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$142+ 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 9/13. Fares are subject to change and may not be available on all flights or dates of travel.
CUN — SAN
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheap 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 August 20, 2025.

Round-trip from

$254
(United Airlines)

One-way from

$142
(FlightHub)

Popular in

January

Cheapest in

August

Average price

$305
From Cancun to San Diego
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One-way flight from Cancun to San Diego
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Highest demand for flights based on searches. 35% potential increase in price ($269 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find 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 August 20, 2025.

This United Airlines deal was found by Cheapflights users on 8/19. 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.
Thu 10/231:12 pmCUN - SAN
1 stop8h 50mUnited Airlines
Sun 10/266:47 pmSAN - CUN
1 stop17h 58mUnited Airlines
Deal found 8/19$254
This United Airlines deal was found by Cheapflights users on 8/18. 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.
Thu 9/45:22 pmCUN - SAN
2 stops17h 47mUnited Airlines
Sat 9/137:21 pmSAN - CUN
2 stops12h 43mUnited Airlines
Deal found 8/18$256
This United Airlines deal was found by Cheapflights users on 8/18. 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.
Tue 9/161:43 pmCUN - SAN
1 stop9h 58mUnited Airlines
Thu 9/188:11 pmSAN - CUN
1 stop18h 01mUnited Airlines
Deal found 8/18$297
This Delta deal was found by Cheapflights users on 8/19. 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 10/238:10 amCUN - SAN
2 stops15h 10mDelta
Sun 10/2610:30 pmSAN - CUN
1 stop10h 45mDelta
Deal found 8/19$307
This Priceline deal was found by Cheapflights users on 8/18. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/169:54 amCUN - SAN
2 stops23h 35mSpirit Airlines
Thu 9/186:15 amSAN - CUN
2 stops24h 40mSpirit Airlines
Deal found 8/18$323
This United Airlines deal was found by Cheapflights users on 8/18. 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.
Mon 9/153:46 pmCUN - SAN
1 stop8h 28mUnited Airlines
Thu 9/188:11 pmSAN - CUN
1 stop18h 01mUnited Airlines
Deal found 8/18$339
This Priceline deal was found by Cheapflights users on 8/19. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/411:34 amCUN - SAN
1 stop24h 01mFrontier
Sat 10/114:06 pmSAN - CUN
1 stop16h 09mFrontier
Deal found 8/19$345
This Priceline deal was found by Cheapflights users on 8/19. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/49:54 amCUN - SAN
2 stops15h 40mMultiple Airlines
Sat 10/114:06 pmSAN - CUN
1 stop16h 09mMultiple Airlines
Deal found 8/19$352
This Mytrip deal was found by Cheapflights users on 8/18. 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.
Thu 9/410:20 amCUN - SAN
2 stops23h 09mSpirit Airlines
Sat 9/137:47 pmSAN - CUN
3 stops14h 00mSpirit Airlines
Deal found 8/18$365
This United Airlines deal was found by Cheapflights users on 8/19. 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 10/265:30 pmCUN - SAN
1 stop18h 51mUnited Airlines
Fri 10/317:50 pmSAN - CUN
2 stops21h 28mUnited Airlines
Deal found 8/19$369

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 August 20, 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

Thu 10/23

1:12 pm-8:02 pm

1 stop8h 50m

San Diego

Sun 10/26

6:47 pm-2:45 pm

1 stop17h 58m

$254

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Thu 9/4

1:04 pm-12:15 am

1 stop13h 11m

San Diego

Sat 9/13

10:30 pm-2:28 pm

1 stop13h 58m

$256

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Tue 9/16

1:43 pm-9:41 pm

1 stop9h 58m

San Diego

Thu 9/18

8:11 pm-4:12 pm

1 stop18h 01m

$297

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Thu 10/23

8:10 am-9:20 pm

2 stops15h 10m

San Diego

Sun 10/26

10:30 pm-11:15 am

1 stop10h 45m

$307

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Tue 9/16

9:54 am-7:29 am

2 stops23h 35m

San Diego

Thu 9/18

6:15 am-8:55 am

2 stops24h 40m

$323

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Mon 9/15

3:46 pm-10:14 pm

1 stop8h 28m

San Diego

Thu 9/18

8:11 pm-4:12 pm

1 stop18h 01m

$339

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Sat 10/4

11:34 am-9:35 am

1 stop24h 01m

San Diego

Sat 10/11

4:06 pm-10:15 am

1 stop16h 09m

$345

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Sat 10/4

9:54 am-11:34 pm

2 stops15h 40m

San Diego

Sat 10/11

4:06 pm-10:15 am

1 stop16h 09m

$352

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Thu 9/4

10:20 am-7:29 am

2 stops23h 09m

San Diego

Sat 9/13

7:47 pm-11:47 am

3 stops14h 00m

$365

CancúnSan Diego

CUN - SAN

CUNSAN

Cancun

Sat 9/13

10:20 am-7:29 am

2 stops23h 09m

$142

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Showing 1-10 of 15 results
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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, August is the cheapest month in which you can book a flight from Cancún to San Diego (average of $286). Flying from Cancún to San Diego in March is currently the most expensive (average of $366). 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.

How much does it cost to fly round-trip from Cancún to San Diego?

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 August 20, 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
8,928 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
United Airlines
7.4
Good
8,928 reviews
United Airlines
7.4
Good
8,928 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

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 can get you from Cancún to San Diego in just under 8h 50m. Your travel time can differ by up to . There are 2025 mi between Cancún and San Diego.

  • 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 48% less than the average price by searching for this airline.

  • 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, August is the cheapest month in which you can book a flight from Cancún to San Diego (average of $286). Flying from Cancún to San Diego in March is currently the most expensive (average of $366). 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
La Mesa
Poway
Lemon Grove
Coronado
Imperial Beach
National City
Alpine

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 August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$255Average$468FlexibilityNo cancel feeOn-time69%

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