$124+ Cheap flights from San Francisco (SFO) to Fort Collins, CO
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/13. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — DEN
Aug 8 — Aug 151
Round-trip
1 adult, Economy
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Find cheap flights from San Francisco to Fort Collins with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from San Francisco to Fort Collins are usually found in October or February, booked 71 days in advance, depart on a Wednesday or Saturday and return on a Friday
Cheap flight deals from San Francisco to Fort Collins
Cheapest
Best
Last-minute
One-way
Cheapest flights from San Francisco to Fort CollinsExplore the most affordable flight options available from San Francisco to Fort Collins. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 9, 2026.
Explore the most affordable flight options available from San Francisco to Fort Collins. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 9, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/137:04 pm
SFO
- DEN
Nonstop2h 40m
Frontier
Sun 8/164:18 pm
DEN
- SFO
Nonstop2h 51m
Frontier
Deal found 7/9![Frontier logo]()
$231
This Kiwi.com deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/106:04 pm
SFO
- DEN
Nonstop2h 45m
Frontier
Fri 8/141:18 pm
DEN
- SFO
1 stop6h 00m
Frontier
Deal found 7/4![Frontier logo]()
$232
This Frontier deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:00 am
SFO
- DEN
Nonstop2h 41m
Frontier
Wed 8/1910:29 pm
DEN
- SFO
Nonstop2h 49m
Frontier
Deal found 7/9![Frontier logo]()
$233
This Frontier deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:15 am
SFO
- DEN
Nonstop2h 41m
Frontier
Sun 11/810:43 pm
DEN
- SFO
1 stop10h 59m
Frontier
Deal found 7/5![Frontier logo]()
$234
This Southwest deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/312:30 pm
SFO
- DEN
1 stop6h 45m
Southwest
Sat 9/57:45 pm
DEN
- SFO
Nonstop2h 40m
Southwest
Deal found 7/7![Southwest logo]()
$235
This Frontier deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/156:04 pm
SFO
- DEN
Nonstop2h 45m
Frontier
Fri 9/1810:29 pm
DEN
- SFO
Nonstop2h 46m
Frontier
Deal found 7/8![Frontier logo]()
$236
This Frontier deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:00 am
SFO
- DEN
Nonstop2h 41m
Frontier
Fri 8/710:29 pm
DEN
- SFO
Nonstop2h 49m
Frontier
Deal found 7/8![Frontier logo]()
$237
This Southwest deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/63:20 pm
SFO
- DEN
Nonstop2h 30m
Southwest
Mon 8/107:00 pm
DEN
- SFO
1 stop5h 25m
Southwest
Deal found 7/7![Southwest logo]()
$238
This Frontier deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/316:00 am
SFO
- DEN
Nonstop2h 46m
Frontier
Thu 8/62:00 pm
DEN
- SFO
Nonstop2h 46m
Frontier
Deal found 7/9![Frontier logo]()
$239
This Frontier deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:04 pm
SFO
- DEN
Nonstop2h 45m
Frontier
Tue 8/1110:00 am
DEN
- SFO
1 stop6h 20m
Frontier
Deal found 7/6![Frontier logo]()
$240
This Kiwi.com deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/26:00 am
SFO
- DEN
Nonstop2h 46m
Frontier
Tue 8/1110:29 pm
DEN
- SFO
Nonstop2h 49m
Frontier
Deal found 7/8![Frontier logo]()
$241
This Kiwi.com deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/137:04 pm
SFO
- DEN
Nonstop2h 40m
Frontier
Sun 8/2310:29 pm
DEN
- SFO
1 stop14h 23m
Frontier
Deal found 7/5![Frontier logo]()
$242
Best flights from San Francisco to Fort CollinsDiscover carefully curated flight deals from San Francisco to Fort Collins that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 9, 2026.
Discover carefully curated flight deals from San Francisco to Fort Collins that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 9, 2026.
This Southwest deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/63:20 pm
SFO
- DEN
Nonstop2h 30m
Southwest
Sat 8/1512:25 pm
DEN
- SFO
1 stop6h 05m
Southwest
Deal found 7/7![Southwest logo]()
$238
This Delta deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/157:13 am
SFO
- DEN
1 stop4h 36m
Delta
Fri 9/188:05 am
DEN
- SFO
1 stop5h 13m
Delta
Deal found 7/8![Delta logo]()
$267
This Southwest deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/62:05 pm
SFO
- DEN
1 stop5h 00m
Southwest
Thu 8/133:10 pm
DEN
- SFO
2 stops6h 20m
Southwest
Deal found 7/9![Southwest logo]()
$253
This Southwest deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:45 am
SFO
- DEN
2 stops6h 45m
Southwest
Mon 8/243:10 pm
DEN
- SFO
2 stops6h 20m
Southwest
Deal found 7/8![Southwest logo]()
$258
This Southwest deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/63:20 pm
SFO
- DEN
Nonstop2h 30m
Southwest
Mon 8/109:10 pm
DEN
- SFO
Nonstop2h 40m
Southwest
Deal found 7/7![Southwest logo]()
$273
This Delta deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1512:00 pm
SFO
- DEN
1 stop5h 10m
Delta
Sat 10/171:00 pm
DEN
- SFO
2 stops11h 56m
Delta
Deal found 7/9![Delta logo]()
$353
This Southwest deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/143:20 pm
SFO
- DEN
Nonstop2h 30m
Southwest
Fri 9/183:10 pm
DEN
- SFO
2 stops6h 20m
Southwest
Deal found 7/7![Southwest logo]()
$276
This Southwest deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/235:20 am
SFO
- DEN
Nonstop2h 35m
Southwest
Tue 12/291:35 pm
DEN
- SFO
Nonstop2h 45m
Southwest
Deal found 7/7![Southwest logo]()
$317
This Southwest deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1811:15 am
SFO
- DEN
1 stop4h 50m
Southwest
Tue 8/259:05 am
DEN
- SFO
2 stops6h 35m
Southwest
Deal found 7/4![Southwest logo]()
$338
This Southwest deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/206:00 am
SFO
- DEN
Nonstop2h 30m
Southwest
Mon 11/239:30 pm
DEN
- SFO
Nonstop2h 50m
Southwest
Deal found 7/7![Southwest logo]()
$338
This Southwest deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/256:10 am
SFO
- DEN
1 stop5h 10m
Southwest
Wed 7/298:00 am
DEN
- SFO
Nonstop2h 50m
Southwest
Deal found 7/8![Southwest logo]()
$357
Last-minute flights from San Francisco to Fort CollinsDiscover last-minute flight deals from San Francisco to Fort Collins. Data last updated July 9, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Fort Collins. Data last updated July 9, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/285:11 pm
SFO
- DEN
1 stop13h 32m
Frontier
Tue 8/412:22 pm
DEN
- SFO
1 stop4h 49m
Frontier
Deal found 7/6![Frontier logo]()
$235
This Frontier deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/316:00 am
SFO
- DEN
Nonstop2h 46m
Frontier
Sat 8/83:22 pm
DEN
- SFO
Nonstop2h 47m
Frontier
Deal found 7/9![Frontier logo]()
$239
This Kiwi.com deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/26:00 am
SFO
- DEN
Nonstop2h 46m
Frontier
Tue 8/1110:29 pm
DEN
- SFO
Nonstop2h 49m
Frontier
Deal found 7/8![Frontier logo]()
$241
This Southwest deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/63:20 pm
SFO
- DEN
Nonstop2h 30m
Southwest
Thu 8/135:20 pm
DEN
- SFO
1 stop5h 20m
Southwest
Deal found 7/7![Southwest logo]()
$238
This Frontier deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:00 am
SFO
- DEN
Nonstop2h 41m
Frontier
Fri 8/710:29 pm
DEN
- SFO
Nonstop2h 49m
Frontier
Deal found 7/8![Frontier logo]()
$237
This Frontier deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:04 pm
SFO
- DEN
Nonstop2h 45m
Frontier
Tue 8/1110:00 am
DEN
- SFO
1 stop6h 20m
Frontier
Deal found 7/6![Frontier logo]()
$240
This Kiwi.com deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/106:04 pm
SFO
- DEN
Nonstop2h 45m
Frontier
Fri 8/141:18 pm
DEN
- SFO
1 stop6h 00m
Frontier
Deal found 7/4![Frontier logo]()
$232
This Cheapflightsfares deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/137:04 pm
SFO
- DEN
Nonstop2h 40m
Frontier
Sun 8/164:18 pm
DEN
- SFO
Nonstop2h 51m
Frontier
Deal found 7/9![Frontier logo]()
$231
This Kiwi.com deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/137:04 pm
SFO
- DEN
Nonstop2h 40m
Frontier
Sun 8/2310:29 pm
DEN
- SFO
1 stop14h 23m
Frontier
Deal found 7/5![Frontier logo]()
$242
This Frontier deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/156:04 pm
SFO
- DEN
Nonstop2h 45m
Frontier
Fri 9/1810:29 pm
DEN
- SFO
Nonstop2h 46m
Frontier
Deal found 7/8![Frontier logo]()
$236
This Frontier deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:00 am
SFO
- DEN
Nonstop2h 41m
Frontier
Wed 8/1910:29 pm
DEN
- SFO
Nonstop2h 49m
Frontier
Deal found 7/9![Frontier logo]()
$233
One-way flights from San Francisco to Fort CollinsSearch for one-way flight options from San Francisco to Fort Collins. Find affordable one-way fares based on user searches. Data last updated July 9, 2026.
Search for one-way flight options from San Francisco to Fort Collins. Find affordable one-way fares based on user searches. Data last updated July 9, 2026.
This American Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/133:46 pm
SFO
- DEN
1 stop4h 56m
American Airlines
Deal found 7/9![American Airlines logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/305:11 pm
SFO
- DEN
1 stop15h 50m
Frontier
Deal found 7/6![Frontier logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/169:05 pm
SFO
- DEN
1 stop5h 45m
Frontier
Deal found 7/9![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2210:23 pm
SFO
- DEN
1 stop14h 18m
Frontier
Deal found 7/5![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/95:11 pm
SFO
- DEN
1 stop15h 50m
Frontier
Deal found 7/6![Frontier logo]()
$128
This Southwest deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/45:30 pm
SFO
- DEN
Nonstop2h 30m
Southwest
Deal found 7/8![Southwest logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/35:11 pm
SFO
- DEN
1 stop13h 32m
Frontier
Deal found 7/7![Frontier logo]()
$131
This Cheapflightsfares deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/156:04 pm
SFO
- DEN
Nonstop2h 45m
Frontier
Deal found 7/7![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/281:07 pm
SFO
- DEN
2 stops13h 41m
Frontier
Deal found 7/8![Frontier logo]()
$133
This Frontier deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:00 am
SFO
- DEN
Nonstop2h 41m
Frontier
Deal found 7/8![Frontier logo]()
$135
Find flight deals from San Francisco to Fort Collins
Keep the following information in mind while searching for San Francisco to Fort Collins flight deals. Data was last updated July 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $231 (Cheapflightsfares) |
One-way from | $124 (American Airlines) |
Popular in | June |
Cheapest in | October |
Average price | $310 |
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco to Fort Collins that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 9, 2026.
Use the filters below to find and compare flights from San Francisco to Fort Collins that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Thu 8/6
3:20 pm-6:50 pm
Nonstop2h 30m
Denver Intl
Sat 8/15
12:25 pm-5:30 pm
1 stop6h 05m
$238
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Thu 8/6
2:05 pm-8:05 pm
1 stop5h 00m
Denver Intl
Thu 8/13
3:10 pm-8:30 pm
2 stops6h 20m
$253
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Thu 8/20
6:45 am-2:30 pm
2 stops6h 45m
Denver Intl
Mon 8/24
3:10 pm-8:30 pm
2 stops6h 20m
$258
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Sat 8/15
7:13 am-12:49 pm
1 stop4h 36m
Denver Intl
Fri 9/18
8:05 am-12:18 pm
1 stop5h 13m
$267
Quickest round-trip
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Thu 8/6
3:20 pm-6:50 pm
Nonstop2h 30m
Denver Intl
Mon 8/10
9:10 pm-10:50 pm
Nonstop2h 40m
$273
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Mon 9/14
3:20 pm-6:50 pm
Nonstop2h 30m
Denver Intl
Fri 9/18
3:10 pm-8:30 pm
2 stops6h 20m
$276
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Wed 12/23
5:20 am-8:55 am
Nonstop2h 35m
Denver Intl
Tue 12/29
1:35 pm-3:20 pm
Nonstop2h 45m
$317
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Tue 8/18
11:15 am-5:05 pm
1 stop4h 50m
Denver Intl
Tue 8/25
9:05 am-2:40 pm
2 stops6h 35m
$338
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Fri 11/20
6:00 am-9:30 am
Nonstop2h 30m
Denver Intl
Mon 11/23
9:30 pm-11:20 pm
Nonstop2h 50m
$338
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Thu 10/15
12:00 pm-6:10 pm
1 stop5h 10m
Denver Intl
Sat 10/17
1:00 pm-11:56 pm
2 stops11h 56m
$353
Showing 1-10 of 22 resultsSorted by cheapest first
Best time to book a flight from San Francisco to Fort Collins
Have a flexible travel schedule? Discover the best time to fly to Fort Collins from San Francisco with our price prediction graph.
SFO-DEN
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from San Francisco to Fort Collins
SFO-FC9
SFO-DEN
What is the cheapest time of day to fly from SFO to FC9?
Find hourly flight availability from San Francisco to Fort Collins. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 9, 2026.
Unlike at noon, when flights are generally more expensive, you can save up to 26% on flights from San Francisco to Fort Collins by exploring options for tickets in the evening.
Weekly flight availability from San Francisco to Fort Collins
Explore weekly flight availability from San Francisco to Fort Collins. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 9, 2026.
The most flights from SFO to FC9 are scheduled on a Monday (62 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (33 on average).
How much does it cost to fly round-trip from San Francisco to Fort Collins?
What is the cheapest day to fly from San Francisco to Fort Collins?
Use this chart to determine the cheapest time to fly round-trip from San Francisco to Fort Collins. Price data was last updated on July 4, 2026.
Travelers seeking maximum savings on their San Francisco to Fort Collins flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Fort Collins
Get insights into the airlines that provide service to Fort Collins. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Fort Collins. Reviews last updated July 9, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from San Francisco to Fort Collins have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from San Francisco to Fort Collins. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for San Francisco to Fort Collins
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Complete your trip
Complete your trip to Fort Collins by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from San Francisco to Fort Collins by cabin class
Find flights from San Francisco to Fort Collins, based on your preferred cabin class, be it economy, premium economy, business, or first class.
San Francisco and Fort Collins flights
Browse other San Francisco and Fort Collins flight options. Last updated on July 9, 2026.
Other flights from San Francisco
Browse through other flights departing from San Francisco. Flights are based on user searches made on Cheapflights and were last updated on July 9, 2026.
Popular flight searches
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San Francisco to Fort Collins flights
Consider these flights traveling from San Francisco to Fort Collins.
Top 5 airlines flying from San Francisco to Fort Collins
Discover the top 5 airlines that operate flights from San Francisco to Fort Collins. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$83 | Average$233 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$157 | Average$338 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$185 | Average$386 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$223 | Average$326 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$226 | Average$342 | FlexibilityNo cancel fee | On-time62% |