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 38% 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 long does it take to fly to San Francisco?

Flight times from Colorado to San Francisco vary, but if you’re flying out of Denver and flying into San Francisco (one of the most popular routes), then the duration is 2h 38m on average. Another popular route from Colorado to San Francisco is flying from Aspen to San Francisco, which will take roughly 2h 39m. Keep in mind that layovers or delays could extend your travel time.

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

As of February 2026, 323 flights take off from Colorado and land in San Francisco each week. The most common flight departure day for this route is Mon, with 16% of weekly flights taking off on this day.

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

As of February 2026, there are 46 flights per day flying from Colorado to San Francisco. The most common time of day flights depart is 7:00PM, with 37% of flights taking off at noon.

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

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

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 February 2026, 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.

$70 Cheap Flights from Colorado to San Francisco in 2026

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

10:29 pm - 12:28 am

DEN

SFO

2h 59mnonstop

6:15 am - 10:02 am

SFO

DEN

2h 47mnonstop

$89Frontier

Wed, Mar 4 - Thu, Mar 5

10:29 pm - 12:28 am

DEN

SFO

2h 59mnonstop

9:04 pm - 12:37 am

SFO

DEN

2h 33mnonstop

$90Frontier

Wed, Mar 11 - Sun, Mar 15

12:52 pm - 4:52 pm

GJT

SFO

5h 00m

1 stop

3:31 pm - 12:07 pm

SFO

GJT

19h 36m

1 stop

$194Multiple Airlines

Tue, Apr 14 - Wed, Apr 22

12:30 pm - 5:56 pm

ASE

SFO

6h 26m

1 stop

6:00 am - 12:56 pm

SFO

ASE

5h 56m

1 stop

$197Delta

Thu, Mar 5 - Sun, Mar 8

12:55 pm - 5:56 pm

EGE

SFO

6h 01m

1 stop

6:00 am - 12:19 pm

SFO

EGE

5h 19m

1 stop

$197Delta

Fri, Mar 6 - Sun, Mar 8

12:52 pm - 2:26 pm

GJT

SFO

26h 34m

1 stop

2:01 pm - 12:07 pm

SFO

GJT

21h 06m

1 stop

$200Multiple Airlines

Tue, Apr 14 - Mon, Apr 20

2:23 pm - 9:23 pm

ASE

SFO

8h 00m

1 stop

11:30 pm - 9:32 am

SFO

ASE

9h 02m

1 stop

$204American Airlines

Sat, Feb 28 - Sun, Mar 1

2:45 pm - 4:35 pm

HDN

SFO

2h 50mnonstop

10:35 am - 2:07 pm

SFO

HDN

2h 32mnonstop

$209United Airlines

Wed, Mar 4 - Wed, Mar 11

4:58 pm - 11:10 pm

GJT

SFO

7h 12m

1 stop

6:00 am - 11:32 am

SFO

GJT

4h 32m

1 stop

$211American Airlines

Tue, Mar 3 - Sat, Mar 7

5:13 pm - 10:55 pm

COS

SFO

6h 42m

1 stop

5:00 am - 12:36 pm

SFO

COS

6h 36m

1 stop

$217United Airlines

Wed, Apr 8 - Mon, Apr 13

Frontier flights from Colorado to San Francisco

Our best Frontier deals on Colorado to San Francisco flight tickets

Frontier

Mar 4

DEN10:29 pmDenver Intl

2h 59m

SFO12:28 amSan Francisco

Mar 5

SFO6:15 amSan Francisco

2h 47m

DEN10:02 amDenver Intl

$89

Frontier

Mar 11

DEN10:29 pmDenver Intl

2h 59m

SFO12:28 amSan Francisco

Mar 15

SFO9:04 pmSan Francisco

2h 33m

DEN12:37 amDenver Intl

$90

Frontier

Mar 3

DEN8:00 pmDenver Intl

3h 01m

SFO10:01 pmSan Francisco

Mar 5

SFO6:15 amSan Francisco

2h 47m

DEN10:02 amDenver Intl

$91

American Airlines flights from Colorado to San Francisco

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

American Airlines

Feb 28

ASE2:23 pmAspen Pitkin County

8h 00m

1 stop

SFO9:23 pmSan Francisco

Mar 1

SFO11:30 pmSan Francisco

9h 02m

1 stop

ASE9:32 amAspen Pitkin County

$204

American Airlines

Feb 18

ASE3:46 pmAspen Pitkin County

9h 01m

1 stop

SFO11:47 pmSan Francisco

Feb 21

SFO11:35 pmSan Francisco

9h 36m

1 stop

ASE10:11 amAspen Pitkin County

$205

American Airlines

Mar 3

GJT4:58 pmGrand Junction Regnl

7h 12m

1 stop

SFO11:10 pmSan Francisco

Mar 7

SFO6:00 amSan Francisco

4h 32m

1 stop

GJT11:32 amGrand Junction Regnl

$211

Fly from

Fly to

Route

Depart

Return

Price

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Wed 3/4

10:29 pm-12:28 am

Nonstop2h 59m

San Francisco

Thu 3/5

6:15 am-10:02 am

Nonstop2h 47m

$89

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Wed 3/11

10:29 pm-12:28 am

Nonstop2h 59m

San Francisco

Sun 3/15

9:04 pm-12:37 am

Nonstop2h 33m

$90

Grand JunctionSan Francisco

GJT - SFO

GJTSFO

Grand Junction Regnl

Tue 4/14

12:52 pm-4:52 pm

1 stop5h 00m

San Francisco

Wed 4/22

3:31 pm-12:07 pm

1 stop19h 36m

$194

AspenSan Francisco

ASE - SFO

ASESFO

Aspen Pitkin County

Thu 3/5

12:30 pm-5:56 pm

1 stop6h 26m

San Francisco

Sun 3/8

6:00 am-12:56 pm

1 stop5h 56m

$197

VailSan Francisco

EGE - SFO

EGESFO

Vail Eagle County

Fri 3/6

12:55 pm-5:56 pm

1 stop6h 01m

San Francisco

Sun 3/8

6:00 am-12:19 pm

1 stop5h 19m

$197

Grand JunctionSan Francisco

GJT - SFO

GJTSFO

Grand Junction Regnl

Tue 4/14

12:52 pm-2:26 pm

1 stop26h 34m

San Francisco

Mon 4/20

2:01 pm-12:07 pm

1 stop21h 06m

$200

AspenSan Francisco

ASE - SFO

ASESFO

Aspen Pitkin County

Sat 2/28

2:23 pm-9:23 pm

1 stop8h 00m

San Francisco

Sun 3/1

11:30 pm-9:32 am

1 stop9h 02m

$204

HaydenSan Francisco

HDN - SFO

HDNSFO

Hayden Yampa Valley

Wed 3/4

2:45 pm-4:35 pm

Nonstop2h 50m

San Francisco

Wed 3/11

10:35 am-2:07 pm

Nonstop2h 32m

$209

Grand JunctionSan Francisco

GJT - SFO

GJTSFO

Grand Junction Regnl

Tue 3/3

4:58 pm-11:10 pm

1 stop7h 12m

San Francisco

Sat 3/7

6:00 am-11:32 am

1 stop4h 32m

$211

Colorado SpringsSan Francisco

COS - SFO

COSSFO

Colorado Springs

Wed 4/8

5:13 pm-10:55 pm

1 stop6h 42m

San Francisco

Mon 4/13

5:00 am-12:36 pm

1 stop6h 36m

$217

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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 April is also cheap. Prices for this month can be found on momondo for an average of $201.

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 Friday when prices can be found for as low as $288. The most expensive day to fly to San Francisco is Monday, with ticket prices averaging around $506.

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 $302. Flights in the morning are often more expensive with an average ticket price of $384.

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 $239 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 $173 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	$148
Fastest flight time	2h 38m
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 $148. The best round-trip flight deal from Colorado to San Francisco found on momondo in the last 72 hours is $247.

The fastest flight from Colorado to San Francisco takes 2h 38m

Direct flights go from Colorado to San Francisco every day.

There is 1 airport in San Francisco. From Colorado there are direct flights to 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 February 2026, 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 Airbus A321neo (17.80% of total bookings). The next most popular plane models are Boeing 737 MAX 8 (13.70%), Boeing 757-200 (9.77%), and Boeing 757-300 (9.51%).

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 $60	Free Cancellation	Rating 5.7 3,052 reviews	Search Frontier flights
Southwest	PriceFrom $142	Free Cancellation	Rating 8.0 4,274 reviews	Search Southwest flights
United Airlines	PriceFrom $160	Free Cancellation	Rating 7.4 9,236 reviews	Search United Airlines flights
Delta	PriceFrom $210	Free Cancellation	Rating 7.9 8,144 reviews	Search Delta flights
American Airlines	PriceFrom $216	Free Cancellation	Rating 7.2 11,222 reviews	Search American Airlines flights

Santa Cruz

Carmel-by-the-Sea

Modesto

Sonoma

Bodega Bay

Roseville

Hayward

Calistoga

Santa Clara

Walnut Creek

Berkeley

Big Sur

Fremont

Half Moon Bay

Daly City

Salinas

Vallejo

Sunnyvale

Livermore

Turlock

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 $70

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 2/28. 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 American Airlines deals on Colorado to San Francisco flight tickets

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

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 April is also cheap. Prices for this month can be found on momondo for an average of $201.

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 Friday when prices can be found for as low as $288. The most expensive day to fly to San Francisco is Monday, with ticket prices averaging around $506.

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 $302. Flights in the morning are often more expensive with an average ticket price of $384.

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, United Airlines, and Delta 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 February 2026, there are 46 flights per day flying from Colorado to San Francisco. The most common time of day flights depart is 7:00PM, with 37% of flights taking off at noon.

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

As of February 2026, 323 flights take off from Colorado and land in San Francisco each week. The most common flight departure day for this route is Mon, with 16% 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

Fly your favorite airline to San Francisco

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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List of cabin classes available on flights landing in San Francisco. Availability may vary depending on flight origin and airline.

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