Cheap flight deals from Belfast to Siem Reap

We've found these cheap flights for you. You can book one-way or round-trip flight tickets.

Round-trip
One way

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Flight Info | Belfast to Siem Reap

Off-season for travel	March
Peak season for travel	April
Flight distance	10,015.75 km
Popular airline	British Airways

When is the cheapest time to fly from Belfast to Siem Reap?

We monitor flight fares to help you find the best deals effortlessly

Cheapest flights

From price

20 27
May

27 4
4 11
11 18
18 25
Jun

25 1
1 8
8 15
15 22
22 29
Jul

29 6
6 13

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

When are flight tickets from Belfast (BFS) to Siem Reap (REP) the cheapest?

Airlines adjust prices for flights from Belfast to Siem Reap based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
How much do flights from Belfast (BFS) to Siem Reap (REP) cost?

According to Trip.com's data, the lowest price is around Rp 15,550,217.

How to find a cheap flight from Belfast to Siem Reap

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Belfast to Siem Reap. Book your flights at the right time and save more.

Be flexible with your travel dates to get the cheapest Belfast to Siem Reap ticket.

Tap "Date" on flight search bar to get the calender for Belfast to Siem Reap airfare over next 6 months in 2025.

Compare cheap Belfast to Siem Reap flight deals from hundreds of airlines.

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Set up a Price Alert to track fare drops.

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Book early or wait unitl the last minute to fine the best fares.

It's always better to book early! Airlines typically release their lowest fares about a year before departure, so check as soon as flights become available. If you miss that window, you may still find great deals closer to your travel date.

Search for flights on the go.

For the best booking experience on the go, download Trip.com and search for cheap flights from Belfast to Siem Reap to access exclusive deals just for you.