Your next trip, last seen at €470
Lowest observedKorean Air · 3 stops · One wayWhen 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.
One-way fare
- Lowest observed
- €470, departing 22 Jan 2027 (Last checked: 22 Oct 2026)One-way fareCheck live prices for this route
- Airlines seen
- Alaska Airlines, Bangkok Airways, Cathay Pacific, China Airlines, Frontier Airlines, Hainan Airlines, Korean Air, Scoot, Singapore Airlines, STARLUX Airlines, United Airlines (11)
- Typical journey time
- 37h 55m
About this route
Explore the fares we observed from Ontario to Koh Samui. Prices move often, so pick your dates to see the latest options.
- Route distance
- 13,745 km
- Typical journey time
- 37h 55m
- Seen on fares with a connection
- Korean Air, China Airlines, Frontier Airlines, Bangkok Airways, STARLUX Airlines, Alaska Airlines, Cathay Pacific (7)
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
If the observed fare for this date drops, we will email you. At most one message a day.
Airport to city: straight-line distance
- Ontario International Airport (ONT) → Ontario, city gazetteer reference point (34.0500, -117.6400): ≈ 4 km.
- Samui International Airport (USM) → Koh Samui, city gazetteer reference point (9.5553, 100.0628): ≈ 1 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.
Lowest one-way fare we saw per airline
Cheapest airline from Ontario to Koh Samui: Korean Air, from €470 (checked 22 Oct 2026).
| Airline | Lowest fare | Priced days |
|---|---|---|
| Korean Air | €470Jan 22, 2027 | 36 |
| Frontier Airlines | €556Nov 21, 2026 | 9 |
| Bangkok Airways | €576Nov 4, 2026 | 4 |
| STARLUX Airlines | €576Nov 11, 2026 | 8 |
| Alaska Airlines | €633Jan 19, 2027 | 5 |
| China Airlines | €653Nov 14, 2026 | 7 |
One-way fares checked in the last 14 days. An airline listed here had a fare on at least 3 departure days. Each figure is the lowest we saw, not a guaranteed fare. Connecting itineraries are included; the date is the departure day of that fare.
Frequently asked
How much is a flight from Ontario to Koh Samui?
The lowest fare Routavio has observed is €470, found on 22 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Ontario to Koh Samui?
In our observations January 2027 is the cheapest month so far, at €470.
Are there direct flights from Ontario to Koh Samui?
Our data holds no non-stop flight from Ontario to Koh Samui. The fares on this page include at least one stop.
Which airlines fly from Ontario to Koh Samui?
Routavio has seen these carriers on the route: Alaska Airlines, Bangkok Airways, Cathay Pacific, China Airlines, Frontier Airlines, Hainan Airlines, Korean Air, Scoot, Singapore Airlines, STARLUX Airlines, United Airlines (11).
How long does the flight from Ontario to Koh Samui take?
Across the 72 fares Routavio observed, the average journey time is 41h 18m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
How many of the observed Ontario to Koh Samui fares were non-stop?
None of the 72 fares we observed was non-stop; every one included at least one stop. That describes our observations, not every flight that operates.
Which airline has the lowest fare from Ontario to Koh Samui?
Cheapest airline from Ontario to Koh Samui: Korean Air, from €470 (checked 22 Oct 2026).
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide · Price and schedule freshness on Routavio
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Recently observed fares. Prices may change.