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Estes Park

$71+ Cheap flights from San Francisco (SFO) to Estes Park, 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 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — DEN
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Cheapflights Tip: The best prices from San Francisco to Estes Park are usually found in January or March, booked 53 days in advance, depart on a Friday or Saturday and return on a Thursday

Find flight deals from San Francisco to Estes Park

Cheapest flights from San Francisco to Estes Park
Explore the most affordable flight options available from San Francisco to Estes Park. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 10/27. 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.
Sat 12/66:30 amSFO - DEN
Nonstop2h 42mFrontier
Sun 12/76:00 amDEN - SFO
Nonstop2h 53mFrontier
Deal found 10/27$112
This Kiwi.com deal was found by Cheapflights users on 10/26. 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 12/910:10 pmSFO - DEN
1 stop11h 02mFrontier
Sun 12/146:00 amDEN - SFO
Nonstop2h 53mFrontier
Deal found 10/26$114
This Cheapflightsfares deal was found by Cheapflights users on 10/26. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/44:07 pmSFO - DEN
Nonstop2h 41mFrontier
Thu 12/1112:59 amDEN - SFO
1 stop13h 19mFrontier
Deal found 10/26$115
This Frontier deal was found by Cheapflights users on 10/26. 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.
Mon 11/176:34 amSFO - DEN
Nonstop2h 44mFrontier
Wed 12/36:30 amDEN - SFO
1 stop11h 21mFrontier
Deal found 10/26$116
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/128:02 amSFO - DEN
Nonstop2h 43mFrontier
Sat 11/1512:25 pmDEN - SFO
1 stop9h 46mFrontier
Deal found 10/28$117
This Frontier deal was found by Cheapflights users on 10/26. 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 11/202:54 pmSFO - DEN
Nonstop2h 40mFrontier
Thu 12/46:00 amDEN - SFO
Nonstop2h 53mFrontier
Deal found 10/26$118
This Frontier deal was found by Cheapflights users on 10/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1410:23 pmSFO - DEN
1 stop9h 40mFrontier
Tue 11/188:39 pmDEN - SFO
Nonstop2h 48mFrontier
Deal found 10/28$119
This Frontier deal was found by Cheapflights users on 10/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/156:34 amSFO - DEN
Nonstop2h 44mFrontier
Tue 11/188:39 pmDEN - SFO
Nonstop2h 48mFrontier
Deal found 10/28$120
This Frontier deal was found by Cheapflights users on 10/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/128:02 amSFO - DEN
Nonstop2h 43mFrontier
Sun 11/167:45 amDEN - SFO
Nonstop2h 48mFrontier
Deal found 10/28$121
This Cheapflightsfares deal was found by Cheapflights users on 10/28. 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.
Tue 12/26:18 amSFO - DEN
Nonstop2h 42mFrontier
Sat 12/69:05 pmDEN - SFO
1 stop13h 49mFrontier
Deal found 10/28$124
This Frontier deal was found by Cheapflights users on 10/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1312:43 pmSFO - DEN
Nonstop2h 48mFrontier
Wed 11/192:15 pmDEN - SFO
1 stop8h 07mFrontier
Deal found 10/28$125

Cheap flight deals from San Francisco to Estes Park

Keep the following information in mind while searching for San Francisco to Estes Park flight deals. Data was last updated October 29, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$112
(Cheapflightsfares)

One-way from

$71
(Booking.com)

Popular in

June

Cheapest in

January

Average price

$236
Provider with most accurate pricing for San Francisco-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Denver Intl flights.
Search Deals
From San Francisco to Estes Park
Search Deals
One-way flight from San Francisco to Estes Park
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($23 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco to Estes Park 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 October 29, 2025.
Use the filters below to find and compare flights from San Francisco to Estes Park that are best for you.

Fly from

San Francisco

Fly to

Estes Park

Route

Depart

Return

Price

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Thu 1/15

5:50 am-9:20 am

Nonstop2h 30m

Denver Intl

Mon 1/19

6:10 am-10:30 am

1 stop5h 20m

$147

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Tue 1/27

2:52 pm-11:58 pm

1 stop8h 06m

Denver Intl

Fri 1/30

7:00 am-2:02 pm

1 stop8h 02m

$156

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Sat 12/6

8:55 pm-12:30 am

Nonstop2h 35m

Denver Intl

Sat 12/13

6:00 am-7:50 am

Nonstop2h 50m

$157

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Thu 12/18

3:45 pm-11:25 pm

1 stop6h 40m

Denver Intl

Mon 12/22

6:10 pm-12:25 am

1 stop7h 15m

$177

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Tue 1/27

10:30 am-11:58 pm

2 stops12h 28m

Denver Intl

Wed 1/28

8:04 am-2:02 pm

1 stop6h 58m

$185

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Tue 1/27

6:25 am-10:05 am

Nonstop2h 40m

Denver Intl

Thu 1/29

5:18 am-7:14 am

Nonstop2h 56m

$187

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Wed 12/3

7:45 am-3:55 pm

2 stops7h 10m

Denver Intl

Wed 12/10

1:25 pm-8:10 pm

2 stops7h 45m

$187

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Thu 12/4

7:40 am-3:55 pm

2 stops7h 15m

Denver Intl

Mon 12/8

1:25 pm-8:10 pm

2 stops7h 45m

$187

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Wed 12/3

6:00 am-11:09 am

1 stop4h 09m

Denver Intl

Wed 12/3

6:22 pm-10:13 pm

1 stop4h 51m

$197

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Wed 12/17

7:35 am-9:28 pm

2 stops12h 53m

Denver Intl

Mon 12/22

6:48 pm-12:27 am

1 stop6h 39m

$201

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 23 results
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Best time to book a flight from San Francisco to Estes Park

Have a flexible travel schedule? Discover the best time to fly to Estes Park from San Francisco with our price prediction graph.
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 Estes Park

How far ahead should I book a flight from San Francisco to Estes Park?

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Estes Park. Price data was last updated on October 24, 2025.

The best time to book flights from San Francisco to Estes Park is 53 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from San Francisco to Estes Park?

Currently, February is the cheapest month in which you can book a flight from San Francisco to Estes Park (average of $28). Flying from San Francisco to Estes Park in June is currently the most expensive (average of $106). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SFO to ES9?

Find hourly flight availability from San Francisco to Estes Park. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 29, 2025.

One of the essential ways to save on airfare from San Francisco to Estes Park is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 5% on airfare.

What is the cheapest day to fly from San Francisco to Estes Park?

Use this chart to determine the cheapest time to fly round-trip from San Francisco to Estes Park. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their San Francisco to Estes Park flight should consider departing on Friday mornings 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 Estes Park

Get insights into the airlines that provide service to Estes Park. 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 Estes Park. Reviews last updated October 29, 2025.
See what other customers who have flown with Southwest, United Airlines, and American Airlines from San Francisco to Estes Park have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,240 reviews

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,240 reviews
Southwest
8.0
Very good
4,240 reviews

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
9,001 reviews
Southwest
8.0
Very good
4,240 reviews

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
11,032 reviews
Southwest
8.0
Very good
4,240 reviews

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Allegiant Air
7.2
Good
695 reviews
Southwest
8.0
Very good
4,240 reviews

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,124 reviews
Southwest
8.0
Very good
4,240 reviews

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Estes Park. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from San Francisco to Estes Park?

    San Francisco (SFO) is the airport you will fly out of if you book a flight from San Francisco to Estes Park. You should not have trouble finding flights to Estes Park from San Francisco; the airport handles an average of 34 outbound flights to Estes Park per day. You should also have plenty of airline options to choose from since 6 airlines have flights from the San Francisco airport to Estes Park. It is only a 11.8 mi journey to San Francisco (SFO) from San Francisco’s city center.

  • How popular is this San Francisco to Estes Park flight route?

    This flight path from San Francisco to Estes Park was viewed by 269 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from San Francisco to Estes Park?

    Departing from San Francisco to Estes Park will take you 2h 30m. San Francisco and Estes Park are separated by a distance of 964 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from San Francisco to Estes Park one-way?

    The cheapest airlines for a one-way flight from San Francisco to Estes Park are Alaska Airlines ($74), Southwest ($79), and United Airlines ($79).

  • What are the most reliable airlines from San Francisco to Estes Park?

    Before booking your flight to Estes Park from San Francisco, check out the most reliable airlines to get you to your destination on time: SWISS (93%), Asiana Airlines (88%), Virgin Australia( 85%).

  • What are the cheapest flights from San Francisco to Estes Park?

    While on average a flight from San Francisco to Estes Park is generally $890, our data shows the cheapest flight currently is $76. When looking at the most popular route, (San Francisco - Denver Intl), you can expect to pay $53 for that flight.

  • Can I find deals for flights from San Francisco to Estes Park that include hotel bookings?

    Yes. In addition to deals on San Francisco to Estes Park flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Francisco to Estes Park?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Estes Park.

  • Can I find deals for business class flights from San Francisco to Estes Park?

    Yes. Cheapflights offers flight deals from San Francisco to Estes Park by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Francisco to Estes Park?

    Currently, February is the cheapest month in which you can book a flight from San Francisco to Estes Park (average of $28). Flying from San Francisco to Estes Park in June is currently the most expensive (average of $106). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Top 6 airlines flying from San Francisco to Estes Park

Discover the top 6 airlines that operate flights from San Francisco to Estes Park. 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 October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$69Average$183FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$88Average$100FlexibilityNo cancel feeOn-time88%
SouthwestCheapest$157Average$277FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$171Average$383FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$176Average$428FlexibilityNo cancel feeOn-time71%
DeltaCheapest$216Average$296FlexibilityNo cancel feeOn-timeN/A

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