What airlines fly to San Francisco?

Frontier, United Airlines and Southwest are the top three most popular airlines that fly to San Francisco from Colorado according to our data. Frontier is the first choice among our users, with 41% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 6 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

How many flights depart from Colorado to San Francisco on average per day?

As of October 2025, there are 35 flights per day flying from Colorado to San Francisco. The most common time of day flights depart is 11:00AM, with 46% of flights taking off at noon.

What is the cheapest airline that flies from Colorado to San Francisco?

Frontier, Alaska Airlines, and United Airlines are the most popular carriers operating from Colorado to San Francisco

How many flights depart from Colorado to San Francisco on average per week?

As of October 2025, 246 flights take off from Colorado and land in San Francisco each week. The most common flight departure day for this route is Thu, with 20% of weekly flights taking off on this day.

How long does it take to fly to San Francisco?

Flight times from Colorado to San Francisco vary, but if you’re flying out of Montrose and flying into San Francisco (one of the most popular routes), then the duration is 2h 41m on average. Another popular route from Colorado to San Francisco is flying from Denver to San Francisco, which will take roughly 2h 45m. Keep in mind that layovers or delays could extend your travel time.

When did momondo last update prices for flights from Colorado to San Francisco Airport?

Prices for flights from Colorado to San Francisco Airport were last updated today.

How many operators does momondo search for flights from Colorado to San Francisco Airport?

As of October 2025, there are 5 operators available to choose from for flights from Colorado to San Francisco Airport.

How old do you have to be to fly from Colorado to San Francisco Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Colorado to San Francisco Airport.

What documentation or ID do you need to fly to San Francisco Airport?

The travel and health documents required for your trip to San Francisco Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Francisco Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$68 Cheap Flights from Colorado to San Francisco in 2025/26

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Cheap round-trip flights

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6:00 am - 7:53 amDEN-SFO

2h 53mnonstop

6:24 am - 10:06 amSFO-DEN

2h 42mnonstop

$123Frontier

Find Deal

Thu, Dec 11 - Thu, Dec 18

7:45 am - 9:33 amDEN-SFO

2h 48mnonstop

6:34 am - 10:18 amSFO-DEN

2h 44mnonstop

$124Frontier

Find Deal

Thu, Nov 13 - Sun, Nov 16

7:39 pm - 8:47 amDEN-SFO

14h 08m1 stop

9:42 pm - 10:53 amSFO-DEN

12h 11m1 stop

$156Alaska Airlines

Find Deal

Fri, Feb 6 - Mon, Feb 9

8:45 pm - 10:30 pmDEN-SFO

2h 45mnonstop

2:15 pm - 5:45 pmSFO-DEN

2h 30mnonstop

$157Southwest

Find Deal

Thu, Dec 4 - Mon, Dec 8

5:50 am - 9:10 amGJT-SFO

4h 20m1 stop

6:00 am - 12:40 pmSFO-GJT

5h 40m1 stop

$189Delta

Find Deal

Sat, Dec 6 - Wed, Dec 10

6:00 pm - 12:03 amCOS-SFO

7h 03m1 stop

9:59 am - 5:19 pmSFO-COS

6h 20m1 stop

$197Delta

Find Deal

Mon, Dec 8 - Mon, Dec 15

1:38 pm - 7:46 pmDRO-SFO

7h 08m1 stop

2:49 pm - 10:01 pmSFO-DRO

6h 12m1 stop

$200United Airlines

Find Deal

Tue, Nov 11 - Sat, Nov 15

1:42 pm - 7:46 pmGUC-SFO

7h 04m1 stop

5:00 am - 12:33 pmSFO-GUC

6h 33m1 stop

$209United Airlines

Find Deal

Wed, Nov 12 - Sun, Nov 16

6:00 am - 12:05 pmCOS-SFO

7h 05m2 stops

10:10 am - 7:15 pmSFO-COS

8h 05m2 stops

$339Southwest

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Wed, Mar 4 - Sat, Mar 7

1:36 pm - 12:23 pmEGE-SFO

23h 47m2 stops

8:20 am - 4:39 pmSFO-EGE

7h 19m1 stop

$422Alaska Airlines

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Fri, Jan 9 - Mon, Jan 12

Frontier flights from Colorado to San Francisco

Our best Frontier deals on Colorado to San Francisco flight tickets

Frontier

Dec 11

DEN6:00 amDenver Intl

2h 53m

SFO7:53 amSan Francisco

Dec 18

SFO6:24 amSan Francisco

2h 42m

DEN10:06 amDenver Intl

$123

Find similar

Frontier

Nov 13

DEN7:45 amDenver Intl

2h 48m

SFO9:33 amSan Francisco

Nov 16

SFO6:34 amSan Francisco

2h 44m

DEN10:18 amDenver Intl

$124

Find similar

Frontier

Nov 9

DEN7:45 amDenver Intl

2h 48m

SFO9:33 amSan Francisco

Nov 12

SFO8:55 pmSan Francisco

11h 32m

1 stop

DEN9:27 amDenver Intl

$125

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United Airlines flights from Colorado to San Francisco

Our best United Airlines deals on Colorado to San Francisco flight tickets

United Airlines

Nov 11

DRO1:38 pmDurango La Plata County

7h 08m

1 stop

SFO7:46 pmSan Francisco

Nov 15

SFO2:49 pmSan Francisco

6h 12m

1 stop

DRO10:01 pmDurango La Plata County

$200

Find similar

United Airlines

Nov 12

GUC1:42 pmGunnison

7h 04m

1 stop

SFO7:46 pmSan Francisco

Nov 16

SFO5:00 amSan Francisco

6h 33m

1 stop

GUC12:33 pmGunnison

$209

Find similar

United Airlines

Mar 6

HDN4:40 pmHayden Yampa Valley

7h 29m

1 stop

SFO11:09 pmSan Francisco

Mar 10

SFO5:15 amSan Francisco

6h 24m

1 stop

HDN12:39 pmHayden Yampa Valley

$259

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Fly from

Fly to

Route

Depart

Return

Price

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Thu 12/11

6:00 am-7:53 am

Nonstop2h 53m

San Francisco

Thu 12/18

6:24 am-10:06 am

Nonstop2h 42m

$123

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Thu 11/13

7:45 am-9:33 am

Nonstop2h 48m

San Francisco

Sun 11/16

6:34 am-10:18 am

Nonstop2h 44m

$124

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Fri 2/6

7:39 pm-8:47 am

1 stop14h 08m

San Francisco

Mon 2/9

9:42 pm-10:53 am

1 stop12h 11m

$156

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Thu 12/4

8:45 pm-10:30 pm

Nonstop2h 45m

San Francisco

Mon 12/8

2:15 pm-5:45 pm

Nonstop2h 30m

$157

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

6:00 am-12:40 pm

1 stop5h 40m

$189

Colorado SpringsSan Francisco

COS - SFO

COSSFO

Colorado Springs

Mon 12/8

6:00 pm-12:03 am

1 stop7h 03m

San Francisco

Mon 12/15

9:59 am-5:19 pm

1 stop6h 20m

$197

DurangoSan Francisco

DRO - SFO

DROSFO

Durango La Plata County

Tue 11/11

1:38 pm-7:46 pm

1 stop7h 08m

San Francisco

Sat 11/15

2:49 pm-10:01 pm

1 stop6h 12m

$200

GunnisonSan Francisco

GUC - SFO

GUCSFO

Gunnison

Wed 11/12

1:42 pm-7:46 pm

1 stop7h 04m

San Francisco

Sun 11/16

5:00 am-12:33 pm

1 stop6h 33m

$209

Colorado SpringsSan Francisco

COS - SFO

COSSFO

Colorado Springs

Wed 3/4

6:00 am-12:05 pm

2 stops7h 05m

San Francisco

Sat 3/7

10:10 am-7:15 pm

2 stops8h 05m

$339

VailSan Francisco

EGE - SFO

EGESFO

Vail Eagle County

Fri 1/9

1:36 pm-12:23 pm

2 stops23h 47m

San Francisco

Mon 1/12

8:20 am-4:39 pm

1 stop7h 19m

$422

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How to get the cheapest flight ticket from Colorado to San Francisco

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to San Francisco?

If you aren’t able to travel to San Francisco during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $175.

What is the cheapest day to depart on your flight to San Francisco?

The cheapest day to depart from Colorado to San Francisco is on a Thursday when prices can be found for as low as $294. The most expensive day to fly to San Francisco is Tuesday, with ticket prices averaging around $529.

What is the cheapest time of day to depart on your flight to San Francisco?

Our data shows that the cheapest Colorado to San Francisco flights are usually those with departure times at noon. Our users have found flights to San Francisco at noon for as low as $294. Flights in the afternoon are often more expensive with an average ticket price of $418.

What is the cheapest Colorado to San Francisco flight route?

Fly from Denver Intl to San Francisco for the best Colorado - San Francisco flight prices

How far in advance should I book a flight to San Francisco?

You are more likely to see cheaper flights to San Francisco from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $226 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Colorado for as low as $164 on momondo.

What cabin class options are available on Colorado to San Francisco flights?

There are 4 cabin classes available to choose from on Colorado to San Francisco flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Colorado to San Francisco flights?

No. A direct flight is the cheapest option for a flight between Colorado to San Francisco.

Cheap Colorado to San Francisco flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to San Francisco

Best Price Found	$114
Fastest flight time	2h 45m
Direct flights	Every day
Airports in San Francisco	1 airport

The best one-way flight to San Francisco from Colorado in the past 72 hours is $114. The best round-trip flight deal from Colorado to San Francisco found on momondo in the last 72 hours is $233.

The fastest flight from Colorado to San Francisco takes 2h 45m

Direct flights go from Colorado to San Francisco every day.

There is 1 airport near San Francisco: San Francisco (SFO)

Search flight deals

When did momondo last update prices for flights from Colorado to San Francisco Airport?
Prices for flights from Colorado to San Francisco Airport were last updated today.
How many operators does momondo search for flights from Colorado to San Francisco Airport?
As of October 2025, there are 5 operators available to choose from for flights from Colorado to San Francisco Airport.
How old do you have to be to fly from Colorado to San Francisco Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Colorado to San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The travel and health documents required for your trip to San Francisco Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Francisco Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Colorado to San Francisco?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Colorado to San Francisco is Boeing 737 MAX 8 (16.35% of total bookings). The next most popular plane models are Airbus A321neo (15.31%), Boeing 737-800 Passenger/BBJ2 (winglets) (10.87%), and Airbus A320neo (9.76%).

Best airlines flying from Colorado to San Francisco

Compare and see reviews for airlines that fly from Colorado to San Francisco with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $45	Free Cancellation	Rating 5.8 3,124 reviews	Search Frontier flights
Southwest	PriceFrom $142	Free Cancellation	Rating 8.0 4,240 reviews	Search Southwest flights
Delta	PriceFrom $171	Free Cancellation	Rating 7.9 7,994 reviews	Search Delta flights
United Airlines	PriceFrom $173	Free Cancellation	Rating 7.4 9,001 reviews	Search United Airlines flights
American Airlines	PriceFrom $228	Free Cancellation	Rating 7.2 11,032 reviews	Search American Airlines flights

Santa Cruz

Carmel-by-the-Sea

Modesto

Sonoma

Bodega Bay

Roseville

Calistoga

Hayward

Big Sur

Santa Clara

Daly City

Fremont

Berkeley

Vallejo

Walnut Creek

Half Moon Bay

Salinas

Turlock

Livermore

Pacific Grove

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to San Francisco?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Colorado to San Francisco. momondo saves you time and could save you money on your trip.

Can I find flights from Colorado to San Francisco with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Colorado to San Francisco flights to just show those with flexible booking policies.

How can momondo help me find flights from Colorado to San Francisco?

Once you have performed a search for Colorado to San Francisco flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Colorado to San Francisco right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to San Francisco from Colorado. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your San Francisco trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Cheap flights from Colorado to San Francisco from $76

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to San Francisco departing on 1/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Frontier flights from Colorado to San Francisco

Our best Frontier deals on Colorado to San Francisco flight tickets

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Our best United Airlines deals on Colorado to San Francisco flight tickets

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Use the filters below to find and compare flights from Colorado to San Francisco that are best for you.

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How to get the cheapest flight ticket from Colorado to San Francisco

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Francisco?

If you aren’t able to travel to San Francisco during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $175.

What is the cheapest day to depart on your flight to San Francisco?

The cheapest day to depart from Colorado to San Francisco is on a Thursday when prices can be found for as low as $294. The most expensive day to fly to San Francisco is Tuesday, with ticket prices averaging around $529.

What is the cheapest time of day to depart on your flight to San Francisco?

Our data shows that the cheapest Colorado to San Francisco flights are usually those with departure times at noon. Our users have found flights to San Francisco at noon for as low as $294. Flights in the afternoon are often more expensive with an average ticket price of $418.

What is the cheapest Colorado to San Francisco flight route?

Fly from Denver Intl to San Francisco for the best Colorado - San Francisco flight prices

How far in advance should I book a flight to San Francisco?

What cabin class options are available on Colorado to San Francisco flights?

There are 4 cabin classes available to choose from on Colorado to San Francisco flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Colorado to San Francisco flights?

No. A direct flight is the cheapest option for a flight between Colorado to San Francisco.

What is the cheapest airline that flies from Colorado to San Francisco?

Frontier, Alaska Airlines, and United Airlines are the most popular carriers operating from Colorado to San Francisco

What airlines fly to San Francisco?

How many flights depart from Colorado to San Francisco on average per day?

As of October 2025, there are 35 flights per day flying from Colorado to San Francisco. The most common time of day flights depart is 11:00AM, with 46% of flights taking off at noon.

How many flights depart from Colorado to San Francisco on average per week?

As of October 2025, 246 flights take off from Colorado and land in San Francisco each week. The most common flight departure day for this route is Thu, with 20% of weekly flights taking off on this day.

How long does it take to fly to San Francisco?

Cheap Colorado to San Francisco flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to San Francisco

Best Price Found

Fastest flight time

Direct flights

Airports in San Francisco

When did momondo last update prices for flights from Colorado to San Francisco Airport?

How many operators does momondo search for flights from Colorado to San Francisco Airport?

How old do you have to be to fly from Colorado to San Francisco Airport?

What documentation or ID do you need to fly to San Francisco Airport?

What is the most popular plane model from Colorado to San Francisco?

Best airlines flying from Colorado to San Francisco

Compare and see reviews for airlines that fly from Colorado to San Francisco with momondo

Traveling to a place near San Francisco?

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to San Francisco?

Can I find flights from Colorado to San Francisco with flexible booking policies on momondo?

How can momondo help me find flights from Colorado to San Francisco?

I’m not ready to book a flight from Colorado to San Francisco right now. Can momondo alert me if prices change?

An easier way to manage your San Francisco trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing California