Cheap Flights from Denver (DEN) to San Francisco (SFO)

You can find cheap one-way flights from AU$171 and cheap return flights AU$341 DEN to SFO with Expedia. One-way flights typically cost between AU$272 and AU$1,374 and return flights often range between AU$486 and AU$1,594. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when DEN to SFO ticket fares go up or down.

September is typically the cheapest month to fly from Denver, CO (DEN-Denver Intl.) to San Francisco, CA (SFO-San Francisco Intl.), with average return fares around AU$377. September often sees lower prices as the summer travel rush ends and before the holiday season begins, leading to reduced demand. Other cheap months to fly from Denver, CO (DEN-Denver Intl.) to San Francisco, CA (SFO-San Francisco Intl.) include February and April.

You have 3 airlines offering direct flights from Denver, CO (DEN-Denver Intl.) to San Francisco, CA (SFO-San Francisco Intl.). These include:
* United operates 74 direct flights from Denver, CO (DEN-Denver Intl.) to San Francisco, CA (SFO-San Francisco Intl.) every week.
* Southwest Airlines operates 26 direct flights from Denver, CO (DEN-Denver Intl.) to San Francisco, CA (SFO-San Francisco Intl.) every week.
* Frontier Airlines operates 19 direct flights from Denver, CO (DEN-Denver Intl.) to San Francisco, CA (SFO-San Francisco Intl.) every week.

To find a cheap flight from Denver, CO (DEN) to San Francisco, CA (SFO), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.

The best airline to fly with from Denver, CO (DEN-Denver Intl.) to San Francisco, CA (SFO-San Francisco Intl.) will differ from traveler to traveler. If you like to fly early, United offers early morning flights. If price is the most important factor, Frontier Airlines typically offers the lowest fares. Southwest Airlines offers the most daily flights from Denver, CO (DEN-Denver Intl.) to San Francisco, CA (SFO-San Francisco Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.

The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.

You have many options for flying from Denver, CO (DEN-Denver Intl.) to San Francisco, CA (SFO-San Francisco Intl.). There are approximately 17 nonstop flights per day. For even more choices, look at flights that include layovers, as there are around 181 connecting flights per day. Some common connection points include Seattle - Tacoma Intl. (SEA), Los Angeles Intl. (LAX), and Harry Reid Intl. (LAS).

The earliest flight from Denver International Airport (DEN) to San Francisco International Airport (SFO) typically departs around 12:00 AM local time, operated by Frontier Airlines. This is a seasonal service, active in June and July. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.

You'll find the most flights from Denver Intl. (DEN) to San Francisco Intl. (SFO) on Sundays, with around 113 flights available. This gives you plenty of options to choose from for your travel plans. Major airlines on this route include Southwest Airlines, United, and American Airlines. Flight schedules are quite consistent throughout the week, so you'll have a good selection of flights no matter which day you choose to fly.

The most popular departure times for flights from Denver Intl. (DEN) to San Francisco Intl. (SFO) are in the morning, from 6am to 9am. Many major carriers, including Frontier Airlines, Southwest Airlines and Alaska Airlines, offer flights during this window. Many travellers prefer these early morning flights as they allow you to arrive at your destination with plenty of time to start your day.

A non-stop flight from Denver, CO (DEN-Denver Intl.) to San Francisco, CA (SFO-San Francisco Intl.) typically takes around 2 hours 48 minutes. This route covers a distance of approximately 1555 kilometres. If you opt for a flight with one stop, your travel time will be longer, usually around 5 hours. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic, so it's always a good idea to allow for some extra time when planning your journey.

You can fly business class or first class between DEN and SFO. You can fly business class with Frontier Airlines and Delta.

First class cabins are available on:

• Alaska Airlines
• Delta
• United
• American Airlines

It's easy to earn miles on a Denver, CO (DEN-Denver Intl.) to San Francisco, CA (SFO-San Francisco Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.

*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.

If you're planning to travel to San Francisco from Denver Intl. (DEN), you can fly directly into San Francisco Intl. (SFO). Some flights may connect through major hubs like Seattle - Tacoma Intl. (SEA), Portland Intl. (PDX), or San Diego Intl. (SAN) before reaching San Francisco. Compare routes and airports on Expedia to find the best flight options for your travel plans.

Typically, booking a last minute flight from Denver, CO (DEN-Denver Intl.) to San Francisco, CA (SFO-San Francisco Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.

Securing a Denver, CO (DEN-Denver Intl.) to San Francisco, CA (SFO-San Francisco Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.

If you booked your Denver, CO (DEN) to San Francisco, CA (SFO) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.