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Cheap flights from San Francisco to Cancún from £128

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 17/3. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — CUN
7 Feb — 14 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap 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 8 January 2026.

Round-trip from

£268

One-way from

£128

Popular in

December

Cheapest in

January

Average price

£388

Good round-trip deal

£426 or less
Delta
  • Delta
  • 8/3-17/3
  • 2 total stops
  • 25h 51m total
  • San Francisco to Cancún
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Delta
  • Delta
  • 20/2
  • 2 total stops
  • 11h 10m total
  • San Francisco to Cancún
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (£9 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (£6 potential savings vs. average return price).
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Average for round-trip flights in January 2026
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Price to beat on a round-trip flight from San Francisco to Cancun.
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Find 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 8 January 2026.

Sun 8/323:35SFO - CUN
1 stop18h 27mDelta
Fri 13/316:17CUN - SFO
1 stop19h 33mDelta
Deal found 7/1£268
Sun 3/523:27SFO - CUN
Nonstop5h 21mUnited Airlines
Tue 5/512:57CUN - SFO
Nonstop5h 50mUnited Airlines
Deal found 7/1£269
Wed 18/223:01SFO - CUN
Nonstop5h 12mUnited Airlines
Tue 24/217:55CUN - SFO
1 stop9h 04mUnited Airlines
Deal found 7/1£270
Sat 31/108:25SFO - CUN
Nonstop5h 20mAlaska Airlines
Sun 8/218:15CUN - SFO
1 stop16h 23mAlaska Airlines
Deal found 7/1£271
Fri 13/319:09SFO - CUN
1 stop16h 31mDelta
Mon 16/310:50CUN - SFO
1 stop13h 48mDelta
Deal found 7/1£271
Sun 1/318:43SFO - CUN
1 stop17h 07mAlaska Airlines
Sat 7/317:55CUN - SFO
Nonstop6h 17mAlaska Airlines
Deal found 7/1£272
Sat 7/308:25SFO - CUN
Nonstop5h 20mAlaska Airlines
Mon 16/318:15CUN - SFO
1 stop15h 16mAlaska Airlines
Deal found 7/1£273
Tue 17/312:47SFO - CUN
1 stop24h 12mAlaska Airlines
Wed 25/317:15CUN - SFO
1 stop16h 15mAlaska Airlines
Deal found 7/1£274
Sun 5/418:28SFO - CUN
2 stops15h 47mDelta
Thu 9/412:45CUN - SFO
1 stop13h 11mDelta
Deal found 6/1£275
Sat 21/208:25SFO - CUN
Nonstop5h 20mAlaska Airlines
Fri 27/218:15CUN - SFO
1 stop29h 29mAlaska Airlines
Deal found 6/1£276
Sat 7/308:25SFO - CUN
Nonstop5h 20mAlaska Airlines
Fri 13/318:15CUN - SFO
1 stop17h 18mAlaska Airlines
Deal found 6/1£277
Tue 10/208:59SFO - CUN
Nonstop5h 21mUnited Airlines
Tue 17/217:55CUN - SFO
1 stop9h 04mUnited Airlines
Deal found 6/1£277

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 8 January 2026.
Use the filters below to find and compare flights from San Francisco to Cancún that are best for you.

Fly from

San Francisco

Fly to

Cancún

Route

Depart

Return

Price

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Sun 8/3

23:35-20:02

1 stop18h 27m

Cancun

Sat 14/3

18:00-07:54

1 stop15h 54m

£268

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Thu 5/3

22:45-11:15

1 stop9h 30m

Cancun

Fri 13/3

16:17-09:50

1 stop19h 33m

£271

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Fri 13/3

19:09-13:40

1 stop16h 31m

Cancun

Thu 19/3

06:01-17:28

2 stops13h 27m

£271

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Wed 11/3

06:00-17:00

1 stop9h 00m

Cancun

Fri 13/3

16:17-09:50

1 stop19h 33m

£271

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Thu 5/3

22:45-11:15

1 stop9h 30m

Cancun

Mon 9/3

11:05-20:00

2 stops10h 55m

£275

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Tue 5/5

20:50-11:05

2 stops12h 15m

Cancun

Tue 12/5

10:55-19:35

1 stop10h 40m

£275

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Wed 18/2

23:01-07:13

Nonstop5h 12m

Cancun

Wed 25/2

17:50-20:53

Nonstop6h 03m

£278

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Fri 17/4

23:27-06:48

Nonstop5h 21m

Cancun

Wed 22/4

12:57-16:47

Nonstop5h 50m

£288

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Mon 13/4

23:19-12:31

1 stop11h 12m

Cancun

Tue 21/4

08:35-20:58

1 stop14h 23m

£289

San FranciscoCancún

SFO - CUN

SFOCUN

San Francisco

Tue 17/3

18:28-09:50

2 stops13h 22m

£128

Flights are sorted by cheapest return flights first.

Deals found on 6/1

Showing 1-10 of 18 results
1
2

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 2 January 2026.

Booking 49 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 £141). Flying from San Francisco to Cancún in December is currently the most expensive (average of £267). 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 8 January 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.

Reviews of airlines servicing Cancún

Get insights into the airlines that provide service to Cancún. 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 Cancún. Reviews last updated 8 January 2026.
See what other customers who have flown with United Airlines from San Francisco to Cancún have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,139 reviews
Check prices

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
9,139 reviews
United Airlines
7.4
Good
9,139 reviews
Check prices

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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.

  • What airports do I use to fly from San Francisco to Cancún?

    If you book a flight from San Francisco to Cancún, you will be flying from San Francisco to Cancun. Flights to Cancun (CUN) from San Francisco (SFO) take 5h 12m for a nonstop flight. There are 2 flights from San Francisco to Cancún per day from 1 airline.

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

    Within the past month, 6 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 16h 02m. Fly via Delta or Alaska Airlines 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 is the cheapest airline to fly from San Francisco to Cancún round-trip?

    Flying on United Airlines is currently your cheapest option to Cancún, with prices starting at £418. United Airlines is currently priced 10% below the average price you’ll pay for this route.

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

    Consider American Airlines (67%), Alaska Airlines (67%) or Hawaiian Airlines (65%) 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 £478 for a flight from San Francisco to Cancún. The cheapest flight overall is £426 while the most popular route, (San Francisco - Cancun) is currently priced at £237.

  • 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 £141). Flying from San Francisco to Cancún in December is currently the most expensive (average of £267). 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
Holbox

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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

Top airline flying from San Francisco to Cancún

Discover the top airline that operate flights from San Francisco to Cancún. 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 858,174 searches. Data last updated 8 January 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest£418Average£478FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

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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