Flights from Dublin to Siem Reap
Southeast AsiaYear-round

Cheap Flights from Dublin to Siem Reap

Track economy fares on the DUBREP route and get alerts when prices drop.

From
Dublin
DUB
To
Siem Reap
REP

Route Intelligence: DublinSiem Reap

Flight Duration

18 hr 30 min (2 Stops typical)

Price Guidance

A good deal is under $700 roundtrip. Standard fare is $1,000–$1,400+.

Peak Season

November to February

Top Airlines

Thai Airways, Vietnam Airlines, Cathay Pacific

Booking Tip

Book 3-6 months in advance for best fares. Routing through Bangkok (BKK) or Ho Chi Minh City (SGN) often yields the most competitive prices and convenient connections.

Track DublinSiem Reap Fares

Set your target price and FlightKitten will scan this route twice daily. The instant economy fares drop below your budget, you'll get an email with the price, airline, and a direct booking link.

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If you're considering business class on this route, BusinessClassSignal.com is a dedicated tool that tracks premium cabin fares. They alert you when business & first class prices drop — worth checking out if you fly up front.

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Other Routes to Siem Reap

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Route Briefing: Dublin to Siem Reap

Few routes from Dublin carry you quite so far from grey skies and into something genuinely otherworldly as this one. You're trading the Atlantic coast for the heart of Southeast Asia, and while the journey — around eighteen and a half hours with two stops — demands patience, what's waiting at the other end makes every layover worthwhile. Siem Reap is the gateway to Angkor, the largest religious monument on earth, and a place that has a habit of stopping even the most seasoned travellers dead in their tracks.

Fares under $700 roundtrip represent genuinely strong value for a route of this distance, though standard pricing typically sits between $1,000 and $1,400. Thai Airways, Vietnam Airlines, and Cathay Pacific are your most reliable carriers here, and routing through Bangkok or Ho Chi Minh City tends to unlock the most competitive prices while also offering smooth onward connections into Siem Reap. Book three to six months ahead and you'll give yourself the best shot at those lower fares — this isn't a route where last-minute deals tend to materialise.

Timing your visit matters enormously. November through February is peak season for good reason: the weather is dry, temperatures are more manageable, and the jungle light around the temples in the early morning is nothing short of extraordinary. Angkor Wat at sunrise, with mist still sitting over the reflecting pools, is one of those experiences that photographs simply cannot prepare you for. Beyond the main temple complex, the wider Angkor Archaeological Park contains dozens of sites — Ta Prohm, with its famous tree roots swallowing ancient stone, and the walled city of Angkor Thom among them.

Siem Reap itself is a lively, walkable town with a strong street food culture, plenty of guesthouses and hotels across all budgets, and a genuinely warm local atmosphere. From the airport, tuk-tuks and taxis are readily available for the short ride into the centre of town — it's a straightforward arrival even if you're arriving bleary-eyed after a long haul from Dublin.

The one tip worth holding onto: hire a tuk-tuk driver for a full day at the temples rather than rushing through independently. A good driver doubles as a local guide, knows the quieter hours at each site, and can get you to the lesser-visited temples before the crowds arrive. It's one of those small decisions that transforms a sightseeing trip into something you'll genuinely remember.

How much are flights from Dublin to Siem Reap in 2026?

Flight prices from Dublin (DUB) to Siem Reap (REP) vary significantly depending on the season, day of the week, and how far in advance you book. A good deal is under $700 roundtrip. Standard fare is $1,000–$1,400+. Popular carriers on this route include Thai Airways, Vietnam Airlines, Cathay Pacific. FlightKitten eliminates the guesswork by monitoring 220+ airlines twice daily and alerting you the moment economy fares hit your target price.

How does FlightKitten track Dublin to Siem Reap fares?

FlightKitten scans over 220 airlines twice every day for economy fares on the DUB to REP route. When you set a target price, FlightKitten continuously monitors this route and sends an email alert the moment fares drop below your budget. Each alert includes the exact fare, airline, dates, and an AI-powered briefing that explains whether the deal is genuinely good compared to historical pricing on this route. No more obsessive price checking — set your budget and let FlightKitten do the watching.

Pro tip: Book 3-6 months in advance for best fares. Routing through Bangkok (BKK) or Ho Chi Minh City (SGN) often yields the most competitive prices and convenient connections.

Looking for business class deals on this route? We recommend checking out BusinessClassSignal.com — a dedicated premium cabin fare tracker that's worth a look if you fly up front.