Business class flights from Newark (EWR) to Siem Reap (REP) start from $2,650 round-trip — up to 40% below published airline prices. The ~17 hours journey covers 8,697 miles, with 3 airlines offering lie-flat seats on this route. Best time to book: 3–6 months in advance for best fares.
EWR → REP
Newark to Siem Reap Business Class
From$2,650
Route Overview
Starting From
$2,650 round-trip
Flight Duration
~17 hours
Distance
8,697 miles
Airlines
3 carriers
Best Value
Jan, Feb, Mar
Savings
Up to 60% off retail
Route Intelligence
Business Class from Newark to Siem Reap
Siem Reap exists for one reason above all others: Angkor. The temple complex sprawls across roughly 150 square miles of Cambodian jungle, and Angkor Wat itself is just the beginning — Ta Prohm with its tree roots swallowing stone, the faces of Bayon, the moated grandeur of Angkor Thom. Most travelers spend three to four days here working through the temple circuits at sunrise and late afternoon, when the heat breaks and the light turns gold. Beyond the temples, Siem Reap town has developed into a genuinely pleasant base, with a compact old quarter, strong Khmer and French-Cambodian dining, and enough boutique hotels and spas to make recovery from the long flight over worthwhile.
Airlines & Cabin Experience
Getting there from Newark is not a one-stop affair no matter what you're told — this is one-stop-plus territory, routing through a major Asian hub before a final short hop into REP. The three carriers we book most for this journey each solve the problem differently. Singapore Airlines runs you through Changi on their well-regarded Business Class product, a 1-2-1 lie-flat layout with the Book the Cook pre-order dining service, then a short connection down to Siem Reap. Thai Airways funnels through Bangkok's Suvarnabhumi in Royal Silk Class, a staggered lie-flat seat, also 1-2-1, and the connection to REP is barely an hour — this is often the most time-efficient combination on paper. Cathay Pacific routes via Hong Kong, and their reverse herringbone Business seat is a favorite among our clients for the extra privacy each seat affords; the Pier lounges at HKG are worth the layover on their own.
Pricing & Best Time to Fly
For Newark to Siem Reap business class, the retail fare on these three carriers regularly prices in the $9,000–$12,000 round-trip range once you factor in the connecting segments and taxes on an ultra-long-haul, dual-carrier itinerary. Through our consolidator agreements we're pricing this route at $2,650 to $7,500 round-trip, with the spread depending on cabin availability, how far out you book, and whether you're flying peak season. January through March and November through December are the strongest months to travel — this window avoids Cambodia's hot, rainy season (roughly April through October) and lines up with the driest, most comfortable temple-touring weather. It's also, unsurprisingly, when fares run highest, so booking 3-4 months ahead for this window matters more than on most routes.
Why Book Through BestBusinessClass.com
Practically speaking, this is a long day and a half of travel each direction — figure 20-24 hours gate to gate depending on connection times — so seat choice matters more than usual. All three lie-flat products here are genuinely comfortable for sleep, but if you're routing through Bangkok or Hong Kong with a short connection, you'll want the layover built for a stretch and a shower rather than a sprint. Longer connections through Singapore or Hong Kong let you use lounge shower suites before the final leg, which makes a real difference on arrival into Siem Reap's heat. We also recommend building in at least one day of slack on the return before any onward domestic connection in the US, since misconnects on multi-carrier itineraries from this part of the world aren't rare.
Airline Comparison
Singapore Airlines
Singapore Business
Lie-flat, 1-2-1
Award-winning cabin, Book the Cook dining
Read Full Review →
Thai Airways
Royal Silk Class
Lie-flat staggered, 1-2-1
Thai hospitality, spa treatments
Read Full Review →
Cathay Pacific
Cathay Business
Lie-flat reverse herringbone, 1-2-1
Hong Kong hub, Pier lounge
Read Full Review →Top Rated
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The Business Class Standard
Lie-Flat Guarantee
We only sell true Business Class. 180° fully flat beds on all long-haul routes, ensuring you arrive rested.
Premium Lounges
Access the world's finest lounges. Enjoy pre-flight dining, showers, and quiet workspaces before you board.
Priority Service
Skip the queues. Your ticket includes fast-track security, priority boarding, and premium baggage handling.
The Business Class Standard
Lie-Flat Guarantee
We only sell true Business Class. 180° fully flat beds on all long-haul routes, ensuring you arrive rested.
Premium Lounges
Access the world's finest lounges. Enjoy pre-flight dining, showers, and quiet workspaces before you board.
Priority Service
Skip the queues. Your ticket includes fast-track security, priority boarding, and premium baggage handling.
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