Bangkok to Ontario flights

Routavio compares airline fares from several flight booking sites. Search Bangkok to Ontario to see the lowest price before you book.

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Lowest fare seen

€419Seen on 12 Oct 2026

Last checked

2 Nov 2026

Observed fares. Prices may change.

Your next trip, last seen at €707

Lowest observed

7 - 21 Feb 2027

1 stop · 14 nights

Cheapest observed day · Last checked: 30 Oct 2026

When to fly

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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.

Round-trip fare

Prices are for observed departure and return date pairs. No data does not mean no flights.

Airlines seen: Air Premia, Alaska Airlines, China Airlines, Frontier Airlines, Korean Air, Philippine Airlines, STARLUX Airlines, Thai AirAsia, Thai Lion Air, United Airlines (10)
Typical journey time: 21h 10m

Short answer

Routavio has seen Air Premia fares from Bangkok to Ontario. These are prices Routavio's searches returned on the dates shown, not quotes; run a live search for today's fare. Lowest fare seen: €419 on 12 Oct 2026.

Bangkok → OntarioSun 7 Feb 2027 · €707Last checked: 30 Oct 2026

About this route

Explore the fares we observed from Bangkok to Ontario. Prices move often, so pick your dates to see the latest options.

Route distance: 13,342 km
Typical journey time: 21h 10m
Seen on fares with a connection: China Airlines, STARLUX Airlines, Air Premia, Philippine Airlines, Thai Lion Air
Alternative airports: DMK

Route-level information; individual journeys vary.
We have not observed non-stop service on this route; the fares shown include at least one stop.

A clearer picture of your fare

Observed, not guaranteed

Every price is a fare we actually saw, and it may change at any time.

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The price is final on the provider's site, where your booking is completed.

How our prices work

Price alert

Price alert for Bangkok → Ontario

If the observed fare for this date drops, we will email you. At most one message a day.

Airport to city: straight-line distance

Don Mueang International Airport (DMK) → Bangkok, city gazetteer reference point (13.7563, 100.5018): ≈ 21 km.
Suvarnabhumi Airport (BKK) → Bangkok, city gazetteer reference point (13.7563, 100.5018): ≈ 28 km.
Ontario International Airport (ONT) → Ontario, city gazetteer reference point (34.0500, -117.6400): ≈ 4 km.

Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.

Frequently asked

How much was a flight from Bangkok to Ontario?

A fare of €419 was seen on 12 Oct 2026. Fares change, so search your dates for the current price.

Are there direct flights from Bangkok to Ontario?

Our data holds no non-stop flight from Bangkok to Ontario. The fares on this page include at least one stop.

Which airlines fly from Bangkok to Ontario?

Routavio has seen these carriers on the route: Air Premia, Alaska Airlines, China Airlines, Frontier Airlines, Korean Air, Philippine Airlines, STARLUX Airlines, Thai AirAsia, Thai Lion Air, United Airlines (10).

How long does the flight from Bangkok to Ontario take?

Across the 37 fares Routavio observed, the average journey time is 29h 51m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.

How many of the observed Bangkok to Ontario fares were non-stop?

None of the 41 fares we observed was non-stop; every one included at least one stop. That describes our observations, not every flight that operates.

How observed prices work, what "No data" means and what a fare includes: Read the flight price guide · Price and schedule freshness on Routavio