$217

Colorado SpringsSan Francisco

COS - SFO

COSSFO

Colorado Springs

Thu 8/14

10:54 am-6:54 pm

2 stops9h 00m

San Francisco

Tue 8/19

8:40 am-6:20 pm

2 stops8h 40m

$227

Grand JunctionSan Francisco

GJT - SFO

GJTSFO

Grand Junction Regnl

Tue 8/5

6:00 pm-11:10 pm

1 stop6h 10m

San Francisco

Tue 8/26

4:28 pm-10:10 pm

1 stop4h 42m

$229

VailSan Francisco

EGE - SFO

EGESFO

Vail Eagle County

Wed 9/10

8:12 am-4:03 pm

2 stops8h 51m

San Francisco

Sat 9/13

8:00 am-6:26 pm

1 stop9h 26m

$234

Grand JunctionSan Francisco

GJT - SFO

GJTSFO

Grand Junction Regnl

Tue 8/5

6:59 pm-11:42 pm

1 stop5h 43m

San Francisco

Tue 8/26

10:16 am-9:01 pm

2 stops9h 45m

$234

Grand JunctionSan Francisco

GJT - SFO

GJTSFO

Grand Junction Regnl

Fri 7/25

6:50 pm-12:03 am

1 stop6h 13m

San Francisco

Mon 7/28

5:08 pm-10:33 pm

1 stop4h 25m

$239

MontroseSan Francisco

MTJ - SFO

MTJSFO

Montrose County

Tue 7/15

3:30 pm-7:45 pm

1 stop5h 15m

San Francisco

Sat 7/19

8:35 am-2:30 pm

1 stop4h 55m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 51 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 $360). 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 June 30, 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 June 30, 2025.

The most flights from USCO to SFO are scheduled on a Monday (49 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (23 on average).

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated June 30, 2025.
See what other customers who have flown with Breeze Airways, Alaska Airlines, and Southwest from Colorado to San Francisco have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Breeze Airways
8.1
Very good
182 reviews

Comfort

8.2

Entertainment

6.6

Overall

8.1

Boarding

8.4

Food

6.8

Crew

8.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Breeze Airways
8.1
Very good
182 reviews
Breeze Airways
8.1
Very good
182 reviews

Comfort

8.2

Entertainment

6.6

Overall

8.1

Boarding

8.4

Food

6.8

Crew

8.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Alaska Airlines
8.0
Very good
10,000 reviews
Breeze Airways
8.1
Very good
182 reviews

Comfort

8.2

Entertainment

6.6

Overall

8.1

Boarding

8.4

Food

6.8

Crew

8.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Southwest
8.0
Very good
4,278 reviews
Breeze Airways
8.1
Very good
182 reviews

Comfort

8.2

Entertainment

6.6

Overall

8.1

Boarding

8.4

Food

6.8

Crew

8.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Delta
8.0
Very good
7,973 reviews
Breeze Airways
8.1
Very good
182 reviews

Comfort

8.2

Entertainment

6.6

Overall

8.1

Boarding

8.4

Food

6.8

Crew

8.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Hawaiian Airlines
7.8
Good
2,529 reviews
Breeze Airways
8.1
Very good
182 reviews

Comfort

8.2

Entertainment

6.6

Overall

8.1

Boarding

8.4

Food

6.8

Crew

8.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!

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 147 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    $94 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Southwest and Hawaiian Airlines, with prices starting from $99 and $103, respectively.

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

    While some choose either Durango La Plata County - 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 Air China (94%), ANA (92%) or Emirates (90%) 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 $2,523, our data indicates the cheapest price to be $108. The most popular route (Denver Intl - San Francisco), is priced around $82.

  • 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 $360). 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 Colorado?

Book flights to Colorado if you plan to visit one of these locations
Roseville
Mountain View
South San Francisco
Livermore
Santa Cruz
Turlock
Manteca
Watsonville
Fairfield
Antioch
Hollister
Milpitas
Sunnyvale
Newark
Alameda
Hayward
Daly City
Campbell
Capitola
Foster City

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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 6 airlines flying from Colorado to San Francisco

Discover the top 6 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 June 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$45Average$130FlexibilityNo cancel feeOn-time62%
Breeze AirwaysCheapest$95Average$106FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$141Average$346FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$154Average$463FlexibilityNo cancel feeOn-time69%
DeltaCheapest$228Average$326FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$264Average$378FlexibilityNo cancel feeOn-time71%

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