Cheap flights from Boston to Toronto from $136 BOS → YTZ, YYZ

Found recently, and the cheapest we hold

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

What have prices looked like?

Over 39 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $193 to $673.

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

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

4 fares on 2 departure dates

Found recently, and the cheapest we hold

What have prices looked like?

Over 44 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $57 to $157.

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

Could nearby dates be cheaper?

Yes. Among one-way fares leaving within 3 days of 31 Dec, 29 Dec costs $133: $3 less than the cheapest found recently.

Air Canada · Logan International Airport (BOS) → Pearson International Airport (YYZ) · nonstop · found 4 days ago

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Every date we hold

5 fares on 4 departure dates

Which month looks cheapest?

November 2026 is the cheapest month — from $121.

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 11 Nov (39 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.

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 11 Nov (44 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.

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 $136 with Porter Airlines Canada, 31 Dec, found 3 days ago. 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 4 departure dates is usually $130 to $135.

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 39 days of prices between 24 Sept and 11 Nov, return fares 14 to 29 days before departure were typically 37% lower than 0 to 6 days before departure. In 44 days of prices between 24 Sept and 11 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 $136 with Porter Airlines Canada, 31 Dec, found 3 days ago.

How long is the flight from Boston to Toronto?

The cheapest nonstop one-way found recently, with Porter Airlines Canada on 31 Dec, takes 2 h 10 min from Logan International Airport (BOS) to Pearson International Airport (YYZ).

Which airlines have the cheapest flights from Boston to Toronto?

Between 18 Nov and 31 Dec, Air Canada has the cheapest one-way on 3 of the 4 departure dates we hold, and Porter Airlines Canada on 1.