Cheap flights from Denver to San Francisco (DEN - SFO) from $21

This is the cheapest one-way flight price, found on 9/21. Prices may vary by date and flight preferences.
DEN — SFO
sep. 26 — oct. 31

The best prices from Denver Intl to San Francisco are usually found in February or January, booked 50 days in advance, depart on a Saturday or Wednesday and return on a Saturday

How to find the cheapest flight from Denver (DEN) to San Francisco (SFO)

All the information you need to plan the best DEN to SFO flight in 2023: compare Denver to San Francisco flight prices with the expected peak season, weather and rainfall in San Francisco.

Popular in

June

Cheapest in

February

Round-trip from

$258

One-way from

$21
High demand for flights, 29% potential price rise
Best time to find cheap flights, 32% potential price drop
From Denver Intl to San Francisco
One-way flight from Denver Intl to San Francisco

DEN - SFO

Price

$258 - $437

SFO

Temperature

51.8 - 62.6 °F

SFO

Rainfall

0 - 4.4 inches

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

Leaving on a Friday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 81% on the overall cost on flights from Denver to San Francisco.

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

To save up to 28% on this flight, we recommend booking at least 45 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Denver to San Francisco from $221 1-2 weeks out and tickets from $273 for flights departing within the next 72 hours.

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

Our data shows that February tends to be the cheapest month to fly to San Francisco from Denver. Users have commonly found prices around $224 for the month, but tickets can be as low as $77. Due to multiple factors, prepare for potentially higher prices in June.

When is the cheapest time to fly from Denver to San Francisco (DEN - SFO)?

It’s optimal to fly from Denver to San Francisco in the evening. By choosing this option you can save up to 52% on the cost of your flight, compared to a flight in the afternoon.

Cheap Frontier flights from Denver to San Francisco

Check out some of the cheapest Frontier flights we've come across from Denver to San Francisco. It's recommended that users confirm their flight details before booking.

Cheap Delta flights from Denver to San Francisco

Browse through some of the cheapest Delta flights traveling from Denver to San Francisco. Check back soon if you're not seeing flights that suit your needs.

Cheap Denver to San Francisco flights in September & October 2023

The best prices found for DEN to SFO flights for September, October
These are some of the most attractive deals on flights from Denver to San Francisco in 2023. Check back in a little while for more flight options.

Denver to San Francisco 2023 flight deals

Cheap flights to San Francisco from Denver found for this year
These are some of the most attractive deals on flights from Denver to San Francisco in 2023. Check back in a little while for more flight options.

Non-stop flights to San Francisco from Denver

Save time with Denver to San Francisco direct flight deals
Consider booking one of these non-stop flights heading from Denver to San Francisco. If you're looking for other options for flights from Denver to San Francisco, make sure to update the search form at the top of page.

Denver to San Francisco flights leaving soon

Late deals on return flights to San Francisco from Denver, departing today and this week
Book one of these great deals on flights from Denver to San Francisco. Users should examine the flight details to ensure there are no surprises.

One-way flights to San Francisco from Denver

The cheapest one-way flights from Denver to San Francisco
Some of the best available deals we've found on one-way flights from Denver to San Francisco. Those seeking round-trip flights from Denver to San Francisco should utilize the search form at the the top of the page.

Find flights from Denver to San Francisco within your budget

Use the slider to find flights from Denver to San Francisco that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

$38 - $197

Route

Depart

Return

Price

Denver IntlSan Francisco

DEN - SFO

DENSFO

Denver Intl

sáb. 10/21

Nonstop2h 51m

San Francisco

sáb. 10/28

Nonstop2h 43m

Denver IntlSan Francisco

DEN - SFO

DENSFO

Denver Intl

sáb. 10/28

Nonstop2h 51m

San Francisco

mar. 11/7

Nonstop2h 33m

Denver IntlSan Francisco

DEN - SFO

DENSFO

Denver Intl

mié. 10/4

Nonstop2h 45m

San Francisco

mié. 10/18

Nonstop2h 38m

Denver IntlSan Francisco

DEN - SFO

DENSFO

Denver Intl

sáb. 10/21

Nonstop2h 51m

San Francisco

mar. 10/24

Nonstop2h 33m

Denver IntlSan Francisco

DEN - SFO

DENSFO

Denver Intl

sáb. 10/28

Nonstop2h 51m

San Francisco

mar. 11/7

Nonstop2h 41m

Denver IntlSan Francisco

DEN - SFO

DENSFO

Denver Intl

mié. 10/4

1 stop11h 45m

San Francisco

mié. 10/18

Nonstop2h 38m

Denver IntlSan Francisco

DEN - SFO

DENSFO

Denver Intl

mar. 10/10

Nonstop2h 52m

San Francisco

jue. 10/19

Nonstop2h 34m

Denver IntlSan Francisco

DEN - SFO

DENSFO

Denver Intl

mié. 10/18

1 stop10h 15m

San Francisco

sáb. 10/21

Nonstop2h 38m

Denver IntlSan Francisco

DEN - SFO

DENSFO

Denver Intl

mar. 10/31

1 stop4h 54m

San Francisco

mar. 11/7

1 stop6h 27m

Flights are sorted by cheapest first

Deals found on 9/21

Reviews of airlines servicing San Francisco

Read through reviews of airlines operating flights from Denver to San Francisco, such as Frontier, Delta and United Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
1,393 reviews

Boarding

8.3

Food

7.2

Overall

8.1

Entertainment

7.2

Comfort

8.0

Crew

8.6

Reviews

1 / 10

They lost my luggage on my way to NY and then again on my way to SF, horrible

Alaska Airlines
8.1
Very good
1,393 reviews
Alaska Airlines
8.1
Very good
1,393 reviews

Boarding

8.3

Food

7.2

Overall

8.1

Entertainment

7.2

Comfort

8.0

Crew

8.6

Reviews

1 / 10

They lost my luggage on my way to NY and then again on my way to SF, horrible

Delta
7.9
Good
3,016 reviews
Alaska Airlines
8.1
Very good
1,393 reviews

Boarding

8.3

Food

7.2

Overall

8.1

Entertainment

7.2

Comfort

8.0

Crew

8.6

Reviews

1 / 10

They lost my luggage on my way to NY and then again on my way to SF, horrible

United Airlines
7.4
Good
1,888 reviews
Alaska Airlines
8.1
Very good
1,393 reviews

Boarding

8.3

Food

7.2

Overall

8.1

Entertainment

7.2

Comfort

8.0

Crew

8.6

Reviews

1 / 10

They lost my luggage on my way to NY and then again on my way to SF, horrible

American Airlines
7.2
Good
2,635 reviews
Alaska Airlines
8.1
Very good
1,393 reviews

Boarding

8.3

Food

7.2

Overall

8.1

Entertainment

7.2

Comfort

8.0

Crew

8.6

Reviews

1 / 10

They lost my luggage on my way to NY and then again on my way to SF, horrible

Frontier
5.8
Fair
762 reviews
Alaska Airlines
8.1
Very good
1,393 reviews

Boarding

8.3

Food

7.2

Overall

8.1

Entertainment

7.2

Comfort

8.0

Crew

8.6

Reviews

1 / 10

They lost my luggage on my way to NY and then again on my way to SF, horrible

Related info for your journey

Useful info, stats and facts about Denver to San Francisco flights.

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 40 flights from Denver Intl to San Francisco per day from 4 airlines.

Can I find flights from Denver to San Francisco for under $100 on Cheapflights?

Yes, there are multiple flights from Denver to San Francisco for under $100. The cheapest flight booked recently is on Frontier for just $38, but on average you can expect to pay $65.

Are there nonstop flights from Denver to San Francisco for under $100 on Cheapflights?

Cheapflights has at least 20 direct flights from Denver to San Francisco under $100. A good price for a nonstop flight from Denver to San Francisco is less than $71.

Are there last-minute flights available from Denver to San Francisco for under $100?

There are currently 20+ open flights from Denver to San Francisco within the next 7 days for less than $100.

What days are nonstop flights available from Denver to San Francisco?

Nonstop flights are available for this route on the following days: Tuesday, Thursday, Friday.

How popular is this Denver to San Francisco flight route?

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

31 flight departures from Denver to San Francisco per day on average.
Early Morning (Midnight to 6am) - 13% of flight departures
Morning (6am - Noon) - 58% of flight departures
Afternoon (Noon - 6pm) - 29% of flight departures

How long is the flight from Denver to San Francisco?

Frontier can get you from Denver to San Francisco in just under 2h 51m. Your travel time will be generally consistent. The distance from Denver to San Francisco is about 970 mi. Most flights are nonstop.

What is the cheapest airline to fly from Denver to San Francisco round-trip?

Currently priced at $38, 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. Users have found that Frontier is 83% cheaper than the other options available to this destination.

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

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 (88%), ANA (82%) and Air Canada (77%).

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 $797, our data indicates the cheapest price to be $37. The most popular route (Denver Intl - San Francisco), is priced around $75.

What does DEN to SFO mean?

These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Denver Intl Airport to San Francisco Airport flight would often be abbreviated as a DEN to SFO flight.

Alternative routes for Denver to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Denver to San Francisco

The chart below displays the airlines Cheapflights users traveling from Denver to San Francisco choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$59Average$154FlexibilityNo cancel feeOn-time62%
Search Frontier flights
United AirlinesCheapest$139Average$318FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapest$197Average$386FlexibilityNo cancel feeOn-timeN/A
Search Delta flights

Hourly flight availability from Denver to San Francisco

See what time of day planes typically take off from Denver to San Francisco
17%of flight departuresEarly morningMidnight to 6 am
29%of flight departuresMorning6 am to noon
30%of flight departuresAfternoonNoon to 6 pm
24%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Denver to San Francisco

See how many times per day planes take to the skies headed from Denver to San Francisco
Sunday37daily flights
Monday45daily flights
Tuesday41daily flights
Wednesday42daily flights
Thursday35daily flights
Friday45daily flights
Saturday41daily flights
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