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Cheap flights San Francisco to Denver

1 passenger, economy

Cheap flights San Francisco to Denver

Compare prices, duration and stops

Frontier Airlines
F9 2930
06:58
San Francisco (SFO)
Sat, 12 sep
7h 17min
1 stop
14:15
Denver (DEN)
Sat, 12 sep
135 £
Frontier Airlines
F9 1230
13:04
San Francisco (SFO)
Sat, 12 sep
2h 42min
Direct
15:46
Denver (DEN)
Sat, 12 sep
94 £
Frontier Airlines
F9 3436
18:42
San Francisco (SFO)
Sat, 12 sep
2h 48min
Direct
21:30
Denver (DEN)
Sat, 12 sep
36 £
Frontier Airlines
F9 2486
22:15
San Francisco (SFO)
Sat, 12 sep
7h 29min
1 stop
05:44
Denver (DEN)
Sun, 13 sep +1
103 £
Alaska Airlines
AS 426
14:08
San Francisco (SFO)
Sun, 13 sep
25h 51min
1 stop
15:59
Denver (DEN)
Mon, 14 sep +1
84 £
Frontier Airlines
F9 3440
01:37
San Francisco (SFO)
Mon, 14 sep
2h 49min
Direct
04:26
Denver (DEN)
Mon, 14 sep
93 £
Frontier Airlines
F9 3308
16:00
San Francisco (SFO)
Mon, 14 sep
7h 59min
1 stop
23:59
Denver (DEN)
Mon, 14 sep
98 £
Frontier Airlines
F9 2678
01:02
San Francisco (SFO)
Tue, 15 sep
14h 33min
1 stop
15:35
Denver (DEN)
Tue, 15 sep
39 £
Frontier Airlines
F9 1230
13:04
San Francisco (SFO)
Tue, 15 sep
2h 42min
Direct
15:46
Denver (DEN)
Tue, 15 sep
47 £
Frontier Airlines
F9 3308
16:00
San Francisco (SFO)
Wed, 16 sep
7h 32min
1 stop
23:32
Denver (DEN)
Wed, 16 sep
47 £
Frontier Airlines
F9 3436 Best price
18:42
San Francisco (SFO)
Wed, 16 sep
2h 48min
Direct
21:30
Denver (DEN)
Wed, 16 sep
34 £
Frontier Airlines
F9 1230
13:04
San Francisco (SFO)
Thu, 17 sep
2h 42min
Direct
15:46
Denver (DEN)
Thu, 17 sep
42 £
Frontier Airlines
F9 4310
16:42
San Francisco (SFO)
Thu, 17 sep
2h 47min
Direct
19:29
Denver (DEN)
Thu, 17 sep
44 £
Frontier Airlines
F9 2858 🔥 Hot deal
19:07
San Francisco (SFO)
Thu, 17 sep
28h 52min
1 stop
23:59
Denver (DEN)
Fri, 18 sep +1
68 £
Frontier Airlines
F9 2678
01:02
San Francisco (SFO)
Sat, 19 sep
20h 5min
1 stop
21:07
Denver (DEN)
Sat, 19 sep
55 £
Frontier Airlines
F9 1230
13:04
San Francisco (SFO)
Sat, 19 sep
2h 42min
Direct
15:46
Denver (DEN)
Sat, 19 sep
39 £
Frontier Airlines
F9 2930
06:58
San Francisco (SFO)
Sun, 20 sep
7h 17min
1 stop
14:15
Denver (DEN)
Sun, 20 sep
98 £
Frontier Airlines
F9 2638
20:10
San Francisco (SFO)
Sun, 20 sep
9h 38min
1 stop
05:48
Denver (DEN)
Mon, 21 sep +1
102 £
Frontier Airlines
F9 3382
23:31
San Francisco (SFO)
Sun, 20 sep
16h 28min
1 stop
15:59
Denver (DEN)
Mon, 21 sep +1
85 £
Frontier Airlines
F9 3440
23:34
San Francisco (SFO)
Mon, 21 sep
2h 46min
Direct
02:20
Denver (DEN)
Tue, 22 sep +1
48 £
Frontier Airlines
F9 2930
06:58
San Francisco (SFO)
Tue, 22 sep
7h 17min
1 stop
14:15
Denver (DEN)
Tue, 22 sep
99 £
Frontier Airlines
F9 1230
13:04
San Francisco (SFO)
Tue, 22 sep
2h 42min
Direct
15:46
Denver (DEN)
Tue, 22 sep
45 £
Frontier Airlines
F9 4158
18:17
San Francisco (SFO)
Tue, 22 sep
11h 27min
1 stop
05:44
Denver (DEN)
Wed, 23 sep +1
55 £
Frontier Airlines
F9 3308
16:00
San Francisco (SFO)
Wed, 23 sep
29h 5min
1 stop
21:05
Denver (DEN)
Thu, 24 sep +1
46 £
Frontier Airlines
F9 1230
13:04
San Francisco (SFO)
Thu, 24 sep
2h 42min
Direct
15:46
Denver (DEN)
Thu, 24 sep
49 £
Frontier Airlines
F9 2858
19:07
San Francisco (SFO)
Thu, 24 sep
4h 52min
1 stop
23:59
Denver (DEN)
Thu, 24 sep
103 £
Frontier Airlines
F9 3440
23:34
San Francisco (SFO)
Fri, 25 sep
2h 46min
Direct
02:20
Denver (DEN)
Sat, 26 sep +1
64 £
Frontier Airlines
F9 3436
18:42
San Francisco (SFO)
Sat, 26 sep
2h 48min
Direct
21:30
Denver (DEN)
Sat, 26 sep
50 £
Frontier Airlines
F9 3382
23:31
San Francisco (SFO)
Sun, 27 sep
16h 28min
1 stop
15:59
Denver (DEN)
Mon, 28 sep +1
95 £
Frontier Airlines
F9 1230
13:04
San Francisco (SFO)
Wed, 30 sep
2h 42min
Direct
15:46
Denver (DEN)
Wed, 30 sep
38 £
Frontier Airlines
F9 3436
18:42
San Francisco (SFO)
Wed, 30 sep
2h 48min
Direct
21:30
Denver (DEN)
Wed, 30 sep
50 £
Frontier Airlines
F9 3382
23:31
San Francisco (SFO)
Wed, 30 sep
16h 28min
1 stop
15:59
Denver (DEN)
Thu, 1 oct +1
90 £
Frontier Airlines
F9 4402
05:24
San Francisco (SFO)
Fri, 2 oct
20h 57min
2 stops
02:21
Denver (DEN)
Sat, 3 oct +1
87 £

Low price calendar

September 2026
Price chart (September 2026)
min: 39 £ · max: 103 £
01.09.2026 — no data 02.09.2026 — no data 03.09.2026 — no data 04.09.2026 — no data 05.09.2026 — no data 06.09.2026 — no data 07.09.2026 — no data 08.09.2026 — no data 09.09.2026 — no data 10.09.2026 — no data 11.09.2026 — no data 12.09.2026 — 103 £ 13.09.2026 — 84 £ 14.09.2026 — 98 £ 15.09.2026 — 47 £ 16.09.2026 — 47 £ 17.09.2026 — 68 £ 18.09.2026 — no data 19.09.2026 — 39 £ 20.09.2026 — 98 £ 21.09.2026 — 48 £ 22.09.2026 — 55 £ 23.09.2026 — 46 £ 24.09.2026 — 103 £ 25.09.2026 — 64 £ 26.09.2026 — 50 £ 27.09.2026 — 95 £ 28.09.2026 — no data 29.09.2026 — no data 30.09.2026 — 90 £ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Mon
Tue
Wed
Thu
Fri
Sat
Sun
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103 £
13
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84 £
14
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98 £
15
Good deal
47 £
16
Good deal
47 £
17
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68 £
18
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no data
19
Good deal
39 £
20
placeholder
98 £
21
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48 £
22
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55 £
23
Good deal
46 £
24
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103 £
25
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64 £
26
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50 £
27
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95 £
28
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29
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30
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90 £

Cheap flights San Francisco to Denver

Frontier Airlines
Frontier Airlines
Mon, Tue, Wed, Thu, Fri, Sat, Sun
Price from
£55

Popular destinations from San Francisco

All →
SFO
San Francisco — Los Angeles
United States → United States
LAX
from
£13
SFO
San Francisco — San Diego
United States → United States
SAN
from
£14
SFO
San Francisco — Ontario
United States → United States
ONT
from
£16
SFO
San Francisco — Las Vegas
United States → United States
LAS
from
£16
SFO
San Francisco — Los Angeles
United States → United States
SNA
from
£33
SFO
San Francisco — Seattle
United States → United States
SEA
from
£34
SFO
San Francisco — Phoenix
United States → United States
PHX
from
£34
SFO
San Francisco — Portland
United States → United States
PDX
from
£41

Popular destinations to Denver

All →
PHX
Phoenix — Denver
United States → United States
DEN
from
£17
CHI
Chicago — Denver
United States → United States
DEN
from
£18
SLC
Salt Lake City — Denver
United States → United States
DEN
from
£19
SEA
Seattle — Denver
United States → United States
DEN
from
£19
ATL
Atlanta — Denver
United States → United States
DEN
from
£19
DFW
Dallas — Denver
United States → United States
DEN
from
£19
AUS
Austin — Denver
United States → United States
DEN
from
£19
LAX
Los Angeles — Denver
United States → United States
DEN
from
£20
MSP
Minneapolis — Denver
United States → United States
DEN
from
£22

Cheap flights San Francisco to Denver

Interesting facts about the route

Flight time

7h 17min

Distance

1 554 km

Average price

£55

Most frequent flight

F9 1230

Passenger reviews

No reviews for this route yet

Internet abroad

eSIM · United States

All plans

change

3 GB

data

30

days

£7

Buy

change

2 GB

data

15

days

£9

Buy

change

5 GB

data

30

days

£10

Buy

change

3 GB

data

30

days

£12

Buy

change

5 GB

data

30

days

£17

Buy

Frequently Asked Questions

The average ticket price San Francisco Denver is £55. The cheapest ticket costs £36, operated by Frontier Airlines, flight 3436, departing San Francisco on 12 September at 18:42, arriving Denver on 12 September at 21:30.
The average flight time is 7 hours 17 minutes. The fastest flight takes 2 hours 42 minutes, flight 1230 operated by Frontier Airlines, departing San Francisco on 12 September at 13:04, arriving Denver on 12 September at 15:46.
Flights on the San Francisco - Denver route are operated by the following airlines: Frontier Airlines.
The distance from San Francisco to Denver is 1554 km.