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Cheap flights from Birmingham to Siem Reap from £622

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Birmingham to Siem Reap departing on 10/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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Find the cheapest flights from Birmingham to Siem Reap

Cheap return flights

Enter your travel dates to find the best prices.
SWISS Logo
18:50 - 09:40
BHX
-
SAI
32h 50m
2 stops
SWISS Logo
09:40 - 08:05
SAI
-
BHX
28h 25m
2 stops
£622SWISS
Thu, 10 Sep - Thu, 24 Sep
Multiple Airlines Logo
18:50 - 09:40
BHX
-
SAI
32h 50m
2 stops
Multiple Airlines Logo
15:10 - 13:40
SAI
-
BHX
28h 30m
3 stops
£819Multiple Airlines
Thu, 10 Sep - Thu, 24 Sep
Multiple Airlines Logo
05:55 - 18:45
BHX
-
SAI
30h 50m
3 stops
Multiple Airlines Logo
19:10 - 22:10
SAI
-
BHX
33h 00m
3 stops
£1,171Multiple Airlines
Thu, 10 Sep - Thu, 24 Sep

momondo Fare Finder

 
Customise your flight search to find flights from Birmingham to Siem Reap that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 25 March 2026.
Use the filters below to find and compare flights from Birmingham to Siem Reap that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

BirminghamSiem Reap

BHX - SAI

BHXSAI

Birmingham

Thu 10/9

18:50-09:40

2 stops32h 50m

Siem Reap–Angkor Intl

Thu 24/9

09:40-08:05

2 stops28h 25m

£622

BirminghamSiem Reap

BHX - SAI

BHXSAI

Birmingham

Thu 10/9

18:50-09:40

2 stops32h 50m

Siem Reap–Angkor Intl

Thu 24/9

15:10-13:40

3 stops28h 30m

£819

BirminghamSiem Reap

BHX - SAI

BHXSAI

Birmingham

Thu 10/9

05:55-18:45

3 stops30h 50m

Siem Reap–Angkor Intl

Thu 24/9

19:10-22:10

3 stops33h 00m

£1,171

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

When to book flights from Birmingham to Siem Reap

Are you open to changing your travel dates? Check out the ideal times to fly from Birmingham to Siem Reap according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Birmingham to Siem Reap (BHX to SAI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Birmingham to Siem Reap

Fastest flight time

32h 50m

Direct flights

None
The fastest flight from Birmingham to Siem Reap takes 32h 50m
There are no direct flights from Birmingham to Siem Reap. There are no popular flight routes from Birmingham to Siem Reap.
Search flight deals

  • How far is Birmingham to Siem Reap–Angkor Intl by plane?

    There are 6125.6 mi between Birmingham and Siem Reap–Angkor Intl. A reasonable flight in good conditions will take 32h 50m.

  • When did momondo last update prices for flights from Birmingham Airport to Siem Reap–Angkor Intl Airport?

    Prices for flights from Birmingham Airport to Siem Reap–Angkor Intl Airport are updated daily.

  • How old do you have to be to fly from Birmingham Airport to Siem Reap–Angkor Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Birmingham Airport to Siem Reap–Angkor Intl Airport.

  • What documentation or ID do you need to fly to Siem Reap–Angkor Intl Airport?

    The necessary travel and health documents for your Siem Reap–Angkor Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • How do I get Price Alerts for flights from Birmingham to Siem Reap?

    Confirm your travel details to search for the latest offers for flights from Birmingham to Siem Reap. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Birmingham to Siem Reap with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Why use momondo?

Why should I use momondo to find a flight deal from Birmingham to Siem Reap?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Birmingham to Siem Reap. momondo saves you time and could save you money on your trip.

Can I find flights from Birmingham to Siem Reap with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Birmingham to Siem Reap flights to just show those with flexible booking policies.

How can momondo help me find flights from Birmingham to Siem Reap?

Once all potential Birmingham to Siem Reap flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Birmingham to Siem Reap right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Siem Reap from Birmingham. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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