$126+ 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 8/8. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — DEN
Jul 13 — Jul 201
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 September, 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 June 13, 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 June 13, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 7/309:39 pm
SFO
- DEN
Nonstop2h 50m
Frontier
Tue 8/410:00 am
DEN
- SFO
1 stop6h 25m
Frontier
Deal found 6/10![Frontier logo]()
$217
This Frontier deal was found by Cheapflights users on 6/10. 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 8/306:00 am
SFO
- DEN
Nonstop2h 44m
Frontier
Thu 9/103:09 pm
DEN
- SFO
Nonstop2h 48m
Frontier
Deal found 6/10![Frontier logo]()
$218
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 7/296:00 am
SFO
- DEN
Nonstop2h 46m
Frontier
Tue 8/410:29 pm
DEN
- SFO
Nonstop2h 54m
Frontier
Deal found 6/10![Frontier logo]()
$219
This Super.com deal was found by Cheapflights users on 6/11. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/239:39 pm
SFO
- DEN
Nonstop2h 50m
Frontier
Wed 7/299:33 am
DEN
- SFO
Nonstop2h 54m
Frontier
Deal found 6/11![Frontier logo]()
$220
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 7/296:00 am
SFO
- DEN
Nonstop2h 46m
Frontier
Sat 8/110:29 pm
DEN
- SFO
Nonstop2h 54m
Frontier
Deal found 6/10![Frontier logo]()
$221
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 8/109:30 pm
SFO
- DEN
1 stop5h 20m
Frontier
Fri 8/1410:29 pm
DEN
- SFO
Nonstop2h 49m
Frontier
Deal found 6/11![Frontier logo]()
$222
This Frontier deal was found by Cheapflights users on 6/10. 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 10/232:07 pm
SFO
- DEN
Nonstop2h 40m
Frontier
Tue 10/278:30 am
DEN
- SFO
1 stop7h 20m
Frontier
Deal found 6/10![Frontier logo]()
$223
This Super.com deal was found by Cheapflights users on 6/11. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/812:22 pm
SFO
- DEN
Nonstop2h 48m
Frontier
Sat 7/1110:29 pm
DEN
- SFO
Nonstop2h 54m
Frontier
Deal found 6/11![Frontier logo]()
$225
This Cheapflightsfares deal was found by Cheapflights users on 6/9. 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.
Sat 7/116:00 am
SFO
- DEN
Nonstop2h 46m
Frontier
Sat 7/116:58 pm
DEN
- SFO
Nonstop2h 56m
Frontier
Deal found 6/9![Frontier logo]()
$226
This Super.com deal was found by Cheapflights users on 6/10. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/187:17 pm
SFO
- DEN
Nonstop2h 42m
Frontier
Mon 9/219:47 am
DEN
- SFO
Nonstop2h 49m
Frontier
Deal found 6/10![Frontier logo]()
$227
This Frontier deal was found by Cheapflights users on 6/10. 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 7/189:39 pm
SFO
- DEN
Nonstop2h 50m
Frontier
Thu 7/3010:29 pm
DEN
- SFO
Nonstop2h 54m
Frontier
Deal found 6/10![Frontier logo]()
$228
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 June 13, 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 June 13, 2026.
This Southwest deal was found by Cheapflights users on 6/8. 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 9/151:35 pm
SFO
- DEN
2 stops6h 45m
Southwest
Thu 9/173:10 pm
DEN
- SFO
2 stops6h 20m
Southwest
Deal found 6/8![Southwest logo]()
$270
This Delta deal was found by Cheapflights users on 6/11. 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.
Tue 9/14:55 pm
SFO
- DEN
1 stop6h 03m
Delta
Fri 9/1112:59 pm
DEN
- SFO
1 stop5h 51m
Delta
Deal found 6/11![Delta logo]()
$283
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/52:20 pm
SFO
- DEN
Nonstop2h 49m
United Airlines
Mon 9/75:00 am
DEN
- SFO
Nonstop2h 41m
United Airlines
Deal found 6/10![United Airlines logo]()
$333
This Delta deal was found by Cheapflights users on 6/13. 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 9/145:50 am
SFO
- DEN
1 stop5h 15m
Delta
Mon 9/147:25 pm
DEN
- SFO
1 stop13h 59m
Delta
Deal found 6/13![Delta logo]()
$321
This Southwest deal was found by Cheapflights users on 6/13. 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 8/511:15 am
SFO
- DEN
1 stop4h 50m
Southwest
Fri 8/79:10 pm
DEN
- SFO
Nonstop2h 40m
Southwest
Deal found 6/13![Southwest logo]()
$334
This Southwest deal was found by Cheapflights users on 6/12. 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 8/292:05 pm
SFO
- DEN
1 stop5h 50m
Southwest
Sat 9/59:20 am
DEN
- SFO
2 stops9h 25m
Southwest
Deal found 6/12![Southwest logo]()
$338
This Delta deal was found by Cheapflights users on 6/10. 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.
Tue 8/254:55 pm
SFO
- DEN
1 stop6h 03m
Delta
Thu 8/2712:54 pm
DEN
- SFO
2 stops11h 56m
Delta
Deal found 6/10![Delta logo]()
$368
This Southwest deal was found by Cheapflights users on 6/11. 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 7/172:15 pm
SFO
- DEN
1 stop4h 25m
Southwest
Tue 7/218:15 am
DEN
- SFO
2 stops7h 00m
Southwest
Deal found 6/11![Southwest logo]()
$359
This Southwest deal was found by Cheapflights users on 6/12. 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 8/216:45 am
SFO
- DEN
1 stop5h 45m
Southwest
Mon 8/243:10 pm
DEN
- SFO
2 stops6h 20m
Southwest
Deal found 6/12![Southwest logo]()
$361
This Southwest deal was found by Cheapflights users on 6/8. 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.
Wed 9/231:35 pm
SFO
- DEN
2 stops6h 45m
Southwest
Sun 9/275:25 pm
DEN
- SFO
2 stops6h 25m
Southwest
Deal found 6/8![Southwest logo]()
$363
This Southwest deal was found by Cheapflights users on 6/13. 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 8/2011:30 am
SFO
- DEN
1 stop6h 15m
Southwest
Sun 8/235:25 pm
DEN
- SFO
2 stops6h 25m
Southwest
Deal found 6/13![Southwest logo]()
$400
This Southwest deal was found by Cheapflights users on 6/8. 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 7/113:15 pm
SFO
- DEN
2 stops7h 15m
Southwest
Sun 7/126:45 pm
DEN
- SFO
1 stop5h 30m
Southwest
Deal found 6/8![Southwest logo]()
$402
Last-minute flights from San Francisco to Fort CollinsDiscover last-minute flight deals from San Francisco to Fort Collins. Data last updated June 13, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Fort Collins. Data last updated June 13, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 6/8. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/66:00 am
SFO
- DEN
Nonstop2h 46m
Frontier
Thu 7/910:29 pm
DEN
- SFO
Nonstop2h 54m
Frontier
Deal found 6/8![Frontier logo]()
$222
This Booking.com deal was found by Cheapflights users on 6/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/66:00 am
SFO
- DEN
Nonstop2h 46m
Frontier
Mon 7/1310:29 pm
DEN
- SFO
Nonstop2h 54m
Frontier
Deal found 6/8![Frontier logo]()
$227
This Super.com deal was found by Cheapflights users on 6/10. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/86:00 am
SFO
- DEN
Nonstop2h 46m
Frontier
Wed 7/159:33 am
DEN
- SFO
Nonstop2h 54m
Frontier
Deal found 6/10![Frontier logo]()
$225
This Kiwi.com deal was found by Cheapflights users on 6/12. 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.
Sat 7/116:00 am
SFO
- DEN
Nonstop2h 46m
Frontier
Tue 7/2110:39 pm
DEN
- SFO
1 stop23h 06m
Frontier
Deal found 6/12![Frontier logo]()
$223
This Cheapflightsfares deal was found by Cheapflights users on 6/9. 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.
Sat 7/116:00 am
SFO
- DEN
Nonstop2h 46m
Frontier
Sat 7/116:58 pm
DEN
- SFO
Nonstop2h 56m
Frontier
Deal found 6/9![Frontier logo]()
$226
This Frontier deal was found by Cheapflights users on 6/10. 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 7/189:39 pm
SFO
- DEN
Nonstop2h 50m
Frontier
Thu 7/3010:29 pm
DEN
- SFO
Nonstop2h 54m
Frontier
Deal found 6/10![Frontier logo]()
$228
This Frontier deal was found by Cheapflights users on 6/10. 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 7/239:39 pm
SFO
- DEN
Nonstop2h 50m
Frontier
Mon 7/2710:29 pm
DEN
- SFO
Nonstop2h 54m
Frontier
Deal found 6/10![Frontier logo]()
$218
This Super.com deal was found by Cheapflights users on 6/11. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/239:39 pm
SFO
- DEN
Nonstop2h 50m
Frontier
Wed 7/299:33 am
DEN
- SFO
Nonstop2h 54m
Frontier
Deal found 6/11![Frontier logo]()
$220
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 7/296:00 am
SFO
- DEN
Nonstop2h 46m
Frontier
Tue 8/410:29 pm
DEN
- SFO
Nonstop2h 54m
Frontier
Deal found 6/10![Frontier logo]()
$219
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 7/296:00 am
SFO
- DEN
Nonstop2h 46m
Frontier
Sat 8/110:29 pm
DEN
- SFO
Nonstop2h 54m
Frontier
Deal found 6/10![Frontier logo]()
$221
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 7/309:39 pm
SFO
- DEN
Nonstop2h 50m
Frontier
Tue 8/410:00 am
DEN
- SFO
1 stop6h 25m
Frontier
Deal found 6/10![Frontier logo]()
$217
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 June 13, 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 June 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Sat 8/810:23 pm
SFO
- DEN
1 stop10h 40m
Frontier
Deal found 6/9![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 6/8. 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.
Tue 7/710:23 pm
SFO
- DEN
1 stop10h 40m
Frontier
Deal found 6/8![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Wed 7/228:23 pm
SFO
- DEN
1 stop23h 49m
Frontier
Deal found 6/9![Frontier logo]()
$128
This Kissandfly.com deal was found by Cheapflights users on 6/9. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/38:21 pm
SFO
- DEN
1 stop12h 41m
Frontier
Deal found 6/9![Frontier logo]()
$129
This Delta deal was found by Cheapflights users on 6/8. 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.
Thu 8/135:12 pm
SFO
- DEN
1 stop4h 43m
Delta
Deal found 6/8![Delta logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/810:23 pm
SFO
- DEN
1 stop10h 40m
Frontier
Deal found 6/10![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Thu 9/35:11 pm
SFO
- DEN
1 stop6h 18m
Frontier
Deal found 6/9![Frontier logo]()
$135
This Trip.com deal was found by Cheapflights users on 6/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/305:16 pm
SFO
- DEN
1 stop6h 22m
Frontier
Deal found 6/9![Frontier logo]()
$137
This Super.com deal was found by Cheapflights users on 6/9. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/235:16 pm
SFO
- DEN
1 stop6h 22m
Frontier
Deal found 6/9![Frontier logo]()
$139
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 June 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $217 (Cheapflightsfares) |
One-way from | $126 (Kiwi.com) |
Popular in | June |
Cheapest in | October |
Average price | $347 |
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 June 13, 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
Tue 9/15
1:35 pm-9:20 pm
2 stops6h 45m
Denver Intl
Thu 9/17
3:10 pm-8:30 pm
2 stops6h 20m
$270
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Tue 9/1
4:55 pm-11:58 pm
1 stop6h 03m
Denver Intl
Fri 9/11
12:59 pm-5:50 pm
1 stop5h 51m
$283
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Mon 9/14
5:50 am-12:05 pm
1 stop5h 15m
Denver Intl
Mon 9/14
7:25 pm-8:24 am
1 stop13h 59m
$321
Quickest round-trip
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Sat 9/5
2:20 pm-6:09 pm
Nonstop2h 49m
Denver Intl
Mon 9/7
5:00 am-6:41 am
Nonstop2h 41m
$333
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Wed 8/5
11:15 am-5:05 pm
1 stop4h 50m
Denver Intl
Fri 8/7
9:10 pm-10:50 pm
Nonstop2h 40m
$334
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Sat 8/29
2:05 pm-8:55 pm
1 stop5h 50m
Denver Intl
Sat 9/5
9:20 am-5:45 pm
2 stops9h 25m
$338
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Fri 7/17
2:15 pm-7:40 pm
1 stop4h 25m
Denver Intl
Tue 7/21
8:15 am-2:15 pm
2 stops7h 00m
$359
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Fri 8/21
6:45 am-1:30 pm
1 stop5h 45m
Denver Intl
Mon 8/24
3:10 pm-8:30 pm
2 stops6h 20m
$361
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Wed 9/23
1:35 pm-9:20 pm
2 stops6h 45m
Denver Intl
Sun 9/27
5:25 pm-10:50 pm
2 stops6h 25m
$363
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Tue 8/25
4:55 pm-11:58 pm
1 stop6h 03m
Denver Intl
Thu 8/27
12:54 pm-11:50 pm
2 stops11h 56m
$368
Showing 1-10 of 24 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 June 13, 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 June 13, 2026.
The most flights from SFO to FC9 are scheduled on a Friday (58 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (37 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 June 13, 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 June 13, 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.
Overall
7.9
Crew
8.6
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Overall
7.9
Crew
8.6
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Overall
7.9
Crew
8.6
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Overall
7.9
Crew
8.6
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Overall
7.9
Crew
8.6
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Overall
7.9
Crew
8.6
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
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 June 13, 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 June 13, 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 June 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$83 | Average$226 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$157 | Average$319 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$183 | Average$374 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$223 | Average$326 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$226 | Average$342 | FlexibilityNo cancel fee | On-time62% |