Cheap flights from Ontario to Toronto from $155 ONT → YYZ
Ontario International Airport (ONT) → Pearson International Airport (YYZ)
The cheapest return found recently is $660 with United Airlines, 20 Dec – 25 Dec, found 2 days ago. The cheapest one-way found recently is $155 with Porter Airlines Canada, 5 Dec, found 3 days ago.
- Cheapest one-way found recently
- $155, found 3 days ago
- Cheapest return found recently
- $660, 20 Dec to 25 Dec
- Usual return price
- $612 to $673
- Cheapest month to fly
- November 2026, return fares from $449 found in the last 7 days
Return
The cheapest return fare on each of 5 departure dates is usually $612 to $673.
Cheapest return found recently
$660
20 Dec – 25 Dec · United Airlines
Ontario International Airport (ONT) → Pearson International Airport (YYZ)
Leaves 11:52 p.m. · Return leaves 1:20 p.m. · 15 h 44 min of travel, both ways together
out 1 stop, back 1 stop
found 2 days ago
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$660 20 Dec – 25 Decfound 2 days agoSee prices for these dates
$449 25 Nov – 1 Decfound 3 days agoSee prices for these dates
What have prices looked like?
Over 40 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $399 to $803.
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 5 departure dates from 25 Nov to 11 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?
We hold no other 5-night return fares leaving within 3 days of 20 Dec to compare.
Every date we hold
27 fares on 5 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 25 Nov – 1 Dec | $449 | Frontier Airlines | Ontario International Airport (ONT) → Pearson International Airport (YYZ) | out 2 stops, back 2 stops | found 3 days ago | See prices for these dates |
| 20 Dec – 25 Dec | $660 | United Airlines | Ontario International Airport (ONT) → Pearson International Airport (YYZ) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 26 Dec – 1 Jan 2027 | $673 | United Airlines | Ontario International Airport (ONT) → Pearson International Airport (YYZ) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 9 Jan 2027 – 13 Jan 2027 | $715 | United Airlines | Ontario International Airport (ONT) → Pearson International Airport (YYZ) | out 1 stop, back nonstop | found 7 days ago | See prices for these dates |
| 11 Jan 2027 – 15 Jan 2027 | $612 | American Airlines | Ontario International Airport (ONT) → Pearson International Airport (YYZ) | out 1 stop, back 1 stop | found 8 days ago | See prices for these dates |
Which month looks cheapest?
November 2026 is the cheapest month — from $449.
Airlines on the cheapest dates: United Airlines, Frontier Airlines, American Airlines.
One-way
The cheapest one-way fare on each of 4 departure dates is usually $289 to $352.
Cheapest one-way found recently
$155
5 Dec · Porter Airlines Canada
Ontario International Airport (ONT) → Pearson International Airport (YYZ)
Leaves 11:00 a.m. · 9 h 47 min trip
stops unknown
found 3 days ago
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$155 5 Decfound 3 days agoOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 33 days, 3 Oct to 11 Nov, the cheapest one-way we saw each day was $155 to $397.
At $155, the cheapest one-way found recently is at the low end of that range.
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 4 departure dates from 5 Dec to 26 May 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 one-way fares leaving within 3 days of 5 Dec to compare.
Every date we hold
4 fares on 4 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 5 Dec | $155 | Porter Airlines Canada | Ontario International Airport (ONT) → Pearson International Airport (YYZ) | stops unknown | found 3 days ago | Open this trip |
| 3 Feb 2027 | $334 | United Airlines | Ontario International Airport (ONT) → Pearson International Airport (YYZ) | 1 stop | found 4 days ago | Open this trip |
| 4 Feb 2027 | $337 | United Airlines | Ontario International Airport (ONT) → Pearson International Airport (YYZ) | 1 stop | found 4 days ago | Open this trip |
| 26 May 2027 | $397 | American Airlines | Ontario International Airport (ONT) → Pearson International Airport (YYZ) | 1 stop | found 6 days ago | Open this trip |
Which month looks cheapest?
December 2026 is the cheapest month — from $155.
Airlines on the cheapest dates: United Airlines, Porter Airlines Canada, American Airlines.
Premium cabin fares from Ontario to Toronto
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 20 Dec – 25 Dec in another cabin: Premium economy · Business · First
Today's prices for 5 Dec in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Ontario to Toronto?
Return
The cheapest fares were 30 to 59 days before departure.
From the cheapest return each day between 24 Sept and 11 Nov (40 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 |
|---|---|---|---|---|
| 14–29 days | $528 | $449 | +2% | 11 |
| 30–59 days | $518 | $399 | Cheapest seen | 16 |
| 60–89 days | $606 | $561 | +17% | 31 |
| 90–179 days | $629 | $562 | +21% | 9 |
| 180+ days | $633 | $614 | +22% | 16 |
One-way
Not enough history yet: in 33 days of one-way prices, 3 Oct to 11 Nov, 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
Los Angeles → Toronto
56 km from Ontario
$312
$348 less than flying from Ontario
9 Jan 2027 – 13 Jan 2027 · LAX → YYZ · out 1 stop, back 1 stop
found 2 days ago
Ontario → Buffalo
95 km from Toronto
$542
$118 less than flying to Toronto
1 Jan 2027 – 4 Jan 2027 · ONT → BUF · out 1 stop, back 1 stop
found 5 days ago
Long Beach → Toronto
60 km from Ontario
$859
$199 more than flying from Ontario
26 Dec – 1 Jan 2027 · LGB → YYZ · out 1 stop, back 1 stop
found 5 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Los Angeles → Toronto
56 km from Ontario
$137
$18 less than flying from Ontario
9 Jan 2027 · LAX → YYZ · 2 stops
found 2 days ago
Long Beach → Toronto
60 km from Ontario
$312
$157 more than flying from Ontario
4 Feb 2027 · LGB → YYZ · 1 stop
found 4 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 20 Dec – 25 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 Toronto?
The cheapest return found recently is $660 with United Airlines, 20 Dec to 25 Dec, found 2 days ago. The cheapest return we hold, of any age, is $449 with Frontier Airlines, 25 Nov to 1 Dec, found 3 days ago. The cheapest return fare on each of 5 departure dates is usually $612 to $673.
How much is a one-way flight from Ontario to Toronto?
The cheapest one-way found recently is $155 with Porter Airlines Canada, 5 Dec, found 3 days ago. The cheapest one-way fare on each of 4 departure dates is usually $289 to $352.
What is the cheapest month to fly from Ontario to Toronto?
November 2026 is the cheapest month for a return, from $449, 25 Nov to 1 Dec, found 3 days ago. December 2026 is the cheapest month for a one-way, from $155, 5 Dec, found 3 days ago.
How far ahead should I book a flight from Ontario to Toronto?
In 40 days of prices between 24 Sept and 11 Nov, return fares were cheapest 30 to 59 days before departure.
Which airlines have the cheapest flights from Ontario to Toronto?
Between 25 Nov and 11 Jan 2027, United Airlines has the cheapest return on 3 of the 5 departure dates we hold, Frontier Airlines on 1 and American Airlines on 1. Between 5 Dec and 26 May 2027, United Airlines has the cheapest one-way on 2 of the 4 departure dates we hold, Porter Airlines Canada on 1 and American Airlines on 1.
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