Denver to San Francisco DEN → SFO
Denver International Airport (DEN) → San Francisco International Airport (SFO)
The cheapest return found recently is $208 with Frontier Airlines, 4 Nov – 7 Nov, found yesterday. The cheapest one-way found recently is $68 with Frontier Airlines, 5 Jan 2027, found 4 days ago.
Return
Not enough comparable prices yet for a usual return price.
Cheapest return found recently
$208
4 Nov – 7 Nov · Frontier Airlines
Denver International Airport (DEN) → San Francisco International Airport (SFO)
Leaves 4:17 p.m. · Return leaves 6:02 a.m. · 9 h 50 min of travel, both ways together
out 1 stop, back nonstop
found yesterday
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$208 4 Nov – 7 Novfound yesterdaySee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 24 days, 24 Sept to 17 Oct, the cheapest return we saw each day was $94 to $211.
24 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good return price?
Not enough comparable prices yet: we hold return fares on 1 departure date and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other 3-night return fares leaving within 3 days of 4 Nov to compare.
Every date we hold
1 fares on 1 departure dates
See every date as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 4 Nov – 7 Nov | $208 | Frontier Airlines | Denver International Airport (DEN) → San Francisco International Airport (SFO) | out 1 stop, back nonstop | found yesterday | See prices for these dates |
Airlines on the cheapest dates: Frontier Airlines.
One-way
The cheapest one-way fare on each of 4 departure dates is usually $68 to $106.
Cheapest one-way found recently
$68
5 Jan 2027 · Frontier Airlines
Denver International Airport (DEN) → San Francisco International Airport (SFO)
Leaves 8:37 a.m. · 2 h 53 min trip
nonstop
found 4 days ago
Cheapest nonstop one-way
$68
5 Jan 2027 · Frontier Airlines
Denver International Airport (DEN) → San Francisco International Airport (SFO)
Leaves 8:37 a.m. · 2 h 53 min trip
nonstop
found 4 days ago
Found recently, and the cheapest we hold
$68 5 Jan 2027found 4 days agoOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest one-way we saw each day was $60 to $134.
25 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good one-way price?
Compared with the cheapest one-way fare on each of 4 departure dates from 27 Oct to 5 Jan 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 5 Jan 2027 to compare.
Every date we hold
4 fares on 4 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 27 Oct | $116 | Frontier Airlines | Denver International Airport (DEN) → San Francisco International Airport (SFO) | 1 stop | found 5 days ago | Open this trip |
| 24 Nov | $68 | Frontier Airlines | Denver International Airport (DEN) → San Francisco International Airport (SFO) | 1 stop | found 4 days ago | Open this trip |
| 13 Dec | $102 | Frontier Airlines | Denver International Airport (DEN) → San Francisco International Airport (SFO) | 1 stop | found 5 days ago | Open this trip |
| 5 Jan 2027 | $68 | Frontier Airlines | Denver International Airport (DEN) → San Francisco International Airport (SFO) | nonstop | found 4 days ago | Open this trip |
Which month looks cheapest?
November 2026 is the cheapest month — from $68.
Airlines on the cheapest dates: Frontier Airlines.
Premium cabin fares from Denver to San Francisco
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 4 Nov – 7 Nov in another cabin: Premium economy · Business · First
Today's prices for 5 Jan 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Denver to San Francisco?
Return
Fares 14 to 29 days before departure were typically 55% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 17 Oct (24 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $282 | $188 | +124% | 12 |
| 7–13 days | $188 | $159 | +49% | 21 |
| 14–29 days | $126 | $126 | Cheapest seen | 11 |
| 30–59 days | $132 | $94 | +5% | 21 |
One-way
The cheapest fares were 14 to 29 days before departure.
From the cheapest one-way each day between 24 Sept and 18 Oct (25 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 14–29 days | $60 | $60 | Cheapest seen | 7 |
| 30–59 days | $73 | $60 | +22% | 20 |
| 60–89 days | $101 | $68 | +68% | 14 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
One-way
Denver → Santa Rosa
78 km from San Francisco
$224
$156 more than flying to San Francisco
8 Nov · DEN → STS · 1 stop
found yesterday
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 4 Nov – 7 Nov. A live search on this page shows what those dates cost now, for one adult in economy.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work