Choose the Economy Bundle for a carry-on and seat selection without extra fees.
Pay for bags early online to save money; airport fees are higher.
Planning a trip from Denver to San Francisco? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.
The most affordable time to fly from Denver to San Francisco is generally on a Saturday in September.
Cheapest Route: The Denver to San Francisco route is the most cost-effective.
Booking Time: Book at least 90 days in advance to get the best prices.
Budget Airline: Frontier Airlines typically offers the cheapest flights for this route.
Flight Type: Direct flights are generally more expensive, consider flights with layovers to save money.
Flight Type: Direct flights are typically more expensive, consider flights with layovers for savings.
This feature is powered by ChatGPT: an OpenAI-developed artificial intelligence model trained with KAYAK proprietary data and third-party data not verified by KAYAK.
Low season | June |
---|---|
High season | July |
Cheapest flight | $48 |
Direct departures
Denver Intl to San Francisco
Monday
ANA, Air Canada, Air New Zealand, +8 more
ANA, Air Canada, +9 more
7
8
Tuesday
ANA, Air Canada, Air New Zealand, +7 more
ANA, Air Canada, +8 more
6
7
Wednesday
ANA, Air Canada, Air China, +9 more
ANA, Air Canada, +10 more
8
9
Thursday
ANA, Air Canada, Air New Zealand, +7 more
ANA, Air Canada, +8 more
6
7
Friday
ANA, Air Canada, Air New Zealand, +8 more
ANA, Air Canada, +9 more
7
8
Saturday
ANA, Air Canada, Air China, +8 more
ANA, Air Canada, +9 more
7
8
Sunday
ANA, Air Canada, Air New Zealand, +7 more
ANA, Air Canada, +8 more
6
7
Direct returns
San Francisco to Denver Intl
Monday
ANA, Air Canada, Air New Zealand, +8 more
ANA, Air Canada, +9 more
7
8
Tuesday
ANA, Air Canada, Air New Zealand, +7 more
ANA, Air Canada, +8 more
6
7
Wednesday
ANA, Air Canada, Air China, +9 more
ANA, Air Canada, +10 more
8
9
Thursday
ANA, Air Canada, Air New Zealand, +7 more
ANA, Air Canada, +8 more
6
7
Friday
ANA, Air Canada, Air New Zealand, +8 more
ANA, Air Canada, +9 more
7
8
Saturday
ANA, Air Canada, Air China, +8 more
ANA, Air Canada, +9 more
7
8
Sunday
ANA, Air Canada, Air New Zealand, +7 more
ANA, Air Canada, +8 more
6
7
First time traveling on Southwest since bag fees were implemented. Usual good service. Just more expensive now.
First time traveling on Southwest since bag fees were implemented. Usual good service. Just more expensive now.
I would have liked to arrive on time - not 5 hours late!
It was a perfect flight in all aspects! Both legs!
Boarding process, crew were good. But the seats were so uncomfortable that was all I could focus on. I literally had to sit forward so that all 3 of us could fit in row. I will try to avoid Southwest in the future for any flights over 60 minutes.
1.5 hour delay, poor service, no compassion from the crew. Terrible experience
Great flight, 47 passengers on a 180 seat plane. Stewardess was pleasant and cheerful.
Great experience flying Southwest. The crew was really kind and helpful, and very friendly with our toddler.
Our flight was diverted from being a non-stop to getting within 150 miles and requiring another plane. We heard 4 or 5 different versions from SW as to why we had to stop, then wait for a replacement plane. Five hour delay, weather did not come up as a single excuse.... communication was not clear and well explained. No one really took charge!
Plane late from DC to Austin 30 minutes. Crew made up much of the time enroute to San Diego.
I really like open seating. I hate that I've heard this is going away. This is one of the unique things that makes Southwest my goto choice.
Boarded plane and then delayed 1.5 hours while on the plane
My flight was delayed a very short period of time but they did not hold my connecting flight to San Diego, also through United. So they closed the doors before we got off our plane. They would only have to help the door open for another five to ten minutes. So I missed a court deadline for a manditory mediation settlement conference for my client. I had to get an associate to be there in person and be on the phone with him relaying what he needs to do the entire time. The court was very upset with me and so was my client. United cannot be trusted.
Really good 😊 the woman at the gate entrance was a little rude checking in our carry-on but i dont think she worked for the airline, she worked for the airport at sacramento, other than that amazing.
Boarding was mayhem. Late boarding by 15 minutes because of lack of staff (missing 1 flight attendant. We had to wait for an arrival of another plane before we could board). Flight was a little rough, but cannot blame on airlines.
Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁
United out of SFO is having issues with catering so none of our meals were loaded on the plane and no offer of compensation for our tickets purchased was offered.
A bit rush for transit. Food and entertainment are not available
The gate was too far away for the connecting flight
Generally good. The aisles have gotten narrower which can slow down boarding. Flight crew was great! Healthier complimentary snacks would be appreciated. Due to earthquake in San Francisco we had to circle in air space for a bit but then had a smooth landing. I laud the flight crew for their patience ;)
The agents was very rude and they charged me $50 for a carry-on bag saying that it was too big and then I saw someone going on a plane with the same size bag as me
I’m not gonna fly Frontier Airlines because booking is not an option. No water or food is for high price, not equipped for health emergency incompetent crew for emergency services. Cheap airline shows it is cheaper in all service categories. Boarding is the best of all airlines!
Very bad! No good service delayed my second connection flight
Frontier is terrible. Paid for exit row, not given exit row, refused to refund fee.
2 hour delay due to late plane, wrong size plane causing overbooking, and people getting off and on the plane after boarding was completed.
The worst. We never made our connection and they did absolutely nothing to help us at the airport.
I never got to experience the flight because they delayed my first flight and I missed this one. Then Frontier didn't want to help me rebook a flight to get me to my final destination.
The Boarding process in Denver was chaotic, and since the line was so long, we were lined up very far from the gate. If there were any announcements from the gate staff, we didn't hear them. The flight attendants were spectacular. The only negative part of the flight was sitting by a 2 1/2 year old who was unruly and unfortunately had parents that matched his behaviors. Also, the restaurants in Denver on the E concourse, they didn't have food (passengers could only order 1 item on the entire menu) or the restaurants had 12-14 people waiting for orders to be prepared and another 6 people waiting to order. If you have a layover in Denver and need to grab food, be prepared to visit the shops with pre-packaged sandwiches, or you can visit another concourse but it may take a while to transit throughout the airport.
Everything went as planned. Crew was great. Seats were still not that comfortable.
they delayed my flight which ended up, causing my layover flight to leave without me, resulting in me missing a flight and having to stay overnight in Houston international. I got no compensation other than a flight to my original location only a day later. i’ve never experienced such a unprofessional situation
The seats were extremely hard and uncomfortable, even for a budget airline.
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