What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

What is the most punctual flight time for Denver to San Francisco flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

Which airline has the best punctuality record on Denver to San Francisco flights?

Over the last year, United Airlines have had the lowest number of delays on this route, with just 18% of flights being delayed.

How often are flights from Denver to San Francisco delayed?

About 22% of weekly flights between Denver and San Francisco have experienced delays in the past year, with the average delay time being 147 minutes.

How popular is this Denver to San Francisco flight route?

The Denver Intl to San Francisco flight path was viewed by 110 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

How long is the flight from Denver to San Francisco?

Frontier and Alaska Airlines can get you from Denver to San Francisco in just under 2h 57m. Your travel time can differ by up to 9h 02m. The distance from Denver to San Francisco is about 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 flying from Denver to San Francisco round-trip?

Currently priced at $58, Frontier will fly you from Denver to San Francisco and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Southwest and United Airlines - these airlines can fly you to your destination from $142 and $158, respectively. Users have found that Frontier is 74% cheaper than the other options available to this destination.

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

The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $41. However, be on the lookout for offers from Allegiant Air and Southwest, as they are both options that can get you from Denver to San Francisco for a low price.

Weekly flight availability from Denver to San Francisco

The most flights from DEN to SFO are scheduled on a Thursday (48 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (25 on average).

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

What are the cheapest flights from Denver to San Francisco?

Looking for the cheapest flight from Denver to San Francisco? While on average our users pay $906, our data indicates the cheapest price to be $64. The most popular route (Denver Intl - San Francisco), is priced around $74.

What are the most reliable airlines from Denver to San Francisco?

The top 3 most reliable airlines when flying from Denver to San Francisco are Emirates (80%), Air China (79%) and Air New Zealand (79%).

What are the most popular airlines that fly from Denver to San Francisco?

Before booking your flight from Denver to San Francisco check out the most popular airlines for this route: Frontier, United Airlines or Southwest.

Most accurate provider : When it comes to deals on Denver-San Francisco flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Denver-San Francisco flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from Denver-San Francisco flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Denver-San Francisco flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airports do I use to fly from Denver to San Francisco?

If you book a flight from Denver to San Francisco, you will be flying from Denver Intl to San Francisco. Flights to San Francisco (SFO) from Denver Intl (DEN) take 2h 40m for a nonstop flight. There are 35 flights from Denver Intl to San Francisco per day from 3 airlines.

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

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

How can I find direct flights from Denver to San Francisco?

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

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

Yes. Cheapflights offers flight deals from Denver 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.

$70+ Flights from Denver to San Francisco

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Find cheap flights from Denver to San Francisco 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.

Cheapflights Tip: The best prices from Denver Intl to San Francisco are usually found in January or February, booked 81 days in advance, depart on a Friday or Thursday and return on a Friday

Cheap flight deals from Denver to San Francisco

Cheapest flights from Denver to San Francisco
Explore the most affordable flight options available from Denver to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 26, 2025.

Wed 12/3110:29 pmDEN - SFO

2 stops23h 01mFrontier

Wed 1/287:00 amSFO - DEN

Nonstop2h 36mFrontier

Deal found 12/24

$169

Wed 12/246:35 amDEN - SFO

1 stop9h 36mFrontier

Tue 1/67:00 amSFO - DEN

Nonstop2h 42mFrontier

Deal found 12/24

$215

Thu 12/255:43 pmDEN - SFO

1 stop5h 20mFrontier

Tue 1/67:00 amSFO - DEN

Nonstop2h 42mFrontier

Deal found 12/24

$260

Thu 12/255:43 pmDEN - SFO

1 stop5h 20mFrontier

Mon 1/51:29 pmSFO - DEN

1 stop4h 39mFrontier

Deal found 12/24

$273

Mon 12/297:00 amDEN - SFO

1 stop15h 49mFrontier

Wed 1/77:00 amSFO - DEN

Nonstop2h 42mFrontier

Deal found 12/25

$276

Tue 12/3010:29 pmDEN - SFO

Nonstop2h 55mFrontier

Mon 1/511:20 pmSFO - DEN

1 stop12h 01mFrontier

Deal found 12/24

$279

Mon 12/2910:29 pmDEN - SFO

Nonstop2h 55mFrontier

Wed 1/147:00 amSFO - DEN

Nonstop2h 36mFrontier

Deal found 12/24

$288

Wed 12/3110:29 pmDEN - SFO

2 stops23h 01mFrontier

Sun 1/48:33 amSFO - DEN

1 stop18h 25mFrontier

Deal found 12/24

$295

Wed 12/2410:29 pmDEN - SFO

Nonstop2h 55mFrontier

Wed 12/311:29 pmSFO - DEN

1 stop8h 10mFrontier

Deal found 12/24

$301

Best flights from Denver to San Francisco
Discover carefully curated flight deals from Denver to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 26, 2025.

Sat 1/249:44 pmDEN - SFO

Nonstop2h 57mFrontier

Sat 1/317:00 amSFO - DEN

Nonstop2h 36mFrontier

Deal found 12/25

$99

Thu 1/227:00 amDEN - SFO

1 stop11h 59mAlaska Airlines

Sat 1/249:16 amSFO - DEN

1 stop13h 42mAlaska Airlines

Deal found 12/24

$169

Sat 1/318:05 amDEN - SFO

Nonstop3h 00mSouthwest

Sun 2/17:35 amSFO - DEN

Nonstop2h 25mSouthwest

Deal found 12/24

$177

Sat 2/285:30 amDEN - SFO

2 stops9h 18mDelta

Tue 3/310:20 amSFO - DEN

1 stop6h 07mDelta

Deal found 12/24

$188

Wed 1/289:44 pmDEN - SFO

Nonstop2h 57mFrontier

Sat 1/314:46 pmSFO - DEN

1 stop15h 15mFrontier

Deal found 12/25

$110

Tue 1/2712:34 pmDEN - SFO

1 stop6h 14mAlaska Airlines

Sun 2/17:40 pmSFO - DEN

1 stop15h 58mAlaska Airlines

Deal found 12/25

$176

Wed 1/149:20 pmDEN - SFO

1 stop11h 28mFrontier

Sat 1/172:24 pmSFO - DEN

1 stop8h 44mFrontier

Deal found 12/25

$162

Mon 3/26:40 amDEN - SFO

1 stop8h 08mDelta

Tue 3/310:20 amSFO - DEN

2 stops9h 46mDelta

Deal found 12/24

$188

Fri 1/235:09 pmDEN - SFO

1 stop6h 54mAlaska Airlines

Tue 1/275:02 pmSFO - DEN

1 stop5h 56mAlaska Airlines

Deal found 12/24

$176

Fri 1/96:10 amDEN - SFO

Nonstop2h 53mFrontier

Sun 1/116:05 amSFO - DEN

Nonstop2h 42mFrontier

Deal found 12/25

$166

Wed 1/217:00 amDEN - SFO

1 stop8h 00mAlaska Airlines

Sat 1/242:30 pmSFO - DEN

1 stop8h 05mAlaska Airlines

Deal found 12/24

$186

Wed 1/217:00 amDEN - SFO

1 stop8h 00mAlaska Airlines

Wed 1/282:25 pmSFO - DEN

1 stop8h 10mAlaska Airlines

Deal found 12/24

$186

Last-minute flights from Denver to San Francisco
Discover last-minute flight deals from Denver to San Francisco. Data last updated December 26, 2025 and is based on user searches.

Wed 1/74:04 pmDEN - SFO

Nonstop2h 55mFrontier

Tue 1/137:00 amSFO - DEN

Nonstop2h 36mFrontier

Deal found 12/24

$86

Tue 1/136:48 pmDEN - SFO

Nonstop2h 58mFrontier

Sat 1/3111:03 amSFO - DEN

1 stop7h 16mFrontier

Deal found 12/24

$97

Thu 1/2210:29 pmDEN - SFO

Nonstop2h 59mFrontier

Wed 1/287:00 amSFO - DEN

Nonstop2h 36mFrontier

Deal found 12/24

$93

Fri 1/2310:29 pmDEN - SFO

Nonstop2h 59mFrontier

Sun 1/256:15 amSFO - DEN

Nonstop2h 47mFrontier

Deal found 12/25

$87

Fri 1/2310:29 pmDEN - SFO

Nonstop2h 59mFrontier

Fri 1/306:15 amSFO - DEN

Nonstop2h 47mFrontier

Deal found 12/26

$88

Fri 1/236:56 amDEN - SFO

1 stop15h 08mFrontier

Tue 1/277:00 amSFO - DEN

Nonstop2h 36mFrontier

Deal found 12/24

$100

Sat 1/249:44 pmDEN - SFO

Nonstop2h 57mFrontier

Sat 1/317:00 amSFO - DEN

Nonstop2h 36mFrontier

Deal found 12/25

$99

Sun 1/2510:29 pmDEN - SFO

Nonstop2h 59mFrontier

Thu 1/296:15 amSFO - DEN

Nonstop2h 47mFrontier

Deal found 12/24

$96

Wed 1/285:11 pmDEN - SFO

1 stop23h 45mFrontier

Sun 2/16:15 amSFO - DEN

Nonstop2h 47mFrontier

Deal found 12/25

$98

Thu 1/2910:29 pmDEN - SFO

Nonstop2h 59mFrontier

Sun 2/16:15 amSFO - DEN

Nonstop2h 47mFrontier

Deal found 12/25

$94

Sat 1/319:44 pmDEN - SFO

Nonstop2h 57mFrontier

Wed 2/49:44 amSFO - DEN

1 stop5h 10mFrontier

Deal found 12/24

$91

One-way flights from Denver to San Francisco
Search for one-way flight options from Denver to San Francisco. Find affordable one-way fares based on user searches. Data last updated December 26, 2025.

Wed 1/289:44 pmDEN - SFO

1 stop19h 12mFrontier

Deal found 12/25

$70

Sat 1/249:44 pmDEN - SFO

Nonstop2h 57mFrontier

Deal found 12/25

$71

Thu 1/296:00 amDEN - SFO

1 stop12h 54mFrontier

Deal found 12/25

$72

Sat 3/76:11 pmDEN - SFO

Nonstop2h 58mFrontier

Deal found 12/26

$75

Mon 3/27:00 amDEN - SFO

1 stop8h 23mFrontier

Deal found 12/26

$77

Sat 1/318:04 amDEN - SFO

1 stop7h 18mAlaska Airlines

Deal found 12/25

$78

Sat 1/249:05 pmDEN - SFO

Nonstop2h 53mUnited Airlines

Deal found 12/24

$79

Fri 1/166:50 amDEN - SFO

1 stop5h 36mFrontier

Deal found 12/25

$80

Mon 1/126:05 pmDEN - SFO

1 stop5h 20mFrontier

Deal found 12/25

$81

Mon 1/263:46 pmDEN - SFO

1 stop6h 37mFrontier

Deal found 12/25

$82

Thu 1/86:10 amDEN - SFO

Nonstop2h 53mFrontier

Deal found 12/25

$83

Find flight deals from Denver to San Francisco

Most accurate provider	CheapOair 3 stars
Most trusted provider	CheapOair 3 stars
Round-trip from	$86 (Super.com)
One-way from	$70 (Cheapflightsfares)
Popular in	December
Cheapest in	January
Average price	$287
Good round-trip deal	$238 or less
Good one-way deal	$148 or less

Provider with most accurate pricing for Denver Intl-San Francisco flight deals.

Search Deals

Provider most trusted by Cheapflights users for Denver Intl-San Francisco flights.

Search Deals

From Denver Intl to San Francisco

Search Deals

One-way flight from Denver Intl to San Francisco

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($14 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Price to beat on a round-trip flight from Denver Intl to San Francisco.

Search Deals

Price to beat on a one-way flight from Denver Intl to San Francisco.

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Sat 1/24

9:44 pm-11:41 pm

Nonstop2h 57m

San Francisco

Sat 1/31

7:00 am-10:36 am

Nonstop2h 36m

$99

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Wed 1/28

9:44 pm-11:41 pm

Nonstop2h 57m

San Francisco

Sat 1/31

4:46 pm-9:01 am

1 stop15h 15m

$110

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Wed 1/14

9:20 pm-7:48 am

1 stop11h 28m

San Francisco

Sat 1/17

2:24 pm-12:08 am

1 stop8h 44m

$162

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Fri 1/9

6:10 am-8:03 am

Nonstop2h 53m

San Francisco

Sun 1/11

6:05 am-9:47 am

Nonstop2h 42m

$166

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Thu 1/22

7:00 am-5:59 pm

1 stop11h 59m

San Francisco

Sat 1/24

9:16 am-11:58 pm

1 stop13h 42m

$169

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Tue 1/27

12:34 pm-5:48 pm

1 stop6h 14m

San Francisco

Sun 2/1

7:40 pm-12:38 pm

1 stop15h 58m

$176

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Fri 1/23

5:09 pm-11:03 pm

1 stop6h 54m

San Francisco

Tue 1/27

5:02 pm-11:58 pm

1 stop5h 56m

$176

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Sat 1/31

8:05 am-10:05 am

Nonstop3h 00m

San Francisco

Sun 2/1

7:35 am-11:00 am

Nonstop2h 25m

$177

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Wed 1/21

7:00 am-2:00 pm

1 stop8h 00m

San Francisco

Sat 1/24

2:30 pm-11:35 pm

1 stop8h 05m

$186

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Wed 1/21

7:00 am-2:00 pm

1 stop8h 00m

San Francisco

Wed 1/28

2:25 pm-11:35 pm

1 stop8h 10m

$186

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/25

Showing 1-10 of 23 results

Compare providers for flights from Denver to San Francisco

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to San Francisco in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Cheapflightsfares	Price Accuracy3 stars	Trust Score*2 stars
JustAirTicket	Price Accuracy-	Trust Score*1 star
CheapOair	Price Accuracy3 stars	Trust Score*3 stars
Kiwi.com	Price Accuracy3 stars	Trust Score*3 stars
Justfly.com	Price Accuracy3 stars	Trust Score*3 stars
Cheapfaremart	Price Accuracy-	Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Denver-San Francisco flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Denver-San Francisco flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from Denver-San Francisco flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Denver-San Francisco flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Denver to San Francisco

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

Prices

Airlines

Delays

How far ahead should I book a flight from Denver to San Francisco?

The best time to book flights from Denver to San Francisco is 81 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, March is the cheapest month in which you can book a flight from Denver to San Francisco (average of $38). Flying from Denver to San Francisco in August is currently the most expensive (average of $124). 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 DEN to SFO?

It’s optimal to fly from Denver to San Francisco at noon. By choosing this option you can save up to 24% on the cost of your flight, compared to a flight in the afternoon.

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

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

The best insider tips for Denver to San Francisco flights

Cheapflights partnered with top experts to bring you the best recommendations for your Denver to San Francisco trip

Airlines

Frontier

Frontier's UpFront Plus offers a guaranteed empty middle seat for added comfort.

Frontier's Zone 1 boarding is available with a carry-on purchase or special fare bundle.

United Airlines

United's Economy Plus offers extra legroom seats towards the front of the economy cabin.

United's Polaris Lounges offer showers, napping areas, and dining for premium passengers.

Airports

DEN

Use the A Line train for a quick 37-minute ride from downtown Denver to DEN, avoiding traffic and parking hassles.

SFO

Take BART from SFO to downtown San Francisco in about 40 minutes for an affordable and efficient transit option.

Our travel experts

Marisa Garcia

Expert on Frontier

Harriet Baskas

Expert on United Airlines and SFO

Emily Zemler

Expert on DEN

Reviews of airlines servicing San Francisco

See what other customers who have flown with Southwest, United Airlines, and Frontier from Denver to San Francisco have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,258 reviews

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

4,258 reviews

Southwest

8.0

Very good

4,258 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

United Airlines

7.4

Good

9,114 reviews

Southwest

8.0

Very good

4,258 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Frontier

5.8

Fair

3,069 reviews

Southwest

8.0

Very good

4,258 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Related info for your journey

What airports do I use to fly from Denver to San Francisco?
If you book a flight from Denver to San Francisco, you will be flying from Denver Intl to San Francisco. Flights to San Francisco (SFO) from Denver Intl (DEN) take 2h 40m for a nonstop flight. There are 35 flights from Denver Intl to San Francisco per day from 3 airlines.
How popular is this Denver to San Francisco flight route?
The Denver Intl to San Francisco flight path was viewed by 110 users in the past month. Keep an eye out for changes in search interest prior to high and low season.
How long is the flight from Denver to San Francisco?
Frontier and Alaska Airlines can get you from Denver to San Francisco in just under 2h 57m. Your travel time can differ by up to 9h 02m. The distance from Denver to San Francisco is about 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 flying from Denver to San Francisco round-trip?
Currently priced at $58, Frontier will fly you from Denver to San Francisco and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Southwest and United Airlines - these airlines can fly you to your destination from $142 and $158, respectively. Users have found that Frontier is 74% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from Denver to San Francisco one-way?
The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $41. However, be on the lookout for offers from Allegiant Air and Southwest, as they are both options that can get you from Denver to San Francisco for a low price.
What are the most reliable airlines from Denver to San Francisco?
The top 3 most reliable airlines when flying from Denver to San Francisco are Emirates (80%), Air China (79%) and Air New Zealand (79%).
What are the cheapest flights from Denver to San Francisco?
Looking for the cheapest flight from Denver to San Francisco? While on average our users pay $906, our data indicates the cheapest price to be $64. The most popular route (Denver Intl - San Francisco), is priced around $74.
Can I find deals for flights from Denver to San Francisco that include hotel bookings?
Yes. In addition to deals on Denver to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Denver to San Francisco?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to San Francisco.
Can I find deals for business class flights from Denver to San Francisco?
Yes. Cheapflights offers flight deals from Denver 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 Denver to San Francisco?
Currently, March is the cheapest month in which you can book a flight from Denver to San Francisco (average of $38). Flying from Denver to San Francisco in August is currently the most expensive (average of $124). 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

Roseville

South San Francisco

Santa Cruz

Livermore

Turlock

Manteca

Watsonville

Redwood City

Sunnyvale

San Bruno

Daly City

Santa Clara

San Carlos

Vallejo

Hollister

San Ramon

Foster City

Union City

Davis

Emeryville

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Denver to San Francisco

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$61	Average$177	FlexibilityNo cancel fee	On-time62%
Southwest	Cheapest$143	Average$258	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$163	Average$317	FlexibilityNo cancel fee	On-time69%

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$70+ Cheap flights from Denver to San Francisco (DEN - 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 1/28. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Denver to San Francisco with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Denver Intl to San Francisco are usually found in January or February, booked 81 days in advance, depart on a Friday or Thursday and return on a Friday

Cheap flight deals from Denver to San Francisco

Cheapest flights from Denver to San FranciscoExplore the most affordable flight options available from Denver to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 26, 2025.

Explore the most affordable flight options available from Denver to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 26, 2025.

Find flight deals from Denver to San Francisco

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

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

Compare providers for flights from Denver to San Francisco

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to San Francisco in December.

Best time to book a flight from Denver to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Denver with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Denver to San Francisco

How far ahead should I book a flight from Denver to San Francisco?

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What is the cheapest time of day to fly from DEN to SFO?

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

Weekly flight availability from Denver to San Francisco

How often are flights from Denver to San Francisco delayed?

What is the most punctual flight time for Denver to San Francisco flights?

What day of the week experiences the fewest flight delays on this route?

Which airline has the best punctuality record on Denver to San Francisco flights?

The best insider tips for Denver to San Francisco flights

AI-powered summary based on content written by travel experts. AI can make mistakes.

Cheapflights partnered with top experts to bring you the best recommendations for your Denver to San Francisco trip

Airlines

Frontier

United Airlines

Airports

DEN

SFO

Our travel experts

Reviews of airlines servicing San Francisco

See what other customers who have flown with Southwest, United Airlines, and Frontier from Denver to San Francisco have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Denver 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 airports do I use to fly from Denver to San Francisco?

How popular is this Denver to San Francisco flight route?

How long is the flight from Denver to San Francisco?

What are the cheapest airlines flying from Denver to San Francisco round-trip?

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

What are the most reliable airlines from Denver to San Francisco?

What are the cheapest flights from Denver to San Francisco?

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

How can I find direct flights from Denver to San Francisco?

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

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

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Alternative routes for Denver to San Francisco

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Top 3 airlines flying from Denver to San Francisco

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Cheapest flights from Denver to San Francisco
Explore the most affordable flight options available from Denver to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 26, 2025.