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$172+ 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 2/28. Fares are subject to change and may not be available on all flights or dates of travel.
CUN — SAN
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
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 January 27, 2026.

This Frontier deal was found by Cheapflights users on 1/26. 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.
Sat 2/211:18 pm
CUN
-
SAN
2 stops22h 06m
Frontier
Wed 2/257:11 am
SAN
-
CUN
1 stop7h 58m
Frontier
Deal found 1/26$304
This Frontier deal was found by Cheapflights users on 1/25. 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.
Wed 3/119:53 am
CUN
-
SAN
1 stop13h 21m
Frontier
Wed 3/186:25 am
SAN
-
CUN
1 stop7h 52m
Frontier
Deal found 1/25$341
This United Airlines deal was found by Cheapflights users on 1/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/208:39 am
CUN
-
SAN
1 stop10h 59m
United Airlines
Wed 2/258:00 am
SAN
-
CUN
1 stop6h 50m
United Airlines
Deal found 1/26$343
This Frontier deal was found by Cheapflights users on 1/25. 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.
Tue 2/102:24 pm
CUN
-
SAN
1 stop10h 17m
Frontier
Sat 2/1412:23 pm
SAN
-
CUN
1 stop25h 54m
Frontier
Deal found 1/25$359
This United Airlines deal was found by Cheapflights users on 1/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/63:07 pm
CUN
-
SAN
1 stop7h 41m
United Airlines
Mon 3/96:15 am
SAN
-
CUN
1 stop7h 31m
United Airlines
Deal found 1/26$366
This Frontier deal was found by Cheapflights users on 1/24. 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.
Sun 2/1512:24 pm
CUN
-
SAN
1 stop14h 44m
Frontier
Wed 2/187:11 am
SAN
-
CUN
1 stop7h 58m
Frontier
Deal found 1/24$388
This United Airlines deal was found by Cheapflights users on 1/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/158:39 am
CUN
-
SAN
1 stop12h 54m
United Airlines
Wed 2/188:00 am
SAN
-
CUN
1 stop6h 50m
United Airlines
Deal found 1/26$390
This eDestinos deal was found by Cheapflights users on 1/24. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/1512:24 pm
CUN
-
SAN
1 stop22h 16m
Multiple Airlines
Wed 2/187:11 am
SAN
-
CUN
3 stops39h 25m
Multiple Airlines
Deal found 1/24$402
This Delta deal was found by Cheapflights users on 1/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1111:05 am
CUN
-
SAN
2 stops14h 09m
Delta
Wed 3/189:55 pm
SAN
-
CUN
2 stops11h 55m
Delta
Deal found 1/25$408

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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$304
(Frontier)

One-way from

$172
(Trip.com)

Popular in

February

Cheapest in

October
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. 36% potential increase in price ($266 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 14% potential price decrease ($59 potential savings vs. average RT price).
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 January 27, 2026.
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

Fri 2/20

8:39 am-4:38 pm

1 stop10h 59m

San Diego

Wed 2/25

8:00 am-5:50 pm

1 stop6h 50m

$343

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Tue 2/10

2:24 pm-9:41 pm

1 stop10h 17m

San Diego

Sat 2/14

12:23 pm-5:17 pm

1 stop25h 54m

$359

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Fri 3/6

1:37 pm-9:03 pm

1 stop10h 26m

San Diego

Mon 3/9

6:15 am-7:18 pm

2 stops11h 03m

$366

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Wed 3/11

5:30 am-7:48 pm

2 stops16h 18m

San Diego

Wed 3/18

6:15 am-3:46 pm

1 stop7h 31m

$366

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Sat 2/21

4:51 pm-10:00 pm

1 stop8h 09m

San Diego

Wed 2/25

8:00 am-5:50 pm

1 stop6h 50m

$390

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Sun 2/15

8:39 am-6:33 pm

1 stop12h 54m

San Diego

Wed 2/18

8:00 am-5:50 pm

1 stop6h 50m

$390

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Sun 2/15

12:24 pm-7:40 am

1 stop22h 16m

San Diego

Wed 2/18

9:45 am-4:32 pm

2 stops27h 47m

$397

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Sat 2/28

1:18 pm-12:08 am

2 stops13h 50m

$172

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Wed 2/11

8:45 am-3:57 pm

1 stop10h 12m

$196

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Tue 3/31

10:08 am-9:14 pm

1 stop13h 06m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/24

Showing 1-10 of 16 results
1
2
  • Most accurate provider: When it comes to deals on Cancún-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Cancún-San Diego flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 January 27, 2026.
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
9,205 reviews

Entertainment

7.1

Crew

8.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

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
9,205 reviews
United Airlines
7.4
Good
9,205 reviews

Entertainment

7.1

Crew

8.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

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?

    United Airlines and Frontier can get you from Cancún to San Diego in just under 10h 17m. Your travel time can differ by up to 42m. 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 45% 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 American Airlines and Delta, with prices starting from $246 and $247, 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
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove

Browse thousands of different options on Cheapflights for your next trip

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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 January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$255Average$431FlexibilityNo cancel feeOn-time69%

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