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Cheap flights from San Francisco to Cancún from £159

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 16/8. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — CUN
6 May — 13 May1
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 6 April 2026.

Sun 2/807:04
SFO
-
CUN
1 stop11h 41m
Delta
Sun 9/816:20
CUN
-
SFO
1 stop9h 32m
Delta
Deal found 3/4£349
Wed 6/506:00
SFO
-
CUN
1 stop8h 51m
Delta
Mon 11/518:05
CUN
-
SFO
1 stop16h 16m
Delta
Deal found 5/4£353
Sun 12/406:00
SFO
-
CUN
1 stop9h 00m
Delta
Sat 18/406:01
CUN
-
SFO
2 stops12h 50m
Delta
Deal found 2/4£354
Wed 8/719:24
SFO
-
CUN
2 stops14h 11m
Delta
Tue 14/714:33
CUN
-
SFO
2 stops11h 12m
Delta
Deal found 6/4£356
Sat 5/918:50
SFO
-
CUN
2 stops14h 45m
Delta
Sat 12/912:09
CUN
-
SFO
2 stops13h 37m
Delta
Deal found 6/4£357
Fri 17/421:35
SFO
-
CUN
1 stop14h 26m
Delta
Wed 22/406:01
CUN
-
SFO
1 stop8h 59m
Delta
Deal found 5/4£361
Fri 10/421:35
SFO
-
CUN
2 stops12h 12m
Delta
Fri 17/412:25
CUN
-
SFO
1 stop12h 00m
Delta
Deal found 4/4£364
Wed 3/623:27
SFO
-
CUN
Nonstop5h 21m
United Airlines
Sun 7/617:01
CUN
-
SFO
Nonstop5h 48m
United Airlines
Deal found 3/4£365
Sat 8/809:20
SFO
-
CUN
2 stops13h 02m
Delta
Sat 15/813:14
CUN
-
SFO
1 stop12h 15m
Delta
Deal found 6/4£367
Wed 3/605:40
SFO
-
CUN
2 stops11h 55m
Delta
Wed 1/716:27
CUN
-
SFO
1 stop9h 02m
Delta
Deal found 2/4£368
Wed 20/506:00
SFO
-
CUN
1 stop28h 04m
Frontier
Wed 27/515:39
CUN
-
SFO
1 stop10h 44m
Frontier
Deal found 4/4£371

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 6 April 2026.

Round-trip from

£349

One-way from

£159

Popular in

December

Cheapest in

January

Average price

£494

Good round-trip deal

£434 or less
Delta
  • Delta
  • 3/8-9/8
  • 2 total stops
  • 25h 43m total
  • San Francisco to Cancún
Search Deals
Delta
  • Delta
  • 28/7
  • 1 total stop
  • 9h 59m total
  • San Francisco to Cancún
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£13 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from San Francisco to Cancun.
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 858,174 searches. Data last updated 6 April 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

Sun 3/5

21:00-11:45

2 stops12h 45m

Cancun

Sat 9/5

08:08-21:19

2 stops15h 11m

£357
Fastest return journey

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Sun 26/4

23:27-06:48

Nonstop5h 21m

Cancun

Tue 5/5

17:01-20:49

Nonstop5h 48m

£365

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Wed 27/5

08:46-16:12

Nonstop5h 26m

Cancun

Sun 31/5

12:57-16:47

Nonstop5h 50m

£404

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Fri 3/7

15:50-08:55

1 stop15h 05m

Cancun

Fri 10/7

14:05-23:52

2 stops11h 47m

£416

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Sun 7/6

05:00-16:45

1 stop9h 45m

Cancun

Wed 10/6

17:01-20:49

Nonstop5h 48m

£454

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Sat 23/5

23:59-19:19

1 stop17h 20m

Cancun

Wed 27/5

17:01-20:49

Nonstop5h 48m

£459

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Wed 3/6

05:00-16:45

1 stop9h 45m

Cancun

Mon 8/6

12:57-16:47

Nonstop5h 50m

£459

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Thu 23/4

08:46-16:12

Nonstop5h 26m

Cancun

Wed 29/4

12:57-16:47

Nonstop5h 50m

£460

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Sun 3/5

23:27-06:48

Nonstop5h 21m

Cancun

Sun 10/5

15:43-07:10

1 stop17h 27m

£463
Cheapest one-way

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Sun 16/8

07:04-19:03

1 stop9h 59m

£159

Flights are sorted by cheapest return flights first.

Deals found on 2/4

Showing 1-10 of 19 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 3 April 2026.

Booking 36 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, November is the cheapest month in which you can book a flight from San Francisco to Cancún (average of £142). Flying from San Francisco to Cancún in December is currently the most expensive (average of £271). 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 6 April 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.

How much does it cost for a return flight from San Francisco to Cancún?

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?

    Within the past month, 4 users have taken a look at flights from San Francisco to Cancun.

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

    There are many flights that can get you from San Francisco to Cancún in 9h 17m. Fly via United Airlines or Delta to get the fastest option. San Francisco and Cancún are separated by a distance of 2404 mi. 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?

    Consider United Airlines (56%), American Airlines (43%) or Alaska Airlines (43%) when booking your flight. These represent the most reliable airlines when flying from San Francisco to Cancún.

  • What are the cheapest flights from San Francisco to Cancún?

    On average you can expect to pay £487 for a flight from San Francisco to Cancún. The cheapest flight overall is £434 while the most popular route, (San Francisco - Cancun) is currently priced at £372.

  • 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, November is the cheapest month in which you can book a flight from San Francisco to Cancún (average of £142). Flying from San Francisco to Cancún in December is currently the most expensive (average of £271). 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

Travelling to a place near Cancún?

Book flights to Cancún if you plan to visit one of these locations
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Alternative routes for San Francisco to Cancún

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Fly with Cheapflights

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

When you search for this flight from San Francisco to Cancún, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Millions of users choose and trust Cheapflights to book the best flight deals from San Francisco to Cancún for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from San Francisco to Cancún flexibly with Cheapflights today.

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

Not ready to book yet? You can track prices for flights from San Francisco to Cancún on Cheapflights with our Price Alert feature and get notified when better prices are available.

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