Udon Thani to Sydney flights
Routavio compares airline fares from several flight booking sites. The lowest one-way fare it found for Udon Thani to Sydney is €259 with Thai Airways (checked on 28 Oct 2026).
Your next trip, last seen at €259
Lowest observedThai Airways · 2 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
- €259, departing 8 Dec 2026 (Last checked: 28 Oct 2026)One-way fare · Priced departure days checked in the last 14 days: 51Check live prices for this route
- Airlines seen
- China Southern, Scoot, Thai AirAsia, Thai Airways, Thai Lion Air, Thai Vietjet Air, Vietjet (7)
- Typical journey time
- 20h 20m
About this route
Explore the fares we observed from Udon Thani to Sydney. Prices move often, so pick your dates to see the latest options.
- Route distance
- 7,662 km
- Typical journey time
- 20h 20m
- Seen on fares with a connection
- Thai Vietjet Air, Thai Airways, Thai AirAsia, Thai Lion Air
- Alternative airports
- WSI
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
- Udon Thani International Airport (UTH) → Udon Thani, city gazetteer reference point (17.3647, 102.8159): ≈ 4 km.
- Sydney Kingsford Smith International Airport (SYD) → Sydney, city gazetteer reference point (-33.8689, 151.2071): ≈ 9 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 fare by departure month
Cheapest month from Udon Thani to Sydney: December 2026, from €259 (checked 28 Oct 2026).
| Month | Lowest fare | Priced days |
|---|---|---|
| November 2026 | €266 | 27 |
| December 2026 | €259 | 24 |
Lowest fare by day of the week
Cheapest day of the week from Udon Thani to Sydney: Tuesday, from €259 (checked 28 Oct 2026).
| Day | Lowest fare | Priced days |
|---|---|---|
| Monday | €270 | 6 |
| Tuesday | €259 | 8 |
| Wednesday | €259 | 8 |
| Thursday | €266 | 8 |
| Friday | €270 | 6 |
| Saturday | €271 | 7 |
| Sunday | €276 | 8 |
One-way fares checked in the last 14 days. Each figure is the lowest priced departure day we saw, not a guaranteed fare.
Lowest fare by days before departure
Lowest fare from Udon Thani to Sydney by days until departure (31 to 60 days): €259 (checked 28 Oct 2026).
| Days before departure | Lowest fare | Priced days |
|---|---|---|
| 0 to 7 days | €272 | 6 |
| 8 to 30 days | €266 | 23 |
| 31 to 60 days | €259 | 22 |
One-way fares checked in the last 14 days. Each figure is the lowest stored fare for that distance to departure, not a price forecast.
Fares for different departure dates, checked now; not a guide to when to book.
Lowest one-way fare we saw per airline
Cheapest airline from Udon Thani to Sydney: Thai Airways, from €259 (checked 28 Oct 2026).
| Airline | Lowest fare | Priced days |
|---|---|---|
| Thai Airways | €259Dec 8, 2026 | 12 |
| Thai Vietjet Air | €266Nov 17, 2026 | 30 |
| Thai AirAsia | €278Dec 2, 2026 | 8 |
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 Udon Thani to Sydney?
The lowest fare Routavio has observed is €259, found on 28 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Udon Thani to Sydney?
Cheapest month from Udon Thani to Sydney: December 2026, from €259 (checked 28 Oct 2026).
Are there direct flights from Udon Thani to Sydney?
Our data holds no non-stop flight from Udon Thani to Sydney. The fares on this page include at least one stop.
Which airlines fly from Udon Thani to Sydney?
Routavio has seen these carriers on the route: China Southern, Scoot, Thai AirAsia, Thai Airways, Thai Lion Air, Thai Vietjet Air, Vietjet (7).
How long does the flight from Udon Thani to Sydney take?
Across the 54 fares Routavio observed, the average journey time is 22h 42m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
How many of the observed Udon Thani to Sydney fares were non-stop?
None of the 54 fares we observed was non-stop; every one included at least one stop. That describes our observations, not every flight that operates.
Which day of the week is cheapest from Udon Thani to Sydney?
Cheapest day of the week from Udon Thani to Sydney: Tuesday, from €259 (checked 28 Oct 2026).
Which airline has the lowest fare from Udon Thani to Sydney?
Cheapest airline from Udon Thani to Sydney: Thai Airways, from €259 (checked 28 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.