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

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Denver International to San Francisco Flight Information

Avg. Flight Duration 2h 43m
Flights Arrive in San Francisco
Flights Depart from Denver International
Flight Price $97
Distance 965 miles
Airlines Frontier, United Airlines, Delta

Good to Know

Low Season:
February
Best time to beat the crowds
2%
expected price decrease
High Season:
November
Most popular time to fly
10%
expected price increase
Average Price:
$187
(avg. price over the last 2 weeks)
Good Deal:
$109
or less (round trip)

When to Book Flights from Denver to San Francisco

Estimated round-trip price
Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top Tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $109 or less.
The cheapest flight from Denver to San Francisco was found 23 days before departure, on average.
Book at least 2 weeks before departure in order to get a below-average price.
High season is considered to be October, November and December. The cheapest month to fly is February.
Morning departure is around 112% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Denver to San Francisco Flights

How long does a flight from Denver to San Francisco take?
An average nonstop flight takes 2h 31m, covering a distance of 965 miles.
How many flights are there between Denver and San Francisco?
There are 585 (nonstop) flights between Denver and San Francisco per week, averaging 83 per day.
Which airlines provide the cheapest flights from Denver to San Francisco?
In the past 3 days, the cheapest round-trip tickets were found on Frontier ($97), United Airlines ($97) and Delta ($181).
Do I need a passport to fly between Denver and San Francisco?
No.
Which airlines fly most frequently between Denver and San Francisco?
United Airlines (23 times daily), Air Canada (19 times daily), Air New Zealand (19 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly Denver to San Francisco?
For Denver to San Francisco, Wednesday is the cheapest day to fly on average and Thursday is the most expensive. Flying from San Francisco back to Denver, the best deals are generally found on Tuesday, with Thursday being the most expensive.
Which airports will I be using when flying from Denver to San Francisco?
When flying out of Denver you will be using Denver International, often referred to as Denver Airport. You will be landing at San Francisco, also known as San Francisco Airport.

Book cheap flights from Denver to San Francisco (round-trip)

Airports
Origin
Denver
$97
only
$97
Destination
San Francisco
$97
only
$97
Wed, Jan 30
DEN
Denver International
SFO
San Francisco
2h 59m
Sat, Feb 2
SFO
San Francisco
DEN
Denver International
2h 42m
Trip: 4 days
4.5OkayShow reviews
Overall 4.5 Okay
Based on 597 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.6
Food
4.7
DEN
SFO
Mediocre 3.6

Cons: Too many hiccups on Frontier website. Hidden fees and/or charges for everything. Delayed flights. Unfriendly team.

DEN
SFO
Mediocre 2.0

Pros: Nothing

Cons: Everything

DEN
SFO
Okay 4.3

Cons: Everything. The flights are constantly being delayed. Poor selection of snacks and beverages. If people are going to pay $3 for a can of orange juice. It should be a lot better than concentrate minute maid. There are no business class seats. None of the seats recline on the whole plane. Im still waiting for a voucher from a previously canceled flight.

DEN
SFO
Okay 4.0

Cons: Connecting flight was delayed by one hour!!!!!

DEN
SFO
Mediocre 2.0

Pros: The clerk was accommodating enough to look up other airlines where I could purchase another ticket. She also told me to never trust the alerts or website and to show up on scheduled time. I wish I had known this an hour earlier and $400 later. Thanks Frontier!

Cons: Got alerts from Frontier and checked their website and both said that the flight had been delayed an hour and a half. I showed up an hour before the delayed departure time and the clerk told me that the plane was loading and I would not be able to board. I understand I should have showed up earlier but my rating is based on the dishonesty of the time I was given.

Sat, Apr 6
DEN
Denver International
SFO
San Francisco
2h 47m
Tue, Apr 9
SFO
San Francisco
DEN
Denver International
2h 34m
Trip: 4 days
6.9GoodShow reviews
Overall 6.9 Good
Based on 196 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.5
DEN
SFO
Okay 5.3

Cons: Flight was 65 mins delayed due to mechanical issues. Updates came from flight attendants insisting gate agents update the flight status.

DEN
SFO
Excellent 10.0

Cons: Boarding group is getting huge!!!

DEN
SFO
Mediocre 2.0

Cons: I didn't go on my trip. My course in SF was cancelled and United would n't refund my money or change the dates for my trips because of there basic economy package. They have 3 different economy packages and the economy basic doesn't get refunds and you can't change the flights if needed. It feels like they are banking on increasing there ROI with this basic economy ticket which is 40 -60 dollars cheaper than the next economy package. Intuitively they know people will pick that, but if something comes up the customer is screwed.

DEN
SFO
Good 6.6

Cons: Hold time on tarmac. Over an hour. In a hurry to board people. If they knew they had a delay due to weather they might have done some better planning

DEN
SFO
Good 6.6

Pros: Cool crew

Cons: Delayed flight

Mon, Feb 25
DEN
Denver International
SFO
San Francisco
7h 49m
Sat, Mar 16
SFO
San Francisco
DEN
Denver International
2h 48m
Trip: 19 days
7.9GoodShow reviews
Overall 7.9 Good
Based on 22,595 reviews
Overall
8.1
Boarding
8.1
Comfort
7.8
Crew
8.5
Entertainment
7.7
Food
7.4
ROC
DTW
Mediocre 2.6

Pros: Temperature on the last flight from MSP to RAP was perfect.flight attendant in the back of the plane was OBNOXIOUS!

Cons: Most everything it sucked, okay?

KIN
JFK
Good 7.3

Pros: Friendly crew

Cons: No food was served

STL
LGA
Good 6.3

Cons: The flight was 2 hours delayed.. this cause a lot of inconvienece..

LAS
ATL
Good 7.0

Pros: Friendly staff. Entertainment selection is impressive (though I didn't use it). Drinks and snacks are provided.

Cons: Boarding process was time consuming due to poor organization from Delta. Unloading process takes forever for the same reason. Despite booking at the same time my fiancee and I didn't get seated next to one another.

ATL
RIC
Good 7.0

Pros: Friendly staff. Entertainment selection is impressive (though I didn't use it). Drinks and snacks are provided.

Cons: Boarding process was time consuming due to poor organization from Delta. Unloading process takes forever for the same reason. Despite booking at the same time my fiancee and I didn't get seated next to one another.

Wed, Feb 13
DEN
Denver International
SFO
San Francisco
2h 59m
Tue, Feb 26
SFO
San Francisco
DEN
Denver International
2h 37m
Trip: 14 days
4.5OkayShow reviews
Overall 4.5 Okay
Based on 597 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.6
Food
4.7
DEN
SFO
Mediocre 2.0

Pros: The clerk was accommodating enough to look up other airlines where I could purchase another ticket. She also told me to never trust the alerts or website and to show up on scheduled time. I wish I had known this an hour earlier and $400 later. Thanks Frontier!

Cons: Got alerts from Frontier and checked their website and both said that the flight had been delayed an hour and a half. I showed up an hour before the delayed departure time and the clerk told me that the plane was loading and I would not be able to board. I understand I should have showed up earlier but my rating is based on the dishonesty of the time I was given.

DEN
SFO
Okay 4.0

Cons: Connecting flight was delayed by one hour!!!!!

DEN
SFO
Good 6.0

Cons: It's $40 to bring a carry on... really?

DEN
SFO
Mediocre 2.0

Cons: We missed this flight because our earlier flight was delayed and all frontier would do is tell us that we could “google” flights on other airlines to get us where we needed to go. No hotel voucher for the forced overnight, no refund for the missed leg, nothing. I really don’t understand how this company is in business.

DEN
SFO
Mediocre 2.0

Cons: The crew was rude to the passengers. They charge form 9$ to 40$ for seat selection. Charge for a Carry on bag (anything that doesn't fit under your seat). The flights had maintenance issue, hence delayed. I will absolutely avoid traveling with frontier in the future.

Wed, Mar 13
DEN
Denver International
SFO
San Francisco
2h 47m
Tue, Mar 19
SFO
San Francisco
DEN
Denver International
2h 32m
Trip: 7 days
6.9GoodShow reviews
Overall 6.9 Good
Based on 196 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.5
DEN
SFO
Excellent 8.6

Pros: Good flight with no issues.

Cons: No complaints

DEN
SFO
Excellent 10.0

Pros: Food was great

DEN
SFO
Okay 5.3

Cons: Flight was 65 mins delayed due to mechanical issues. Updates came from flight attendants insisting gate agents update the flight status.

DEN
SFO
Excellent 10.0

Pros: On time!

DEN
SFO
Excellent 10.0

Cons: Boarding group is getting huge!!!

Tue, Apr 9
DEN
Denver International
SFO
San Francisco
2h 47m
Tue, May 7
SFO
San Francisco
DEN
Denver International
2h 39m
Trip: 29 days
6.9GoodShow reviews
Overall 6.9 Good
Based on 196 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.5
DEN
SFO
Excellent 8.0

Cons: The delayed flights and neck pillows.

DEN
SFO
Excellent 10.0

Cons: Boarding group is getting huge!!!

DEN
SFO
Excellent 10.0

Pros: Food was great

DEN
SFO
Okay 5.3

Cons: Flight was 65 mins delayed due to mechanical issues. Updates came from flight attendants insisting gate agents update the flight status.

DEN
SFO
Mediocre 2.0

Cons: I didn't go on my trip. My course in SF was cancelled and United would n't refund my money or change the dates for my trips because of there basic economy package. They have 3 different economy packages and the economy basic doesn't get refunds and you can't change the flights if needed. It feels like they are banking on increasing there ROI with this basic economy ticket which is 40 -60 dollars cheaper than the next economy package. Intuitively they know people will pick that, but if something comes up the customer is screwed.

Tue, Apr 30
DEN
Denver International
SFO
San Francisco
2h 47m
Wed, May 8
SFO
San Francisco
DEN
Denver International
2h 45m
Trip: 9 days
4.5OkayShow reviews
Overall 4.5 Okay
Based on 597 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.6
Food
4.7
DEN
SFO
Mediocre 2.0

Pros: The clerk was accommodating enough to look up other airlines where I could purchase another ticket. She also told me to never trust the alerts or website and to show up on scheduled time. I wish I had known this an hour earlier and $400 later. Thanks Frontier!

Cons: Got alerts from Frontier and checked their website and both said that the flight had been delayed an hour and a half. I showed up an hour before the delayed departure time and the clerk told me that the plane was loading and I would not be able to board. I understand I should have showed up earlier but my rating is based on the dishonesty of the time I was given.

DEN
SFO
Mediocre 2.0

Cons: The crew was rude to the passengers. They charge form 9$ to 40$ for seat selection. Charge for a Carry on bag (anything that doesn't fit under your seat). The flights had maintenance issue, hence delayed. I will absolutely avoid traveling with frontier in the future.

DEN
SFO
Okay 4.3

Cons: Everything. The flights are constantly being delayed. Poor selection of snacks and beverages. If people are going to pay $3 for a can of orange juice. It should be a lot better than concentrate minute maid. There are no business class seats. None of the seats recline on the whole plane. Im still waiting for a voucher from a previously canceled flight.

DEN
SFO
Good 6.0

Cons: It's $40 to bring a carry on... really?

DEN
SFO
Mediocre 3.6

Cons: Too many hiccups on Frontier website. Hidden fees and/or charges for everything. Delayed flights. Unfriendly team.

Wed, May 1
DEN
Denver International
SFO
San Francisco
2h 47m
Wed, May 8
SFO
San Francisco
DEN
Denver International
2h 45m
Trip: 8 days
6.9GoodShow reviews
Overall 6.9 Good
Based on 196 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.5
DEN
SFO
Good 6.6

Cons: Hold time on tarmac. Over an hour. In a hurry to board people. If they knew they had a delay due to weather they might have done some better planning

DEN
SFO
Okay 5.3

Cons: Flight was 65 mins delayed due to mechanical issues. Updates came from flight attendants insisting gate agents update the flight status.

DEN
SFO
Excellent 10.0

Pros: On time!

DEN
SFO
Good 6.6

Pros: Cool crew

Cons: Delayed flight

DEN
SFO
Excellent 8.6

Pros: Good flight with no issues.

Cons: No complaints

Wed, May 1
DEN
Denver International
SFO
San Francisco
2h 43m
Tue, May 7
SFO
San Francisco
DEN
Denver International
2h 34m
Trip: 7 days
4.5OkayShow reviews
Overall 4.5 Okay
Based on 597 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.6
Food
4.7
DEN
SFO
Mediocre 3.6

Cons: Too many hiccups on Frontier website. Hidden fees and/or charges for everything. Delayed flights. Unfriendly team.

DEN
SFO
Mediocre 2.0

Pros: Nothing

Cons: Everything

DEN
SFO
Okay 4.0

Cons: Connecting flight was delayed by one hour!!!!!

DEN
SFO
Mediocre 2.0

Cons: Website would not let me check in the day before or the morning or my flight. There was an error every time and I almost got to the end once. I could not change the time of my transportation and arrived 10 minutes past the check in deadline (an hour prior to the flight taking off). I was refused access to the flight and offered a flight 5 hours later. The staff was rude and not helpful. I had heard negative things about Frontier and now I know why.

DEN
SFO
Good 6.0

Cons: It's $40 to bring a carry on... really?

Sat, Feb 23
DEN
Denver International
SFO
San Francisco
2h 59m
Wed, Feb 27
SFO
San Francisco
DEN
Denver International
2h 43m
Trip: 5 days
4.5OkayShow reviews
Overall 4.5 Okay
Based on 597 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.6
Food
4.7
DEN
SFO
Mediocre 2.0

Cons: We missed this flight because our earlier flight was delayed and all frontier would do is tell us that we could “google” flights on other airlines to get us where we needed to go. No hotel voucher for the forced overnight, no refund for the missed leg, nothing. I really don’t understand how this company is in business.

DEN
SFO
Good 6.0

Cons: It's $40 to bring a carry on... really?

DEN
SFO
Okay 4.0

Cons: Connecting flight was delayed by one hour!!!!!

DEN
SFO
Good 6.0

Pros: THe passengers were well behave during and polite

Cons: The 2 hour flight delay

DEN
SFO
Mediocre 3.6

Cons: Too many hiccups on Frontier website. Hidden fees and/or charges for everything. Delayed flights. Unfriendly team.

Wed, Mar 6
DEN
Denver International
SFO
San Francisco
2h 57m
Sat, Mar 9
SFO
San Francisco
DEN
Denver International
2h 48m
Trip: 4 days
4.5OkayShow reviews
Overall 4.5 Okay
Based on 597 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.6
Food
4.7
DEN
SFO
Good 6.0

Cons: It's $40 to bring a carry on... really?

DEN
SFO
Okay 4.0

Cons: Connecting flight was delayed by one hour!!!!!

DEN
SFO
Mediocre 2.0

Pros: Nothing

Cons: Everything

DEN
SFO
Mediocre 2.0

Cons: Website would not let me check in the day before or the morning or my flight. There was an error every time and I almost got to the end once. I could not change the time of my transportation and arrived 10 minutes past the check in deadline (an hour prior to the flight taking off). I was refused access to the flight and offered a flight 5 hours later. The staff was rude and not helpful. I had heard negative things about Frontier and now I know why.

DEN
SFO
Okay 4.3

Cons: Everything. The flights are constantly being delayed. Poor selection of snacks and beverages. If people are going to pay $3 for a can of orange juice. It should be a lot better than concentrate minute maid. There are no business class seats. None of the seats recline on the whole plane. Im still waiting for a voucher from a previously canceled flight.

Tue, Apr 9
DEN
Denver International
SFO
San Francisco
2h 47m
Mon, Apr 15
SFO
San Francisco
DEN
Denver International
2h 29m
Trip: 7 days
6.9GoodShow reviews
Overall 6.9 Good
Based on 196 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.5
DEN
SFO
Excellent 10.0

Cons: Boarding group is getting huge!!!

DEN
SFO
Excellent 10.0

Pros: Personal entertainment system

DEN
SFO
Excellent 8.0

Cons: The delayed flights and neck pillows.

DEN
SFO
Excellent 10.0

Pros: Food was great

DEN
SFO
Good 6.6

Pros: Cool crew

Cons: Delayed flight

Wed, Mar 13
DEN
Denver International
SFO
San Francisco
2h 47m
Sat, Mar 16
SFO
San Francisco
DEN
Denver International
2h 38m
Trip: 4 days
6.9GoodShow reviews
Overall 6.9 Good
Based on 196 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.5
DEN
SFO
Good 7.6

Pros: The crew and the fact that they at least acted like they cared.

Cons: After UA posted a four hour delay for my original flight, I switched to the next available 1.5 hours later. That flight got delayed and then delayed some more, and by the time I got to SFO, the flight I originally booked, landed about 20 minutes later.

DEN
SFO
Excellent 8.6

Pros: Good flight with no issues.

Cons: No complaints

DEN
SFO
Okay 5.3

Cons: Flight was 65 mins delayed due to mechanical issues. Updates came from flight attendants insisting gate agents update the flight status.

DEN
SFO
Excellent 10.0

Cons: Boarding group is getting huge!!!

DEN
SFO
Good 6.6

Cons: Hold time on tarmac. Over an hour. In a hurry to board people. If they knew they had a delay due to weather they might have done some better planning

Wed, Jul 17
DEN
Denver International
SFO
San Francisco
2h 56m
Tue, Jul 23
SFO
San Francisco
DEN
Denver International
2h 37m
Trip: 7 days
4.5OkayShow reviews
Overall 4.5 Okay
Based on 597 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.6
Food
4.7
DEN
SFO
Mediocre 2.0

Cons: The crew was rude to the passengers. They charge form 9$ to 40$ for seat selection. Charge for a Carry on bag (anything that doesn't fit under your seat). The flights had maintenance issue, hence delayed. I will absolutely avoid traveling with frontier in the future.

DEN
SFO
Mediocre 2.0

Cons: We missed this flight because our earlier flight was delayed and all frontier would do is tell us that we could “google” flights on other airlines to get us where we needed to go. No hotel voucher for the forced overnight, no refund for the missed leg, nothing. I really don’t understand how this company is in business.

DEN
SFO
Mediocre 3.0

Pros: Not to much

Cons: Was like riding a city bus. Even in row one didn't have much room to stretch out. Check in took awhile. Only thing they had going for them was good pilots and staff. But the planes are trash no entertainment, little selection of food and drinks. Don't suggest at all.

DEN
SFO
Mediocre 2.6

Pros: Nothing

Cons: Frontier is the worst airline. No sense of flight time, service is horrible, seats are terrible, flight stinks. And prices are not cheap at all. They fly whenever they like.

DEN
SFO
Okay 4.0

Cons: Connecting flight was delayed by one hour!!!!!

Fri, Mar 29
DEN
Denver International
SFO
San Francisco
2h 48m
Tue, Apr 2
SFO
San Francisco
DEN
Denver International
2h 34m
Trip: 5 days
6.9GoodShow reviews
Overall 6.9 Good
Based on 196 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.5
DEN
SFO
Good 6.6

Pros: Cool crew

Cons: Delayed flight

DEN
SFO
Excellent 10.0

Pros: Personal entertainment system

DEN
SFO
Good 7.6

Pros: The crew and the fact that they at least acted like they cared.

Cons: After UA posted a four hour delay for my original flight, I switched to the next available 1.5 hours later. That flight got delayed and then delayed some more, and by the time I got to SFO, the flight I originally booked, landed about 20 minutes later.

DEN
SFO
Good 6.6

Cons: Hold time on tarmac. Over an hour. In a hurry to board people. If they knew they had a delay due to weather they might have done some better planning

DEN
SFO
Excellent 10.0

Cons: Boarding group is getting huge!!!

Wed, Jun 5
DEN
Denver International
SFO
San Francisco
2h 43m
Sat, Jun 8
SFO
San Francisco
DEN
Denver International
2h 45m
Trip: 4 days
4.5OkayShow reviews
Overall 4.5 Okay
Based on 597 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.6
Food
4.7
DEN
SFO
Mediocre 2.0

Cons: We missed this flight because our earlier flight was delayed and all frontier would do is tell us that we could “google” flights on other airlines to get us where we needed to go. No hotel voucher for the forced overnight, no refund for the missed leg, nothing. I really don’t understand how this company is in business.

DEN
SFO
Mediocre 2.0

Pros: Nothing

Cons: Everything

DEN
SFO
Mediocre 3.0

Pros: Not to much

Cons: Was like riding a city bus. Even in row one didn't have much room to stretch out. Check in took awhile. Only thing they had going for them was good pilots and staff. But the planes are trash no entertainment, little selection of food and drinks. Don't suggest at all.

DEN
SFO
Mediocre 3.6

Cons: Too many hiccups on Frontier website. Hidden fees and/or charges for everything. Delayed flights. Unfriendly team.

DEN
SFO
Good 6.0

Pros: THe passengers were well behave during and polite

Cons: The 2 hour flight delay

Wed, Jul 31
DEN
Denver International
SFO
San Francisco
2h 31m
Tue, Aug 6
SFO
San Francisco
DEN
Denver International
2h 37m
Trip: 7 days
6.9GoodShow reviews
Overall 6.9 Good
Based on 196 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.5
DEN
SFO
Good 6.6

Cons: Hold time on tarmac. Over an hour. In a hurry to board people. If they knew they had a delay due to weather they might have done some better planning

DEN
SFO
Excellent 10.0

Cons: Boarding group is getting huge!!!

DEN
SFO
Excellent 8.0

Cons: The delayed flights and neck pillows.

DEN
SFO
Good 7.6

Pros: The crew and the fact that they at least acted like they cared.

Cons: After UA posted a four hour delay for my original flight, I switched to the next available 1.5 hours later. That flight got delayed and then delayed some more, and by the time I got to SFO, the flight I originally booked, landed about 20 minutes later.

DEN
SFO
Excellent 10.0

Pros: On time!

Wed, Jun 26
DEN
Denver International
SFO
San Francisco
2h 43m
Mon, Jul 8
SFO
San Francisco
DEN
Denver International
2h 25m
Trip: 13 days
4.5OkayShow reviews
Overall 4.5 Okay
Based on 597 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.6
Food
4.7
DEN
SFO
Mediocre 3.0

Pros: Not to much

Cons: Was like riding a city bus. Even in row one didn't have much room to stretch out. Check in took awhile. Only thing they had going for them was good pilots and staff. But the planes are trash no entertainment, little selection of food and drinks. Don't suggest at all.

DEN
SFO
Mediocre 2.0

Cons: Website would not let me check in the day before or the morning or my flight. There was an error every time and I almost got to the end once. I could not change the time of my transportation and arrived 10 minutes past the check in deadline (an hour prior to the flight taking off). I was refused access to the flight and offered a flight 5 hours later. The staff was rude and not helpful. I had heard negative things about Frontier and now I know why.

DEN
SFO
Okay 4.0

Cons: Connecting flight was delayed by one hour!!!!!

DEN
SFO
Good 6.0

Pros: THe passengers were well behave during and polite

Cons: The 2 hour flight delay

DEN
SFO
Mediocre 2.6

Pros: Nothing

Cons: Frontier is the worst airline. No sense of flight time, service is horrible, seats are terrible, flight stinks. And prices are not cheap at all. They fly whenever they like.

Fri, Feb 1
DEN
Denver International
SFO
San Francisco
2h 47m
Mon, Feb 4
SFO
San Francisco
DEN
Denver International
2h 43m
Trip: 4 days
4.5OkayShow reviews
Overall 4.5 Okay
Based on 597 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.6
Food
4.7
DEN
SFO
Mediocre 3.6

Cons: Too many hiccups on Frontier website. Hidden fees and/or charges for everything. Delayed flights. Unfriendly team.

DEN
SFO
Mediocre 2.0

Pros: The clerk was accommodating enough to look up other airlines where I could purchase another ticket. She also told me to never trust the alerts or website and to show up on scheduled time. I wish I had known this an hour earlier and $400 later. Thanks Frontier!

Cons: Got alerts from Frontier and checked their website and both said that the flight had been delayed an hour and a half. I showed up an hour before the delayed departure time and the clerk told me that the plane was loading and I would not be able to board. I understand I should have showed up earlier but my rating is based on the dishonesty of the time I was given.

DEN
SFO
Okay 4.3

Cons: Everything. The flights are constantly being delayed. Poor selection of snacks and beverages. If people are going to pay $3 for a can of orange juice. It should be a lot better than concentrate minute maid. There are no business class seats. None of the seats recline on the whole plane. Im still waiting for a voucher from a previously canceled flight.

DEN
SFO
Mediocre 2.6

Pros: Nothing

Cons: Frontier is the worst airline. No sense of flight time, service is horrible, seats are terrible, flight stinks. And prices are not cheap at all. They fly whenever they like.

DEN
SFO
Mediocre 2.0

Pros: Nothing

Cons: Everything

Thu, Jun 20
DEN
Denver International
SFO
San Francisco
2h 39m
Sat, Jun 29
SFO
San Francisco
DEN
Denver International
2h 45m
Trip: 10 days
6.9GoodShow reviews
Overall 6.9 Good
Based on 196 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.5
DEN
SFO
Excellent 10.0

Pros: On time!

DEN
SFO
Mediocre 2.0

Cons: I didn't go on my trip. My course in SF was cancelled and United would n't refund my money or change the dates for my trips because of there basic economy package. They have 3 different economy packages and the economy basic doesn't get refunds and you can't change the flights if needed. It feels like they are banking on increasing there ROI with this basic economy ticket which is 40 -60 dollars cheaper than the next economy package. Intuitively they know people will pick that, but if something comes up the customer is screwed.

DEN
SFO
Good 7.6

Cons: I was traveling with two kids and they used my phone for shows and I brought another older Oppo phone for the myself. It just wouldn't work with the united app to open up the movies. Was unfortunate because I had two flights.

DEN
SFO
Excellent 10.0

Pros: Food was great

DEN
SFO
Excellent 8.0

Cons: The delayed flights and neck pillows.

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