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$154+ Cheap flights from Cancún (CUN) to San Diego (SAN)

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 1/16. Fares are subject to change and may not be available on all flights or dates of travel.
CUN — SAN
Jan 2 — Jan 91
Fri 1/2
Fri 1/9
1 adult, Economy
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Cheap flight deals from Cancún to San Diego

Cheapest flights from Cancún to San Diego
Explore the most affordable flight options available from Cancún to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 3, 2025.

This Mytrip deal was found by Cheapflights users on 12/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3111:33 amCUN - SAN
2 stops52h 42mFrontier
Wed 1/73:29 pmSAN - CUN
1 stop22h 28mFrontier
Deal found 12/2$315
This Frontier deal was found by Cheapflights users on 12/2. 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 12/234:58 pmCUN - SAN
1 stop10h 01mFrontier
Tue 1/67:00 amSAN - CUN
1 stop7h 36mFrontier
Deal found 12/2$332
This Delta deal was found by Cheapflights users on 12/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/255:20 pmCUN - SAN
1 stop8h 53mDelta
Tue 12/303:37 pmSAN - CUN
1 stop16h 38mDelta
Deal found 12/1$340
This Mytrip deal was found by Cheapflights users on 12/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2912:34 pmCUN - SAN
2 stops24h 23mFrontier
Sun 1/46:25 amSAN - CUN
1 stop7h 47mFrontier
Deal found 12/1$349
This United Airlines deal was found by Cheapflights users on 11/30. 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.
Fri 12/193:07 pmCUN - SAN
1 stop7h 50mUnited Airlines
Wed 12/243:00 pmSAN - CUN
1 stop17h 25mUnited Airlines
Deal found 11/30$400
This Mytrip deal was found by Cheapflights users on 11/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/194:58 pmCUN - SAN
1 stop10h 01mFrontier
Wed 12/241:06 pmSAN - CUN
2 stops25h 06mFrontier
Deal found 11/30$416

Find flight deals from Cancún to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Cancún (CUN) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$315
(Mytrip)

One-way from

$154
(Trip.com)

Popular in

January

Cheapest in

August

Average price

$399
Provider with most accurate pricing for Cancun-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Cancun-San Diego flights.
Search Deals
From Cancun to San Diego
Search Deals
One-way flight from Cancun to San Diego
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($128 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Cancún to San Diego 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 December 3, 2025.
Use the filters below to find and compare flights from Cancún to San Diego that are best for you.

Fly from

Cancún

Fly to

San Diego

Route

Depart

Return

Price

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Wed 12/31

11:33 am-1:15 pm

2 stops52h 42m

San Diego

Wed 1/7

3:29 pm-4:57 pm

1 stop22h 28m

$315

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Tue 12/23

12:24 pm-11:47 pm

1 stop14h 23m

San Diego

Tue 1/6

7:00 am-5:36 pm

1 stop7h 36m

$332

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Thu 12/25

5:20 pm-11:13 pm

1 stop8h 53m

San Diego

Tue 12/30

3:37 pm-11:15 am

1 stop16h 38m

$340

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Fri 1/16

11:05 am-12:11 am

1 stop16h 06m

San Diego

Fri 1/23

5:10 pm-12:19 pm

1 stop16h 09m

$346

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Mon 12/29

12:34 pm-9:57 am

2 stops24h 23m

San Diego

Sun 1/4

6:25 am-5:12 pm

1 stop7h 47m

$349

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Wed 12/31

7:41 am-11:37 pm

1 stop18h 56m

San Diego

Wed 1/7

8:37 pm-4:46 pm

1 stop17h 09m

$382

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Thu 1/15

11:05 am-12:24 am

1 stop16h 19m

$160

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Tue 12/23

12:24 pm-11:47 pm

1 stop14h 23m

$178

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Fri 1/16

1:21 pm-12:11 am

2 stops13h 50m

$182

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Fri 1/9

2:04 pm-1:51 pm

2 stops26h 47m

$186

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

Showing 1-10 of 15 results
1
2

Compare providers for flights from Cancún to San Diego

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Cancún to San Diego in December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Cancún-San Diego flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Cancún-San Diego flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Cancún-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Cancún-San Diego flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Cancún-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Cancún to San Diego

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

What is the cheapest month to book a flight from Cancún to San Diego?

Currently, March is the cheapest month in which you can book a flight from Cancún to San Diego (average of $167). Flying from Cancún to San Diego in September is currently the most expensive (average of $443). 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.

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. 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 San Diego. Reviews last updated December 3, 2025.
Read through reviews of airlines operating flights from Cancún to San Diego, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,063 reviews

Crew

8.1

Boarding

7.7

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
9,063 reviews
United Airlines
7.4
Good
9,063 reviews

Crew

8.1

Boarding

7.7

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Related info for your journey

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

  • How long is the flight from Cancún to San Diego?

    Frontier and Delta can get you from Cancún to San Diego in just under 8h 53m. Your travel time can differ by up to 43h 49m. There are 2025 mi between Cancún and San Diego. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from Cancún to San Diego round-trip?

    According to our current data, United Airlines ($255), offers the cheapest pricing from Cancún to San Diego. You may be able to fly from Cancún to San Diego for 46% less than the average price by searching for this airline.

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

    $153 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Delta and American Airlines, with prices starting from $187 and $245, respectively.

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

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

  • How can I find direct flights from Cancún to San Diego?

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

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

    Yes. Cheapflights offers flight deals from Cancún to San Diego 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 Cancún to San Diego?

    Currently, March is the cheapest month in which you can book a flight from Cancún to San Diego (average of $167). Flying from Cancún to San Diego in September is currently the most expensive (average of $443). 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.

See more FAQs

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
Coronado
La Mesa
Poway
Lemon Grove
Julian
National City

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Top airline flying from Cancún to San Diego

Discover the top airline that operate flights from Cancún to San Diego. 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 December 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$255Average$465FlexibilityNo cancel feeOn-time69%

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