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Estes Park

$46+ Cheap flights from San Diego (SAN) 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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — DEN
nov. 28 — dec. 51
vr 11/28
vr 12/5
1 adult, Economy
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Cheapflights Tip: The best prices from San Diego to Estes Park are usually found in January or February, booked 65 days in advance, depart on a Friday or Thursday and return on a Wednesday

Find flight deals from San Diego to Estes Park

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

This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
za 12/204:47 pmSAN - DEN
Nonstop2h 33mFrontier
ma 12/2210:29 pmDEN - SAN
Nonstop2h 30mFrontier
Deal found 10/27$77
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.
za 12/204:47 pmSAN - DEN
Nonstop2h 33mFrontier
do 12/255:43 pmDEN - SAN
Nonstop2h 32mFrontier
Deal found 10/28$78
This Kiwi.com deal was found by Cheapflights users on 10/29. 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.
zo 12/216:25 amSAN - DEN
Nonstop2h 38mFrontier
wo 12/2410:37 pmDEN - SAN
1 stop14h 34mFrontier
Deal found 10/29$79
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.
vr 12/264:47 pmSAN - DEN
Nonstop2h 33mFrontier
ma 12/2910:29 pmDEN - SAN
Nonstop2h 30mFrontier
Deal found 10/28$81
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.
do 12/42:30 pmSAN - DEN
1 stop4h 39mFrontier
zo 12/75:43 pmDEN - SAN
Nonstop2h 32mFrontier
Deal found 10/28$82
This Kiwi.com deal was found by Cheapflights users on 10/29. 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.
zo 12/214:47 pmSAN - DEN
Nonstop2h 33mFrontier
do 12/256:15 amDEN - SAN
1 stop4h 42mFrontier
Deal found 10/29$87
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.
do 12/259:14 pmSAN - DEN
1 stop10h 41mFrontier
vr 1/210:29 pmDEN - SAN
Nonstop2h 30mFrontier
Deal found 10/28$89
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.
vr 12/197:21 pmSAN - DEN
1 stop7h 37mFrontier
zo 12/215:43 pmDEN - SAN
Nonstop2h 32mFrontier
Deal found 10/28$90
This Kiwi.com deal was found by Cheapflights users on 10/29. 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.
za 12/134:47 pmSAN - DEN
Nonstop2h 33mFrontier
za 12/2010:44 pmDEN - SAN
1 stop12h 29mFrontier
Deal found 10/29$91
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.
vr 12/264:47 pmSAN - DEN
Nonstop2h 33mFrontier
di 12/3010:29 pmDEN - SAN
Nonstop2h 30mFrontier
Deal found 10/28$92
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
wo 12/108:42 pmSAN - DEN
Nonstop2h 17mMultiple Airlines
do 12/185:43 pmDEN - SAN
Nonstop2h 32mMultiple Airlines
Deal found 10/28$93
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.
di 11/116:58 amSAN - DEN
Nonstop2h 37mFrontier
wo 11/1910:20 amDEN - SAN
Nonstop2h 32mFrontier
Deal found 10/28$97

Cheap flight deals from San Diego to Estes Park

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

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$76
(eDestinos)

One-way from

$46
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$163
Provider with most accurate pricing for San Diego-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Diego-Denver Intl flights.
Search Deals
From San Diego to Estes Park
Search Deals
One-way flight from San Diego to Estes Park
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($6 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 Diego 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 oktober 29, 2025.
Use the filters below to find and compare flights from San Diego to Estes Park that are best for you.

Fly from

San Diego

Fly to

Estes Park

Route

Depart

Return

Price

San DiegoDenver

SAN - DEN

SANDEN

San Diego

wo 12/10

6:25 am-6:28 pm

1 stop11h 03m

Denver Intl

za 12/13

10:29 pm-11:59 pm

Nonstop2h 30m

$82

San DiegoDenver

SAN - DEN

SANDEN

San Diego

di 11/18

8:00 am-3:19 pm

1 stop6h 19m

Denver Intl

zo 11/23

6:20 am-8:01 am

Nonstop2h 41m

$82

San DiegoDenver

SAN - DEN

SANDEN

San Diego

vr 12/12

8:42 pm-11:59 pm

Nonstop2h 17m

Denver Intl

zo 12/14

5:43 pm-7:15 pm

Nonstop2h 32m

$93

San DiegoDenver

SAN - DEN

SANDEN

San Diego

vr 12/12

1:33 pm-3:58 am

1 stop13h 25m

Denver Intl

zo 12/14

5:43 pm-7:15 pm

Nonstop2h 32m

$99

San DiegoDenver

SAN - DEN

SANDEN

San Diego

ma 1/5

7:21 pm-3:58 am

1 stop7h 37m

Denver Intl

vr 1/9

5:43 pm-7:15 pm

Nonstop2h 32m

$100

San DiegoDenver

SAN - DEN

SANDEN

San Diego

ma 12/29

8:14 pm-11:59 pm

Nonstop2h 45m

Denver Intl

di 1/6

12:47 pm-2:40 pm

Nonstop2h 53m

$117

San DiegoDenver

SAN - DEN

SANDEN

San Diego

di 3/3

3:15 pm-6:33 pm

Nonstop2h 18m

Denver Intl

wo 3/4

12:30 pm-1:56 pm

Nonstop2h 26m

$117

San DiegoDenver

SAN - DEN

SANDEN

San Diego

di 11/18

8:15 am-11:34 am

Nonstop2h 19m

Denver Intl

zo 11/23

6:00 am-7:34 am

Nonstop2h 34m

$117

San DiegoDenver

SAN - DEN

SANDEN

San Diego

wo 12/31

6:30 am-12:10 pm

1 stop4h 40m

Denver Intl

zo 1/4

6:35 am-8:10 am

Nonstop2h 35m

$122

San DiegoDenver

SAN - DEN

SANDEN

San Diego

ma 12/29

8:50 pm-12:15 am

Nonstop2h 25m

Denver Intl

vr 1/2

3:35 pm-6:55 pm

1 stop4h 20m

$122

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

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

Have a flexible travel schedule? Discover the best time to fly to Estes Park from San Diego 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 Diego to Estes Park

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

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

The best time to book flights from San Diego to Estes Park is 58 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 Diego to Estes Park?

Currently, January is the cheapest month in which you can book a flight from San Diego to Estes Park (average of $24). Flying from San Diego to Estes Park in June is currently the most expensive (average of $86). 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 SAN to ES9?

Find hourly flight availability from San Diego 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 oktober 29, 2025.

One of the essential ways to save on airfare from San Diego to Estes Park is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 28% on airfare.

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

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

Travelers seeking maximum savings on their San Diego to Estes Park flight should consider departing on Saturday afternoons 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 oktober 29, 2025.
Read through reviews of airlines operating flights from San Diego to Estes Park, such as Alaska Airlines, Southwest, and Hawaiian Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,214 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

8.0

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
11,214 reviews
Alaska Airlines
8.0
Very good
11,214 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

8.0

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Southwest
8.0
Very good
4,242 reviews
Alaska Airlines
8.0
Very good
11,214 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

8.0

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Hawaiian Airlines
7.8
Good
2,797 reviews
Alaska Airlines
8.0
Very good
11,214 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

8.0

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,998 reviews
Alaska Airlines
8.0
Very good
11,214 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

8.0

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Frontier
5.8
Fair
3,123 reviews
Alaska Airlines
8.0
Very good
11,214 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

8.0

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

Related info for your journey

Find useful and relevant information for your journey from San Diego 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 Diego to Estes Park?

    If you book a flight to Estes Park from San Diego, you will be flying from San Diego, which is the city’s only airport. San Diego (SAN) is located 2.6 mi from the center of San Diego. There are 18 flights from San Diego to Estes Park per day from 5 different airlines.

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

    Within the past month, 205 users have taken a look at flights from San Diego to Estes Park.

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

    Frontier can get you from San Diego to Estes Park in just under 11h 03m. Your travel time can differ by up to . The distance between San Diego and Estes Park is about 852 mi.

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

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $53. However, be on the lookout for offers from United Airlines and Alaska Airlines, as they are both options that can get you from San Diego to Estes Park for a low price.

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

    Before booking your flight to Estes Park from San Diego, check out the most reliable airlines to get you to your destination on time: SWISS (93%), Alaska Airlines (91%), Hawaiian Airlines( 91%).

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

    On average you can expect to pay $798 for a flight from San Diego to Estes Park. The cheapest flight overall is $48 while the most popular route, (San Diego - Denver Intl) is currently priced at $83.

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

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

  • How can I find direct flights from San Diego 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 Diego to Estes Park.

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

    Yes. Cheapflights offers flight deals from San Diego 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 Diego to Estes Park?

    Currently, January is the cheapest month in which you can book a flight from San Diego to Estes Park (average of $24). Flying from San Diego to Estes Park in June is currently the most expensive (average of $86). 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 5 airlines flying from San Diego to Estes Park

Discover the top 5 airlines that operate flights from San Diego 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 oktober 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$68Average$159FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$68Average$192FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$101Average$185FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$128Average$264FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$150Average$307FlexibilityNo cancel feeOn-time69%

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