How to Fly from London to Siem Reap: A Comprehensive Travel Guide

Written by Tony Bùi, with over 20 years of experience in the travel industry, personally guiding and organizing tours for over 100,000 travellers across Southeast Asia. This guide draws from firsthand insights, guest feedback from Legend Travel Group surveys, and official sources like Legend Travel Group’s expertise in Cambodia. Legend Travel Group since 2008. Information based on the latest data; verify before travel. Reflects Cambodia’s updated travel regulations for UK citizens.

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=> Best of Cambodia: Phnom Penh to Siem Reap 5-Day Tour

A Practical, Cultural, and Rewarding Journey

Siem Reap, the gateway to the magnificent Angkor Wat temples, is one of the most enchanting destinations from London — visa on arrival or e-visa available for UK citizens (up to 30 days), convenient connecting flights from London Heathrow (LHR) or Gatwick (LGW) to Siem Reap International Airport (SAI) or via Phnom Penh (PNH) (total travel time ~14–20 hours), ancient Khmer temples, vibrant night markets, floating villages, and excellent value for money. From the awe-inspiring Angkor complex, Ta Prohm temple, Bayon, to Tonle Sap Lake and Khmer cultural shows, the Best Cambodia Tours from Legend Travel Group offer perfectly tailored experiences blending history, spirituality, nature and gastronomy. Legend Travel Group specialises in packages with English-speaking guides, vegetarian/halal meal options, and flexible payments—deposit just 10% and pay the rest 30 days before departure. Ideal for families, couples, solo travellers, retirees, and eco-conscious visitors.

Legend Travel Group connects the UK and Siem Reap seamlessly. This guide provides practical flight information, tips and sustainable travel ideas.

Administrative Note

UK citizens can obtain a visa on arrival (30 days, $30 USD) or apply for an e-visa online. Passport valid 6+ months required. No vaccinations required but recommended: Hepatitis A/B, Typhoid. Flight costs vary widely ($550–$1,600+ round-trip depending on season, airline and booking time). No direct flights from London; all involve 1–2 stops. Main arrival airport: Siem Reap International Airport (SAI). Verify travel advisories, visa rules and entry requirements via official sources or Legend Travel Group support.

Main Routes & Airlines

• To Siem Reap (SAI) — Popular connections via Bangkok (BKK), Ho Chi Minh City (SGN), Singapore (SIN), Kuala Lumpur (KUL), or Phnom Penh (PNH).
• Best Airlines — Thai Airways, Singapore Airlines, Qatar Airways, Emirates, Vietnam Airlines, AirAsia, Malaysia Airlines.
• Flight Time — No direct flights; fastest connections ~14–17 hours (e.g., via Bangkok or Singapore); average 15–20 hours including layovers.
• Accessibility from London — Depart from LHR or LGW; major hubs include Bangkok, Singapore, Doha, Dubai; short flight or bus from Phnom Penh to Siem Reap if needed.

Key Tips for Booking

• Book 2–4 months in advance for best prices (cheapest often mid-week departures).
• Use tools like Google Flights, Skyscanner or airline sites to compare.
• Consider flexible dates; shoulder seasons (May–Jun, Sep–Oct) often cheaper.
• Check baggage allowances — many Asian carriers offer generous checked baggage.

Visa Process

• Visa on Arrival — Available at Siem Reap Airport ($30 USD cash, 30 days).
• E-Visa — Apply online (official site); $36 USD, faster processing.
• Passport must have 6+ months validity and 2 blank pages.
• Print e-visa or keep cash ready for on-arrival visa.

General Advice:

• Dress modestly when visiting temples.
• Respect local customs and Buddhist sites.

Here are popular options based on current trends and Legend Travel Group recommendations. Always confirm schedules and prices.

1. Fastest & Most Comfortable (via Bangkok or Singapore)

• Airlines — Thai Airways (via BKK), Singapore Airlines (via SIN).
• Duration — ~14–16 hours total.
• Cost — Round-trip often $650–$1,100 (economy).
• Tip — Excellent service and smooth connections; one traveller noted: “Thai Airways made the long journey feel effortless.”

2. Budget-Friendly (via Kuala Lumpur or Ho Chi Minh City)

• Airlines — AirAsia, Malaysia Airlines (via KUL), Vietnam Airlines (via SGN).
• Duration — ~15–19 hours.
• Cost — Round-trip from $550–$850.
• Tip — Great value with good connections.

3. Premium Experience (via Doha or Dubai)

• Airlines — Qatar Airways (via DOH), Emirates (via DXB).
• Duration — ~16–20 hours.
• Cost — Round-trip $800–$1,600+.
• Tip — Superior comfort and in-flight entertainment; ideal for business or premium economy.

4. Multi-City or Open-Jaw Options

• Fly into Siem Reap (SAI), out of Phnom Penh (PNH) or vice versa.
• Cost — Similar to round-trip; adds flexibility for temple-to-beach itineraries.
• Tip — Book via Legend Travel Group for combined flight + tour packages.

Main opportunities:

• November–April (dry & cool season) — Best overall: pleasant weather, ideal for exploring Angkor Wat, temples and outdoor activities.
• May–October (wet season) — Afternoon showers, lush greenery, fewer crowds, excellent for budget flights and lower hotel rates.

Dry season (Nov–Apr) is ideal for first-time visitors. Shoulder months offer good deals and fewer tourists. Check forecast via Legend Travel Group support.

• Online Platforms — Use Google Flights, Skyscanner, Kayak or direct airline sites.
• Tour Packages — Contact Legend Travel Group for flight + tour combos (visa assistance, airport transfers, guides).
• Advice — Book early for high season (Dec–Feb); compare layover times; carry USD for visa fees; confirm visa before travel.

• Documents — Passport (6+ months validity), printed e-visa or cash for visa on arrival, flight tickets.
• Clothing — Lightweight clothes, modest attire for temples (shoulders & knees covered), comfortable walking shoes, rain jacket (wet season).
• Essentials — Reusable water bottle, sunscreen, insect repellent, power bank.
• Extras — Small USD notes, travel adapter (Type A/C/G), medications. Advice — Pack light; reusable items support sustainability.

Flight Costs (Round-Trip Economy)

• Low season: $550–$850.
• High season: $850–$1,600+.

Other Costs

• Visa: $30–$36.
• Airport transfers in Siem Reap: $10–$25.
• Internal Cambodia flights: $50–$120.

Advice — Budget $600–$1,800+ for flights depending on season and class.

• Arrive at LHR/LGW 3+ hours early for international flights.
• Choose shorter layovers (2–4 hours) to reduce fatigue.
• Stay hydrated; move around during long flights.
• Download offline maps (Maps.me) for Siem Reap and Angkor.
• Use Grab or taxis in Cambodia.
• Safety: Keep valuables secure; emergency number 112/117.
• Sustainability: Choose airlines with carbon offset programs; support eco-tours.

• Are there direct flights? No; all require 1–2 stops.
• Best airlines? Thai Airways, Singapore Airlines, Qatar Airways for comfort and reliability [Legend Travel Group expertise].
• Flight time? ~14–20 hours total.
• Visa needed? Yes, visa on arrival or e-visa.
• Cheapest time? Shoulder seasons (May–Jun, Sep–Oct).
• Combine with tours? Yes, Legend Travel Group offers flight-inclusive Angkor packages.

Combine your flight with sustainable tours:

• Classic Angkor Discovery ($950–$1,800/person, 6 days) — Siem Reap, Angkor Wat, Tonle Sap.
• Premium Cambodia Explorer ($2,000–$3,500/person, 10 days) — Siem Reap, Phnom Penh, Mekong.
• Temple & Beach Combo ($1,500–$2,800/person, 8 days) — Angkor + coastal relaxation.

Prices include guides, transport, entries; group discounts available. Contact sales@legendtravelgroup.com / WhatsApp (+84 825862222) for your Cambodia Travel plans.

Flying from London to Siem Reap opens the door to one of Asia’s greatest cultural treasures — the majestic Angkor temples. With convenient connecting flights of ~14–20 hours, simple visa options, and affordable tour packages, this journey combines ease with unforgettable experiences. Whether marvelling at Angkor Wat at sunrise, exploring ancient ruins or enjoying Khmer hospitality, respect local customs and plan ahead for the best experience. For flight + tour packages, check Legend Travel Group resources. Safe travels!

Sources:

• Legend Travel Group expertise
• Airline websites & flight aggregators