$94+ 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 6/13. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — DEN
May 28 — Jun 41
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 36 days in advance, depart on a Wednesday or Saturday and return on a Friday
Cheap flight deals from San Francisco to Fort Collins
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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 April 28, 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 April 28, 2026.
This Frontier deal was found by Cheapflights users on 4/22. 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.
Sun 5/245:25 pm
SFO
- DEN
1 stop6h 06m
Frontier
Thu 5/282:00 pm
DEN
- SFO
1 stop8h 04m
Frontier
Deal found 4/22![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Tue 5/198:28 pm
SFO
- DEN
1 stop5h 57m
Frontier
Thu 5/217:00 am
DEN
- SFO
1 stop15h 04m
Frontier
Deal found 4/26![Frontier logo]()
$162
This Cheapflightsfares deal was found by Cheapflights users on 4/27. 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 5/295:25 pm
SFO
- DEN
1 stop6h 06m
Frontier
Tue 6/210:29 pm
DEN
- SFO
Nonstop2h 54m
Frontier
Deal found 4/27![Frontier logo]()
$163
This Frontier deal was found by Cheapflights users on 4/23. 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.
Tue 6/26:00 am
SFO
- DEN
Nonstop2h 52m
Frontier
Tue 6/910:29 pm
DEN
- SFO
Nonstop2h 58m
Frontier
Deal found 4/23![Frontier logo]()
$164
This Frontier deal was found by Cheapflights users on 4/25. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/189:56 pm
SFO
- DEN
1 stop11h 05m
Frontier
Sat 5/232:00 pm
DEN
- SFO
1 stop8h 04m
Frontier
Deal found 4/25![Frontier logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Mon 6/1510:58 pm
SFO
- DEN
1 stop28h 00m
Frontier
Wed 6/2410:29 pm
DEN
- SFO
Nonstop2h 58m
Frontier
Deal found 4/26![Frontier logo]()
$166
This Cheapflightsfares deal was found by Cheapflights users on 4/27. 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.
Tue 6/96:00 am
SFO
- DEN
Nonstop2h 49m
Frontier
Wed 6/109:15 am
DEN
- SFO
1 stop8h 06m
Frontier
Deal found 4/27![Frontier logo]()
$168
This Cheapflightsfares deal was found by Cheapflights users on 4/23. 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.
Wed 5/1312:52 pm
SFO
- DEN
Nonstop2h 51m
Frontier
Sun 5/176:00 am
DEN
- SFO
1 stop12h 57m
Frontier
Deal found 4/23![Frontier logo]()
$169
This Super.com deal was found by Cheapflights users on 4/23. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/206:00 am
SFO
- DEN
Nonstop2h 52m
Frontier
Mon 5/256:05 am
DEN
- SFO
Nonstop2h 56m
Frontier
Deal found 4/23![Frontier logo]()
$170
This Frontier deal was found by Cheapflights users on 4/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:00 am
SFO
- DEN
Nonstop2h 44m
Frontier
Wed 9/29:47 am
DEN
- SFO
Nonstop2h 51m
Frontier
Deal found 4/24![Frontier logo]()
$171
This Cheapflightsfares deal was found by Cheapflights users on 4/23. 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.
Tue 5/2612:52 pm
SFO
- DEN
Nonstop2h 51m
Frontier
Fri 5/296:05 am
DEN
- SFO
Nonstop2h 56m
Frontier
Deal found 4/23![Frontier logo]()
$172
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 April 28, 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 April 28, 2026.
This Delta deal was found by Cheapflights users on 4/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/274:55 pm
SFO
- DEN
1 stop5h 49m
Delta
Mon 6/16:19 pm
DEN
- SFO
1 stop4h 11m
Delta
Deal found 4/22![Delta logo]()
$243
This Southwest deal was found by Cheapflights users on 4/26. 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.
Wed 7/155:30 am
SFO
- DEN
Nonstop2h 30m
Southwest
Mon 7/206:15 am
DEN
- SFO
2 stops6h 05m
Southwest
Deal found 4/26![Southwest logo]()
$332
This Alaska Airlines deal was found by Cheapflights users on 4/24. 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.
Sat 5/303:00 pm
SFO
- DEN
2 stops7h 59m
Alaska Airlines
Wed 6/36:40 am
DEN
- SFO
1 stop5h 09m
Alaska Airlines
Deal found 4/24![Alaska Airlines logo]()
$343
This Delta deal was found by Cheapflights users on 4/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/245:55 am
SFO
- DEN
2 stops12h 20m
Delta
Fri 5/291:08 pm
DEN
- SFO
1 stop11h 57m
Delta
Deal found 4/22![Delta logo]()
$288
This Southwest deal was found by Cheapflights users on 4/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/28:20 am
SFO
- DEN
2 stops7h 45m
Southwest
Thu 6/46:15 am
DEN
- SFO
2 stops6h 05m
Southwest
Deal found 4/27![Southwest logo]()
$347
This Alaska Airlines deal was found by Cheapflights users on 4/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1011:52 am
SFO
- DEN
1 stop5h 37m
Alaska Airlines
Wed 5/1312:02 pm
DEN
- SFO
1 stop5h 46m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$362
This Delta deal was found by Cheapflights users on 4/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/195:55 am
SFO
- DEN
2 stops8h 03m
Delta
Tue 5/266:19 pm
DEN
- SFO
1 stop7h 08m
Delta
Deal found 4/22![Delta logo]()
$336
This Southwest deal was found by Cheapflights users on 4/26. 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.
Sat 5/235:40 am
SFO
- DEN
Nonstop2h 35m
Southwest
Tue 5/268:25 pm
DEN
- SFO
Nonstop2h 45m
Southwest
Deal found 4/26![Southwest logo]()
$376
This Alaska Airlines deal was found by Cheapflights users on 4/25. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/303:00 pm
SFO
- DEN
2 stops7h 59m
Alaska Airlines
Fri 6/52:19 pm
DEN
- SFO
1 stop6h 01m
Alaska Airlines
Deal found 4/25![Alaska Airlines logo]()
$388
This Southwest deal was found by Cheapflights users on 4/22. 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.
Wed 5/277:15 pm
SFO
- DEN
Nonstop2h 35m
Southwest
Sun 5/318:55 pm
DEN
- SFO
Nonstop2h 45m
Southwest
Deal found 4/22![Southwest logo]()
$379
This Delta deal was found by Cheapflights users on 4/26. 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.
Wed 5/2011:55 am
SFO
- DEN
1 stop4h 40m
Delta
Wed 5/275:30 am
DEN
- SFO
2 stops7h 59m
Delta
Deal found 4/26![Delta logo]()
$404
This Southwest deal was found by Cheapflights users on 4/23. 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.
Sat 6/135:00 am
SFO
- DEN
2 stops7h 50m
Southwest
Thu 6/186:15 am
DEN
- SFO
2 stops6h 05m
Southwest
Deal found 4/23![Southwest logo]()
$398
Last-minute flights from San Francisco to Fort CollinsDiscover last-minute flight deals from San Francisco to Fort Collins. Data last updated April 28, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Fort Collins. Data last updated April 28, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 4/27. 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 5/69:26 pm
SFO
- DEN
1 stop11h 35m
Frontier
Sat 5/910:29 pm
DEN
- SFO
Nonstop2h 54m
Frontier
Deal found 4/27![Frontier logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 4/24. 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.
Sat 5/96:00 am
SFO
- DEN
Nonstop2h 52m
Frontier
Tue 5/127:20 am
DEN
- SFO
1 stop13h 23m
Frontier
Deal found 4/24![Frontier logo]()
$164
This Cheapflightsfares deal was found by Cheapflights users on 4/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/116:00 am
SFO
- DEN
Nonstop2h 52m
Frontier
Thu 5/147:12 am
DEN
- SFO
1 stop14h 59m
Frontier
Deal found 4/24![Frontier logo]()
$167
This Super.com deal was found by Cheapflights users on 4/23. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/136:00 am
SFO
- DEN
Nonstop2h 52m
Frontier
Mon 5/256:05 am
DEN
- SFO
Nonstop2h 56m
Frontier
Deal found 4/23![Frontier logo]()
$169
This Frontier deal was found by Cheapflights users on 4/27. 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.
Sat 5/166:00 am
SFO
- DEN
Nonstop2h 52m
Frontier
Tue 5/199:52 am
DEN
- SFO
Nonstop2h 55m
Frontier
Deal found 4/27![Frontier logo]()
$173
This Frontier deal was found by Cheapflights users on 4/25. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/189:56 pm
SFO
- DEN
1 stop11h 05m
Frontier
Sat 5/232:00 pm
DEN
- SFO
1 stop8h 04m
Frontier
Deal found 4/25![Frontier logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Tue 5/198:28 pm
SFO
- DEN
1 stop5h 57m
Frontier
Thu 5/217:00 am
DEN
- SFO
1 stop15h 04m
Frontier
Deal found 4/26![Frontier logo]()
$162
This Super.com deal was found by Cheapflights users on 4/24. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/209:26 pm
SFO
- DEN
1 stop11h 35m
Frontier
Wed 5/272:00 pm
DEN
- SFO
1 stop8h 04m
Frontier
Deal found 4/24![Frontier logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Mon 5/259:34 am
SFO
- DEN
1 stop22h 48m
Frontier
Sat 5/306:05 am
DEN
- SFO
Nonstop2h 56m
Frontier
Deal found 4/26![Frontier logo]()
$171
This Cheapflightsfares deal was found by Cheapflights users on 4/23. 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.
Tue 5/2612:52 pm
SFO
- DEN
Nonstop2h 51m
Frontier
Fri 5/296:05 am
DEN
- SFO
Nonstop2h 56m
Frontier
Deal found 4/23![Frontier logo]()
$172
This Cheapflightsfares deal was found by Cheapflights users on 4/27. 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 5/295:25 pm
SFO
- DEN
1 stop6h 06m
Frontier
Tue 6/210:29 pm
DEN
- SFO
Nonstop2h 54m
Frontier
Deal found 4/27![Frontier logo]()
$163
This Frontier deal was found by Cheapflights users on 4/23. 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.
Sat 5/308:56 am
SFO
- DEN
Nonstop2h 54m
Frontier
Fri 6/59:03 am
DEN
- SFO
1 stop8h 27m
Frontier
Deal found 4/23![Frontier logo]()
$168
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 April 28, 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 April 28, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 4/28. 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 6/139:43 pm
SFO
- DEN
Nonstop2h 51m
Frontier
Deal found 4/28![Frontier logo]()
$94
This Flightnetwork deal was found by Cheapflights users on 4/27. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/136:00 am
SFO
- DEN
Nonstop2h 52m
Frontier
Deal found 4/27![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 5/1810:40 pm
SFO
- DEN
2 stops18h 27m
Frontier
Deal found 4/27![Frontier logo]()
$96
This Super.com deal was found by Cheapflights users on 4/24. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/116:00 am
SFO
- DEN
Nonstop2h 52m
Frontier
Deal found 4/24![Frontier logo]()
$97
This Super.com deal was found by Cheapflights users on 4/23. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/1610:27 pm
SFO
- DEN
1 stop10h 39m
Frontier
Deal found 4/23![Frontier logo]()
$99
This Super.com deal was found by Cheapflights users on 4/26. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/710:56 pm
SFO
- DEN
1 stop9h 24m
Frontier
Deal found 4/26![Frontier logo]()
$100
This Kiwi.com deal was found by Cheapflights users on 4/24. 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.
Wed 6/177:07 pm
SFO
- DEN
1 stop13h 30m
Frontier
Deal found 4/24![Frontier logo]()
$101
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2012:33 pm
SFO
- DEN
Nonstop2h 43m
Frontier
Deal found 4/23![Frontier logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 4/27. 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.
Sun 5/179:19 am
SFO
- DEN
1 stop27h 53m
Frontier
Deal found 4/27![Frontier logo]()
$103
This Kiwi.com deal was found by Cheapflights users on 4/24. 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.
Fri 5/296:45 pm
SFO
- DEN
1 stop12h 23m
Frontier
Deal found 4/24![Frontier logo]()
$104
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/2110:58 pm
SFO
- DEN
1 stop24h 40m
Frontier
Deal found 4/23![Frontier logo]()
$105
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 7/275:11 pm
SFO
- DEN
1 stop20h 41m
Frontier
Deal found 4/27![Frontier logo]()
$106
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 April 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $160 (Frontier) |
One-way from | $94 (Cheapflightsfares) |
Popular in | March |
Cheapest in | October |
Average price | $290 |
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 April 28, 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
Wed 5/27
4:55 pm-11:44 pm
1 stop5h 49m
Denver Intl
Mon 6/1
6:19 pm-9:30 pm
1 stop4h 11m
$243
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Sun 5/24
5:55 am-7:15 pm
2 stops12h 20m
Denver Intl
Fri 5/29
1:08 pm-12:05 am
1 stop11h 57m
$288
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Wed 7/15
5:30 am-9:00 am
Nonstop2h 30m
Denver Intl
Mon 7/20
6:15 am-11:20 am
2 stops6h 05m
$332
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Tue 5/19
5:55 am-2:58 pm
2 stops8h 03m
Denver Intl
Tue 5/26
6:19 pm-12:27 am
1 stop7h 08m
$336
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Sat 5/30
3:00 pm-11:59 pm
2 stops7h 59m
Denver Intl
Wed 6/3
6:40 am-10:49 am
1 stop5h 09m
$343
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Tue 6/2
8:20 am-5:05 pm
2 stops7h 45m
Denver Intl
Thu 6/4
6:15 am-11:20 am
2 stops6h 05m
$347
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Sun 5/10
11:52 am-6:29 pm
1 stop5h 37m
Denver Intl
Wed 5/13
12:02 pm-4:48 pm
1 stop5h 46m
$362
Quickest round-trip
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Sat 5/23
5:40 am-9:15 am
Nonstop2h 35m
Denver Intl
Tue 5/26
8:25 pm-10:10 pm
Nonstop2h 45m
$376
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Wed 5/27
7:15 pm-10:50 pm
Nonstop2h 35m
Denver Intl
Sun 5/31
8:55 pm-10:40 pm
Nonstop2h 45m
$379
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Sat 5/30
3:00 pm-11:59 pm
2 stops7h 59m
Denver Intl
Fri 6/5
2:19 pm-7:20 pm
1 stop6h 01m
$388
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 April 28, 2026.
Unlike at noon, when flights are generally more expensive, you can save up to 32% on flights from San Francisco to Fort Collins by exploring options for tickets in the evening.
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 April 25, 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.
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 April 28, 2026.
The most flights from SFO to FC9 are scheduled on a Monday (53 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (6 on average).
How much does it cost to fly round-trip from San Francisco to Fort Collins?
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 April 28, 2026.
See what other customers who have flown with Southwest,United Airlines, andAllegiant Air 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.
Entertainment
7.5
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
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
See prices for flight routes from nearby airports that may be better suited for you.
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 April 28, 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 April 28, 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 7 airlines flying from San Francisco to Fort Collins
Discover the top 7 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 April 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$80 | Average$212 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$87 | Average$96 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$157 | Average$300 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$176 | Average$508 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$178 | Average$352 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$216 | Average$326 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$226 | Average$337 | FlexibilityNo cancel fee | On-time62% |