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San Francisco to Cancun SFO → CUN

San Francisco International Airport (SFO) → Cancun International Airport (CUN)

The cheapest return found recently is $357 with American Airlines, 1 Dec – 5 Dec, found yesterday. The cheapest one-way found recently is $166 with Aeromexico, 8 Jan 2027, found yesterday.

Return

The cheapest return fare on each of 12 departure dates is usually $392 to $496.

Cheapest return found recently

$357

1 Dec – 5 Dec · American Airlines

San Francisco International Airport (SFO) → Cancun International Airport (CUN)

Leaves 7:49 a.m. · Return leaves 1:37 p.m. · 24 h 1 min of travel, both ways together

out 1 stop, back 1 stop

found yesterday

See prices for these datesCheck today's price

Cheapest nonstop return

None seen yet.

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Found recently, and the cheapest we hold

Cheapest found recently $357 1 Dec – 5 Decfound yesterdaySee prices for these dates

It is also the cheapest return we hold, of any age.

What have prices looked like?

Over 25 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $290 to $509.

$357, the cheapest return found recently, sits here in that range of $290 to $509.

25 days is a short history, so treat this range as an early guide.

Those were the prices on those days, not today's.

Is this a good return price?

Compared with the cheapest return fare on each of 12 departure dates from 28 Oct to 10 Jan 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.

Could nearby dates be cheaper?

No. We hold 4-night return fares on 1 other departure date within 3 days of 1 Dec, and it is not cheaper.

Every date we hold

31 fares on 12 departure dates

28 Oct – 29 Nov: $630, found 6 days ago30 Nov – 5 Dec: $390, found yesterday1 Dec – 5 Dec: $357, found yesterday2 Dec – 9 Dec: $449, found yesterday3 Dec – 8 Dec: $440, found yesterday4 Dec – 9 Dec: $440, found yesterday6 Dec – 8 Dec: $414, found yesterday8 Dec – 9 Dec: $393, found yesterday24 Dec – 12 Jan 2027: $559, found 2 days ago25 Dec – 9 Jan 2027: $536, found 4 days ago4 Jan 2027 – 9 Jan 2027: $388, found 5 days ago10 Jan 2027 – 17 Jan 2027: $483, found 5 days agoOctNovDecJan
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
28 Oct – 29 Nov$630Frontier AirlinesSan Francisco International Airport (SFO) → Cancun International Airport (CUN)out 1 stop, back nonstopfound 6 days agoSee prices for these dates
30 Nov – 5 Dec$390Southwest AirlinesSan Francisco International Airport (SFO) → Cancun International Airport (CUN)out 1 stop, back 1 stopfound yesterdaySee prices for these dates
1 Dec – 5 Dec$357American AirlinesSan Francisco International Airport (SFO) → Cancun International Airport (CUN)out 1 stop, back 1 stopfound yesterdaySee prices for these dates
2 Dec – 9 Dec$449Air CanadaSan Francisco International Airport (SFO) → Cancun International Airport (CUN)out 1 stop, back 1 stopfound yesterdaySee prices for these dates
3 Dec – 8 Dec$440United AirlinesSan Francisco International Airport (SFO) → Cancun International Airport (CUN)out 1 stop, back 1 stopfound yesterdaySee prices for these dates
4 Dec – 9 Dec$440United AirlinesSan Francisco International Airport (SFO) → Cancun International Airport (CUN)out 1 stop, back 1 stopfound yesterdaySee prices for these dates
6 Dec – 8 Dec$414American AirlinesSan Francisco International Airport (SFO) → Cancun International Airport (CUN)out 1 stop, back 1 stopfound yesterdaySee prices for these dates
8 Dec – 9 Dec$393Southwest AirlinesSan Francisco International Airport (SFO) → Cancun International Airport (CUN)out 1 stop, back 1 stopfound yesterdaySee prices for these dates
24 Dec – 12 Jan 2027$559Frontier AirlinesSan Francisco International Airport (SFO) → Cancun International Airport (CUN)out 2 stops, back 2 stopsfound 2 days agoSee prices for these dates
25 Dec – 9 Jan 2027$536American AirlinesSan Francisco International Airport (SFO) → Cancun International Airport (CUN)out 1 stop, back 1 stopfound 4 days agoSee prices for these dates
4 Jan 2027 – 9 Jan 2027$388American AirlinesSan Francisco International Airport (SFO) → Cancun International Airport (CUN)out 1 stop, back 1 stopfound 5 days agoSee prices for these dates
10 Jan 2027 – 17 Jan 2027$483American AirlinesSan Francisco International Airport (SFO) → Cancun International Airport (CUN)out 1 stop, back 1 stopfound 5 days agoSee prices for these dates

Which month looks cheapest?

December 2026 is the cheapest month — from $357.

October 2026From $6301 departure date28 Oct – 29 Nov · found 6 days agoSee prices for these dates
November 2026From $3901 departure date30 Nov – 5 Dec · found yesterdaySee prices for these dates
December 2026From $357Cheapest seen8 departure dates1 Dec – 5 Dec · found yesterdaySee prices for these datesEvery date in December 2026
January 2027From $3882 departure dates4 Jan 2027 – 9 Jan 2027 · found 5 days agoSee prices for these dates

Airlines on the cheapest dates: American Airlines, Frontier Airlines, Southwest Airlines, United Airlines, Air Canada.

One-way

The cheapest one-way fare on each of 7 departure dates is usually $166 to $226.

Cheapest one-way found recently

$166

8 Jan 2027 · Aeromexico

San Francisco International Airport (SFO) → Cancun International Airport (CUN)

Leaves 6:31 a.m. · 13 h 2 min trip

1 stop

found yesterday

Open this tripCheck today's price

Cheapest nonstop one-way

None seen yet.

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Found recently, and the cheapest we hold

Cheapest found recently $166 8 Jan 2027found yesterdayOpen this trip

Cheapest we hold, of any age $164 15 Novfound 6 days agoOpen this trip

What have prices looked like?

Over 21 days, 24 Sept to 18 Oct, the cheapest one-way we saw each day was $153 to $352.

$166, the cheapest one-way found recently, sits here in that range of $153 to $352.

21 days is a short history, so treat this range as an early guide.

Those were the prices on those days, not today's.

Is this a good one-way price?

Compared with the cheapest one-way fare on each of 7 departure dates from 15 Nov to 10 Jan 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.

Could nearby dates be cheaper?

No. We hold one-way fares on 1 other departure date within 3 days of 8 Jan 2027, and it is not cheaper.

Every date we hold

7 fares on 7 departure dates

15 Nov: $164, found 6 days ago3 Dec: $251, found yesterday4 Dec: $227, found yesterday5 Dec: $204, found yesterday6 Dec: $225, found yesterday8 Jan 2027: $166, found yesterday10 Jan 2027: $166, found yesterdayNovDecJan
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
15 Nov$164United AirlinesSan Francisco International Airport (SFO) → Cancun International Airport (CUN)stops unknownfound 6 days agoOpen this trip
3 Dec$251United AirlinesSan Francisco International Airport (SFO) → Cancun International Airport (CUN)1 stopfound yesterdayOpen this trip
4 Dec$227American AirlinesSan Francisco International Airport (SFO) → Cancun International Airport (CUN)1 stopfound yesterdayOpen this trip
5 Dec$204Southwest AirlinesSan Francisco International Airport (SFO) → Cancun International Airport (CUN)1 stopfound yesterdayOpen this trip
6 Dec$225American AirlinesSan Francisco International Airport (SFO) → Cancun International Airport (CUN)1 stopfound yesterdayOpen this trip
8 Jan 2027$166AeromexicoSan Francisco International Airport (SFO) → Cancun International Airport (CUN)1 stopfound yesterdayOpen this trip
10 Jan 2027$166AeromexicoSan Francisco International Airport (SFO) → Cancun International Airport (CUN)1 stopfound yesterdayOpen this trip

Which month looks cheapest?

November 2026 is the cheapest month — from $164.

November 2026From $164Cheapest seen1 departure date15 Nov · found 6 days agoOpen this trip
December 2026From $2044 departure dates5 Dec · found yesterdayOpen this tripEvery date in December 2026
January 2027From $1662 departure dates8 Jan 2027 · found yesterdayOpen this trip

Airlines on the cheapest dates: United Airlines, American Airlines, Aeromexico, Southwest Airlines.

Premium cabin fares from San Francisco to Cancun

We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.

Today's prices for 1 Dec – 5 Dec in another cabin: Premium economy · Business · First

Today's prices for 8 Jan 2027 in another cabin: Premium economy · Business · First

How far ahead were prices cheapest for San Francisco to Cancun?

Return

Fares 90 to 179 days before departure were typically 24% lower than 14 to 29 days before departure.

From the cheapest return each day between 24 Sept and 18 Oct (25 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

See these ranges as a table
Typical price in each booking range — round trip, per traveler in Economy.
Booked ahead byTypical fareCheapest dayAbove the cheapestDays of prices
14–29 days$458$362+31%10
30–59 days$397$317+14%25
60–89 days$388$290+11%24
90–179 days$350$337Cheapest seen14
180+ days$505$477+45%17

One-way

Not enough history yet: in 21 days of one-way prices, 24 Sept to 18 Oct, fewer than 3 booking ranges had prices on 7 days or more.

Could a nearby airport be cheaper?

A different airport at either end can change the fare — sometimes a lot.

Return

San Jose → Cancun

67 km from San Francisco

$441

$84 more than flying from San Francisco

3 Dec – 8 Dec · SJC → CUN · out 3 stops, back 1 stop

found yesterday

See this route

Oakland → Cancun

13 km from San Francisco

$477

$120 more than flying from San Francisco

3 Dec – 8 Dec · OAK → CUN · out 2 stops, back 1 stop

found yesterday

See this route

Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.

One-way

San Jose → Cancun

67 km from San Francisco

$242

$76 more than flying from San Francisco

4 Dec · SJC → CUN · 2 stops

found yesterday

See this route

Oakland → Cancun

13 km from San Francisco

$282

$116 more than flying from San Francisco

10 Jan 2027 · OAK → CUN · 1 stop

found yesterday

See this route

Sacramento → Cancun

121 km from San Francisco

$322

$156 more than flying from San Francisco

31 Oct · SMF → CUN · 3 stops

found 2 days ago

Check today's price

San Francisco → Cozumel

82 km from Cancun

$2,121

$1,955 more than flying to Cancun

16 Sept 2027 · SFO → CZM · 1 stop

found 5 days ago

Check today's price

Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.

Live price for these dates

The cheapest return found recently is for 1 Dec – 5 Dec. A live search on this page shows what those dates cost now, for one adult in economy.

Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work