Cheap flights from Ontario to Cancun from $334 ONT → CUN
Ontario International Airport (ONT) → Cancun International Airport (CUN)
The cheapest return found recently is $468 with Frontier Airlines, 23 Dec – 30 Dec, found 2 days ago. The cheapest one-way found recently is $334 with Volaris, 29 Nov, found 7 days ago.
- Cheapest one-way found recently
- $334, found 7 days ago
- Cheapest return found recently
- $468, 23 Dec to 30 Dec
- Usual return price
- $531 to $845
- Cheapest month to fly
- December 2026, return fares from $468 found in the last 7 days
Return
The cheapest return fare on each of 9 departure dates is usually $531 to $845.
Cheapest return found recently
$468
23 Dec – 30 Dec · Frontier Airlines
Ontario International Airport (ONT) → Cancun International Airport (CUN)
Leaves 10:48 p.m. · Return leaves 5:25 p.m. · 30 h 34 min of travel, both ways together
out 2 stops, back 1 stop
found 2 days ago
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$468 23 Dec – 30 Decfound 2 days agoSee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 49 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $345 to $531.
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 9 departure dates from 19 Nov to 11 Aug 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?
We hold no other 7-night return fares leaving within 3 days of 23 Dec to compare.
Every date we hold
54 fares on 9 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 19 Nov – 29 Nov | $921 | Volaris | Ontario International Airport (ONT) → Cancun International Airport (CUN) | out 1 stop, back 1 stop | found 7 days ago | See prices for these dates |
| 20 Nov – 29 Nov | $845 | Frontier Airlines | Ontario International Airport (ONT) → Cancun International Airport (CUN) | out 1 stop, back 1 stop | found 7 days ago | See prices for these dates |
| 22 Dec – 30 Dec | $617 | Southwest Airlines | Ontario International Airport (ONT) → Cancun International Airport (CUN) | out 2 stops, back 1 stop | found 3 days ago | See prices for these dates |
| 23 Dec – 30 Dec | $468 | Frontier Airlines | Ontario International Airport (ONT) → Cancun International Airport (CUN) | out 2 stops, back 1 stop | found 2 days ago | See prices for these dates |
| 26 Dec – 4 Jan 2027 | $864 | Southwest Airlines | Ontario International Airport (ONT) → Cancun International Airport (CUN) | out 2 stops, back 1 stop | found 5 days ago | See prices for these dates |
| 5 Jan 2027 – 13 Jan 2027 | $727 | United Airlines | Ontario International Airport (ONT) → Cancun International Airport (CUN) | out 1 stop, back nonstop | found 7 days ago | See prices for these dates |
| 7 Jan 2027 – 10 Jan 2027 | $690 | Volaris | Ontario International Airport (ONT) → Cancun International Airport (CUN) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 15 Mar 2027 – 18 Mar 2027 | $486 | Volaris | Ontario International Airport (ONT) → Cancun International Airport (CUN) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
| 11 Aug 2027 – 21 Aug 2027 | $531 | Volaris | Ontario International Airport (ONT) → Cancun International Airport (CUN) | out 1 stop, back 1 stop | found 8 days ago | See prices for these dates |
Which month looks cheapest?
December 2026 is the cheapest month — from $468.
Airlines on the cheapest dates: Volaris, Frontier Airlines, Southwest Airlines, United Airlines.
One-way
Not enough comparable prices yet for a usual one-way price.
Cheapest one-way found recently
$334
29 Nov · Volaris
Ontario International Airport (ONT) → Cancun International Airport (CUN)
Leaves 12:05 a.m. · 12 h 26 min trip
1 stop
found 7 days ago
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$334 29 Novfound 7 days agoOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 42 days, 26 Sept to 10 Nov, the cheapest one-way we saw each day was $192 to $582.
Those were the prices on those days, not today's.
Is this a good one-way price?
Not enough comparable prices yet: we hold one-way fares on 1 departure date and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 29 Nov to compare.
Every date we hold
1 fares on 1 departure dates
See every date as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 29 Nov | $334 | Volaris | Ontario International Airport (ONT) → Cancun International Airport (CUN) | 1 stop | found 7 days ago | Open this trip |
Airlines on the cheapest dates: Volaris.
Premium cabin fares from Ontario 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 23 Dec – 30 Dec in another cabin: Premium economy · Business · First
Today's prices for 29 Nov in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Ontario to Cancun?
Return
Fares 90 to 179 days before departure were typically 29% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 11 Nov (49 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
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $614 | $469 | +41% | 22 |
| 7–13 days | $470 | $445 | +8% | 26 |
| 14–29 days | $585 | $362 | +34% | 28 |
| 30–59 days | $531 | $362 | +22% | 49 |
| 60–89 days | $529 | $381 | +21% | 45 |
| 90–179 days | $436 | $345 | Cheapest seen | 42 |
| 180+ days | $468 | $360 | +7% | 27 |
One-way
Fares 90 to 179 days before departure were typically 36% lower than 60 to 89 days before departure.
From the cheapest one-way each day between 26 Sept and 10 Nov (42 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
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 60–89 days | $331 | $257 | +57% | 13 |
| 90–179 days | $211 | $192 | Cheapest seen | 30 |
| 180+ days | $266 | $266 | +26% | 8 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Los Angeles → Cancun
56 km from Ontario
$399
$69 less than flying from Ontario
15 Mar 2027 – 18 Mar 2027 · LAX → CUN · out 1 stop, back 1 stop
found 3 days ago
Long Beach → Cancun
60 km from Ontario
$652
$184 more than flying from Ontario
23 Dec – 30 Dec · LGB → CUN · out 1 stop, back 1 stop
found 2 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Los Angeles → Cancun
56 km from Ontario
$576
$242 more than flying from Ontario
11 Oct 2027 · SNA → CUN · 1 stop
found 2 days ago
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 23 Dec – 30 Dec. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from Ontario to Cancun?
The cheapest return found recently is $468 with Frontier Airlines, 23 Dec to 30 Dec, found 2 days ago. The cheapest return fare on each of 9 departure dates is usually $531 to $845.
How much is a one-way flight from Ontario to Cancun?
The cheapest one-way found recently is $334 with Volaris, 29 Nov, found 7 days ago.
What is the cheapest month to fly from Ontario to Cancun?
December 2026 is the cheapest month for a return, from $468, 23 Dec to 30 Dec, found 2 days ago.
How far ahead should I book a flight from Ontario to Cancun?
In 49 days of prices between 24 Sept and 11 Nov, return fares 90 to 179 days before departure were typically 29% lower than 0 to 6 days before departure. In 42 days of prices between 26 Sept and 10 Nov, one-way fares 90 to 179 days before departure were typically 36% lower than 60 to 89 days before departure.
How long is the flight from Ontario to Cancun?
The cheapest one-way found recently, with Volaris on 29 Nov, takes 12 h 26 min with 1 stop.
Which airlines have the cheapest flights from Ontario to Cancun?
Between 19 Nov and 11 Aug 2027, Volaris has the cheapest return on 4 of the 9 departure dates we hold, Frontier Airlines on 2 and Southwest Airlines on 2.
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