Cheap flights from Boston to Toronto from $133 BOS, PSM → YTZ, YYZ
Logan International Airport (BOS), Pease Air Force Base (PSM) → Toronto City Centre Airport (YTZ), Pearson International Airport (YYZ)
The cheapest return found recently is $503 with American Airlines, 19 Nov – 29 Nov, found 3 days ago. The cheapest one-way found recently is $133 with Porter Airlines Canada, 16 May 2027, found today.
- Cheapest one-way found recently
- $133, Porter Airlines Canada, found today
- Cheapest return found recently
- $503, 19 Nov to 29 Nov
- Cheapest month to fly
- November 2026, one-way fares from $121 found in the last 7 days
- Airlines with nonstop flights
- Porter Airlines, Air Canada, United Airlines
- Shortest nonstop flight found
- 1 h 47 min
Return
Not enough comparable prices yet for a usual return price.
Cheapest return found recently
$503
19 Nov – 29 Nov · American Airlines
Logan International Airport (BOS) → Pearson International Airport (YYZ)
Leaves 11:28 a.m. · Return leaves 6:00 a.m. · 8 h 35 min of travel, both ways together
out 1 stop, back 1 stop
found 3 days ago
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$503 19 Nov – 29 Novfound 3 days agoSee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 40 days, 24 Sept to 12 Nov, the cheapest return we saw each day was $193 to $673.
Those were the prices on those days, not today's.
Is this a good return price?
Not enough comparable prices yet: we hold return fares on 1 departure date and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other 10-night return fares leaving within 3 days of 19 Nov to compare.
Every date we hold
2 fares on 1 departure dates
See every date as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 19 Nov – 29 Nov | $503 | American Airlines | Logan International Airport (BOS) → Pearson International Airport (YYZ) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
Airlines on the cheapest dates: American Airlines.
One-way
The cheapest one-way fare on each of 8 departure dates is usually $133 to $140.
Cheapest one-way found recently
$133
16 May 2027 · Porter Airlines Canada
Logan International Airport (BOS) → Toronto City Centre Airport (YTZ)
Leaves 11:15 a.m. · 1 h 47 min trip
nonstop
found today
Cheapest nonstop one-way
$133
16 May 2027 · Porter Airlines Canada
Logan International Airport (BOS) → Toronto City Centre Airport (YTZ)
Leaves 11:15 a.m. · 1 h 47 min trip
nonstop
found today
Found recently, and the cheapest we hold
$133 16 May 2027found todayOpen this trip
$121 18 Novfound 5 days agoOpen this trip
What have prices looked like?
Over 45 days, 24 Sept to 12 Nov, the cheapest one-way we saw each day was $57 to $157.
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 8 departure dates from 18 Nov to 16 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?
No. We hold one-way fares on 1 other departure date within 3 days of 16 May 2027, and it is not cheaper.
Every date we hold
9 fares on 8 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 18 Nov | $121 | Air Canada | Logan International Airport (BOS) → Pearson International Airport (YYZ) | stops unknown | found 5 days ago | Open this trip |
| 25 Nov | $389 | Breeze Airways | Pease Air Force Base (PSM) → Pearson International Airport (YYZ) | 2 stops | found today | Open this trip |
| 21 Dec | $140 | United Airlines | Logan International Airport (BOS) → Pearson International Airport (YYZ) | nonstop | found 4 days ago | Open this trip |
| 29 Dec | $133 | Air Canada | Logan International Airport (BOS) → Pearson International Airport (YYZ) | nonstop | found 4 days ago | Open this trip |
| 30 Dec | $140 | Porter Airlines Canada | Logan International Airport (BOS) → Pearson International Airport (YYZ) | 1 stop | found 4 days ago | Open this trip |
| 31 Dec | $133 | Air Canada | Logan International Airport (BOS) → Pearson International Airport (YYZ) | nonstop | found 4 days ago | Open this trip |
| 13 May 2027 | $136 | Porter Airlines Canada | Logan International Airport (BOS) → Toronto City Centre Airport (YTZ) | nonstop | found today | Open this trip |
| 16 May 2027 | $133 | Porter Airlines Canada | Logan International Airport (BOS) → Toronto City Centre Airport (YTZ) | nonstop | found today | Open this trip |
Which month looks cheapest?
November 2026 is the cheapest month — from $121.
Airlines on the cheapest dates: Air Canada, Porter Airlines Canada, Breeze Airways, United Airlines.
Premium cabin fares from Boston 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 19 Nov – 29 Nov in another cabin: Premium economy · Business · First
Today's prices for 16 May 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Boston to Toronto?
Return
Fares 14 to 29 days before departure were typically 37% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 12 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 |
|---|---|---|---|---|
| 0–6 days | $370 | $243 | +59% | 16 |
| 7–13 days | $436 | $213 | +87% | 27 |
| 14–29 days | $233 | $193 | Cheapest seen | 28 |
| 30–59 days | $274 | $197 | +18% | 15 |
| 60–89 days | $363 | $264 | +56% | 19 |
| 180+ days | $503 | $424 | +116% | 15 |
One-way
Fares 14 to 29 days before departure were typically 9% lower than 0 to 6 days before departure.
From the cheapest one-way each day between 24 Sept and 12 Nov (45 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 | $111 | $57 | +10% | 18 |
| 7–13 days | $128 | $99 | +27% | 21 |
| 14–29 days | $101 | $94 | Cheapest seen | 19 |
| 30–59 days | $125 | $122 | +24% | 14 |
| 90–179 days | $193 | $157 | +91% | 15 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Boston → Buffalo
95 km from Toronto
$326
$177 less than flying to Toronto
16 Nov – 20 Nov · BOS → BUF · out nonstop, back nonstop
found yesterday
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Boston → Buffalo
95 km from Toronto
$90
$43 less than flying to Toronto
15 Nov · BOS → BUF · nonstop
found 3 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 19 Nov – 29 Nov. 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 Boston to Toronto?
The cheapest return found recently is $503 with American Airlines, 19 Nov to 29 Nov, found 3 days ago.
How much is a one-way flight from Boston to Toronto?
The cheapest one-way found recently is $133 with Porter Airlines Canada, 16 May 2027, found today. The cheapest one-way we hold, of any age, is $121 with Air Canada, 18 Nov, found 5 days ago. The cheapest one-way fare on each of 8 departure dates is usually $133 to $140.
What is the cheapest month to fly from Boston to Toronto?
November 2026 is the cheapest month for a one-way, from $121, 18 Nov, found 5 days ago.
How far ahead should I book a flight from Boston to Toronto?
In 40 days of prices between 24 Sept and 12 Nov, return fares 14 to 29 days before departure were typically 37% lower than 0 to 6 days before departure. In 45 days of prices between 24 Sept and 12 Nov, one-way fares 14 to 29 days before departure were typically 9% lower than 0 to 6 days before departure.
Is there a direct flight from Boston to Toronto?
Yes, the cheapest nonstop one-way found recently is $133 with Porter Airlines Canada, 16 May 2027, found today.
How long is the flight from Boston to Toronto?
The cheapest nonstop one-way found recently, with Porter Airlines Canada on 16 May 2027, takes 1 h 47 min from Logan International Airport (BOS) to Toronto City Centre Airport (YTZ).
Which airlines have the cheapest flights from Boston to Toronto?
Between 18 Nov and 16 May 2027, Air Canada has the cheapest one-way on 3 of the 8 departure dates we hold, Porter Airlines Canada on 3 and Breeze Airways 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