Route guide

Cheap Flights from Denver to San Francisco | EazAir

Travellers

Denver to San Francisco flight insights

Average flight time

~2h 41m (estimated)

DEN → SFO

Cheapest month

Based on cached fare history

Cheapest cached price

$95

Checking live fares…

Prices shown may not be current. Last checked: Sep 17, 2026.

Planning a trip from Denver to San Francisco? The average flight time on this route is ~2h 41m (estimated). The lowest fare we have cached for this route is $95 (last checked Sep 17, 2026).

Denver to San Francisco covers a straight-line distance of about 965 miles. Based on that distance, a nonstop flight would take approximately ~2h 41m (estimated). Actual flight time varies by airline, aircraft and routing.

Route Quick Facts

Quick facts for flights from Denver to San Francisco on Eazair
OriginDenver (DEN)
DestinationSan Francisco (SFO)
Average Flight Time
Cheapest Month to Fly
Current Lowest Fare$95
Fares Last CheckedSep 17, 2026

Flight deals from Denver to San Francisco

Nonstop flights from Denver International Airport to San Francisco International Airport typically take around two hours and forty-five minutes to cover the 966-mile distance. Travelers leaving the Rocky Mountains arrive at the edge of the Pacific Ocean shortly after passing over the Sierra Nevada range. Early morning departures out of Colorado often provide smooth rides and get you into Northern California before lunchtime. United Airlines operates a massive hub in Colorado and runs multiple daily direct routes into their Pacific coast headquarters in San Mateo County. Frontier Airlines also provides direct service from Denver to San Francisco, catering to passengers looking for a low-cost carrier option for this specific western corridor. Southwest Airlines frequently operates routes connecting these two hubs, though some itineraries might include a short layover in Las Vegas or Salt Lake City. Peak travel for the Denver to San Francisco route generally occurs during the late spring and summer months, particularly from May through August when California coastal weather is highly sought after. September and October remain busy on this flight path as corporate travel resumes and autumn conventions take place near the Moscone Center. To avoid the heaviest crowds at the TSA checkpoints at DIA, consider booking your Bay Area trip during the shoulder season months of late January through early March.

View of San Francisco, a popular flight destination from Denver

About San Francisco

Popular areas to know in San Francisco include Mission District, North Beach, and Hayes Valley.

A Mediterranean climate, though famously cool and foggy in summer due to marine influence.

Frequently asked questions

How long does a direct flight from Denver to San Francisco take?
A nonstop flight from Denver to San Francisco averages about two hours and forty-five minutes, covering roughly 966 air miles between the two cities.
Which airlines offer direct flights from Denver to San Francisco?
United Airlines and Frontier Airlines frequently operate nonstop flights connecting Denver to San Francisco on a daily basis.
What are the primary departure and arrival airports for flights from Denver to San Francisco?
Flights originate at Denver International Airport (DEN) and typically touch down at San Francisco International Airport (SFO).
When is the busiest time of year to fly from Denver to San Francisco?
The summer months of June, July, and August are the most popular times for passengers flying from Denver to San Francisco, leading to fuller cabins.
Are there early morning flights available from Denver to San Francisco?
Yes, major carriers schedule morning departures out of Denver, allowing travelers to land in San Francisco before noon.
What is the best month to book a less crowded flight from Denver to San Francisco?
Late January and February generally see fewer passengers traveling from Denver to San Francisco, making it an ideal time for quieter cabins.
Do I lose or gain time traveling from Denver to San Francisco?
You will gain one hour when flying from Denver to San Francisco, as you travel backward from the Mountain Time Zone into the Pacific Time Zone.
Can I fly a low-cost carrier from Denver to San Francisco?
Frontier Airlines is the primary low-cost carrier providing nonstop service from Denver to San Francisco.
Are layover flights common when traveling from Denver to San Francisco?
While direct flights are plentiful, Southwest and Delta sometimes route Denver to San Francisco passengers through short connections in Las Vegas or Salt Lake City.
What type of weather should I expect when flying from Denver to San Francisco in winter?
When leaving snowy winter conditions in Denver, passengers arriving in San Francisco will typically encounter mild, rainy, and foggy coastal weather.
How early should I arrive at DIA for my flight from Denver to San Francisco?
Travelers should arrive at Denver International Airport at least two hours before their Denver to San Francisco departure, especially during the busy summer and holiday travel periods when security lines are longer.
How far is it from Denver to San Francisco?
The straight-line distance from Denver to San Francisco is about 965 miles.
What ID do I need to fly from Denver to San Francisco?
Since Denver to San Francisco is a domestic US flight, you'll need a REAL ID-compliant driver's license or another TSA-accepted form of ID, such as a valid US passport. A standard, non-compliant driver's license alone is no longer accepted at TSA checkpoints.
What's the weather usually like in San Francisco?
A Mediterranean climate, though famously cool and foggy in summer due to marine influence.

Airline baggage policies

Baggage allowances differ significantly between fare classes (Basic/Light vs. Standard/Flex) and can change over time. Always verify the exact allowance for your specific fare with the airline before you fly.

General airline baggage policy reference
AirlineCabin bagChecked bag
Delta Air Lines1 carry-on + 1 personal item on most fares1 checked bag typically included on Main Cabin and above; Basic Economy usually excludes it
American Airlines1 carry-on + 1 personal item on most fares1 checked bag typically included on Main Cabin and above; Basic Economy usually excludes it
United Airlines1 carry-on + 1 personal item on most fares1 checked bag typically included on Economy and above; Basic Economy usually excludes it
Southwest Airlines1 carry-on + 1 personal item2 checked bags included on every fare — a long-standing, well-known Southwest policy
JetBlue Airways1 personal item on the cheapest (Blue Basic) fare; a carry-on is added on higher faresNot included on Blue Basic; typically included from Blue Plus and above
Alaska Airlines1 carry-on + 1 personal item on most fares1 checked bag typically included on Main and above; Saver fares usually exclude it
Spirit Airlines1 personal item included; a full-sized carry-on is a paid add-onNot included on the base fare — a paid add-on at every fare tier
Frontier Airlines1 personal item included; a full-sized carry-on is a paid add-onNot included on the base fare — a paid add-on at every fare tier

Travel tips

Arrive early for domestic flights

TSA generally recommends arriving at least 2 hours before a domestic departure, more at larger hub airports during peak travel periods.

Pack a mixed carry-on

Keep a change of clothes, chargers, and any essentials in your carry-on rather than only your checked bag, in case of a delay or a bag that doesn't arrive with you.

Ease jet lag on longer routes

On longer cross-country flights, adjusting your sleep schedule a day or two before departure and staying hydrated in flight can reduce jet lag on arrival.

Screenshot your confirmation

Save a screenshot or PDF of your booking confirmation and boarding pass before you travel, in case you lose signal or battery at the airport.

Check in online when it opens

Most airlines open online check-in 24 hours before departure — checking in early can help with seat selection and, on some airlines, boarding group assignment.