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Cheap flights from San Francisco to Cancún from $335

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 19/4. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — CUN
16 Apr — 23 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from San Francisco to Cancún

Enter your travel dates to find the best prices.

Cheapest flights from San Francisco to Cancún
Explore the most affordable flight options available from San Francisco to Cancún. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 March 2026.

Tue 28/409:20
SFO
-
CUN
2 stops29h 00m
Alaska Airlines
Tue 5/517:30
CUN
-
SFO
1 stop18h 26m
Alaska Airlines
Deal found 15/3$639
Mon 27/407:00
SFO
-
CUN
2 stops29h 58m
Alaska Airlines
Tue 5/517:30
CUN
-
SFO
1 stop16h 10m
Alaska Airlines
Deal found 15/3$666
Sat 13/623:55
SFO
-
CUN
1 stop16h 40m
Delta
Fri 3/708:00
CUN
-
SFO
1 stop14h 58m
Delta
Deal found 16/3$682
Sat 25/419:40
SFO
-
CUN
1 stop17h 18m
Alaska Airlines
Sat 2/517:30
CUN
-
SFO
1 stop16h 10m
Alaska Airlines
Deal found 15/3$684
Mon 15/623:55
SFO
-
CUN
1 stop17h 45m
Delta
Thu 25/607:06
CUN
-
SFO
1 stop15h 52m
Delta
Deal found 16/3$689
Sat 11/720:05
SFO
-
CUN
1 stop17h 00m
Delta
Thu 16/716:27
CUN
-
SFO
1 stop9h 02m
Delta
Deal found 14/3$694
Mon 13/420:45
SFO
-
CUN
1 stop16h 15m
Alaska Airlines
Tue 14/417:15
CUN
-
SFO
1 stop26h 29m
Alaska Airlines
Deal found 15/3$697
Mon 4/520:45
SFO
-
CUN
1 stop16h 13m
Alaska Airlines
Thu 7/516:08
CUN
-
SFO
2 stops43h 48m
Alaska Airlines
Deal found 16/3$700
Sun 19/422:35
SFO
-
CUN
2 stops11h 25m
Delta
Wed 29/414:26
CUN
-
SFO
1 stop9h 59m
Delta
Deal found 15/3$702
Sat 11/423:27
SFO
-
CUN
Nonstop5h 21m
United Airlines
Sat 18/417:22
CUN
-
SFO
1 stop8h 37m
United Airlines
Deal found 12/3$703
Wed 3/623:55
SFO
-
CUN
1 stop9h 25m
Delta
Mon 8/612:35
CUN
-
SFO
2 stops13h 10m
Delta
Deal found 13/3$709
Fri 1/521:00
SFO
-
CUN
2 stops12h 45m
Delta
Mon 11/506:03
CUN
-
SFO
2 stops11h 53m
Delta
Deal found 13/3$716

Find flight deals from San Francisco to Cancún

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Cancún (CUN). 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 17 March 2026.

Round-trip from

$639

One-way from

$335

Popular in

December

Cheapest in

January

Average price

$861
Alaska Airlines
  • Alaska Airlines
  • 28/4-5/5
  • 3 total stops
  • 47h 26m total
  • San Francisco to Cancún
Search Deals
Delta
  • Delta
  • 19/4
  • 1 total stop
  • 11h 38m total
  • San Francisco to Cancún
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($46 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($24 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from San Francisco to Cancún 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 647,157 searches. Data last updated 17 March 2026.
Use the filters below to find and compare flights from San Francisco to Cancún that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Tue 14/4

00:45-11:45

1 stop9h 00m

Cancun

Wed 22/4

17:01-20:49

Nonstop5h 48m

$694

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Mon 4/5

19:05-06:41

1 stop9h 36m

Cancun

Wed 13/5

12:57-16:47

Nonstop5h 50m

$694

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Sun 17/5

05:40-19:43

2 stops12h 03m

Cancun

Sat 23/5

08:08-21:19

2 stops15h 11m

$737

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Mon 20/4

16:05-11:45

2 stops17h 40m

Cancun

Tue 28/4

12:45-23:15

2 stops12h 30m

$760

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Mon 3/8

07:04-17:29

1 stop8h 25m

Cancun

Fri 7/8

14:00-23:52

2 stops11h 52m

$814
Fastest return journey

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Wed 1/7

23:27-06:48

Nonstop5h 21m

Cancun

Mon 6/7

17:01-20:49

Nonstop5h 48m

$842

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Tue 26/5

07:15-19:43

2 stops10h 28m

Cancun

Mon 1/6

14:10-23:57

2 stops11h 47m

$849

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Thu 28/5

06:00-16:52

1 stop8h 52m

Cancun

Fri 5/6

17:01-20:49

Nonstop5h 48m

$851

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Sat 6/6

07:00-14:24

Nonstop5h 24m

Cancun

Wed 10/6

12:57-16:47

Nonstop5h 50m

$859

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Mon 15/6

23:27-06:48

Nonstop5h 21m

Cancun

Wed 24/6

07:58-17:42

1 stop11h 44m

$859

Flights are sorted by cheapest return flights first.

Deals found on 14/3

Showing 1-10 of 22 resultsSorted by cheapest first
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Best time to book a flight from San Francisco to Cancún

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

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

Use this chart to determine the optimal time to book a return flight from San Francisco to Cancún. Price data was last updated on 13 March 2026.

Booking 51 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Francisco to Cancún. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, July is the cheapest month in which you can book a flight from San Francisco to Cancún (average of $266). Flying from San Francisco to Cancún in December is currently the most expensive (average of $511). 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 CUN?

Find hourly flight availability from San Francisco to Cancún. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 March 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from San Francisco to Cancún as you normally would.

Related info for your journey

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

  • How popular is this San Francisco to Cancún flight route?

    This flight path from San Francisco to Cancun was viewed by 2 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 Cancún?

    For as low as $682, Alaska Airlines can have you in Cancún from San Francisco in 16h 40m. The distance from San Francisco to Cancún is about 3869 km. Both multi-stop and direct flights can be found to your destination and back.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from San Francisco to Cancún on time: United Airlines (58%), American Airlines (56%), Alaska Airlines (56%).

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

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

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

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

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

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

    Currently, July is the cheapest month in which you can book a flight from San Francisco to Cancún (average of $266). Flying from San Francisco to Cancún in December is currently the most expensive (average of $511). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for San Francisco to Cancún

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Cancún flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from San Francisco to Cancún?

Cheapflights makes it easy to find San Francisco to Cancún flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from San Francisco to Cancún?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from San Francisco to Cancún.

Can Cheapflights find flights from San Francisco to Cancún with no change fees?

Yes, we can. To see specific flights from San Francisco to Cancún with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from San Francisco to Cancún become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Cancún from San Francisco today and book when prices fit your budget.

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