Flights from Houston to Siem Reap
Southeast AsiaYear-round

Cheap Flights from Houston to Siem Reap

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

From
Houston
IAH
To
Siem Reap
REP

Route Intelligence: HoustonSiem Reap

Flight Duration

20 hr 30 min (2 Stops)

Price Guidance

A good deal is under $900 roundtrip. Standard fare is $1,300+.

Peak Season

November to February

Top Airlines

Korean Air, China Southern Airlines, Thai Airways

Booking Tip

Book 3-6 months in advance for the best fares, as this multi-stop route has limited seat availability. Connecting through Seoul (ICN), Guangzhou (CAN), or Bangkok (BKK) typically yields the most competitive prices.

Track HoustonSiem 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.

Start Tracking — Free 7-Day Trial
Premium Cabin

Flying Business Class?

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.

Explore BusinessClassSignal.com →

Other Routes to Siem Reap

More Destinations in Southeast Asia

Route Briefing: Houston to Siem Reap

Few flights from Houston reward the journey quite like this one. Yes, you're looking at around 20 and a half hours in the air across two stops, but what waits on the other end — the ancient temple complex of Angkor Wat rising out of the Cambodian jungle — is genuinely one of those experiences that reframes how you think about human civilization. This is not a trip you take halfway.

On the fare side, roundtrip tickets under $900 represent a genuinely strong deal on this route, while standard pricing tends to hover above $1,300. Korean Air, China Southern, and Thai Airways are your most reliable carriers here, connecting through Seoul, Guangzhou, or Bangkok respectively. Each of those hubs is a solid transit experience in its own right, and Bangkok in particular can be worth building a brief layover around if your schedule allows. Because seat availability on this multi-stop routing is genuinely limited, booking three to six months ahead isn't just advice — it's the difference between a great fare and an eye-watering one.

Siem Reap International Airport sits close to the city, and tuk-tuks are the classic, affordable way to reach your accommodation — drivers are typically waiting outside arrivals and the ride into town is short. The city itself is compact, lively, and built around the tourism that Angkor generates, which means you'll find everything from street food markets to comfortable guesthouses without much effort.

The temples are the reason you came, and Angkor Wat at sunrise is as extraordinary as its reputation suggests. But don't stop there — the sprawling Angkor Thom complex, the jungle-consumed Ta Prohm with its famous tree roots swallowing stone walls, and the quieter outlying temples reward anyone willing to spend more than a single day exploring. Hire a local guide; the history here is layered and a knowledgeable guide transforms the experience completely.

Timing matters significantly. November through February is peak season for good reason — the weather is cooler and drier, making long days of temple-walking genuinely comfortable. The wet season brings lush green landscapes and far fewer crowds, but the heat and humidity are intense, so pace yourself accordingly.

One tip worth remembering: get to Angkor Wat before dawn on your first full day. The crowds build quickly after sunrise, and those early morning hours — mist still hanging over the reflection pools, the stone glowing in soft light — are when the place feels closest to what it must have been.

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

Flight prices from Houston (IAH) 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 $900 roundtrip. Standard fare is $1,300+. Popular carriers on this route include Korean Air, China Southern Airlines, Thai Airways. 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 Houston to Siem Reap fares?

FlightKitten scans over 220 airlines twice every day for economy fares on the IAH 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 the best fares, as this multi-stop route has limited seat availability. Connecting through Seoul (ICN), Guangzhou (CAN), or Bangkok (BKK) typically yields the most competitive prices.

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.