To Denver

Cheap Flights from San Francisco to Denver

Browse current best options from San Francisco. Become a member to unlock all deals and get alerts when new deals appear.

Deals from

San Francisco

RatePunk searches hundreds of travel sites at once for deals on flights to Denver

Prices updated 24 days ago

486,190 searches this week

171 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated May 29, 2026.)

Today’s best flight deals from San Francisco to Denver

Explore current cheapest deals departing from San Francisco to Denver

Round trip

Sort by: Cheapest

September 21 - September 28

Cheapest

Best

Earliest

SFO - Denver

$123

$104

Round trip

September 21 - September 22

Best

Earliest

SFO - Denver

$126

$107

Round trip

September 21 - October 5

Earliest

SFO - Denver

$109

$107

Round trip

September 22 - October 5

SFO - Denver

$109

$107

Round trip

September 21 - September 29

Earliest

SFO - Denver

$119

$108

Round trip

September 21 - October 6

Earliest

SFO - Denver

$107

$108

Round trip

September 22 - September 29

SFO - Denver

$123

$108

Round trip

September 22 - October 6

SFO - Denver

$109

$108

Round trip

September 22 - September 28

SFO - Denver

$123

$108

Round trip

October 13 - November 10

Best

SFO - Denver

$125

$108

Round trip

Unlock all 500+ flight deals to Denver and get alerts when great deals appear

Route Intelligence — 486,190 Searches this Week

Insights for flights from San Francisco to Denver

Right now, the share of recent fares from San Francisco to Denver classified as a good price is 0%. Fares for this route are currently above the typical level, with prices typically ranging from $184–$457 and a median of $301. If you are looking for cheap flights from San Francisco to Denver, new deals appear almost daily, so setting a price alert can help you track fare changes effectively.

A typical journey from San Francisco to Denver takes about 7h 11m, including connections. This is a medium-haul route, covering a distance of 1554 kilometers.

When considering how long is the flight from San Francisco to Denver, a meaningful share are non-stop, making up 49.1% of recent fares. For itineraries that do include connections, the median number of stopovers is 2.

The cheapest time to fly from San Francisco to Denver is typically in April, with a median fare of $98. Following closely, May also offers competitive pricing, with a median fare of $128. November is another option for more affordable travel, with a median fare of $261.

How much is a round trip from San Francisco to Denver

Regular price: $94 - $202

Prices for flights from San Francisco to Denver are currently within the regular range.

The regular price range for this route is between $94 and $202. The current lowest deal is $104 with Frontier Airlines, for travel from Sep 21-Sep 28.

now $104

Low $94

High $202

The cheapest time to fly from San Francisco to Denver

The cheapest month to fly from San Francisco to Denver is April, with a median price of $98. The most expensive month is June, with a median price of $495. Prices are generally lower from January to November.

April

Cheapest

Flights from $98

June

Most Expensive

Flights from $495

Jan

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from San Francisco to Denver

Frontier Airlines

Last-minute flights going from San Francisco to Denver

Wed, Jul 1

⌛ Last-Minute

SFO - Denver

San Francisco (SFO) - Denver (DEN)

Frontier Airlines

$223

$221

One-way

Thu, Jul 2

⌛ Last-Minute

SFO - Denver

San Francisco (SFO) - Denver (DEN)

Frontier Airlines

$225

$221

One-way

Sat, Jul 4

⌛ Last-Minute

SFO - Denver

San Francisco (SFO) - Denver (DEN)

Frontier Airlines

$231

$220

One-way

Wed, Jul 8

⌛ Last-Minute

SFO - Denver

San Francisco (SFO) - Denver (DEN)

Frontier Airlines

$215

$212

One-way

Sun, Jul 12

⌛ Last-Minute

SFO - Denver

San Francisco (SFO) - Denver (DEN)

Frontier Airlines

$220

$227

One-way

Mon, Jul 13

⌛ Last-Minute

SFO - Denver

San Francisco (SFO) - Denver (DEN)

Frontier Airlines

$220

$211

One-way

Biggest price drops on these dates for flights from San Francisco to Denver

6 nights

Aug 19 - Aug 25

$221 → $131

41%

6 nights

Aug 5 - Aug 11

$216 → $173

20%

2 nights

Aug 18 - Aug 20

$233 → $191

18%

4 nights

Aug 1 - Aug 5

$231 → $190

18%

Popular Airports to fly from San Francisco to Denver

San Francisco - Denver route insights

💸 Price insights

Recent fares are above the typical level

Recent SFO to DEN fares are above the typical level, with 25% of deals at or below $184.

📅 Best time to fly

Fly in April for the best prices

Historically, April is the cheapest month to fly from SFO to DEN, with a median price of $98.

⏱️ Flight duration

Typically 7h 11m to Denver

The typical flight duration from San Francisco to Denver is 7 hours and 11 minutes.

✈️ Airlines & availability

Frontier Airlines offers direct flights

Frontier Airlines has offered direct flights on the SFO to DEN route, with deals appearing frequently.

🏆 Airline highlight

Frontier Airlines: Best deal at $104

The best recent deal on this route was $104 with Frontier Airlines, found via Skyscanner.

🎯 Booking tip

Deals appear frequently

Deals from San Francisco to Denver appear frequently, with over 1 deal per day historically.

San Francisco main airports to depart from

San Francisco International (SFO)

Cheapest

San Francisco International is a great option for flights to Denver, offering competitive prices.

📍 ~20 km from San Francisco (reachable by car or train)

💸 Flights from ~$104

Denver main airports to arrive at

Denver International (DEN)

Cheapest

Denver International Airport is a great choice for flights from San Francisco to Denver.

📍 ~35 km from city center (reachable by car)

💸 Flights from ~$104

Airports nearby Denver used as alternative

Colorado Springs (COS)

Cheapest

Colorado Springs offers a robust flight schedule and can be a reliable alternative to Denver.

📍 ~110 km from Denver (reachable by car)

💸 Flights from ~$221

Eagle County Regional (EGE)

Eagle County Regional is a primary alternative for travelers located in the western mountains.

📍 ~180 km from Denver (reachable by car)

💸 Flights from ~$379

Aspen–Pitkin County (ASE)

Aspen–Pitkin County provides frequent service to major US hubs, ideal for mountain access.

📍 ~200 km from Denver (reachable by car)

💸 Flights from ~$449

Cheyenne Regional (CYS)

Cheyenne Regional is geographically close to northern Denver and offers easy parking and fast security.

📍 ~150 km from Denver (reachable by car)

💸 Flights from ~$309

Yampa Valley (HDN)

Yampa Valley serves as a viable gateway for the Northwest Colorado region with some business class service.

📍 ~250 km from Denver (reachable by car)

💸 Flights from ~$301

Business & First Class Flight Deals to Denver

43% AI deal score

$3,210

From SFO

Elite

Sep 25

Denver, United States

41% AI deal score

$1,147

Frequently Asked Questions About Flights to Denver

Historically, the optimal booking window for flights from San Francisco to Denver is typically 14-27 days before departure. During this period, the average price for a flight is around $239. Booking within 0-6 days of departure sees a significant increase in price, with an average of $758. For those booking 7-13 days out, the average price is approximately $512, indicating that planning a few weeks ahead can lead to substantial savings.

Based on historical data across the trailing quarter, a good price for a flight from San Francisco to Denver is considered to be $184 or less. The median price for this route over the same period was $301. Prices can go higher, with 75% of fares being $457 or less, so finding a flight at or below the $184 threshold represents a notable saving.

Historically, the cheapest months to fly from San Francisco to Denver are April and May, with median prices of $98 and $128 respectively. November also offers a relatively lower median price of $261. The annual median price for this route is $301, making April and May particularly attractive for budget-conscious travelers.

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