Cheap flights from Ontario to Bangkok from $440 ONT → BKK

Found recently, and the cheapest we hold

What have prices looked like?

Over 50 days, 24 Sept to 12 Nov, the cheapest return we saw each day was $643 to $827.

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

Could nearby dates be cheaper?

No. We hold 15-night return fares on 1 other departure date within 3 days of 24 Feb 2027, and it is not cheaper.

Every date we hold

102 fares on 33 departure dates

Which month looks cheapest?

February 2027 is the cheapest month — from $754.

Found recently, and the cheapest we hold

What have prices looked like?

Over 46 days, 24 Sept to 12 Nov, the cheapest one-way we saw each day was $360 to $547.

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

Could nearby dates be cheaper?

We hold no other one-way fares leaving within 3 days of 6 Feb 2027 to compare.

Every date we hold

10 fares on 8 departure dates

Which month looks cheapest?

February 2027 is the cheapest month — from $383.

Return

Fares 90 to 179 days before departure were typically 15% lower than 0 to 6 days before departure.

From the cheapest return each day between 24 Sept and 12 Nov (50 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

The cheapest fares were 90 to 179 days before departure.

From the cheapest one-way each day between 24 Sept and 12 Nov (46 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 Ontario to Bangkok?

The cheapest return found recently is $807 with Korean Air, 24 Feb 2027 to 11 Mar 2027, found 11 hours ago. The cheapest return we hold, of any age, is $754 with Korean Air, 10 Feb 2027 to 21 Feb 2027, found 4 days ago. The cheapest return fare on each of 33 departure dates is usually $817 to $1,345.

How much is a one-way flight from Ontario to Bangkok?

The cheapest one-way found recently is $440 with Korean Air, 6 Feb 2027, found 2 days ago. The cheapest one-way we hold, of any age, is $383 with Korean Air, 10 Feb 2027, found 4 days ago. The cheapest one-way fare on each of 8 departure dates is usually $414 to $493.

What is the cheapest month to fly from Ontario to Bangkok?

February 2027 is the cheapest month for a return, from $754, 10 Feb 2027 to 21 Feb 2027, found 4 days ago. It is the cheapest month for a one-way too, from $383, 10 Feb 2027, found 4 days ago.

Every date in February 2027

How far ahead should I book a flight from Ontario to Bangkok?

In 50 days of prices between 24 Sept and 12 Nov, return fares 90 to 179 days before departure were typically 15% lower than 0 to 6 days before departure. In 46 days of prices between 24 Sept and 12 Nov, one-way fares were cheapest 90 to 179 days before departure.

How long is the flight from Ontario to Bangkok?

The cheapest one-way found recently, with Korean Air on 6 Feb 2027, takes 25 h 5 min with 2 stops.

Which airlines have the cheapest flights from Ontario to Bangkok?

Between 17 Nov and 15 Jul 2027, Korean Air has the cheapest return on 15 of the 33 departure dates we hold, China Airlines on 9 and United Airlines on 5. Between 8 Jan 2027 and 1 Sept 2027, Korean Air has the cheapest one-way on 6 of the 8 departure dates we hold, China Airlines on 1 and STARLUX Airlines on 1.