$118+ 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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — DEN
Aug 26 — Sep 21
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 February or October, 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 27, 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 27, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 7/27. 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.
Wed 8/1911:20 am
SFO
- DEN
1 stop22h 59m
Frontier
Sat 8/2210:29 pm
DEN
- SFO
Nonstop2h 49m
Frontier
Deal found 7/27![Frontier logo]()
$216
This Frontier deal was found by Cheapflights users on 7/27. 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 8/265:35 pm
SFO
- DEN
Nonstop2h 41m
Frontier
Sun 9/134:00 pm
DEN
- SFO
Nonstop2h 52m
Frontier
Deal found 7/27![Frontier logo]()
$217
This Frontier deal was found by Cheapflights users on 7/22. 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.
Thu 8/276:00 am
SFO
- DEN
Nonstop2h 41m
Frontier
Thu 9/109:15 am
DEN
- SFO
1 stop7h 41m
Frontier
Deal found 7/22![Frontier logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 8/218:56 pm
SFO
- DEN
1 stop5h 52m
Frontier
Mon 8/244:54 pm
DEN
- SFO
Nonstop2h 51m
Frontier
Deal found 7/26![Frontier logo]()
$219
This Cheapflightsfares deal was found by Cheapflights users on 7/27. 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.
Fri 9/118:34 am
SFO
- DEN
Nonstop2h 48m
Frontier
Sun 9/138:59 am
DEN
- SFO
Nonstop2h 48m
Frontier
Deal found 7/27![Frontier logo]()
$220
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 8/106:00 am
SFO
- DEN
Nonstop2h 41m
Frontier
Wed 8/2610:29 pm
DEN
- SFO
1 stop12h 46m
Frontier
Deal found 7/25![Frontier logo]()
$221
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 8/1110:07 pm
SFO
- DEN
1 stop4h 43m
Frontier
Wed 8/2610:29 pm
DEN
- SFO
1 stop12h 46m
Frontier
Deal found 7/27![Frontier logo]()
$222
This Frontier deal was found by Cheapflights users on 7/26. 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.
Thu 10/295:58 pm
SFO
- DEN
1 stop5h 17m
Frontier
Fri 10/3010:29 pm
DEN
- SFO
Nonstop2h 46m
Frontier
Deal found 7/26![Frontier logo]()
$223
This Frontier deal was found by Cheapflights users on 7/23. 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 9/46:00 am
SFO
- DEN
Nonstop2h 41m
Frontier
Sat 9/510:29 pm
DEN
- SFO
Nonstop2h 49m
Frontier
Deal found 7/23![Frontier logo]()
$224
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 8/127:08 pm
SFO
- DEN
2 stops12h 57m
Frontier
Tue 8/1810:39 pm
DEN
- SFO
1 stop23h 01m
Frontier
Deal found 7/25![Frontier logo]()
$225
This Kissandfly.com deal was found by Cheapflights users on 7/27. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:30 pm
SFO
- DEN
Nonstop2h 40m
Frontier
Mon 8/2410:49 pm
DEN
- SFO
1 stop22h 07m
Frontier
Deal found 7/27![Frontier logo]()
$226
This Kiwi.com deal was found by Cheapflights users on 7/27. 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
Tue 8/257:25 am
DEN
- SFO
1 stop14h 15m
Frontier
Deal found 7/27![Frontier logo]()
$227
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 27, 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 27, 2026.
This Alaska Airlines deal was found by Cheapflights users on 7/24. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/124:43 pm
SFO
- DEN
1 stop17h 49m
Alaska Airlines
Wed 10/1412:31 pm
DEN
- SFO
1 stop9h 02m
Alaska Airlines
Deal found 7/24![Alaska Airlines logo]()
$283
This Southwest deal was found by Cheapflights users on 7/22. 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 10/13:15 pm
SFO
- DEN
1 stop6h 55m
Southwest
Thu 10/85:55 am
DEN
- SFO
2 stops6h 25m
Southwest
Deal found 7/22![Southwest logo]()
$313
This Delta deal was found by Cheapflights users on 7/26. 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 12/1712:05 pm
SFO
- DEN
1 stop10h 53m
Delta
Fri 1/15:35 am
DEN
- SFO
1 stop4h 40m
Delta
Deal found 7/26![Delta logo]()
$361
This Southwest deal was found by Cheapflights users on 7/25. 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 8/1910:40 am
SFO
- DEN
1 stop7h 05m
Southwest
Fri 8/213:10 pm
DEN
- SFO
2 stops6h 20m
Southwest
Deal found 7/25![Southwest logo]()
$342
This Delta deal was found by Cheapflights users on 7/23. 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.
Mon 10/124:59 pm
SFO
- DEN
1 stop6h 00m
Delta
Wed 10/141:00 pm
DEN
- SFO
2 stops11h 56m
Delta
Deal found 7/23![Delta logo]()
$371
This Southwest deal was found by Cheapflights users on 7/23. 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 8/127:40 am
SFO
- DEN
1 stop4h 20m
Southwest
Thu 8/133:10 pm
DEN
- SFO
2 stops6h 20m
Southwest
Deal found 7/23![Southwest logo]()
$343
This Delta deal was found by Cheapflights users on 7/25. 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.
Mon 8/105:08 pm
SFO
- DEN
1 stop4h 47m
Delta
Tue 8/2512:54 pm
DEN
- SFO
2 stops12h 05m
Delta
Deal found 7/25![Delta logo]()
$390
This Alaska Airlines deal was found by Cheapflights users on 7/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/124:31 pm
SFO
- DEN
1 stop5h 59m
Alaska Airlines
Sun 8/166:00 am
DEN
- SFO
1 stop18h 08m
Alaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$445
This Southwest deal was found by Cheapflights users on 7/23. 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 9/1110:25 am
SFO
- DEN
1 stop7h 20m
Southwest
Sun 9/139:15 am
DEN
- SFO
2 stops6h 45m
Southwest
Deal found 7/23![Southwest logo]()
$382
This Delta deal was found by Cheapflights users on 7/26. 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 8/139:30 am
SFO
- DEN
1 stop7h 48m
Delta
Sat 8/157:41 am
DEN
- SFO
1 stop6h 45m
Delta
Deal found 7/26![Delta logo]()
$407
This Southwest deal was found by Cheapflights users on 7/26. 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 8/282:00 pm
SFO
- DEN
1 stop5h 15m
Southwest
Sun 8/309:15 am
DEN
- SFO
2 stops6h 45m
Southwest
Deal found 7/26![Southwest logo]()
$433
Last-minute flights from San Francisco to Fort CollinsDiscover last-minute flight deals from San Francisco to Fort Collins. Data last updated July 27, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Fort Collins. Data last updated July 27, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 8/106:00 am
SFO
- DEN
Nonstop2h 41m
Frontier
Wed 8/2610:29 pm
DEN
- SFO
1 stop12h 46m
Frontier
Deal found 7/25![Frontier logo]()
$221
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 8/109:05 pm
SFO
- DEN
1 stop5h 45m
Frontier
Thu 8/277:00 am
DEN
- SFO
1 stop14h 40m
Frontier
Deal found 7/25![Frontier logo]()
$224
This Kiwi.com deal was found by Cheapflights users on 7/27. 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
Tue 8/257:25 am
DEN
- SFO
1 stop14h 15m
Frontier
Deal found 7/27![Frontier logo]()
$227
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 8/1112:38 pm
SFO
- DEN
Nonstop2h 43m
Frontier
Thu 8/277:00 am
DEN
- SFO
1 stop14h 40m
Frontier
Deal found 7/25![Frontier logo]()
$220
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 8/1110:07 pm
SFO
- DEN
1 stop4h 43m
Frontier
Wed 8/2610:29 pm
DEN
- SFO
1 stop12h 46m
Frontier
Deal found 7/27![Frontier logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 8/127:08 pm
SFO
- DEN
2 stops12h 57m
Frontier
Tue 8/1810:39 pm
DEN
- SFO
1 stop23h 01m
Frontier
Deal found 7/25![Frontier logo]()
$225
This Cheapflightsfares deal was found by Cheapflights users on 7/27. 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.
Wed 8/1911:20 am
SFO
- DEN
1 stop22h 59m
Frontier
Sat 8/2210:29 pm
DEN
- SFO
Nonstop2h 49m
Frontier
Deal found 7/27![Frontier logo]()
$216
This WAYA deal was found by Cheapflights users on 7/22. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/203:38 pm
SFO
- DEN
1 stop5h 03m
Frontier
Sun 8/2310:29 pm
DEN
- SFO
Nonstop2h 49m
Frontier
Deal found 7/22![Frontier logo]()
$223
This Kissandfly.com deal was found by Cheapflights users on 7/27. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:30 pm
SFO
- DEN
Nonstop2h 40m
Frontier
Mon 8/2410:49 pm
DEN
- SFO
1 stop22h 07m
Frontier
Deal found 7/27![Frontier logo]()
$226
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 8/218:56 pm
SFO
- DEN
1 stop5h 52m
Frontier
Mon 8/244:54 pm
DEN
- SFO
Nonstop2h 51m
Frontier
Deal found 7/26![Frontier logo]()
$219
This Frontier deal was found by Cheapflights users on 7/27. 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 8/265:35 pm
SFO
- DEN
Nonstop2h 41m
Frontier
Sun 9/134:00 pm
DEN
- SFO
Nonstop2h 52m
Frontier
Deal found 7/27![Frontier logo]()
$217
This Frontier deal was found by Cheapflights users on 7/22. 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.
Thu 8/276:00 am
SFO
- DEN
Nonstop2h 41m
Frontier
Thu 9/109:15 am
DEN
- SFO
1 stop7h 41m
Frontier
Deal found 7/22![Frontier logo]()
$218
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 27, 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 27, 2026.
This Frontier deal was found by Cheapflights users on 7/22. 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 9/56:00 am
SFO
- DEN
Nonstop2h 41m
Frontier
Deal found 7/22![Frontier logo]()
$118
This Alaska Airlines deal was found by Cheapflights users on 7/24. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1611:38 am
SFO
- DEN
1 stop6h 48m
Alaska Airlines
Deal found 7/24![Alaska Airlines logo]()
$119
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 8/188:56 pm
SFO
- DEN
2 stops19h 14m
Frontier
Deal found 7/25![Frontier logo]()
$120
This Cheapflightsfares deal was found by Cheapflights users on 7/23. 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 11/2111:25 am
SFO
- DEN
Nonstop2h 42m
Frontier
Deal found 7/23![Frontier logo]()
$121
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/303:38 pm
SFO
- DEN
1 stop11h 10m
Frontier
Deal found 7/24![Frontier logo]()
$122
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 10/236:22 am
SFO
- DEN
1 stop6h 22m
Frontier
Deal found 7/22![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/135:11 pm
SFO
- DEN
1 stop13h 32m
Frontier
Deal found 7/22![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 8/208:23 pm
SFO
- DEN
1 stop12h 40m
Frontier
Deal found 7/27![Frontier logo]()
$126
This Delta deal was found by Cheapflights users on 7/23. 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 8/137:13 am
SFO
- DEN
1 stop15h 39m
Delta
Deal found 7/23![Delta logo]()
$127
This American Airlines deal was found by Cheapflights users on 7/22. 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 8/137:00 am
SFO
- DEN
1 stop9h 56m
American Airlines
Deal found 7/22![American Airlines logo]()
$128
This Southwest deal was found by Cheapflights users on 7/22. 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 8/203:20 pm
SFO
- DEN
Nonstop2h 30m
Southwest
Deal found 7/22![Southwest logo]()
$129
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 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $216 (Cheapflightsfares) |
One-way from | $118 (Frontier) |
Popular in | June |
Cheapest in | February |
Average price | $352 |
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 27, 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
Mon 10/12
4:43 pm-11:32 am
1 stop17h 49m
Denver Intl
Wed 10/14
12:31 pm-8:33 pm
1 stop9h 02m
$283
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Thu 10/1
3:15 pm-11:10 pm
1 stop6h 55m
Denver Intl
Thu 10/8
5:55 am-11:20 am
2 stops6h 25m
$313
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Wed 8/19
10:40 am-6:45 pm
1 stop7h 05m
Denver Intl
Fri 8/21
3:10 pm-8:30 pm
2 stops6h 20m
$342
Quickest round-trip
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Wed 8/12
7:40 am-1:00 pm
1 stop4h 20m
Denver Intl
Thu 8/13
3:10 pm-8:30 pm
2 stops6h 20m
$343
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Thu 12/17
12:05 pm-11:58 pm
1 stop10h 53m
Denver Intl
Fri 1/1
5:35 am-9:15 am
1 stop4h 40m
$361
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Mon 10/12
4:59 pm-11:59 pm
1 stop6h 00m
Denver Intl
Wed 10/14
1:00 pm-11:56 pm
2 stops11h 56m
$371
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Fri 9/11
10:25 am-6:45 pm
1 stop7h 20m
Denver Intl
Sun 9/13
9:15 am-3:00 pm
2 stops6h 45m
$382
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Mon 8/10
5:08 pm-10:55 pm
1 stop4h 47m
Denver Intl
Tue 8/25
12:54 pm-11:59 pm
2 stops12h 05m
$390
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Thu 8/13
9:30 am-6:18 pm
1 stop7h 48m
Denver Intl
Sat 8/15
7:41 am-1:26 pm
1 stop6h 45m
$407
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Fri 8/28
2:00 pm-8:15 pm
1 stop5h 15m
Denver Intl
Sun 8/30
9:15 am-3:00 pm
2 stops6h 45m
$433
Showing 1-10 of 23 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 27, 2026.
Unlike at noon, when flights are generally more expensive, you can save up to 27% 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 27, 2026.
The most flights from SFO to FC9 are scheduled on a Friday (63 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (42 on average).
How much does it cost to fly round-trip from San Francisco to Fort Collins?
Airfare is typical for this route at the moment.
San Francisco to Fort Collins flights typically cost between $191 and $381 in August.The cheapest round-trip price found within the last 5 days was $216 on Frontier (Aug 19-Aug 22).
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 18, 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 27, 2026.
See what other customers who have flown with Southwest,United Airlines, andJetBlue 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.
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
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 27, 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 27, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$83 | Average$237 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$159 | Average$349 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$176 | Average$654 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$187 | Average$388 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$226 | Average$342 | FlexibilityNo cancel fee | On-time62% |