$570 Cheap Flights to Sihanoukville International
One-way
Departing from
United States
Going to
Sihanoukville International
Sihanoukville Province (KOS)
Cambodia • April, 2026
49% AI deal score
$837
Sihanoukville Province (KOS)
Cambodia • February, 2027
49% AI deal score
$849
Sihanoukville Province (KOS)
Cambodia • January, 2027
49% AI deal score
$861
Sihanoukville Province (KOS)
Cambodia • April, 2026
41% AI deal score
$570
Sihanoukville Province (KOS)
Cambodia • May, 2026
41% AI deal score
$1,244
This is the lowest one-way flight price found by RatePunk users in the last 24 hours for a flight going to Sihanoukville International. Fares are subject to change and may not be available for all dates. (Data last updated 4/11/2026).
Popular airlines to Sihanoukville International
AirAsia
Pacific Airlines
Royal Flying Doctor Service
Khalifa Airways
Kitty Hawk Aircargo
Aero Leasing
Lao Airlines
Transbrasil
484,045 searches in the past 7 days on RatePunk
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Top Cheap Flight Deals from United States to Sihanoukville International
Recent round-trip flight deals to Sihanoukville International
Wed, Apr 29 - Fri, May 15
Cheapest
Ontario (ONT) - Sihanoukville Province (KOS)
China Airlines airlines • 2 stops • Taipei (TPE), Ho Chi Minh City (SGN)
Sihanoukville Province (KOS) - Ontario (ONT)
Cambodia Angkor Air airlines • 2 stops • Ho Chi Minh City (SGN), Taipei (TPE)
$1,255
Sat, May 9 - Tue, Jun 9
San Diego (SAN) - Sihanoukville Province (KOS)
Frontier Airlines airlines • 3 stops • San Francisco (SFO), Manila (MNL), Ho Chi Minh City (SGN)
Sihanoukville Province (KOS) - San Diego (SAN)
Cambodia Angkor Air airlines • 3 stops • Ho Chi Minh City (SGN), Taipei (TPE), San Francisco (SFO)
$1,319
Fri, Apr 24 - Tue, May 19
Las Vegas (LAS) - Sihanoukville Province (KOS)
Frontier Airlines airlines • 3 stops • Los Angeles (LAX), Seoul (ICN), Ho Chi Minh City (SGN)
Sihanoukville Province (KOS) - Las Vegas (LAS)
Cambodia Angkor Air airlines • 3 stops • Ho Chi Minh City (SGN), Seoul (ICN), San Francisco (SFO)
$1,323
Sat, May 9 - Tue, May 19
Phoenix (PHX) - Sihanoukville Province (KOS)
Frontier Airlines airlines • 3 stops • San Francisco (SFO), Manila (MNL), Ho Chi Minh City (SGN)
Sihanoukville Province (KOS) - Phoenix (PHX)
Cambodia Angkor Air airlines • 3 stops • Ho Chi Minh City (SGN), Seoul (ICN), Los Angeles (LAX)
$1,325
Mon, May 4 - Fri, May 29
Santa Ana (SNA) - Sihanoukville Province (KOS)
Korean Air airlines • 3 stops • Seattle (SEA), Seoul (ICN), Ho Chi Minh City (SGN)
Sihanoukville Province (KOS) - Santa Ana (SNA)
Cambodia Angkor Air airlines • 3 stops • Ho Chi Minh City (SGN), Seoul (ICN), San Francisco (SFO)
$1,364
Sat, May 9 - Fri, May 29
Salt Lake City (SLC) - Sihanoukville Province (KOS)
Frontier Airlines airlines • 3 stops • San Francisco (SFO), Manila (MNL), Ho Chi Minh City (SGN)
Sihanoukville Province (KOS) - Salt Lake City (SLC)
Cambodia Angkor Air airlines • 3 stops • Ho Chi Minh City (SGN), Seoul (ICN), San Francisco (SFO)
$1,394
The cheapest time to fly to Sihanoukville International
Ready to jet to Sihanoukville International on a budget? Check out these popular routes with surprisingly cheap fares (one-way prices):
Last-Minute Flights from United States to Sihanoukville International
Need to get to Sihanoukville International ASAP? Even if you're booking a flight on short notice, there are often last-minute deals available:
Next 2 weeks deals
Last Minute Flight Deals
We found last minute flight deals to Sihanoukville Province, Cambodia starting from $1696, departing over the next two weeks.
⌛ Last-Minute
Omaha - KOS
A great last-minute steal for a cross-country flight.
Found 3 days ago
$1701
round-trip
⌛ Last-Minute
St. Louis - KOS
A great last-minute steal for a cross-country flight.
Found 3 days ago
$1696
round-trip
Tip: If you don’t see your city listed, try a quick search anyway – new deals appear daily. Airlines sometimes slash prices a few days before departure to avoid empty seats.
Keep in mind, while last-minute fares can be lucky finds, booking about a month in advance generally yields cheaper flights on average. If you have flexibility, try to plan ahead. But if an unexpected trip to Sihanoukville International pops up, check our site – you might get lucky with a sudden fare drop.
Facts About Flights from United States to Sihanoukville Province
To help you plan your journey, here are some quick Sihanoukville Province flight facts and tips.
Sihanoukville Province airports
Sihanoukville Province, Cambodia, is primarily served by Sihanoukville International Airport (KOS), also known as Kang Keng Airport. It is the main air gateway to the province and the coastal areas of Cambodia. KOS offers both domestic and international flights, connecting Sihanoukville to major cities in Cambodia and other destinations in Asia. The airport has undergone expansions to accommodate the growing number of tourists and investors visiting the region. Expect a range of services including transportation options, dining, and basic amenities for travelers. As Sihanoukville continues to develop as a tourism and economic hub, the airport plays a vital role in facilitating accessibility to the province.
Pro tip: search “Sihanoukville Province (Any)” to see fares to all Sihanoukville Province airports – sometimes one is cheaper than the others on your dates.
Insights for flights to Sihanoukville International
Cheapest airport
Sihanoukville (KOS)
Located in Sihanoukville Province, Sihanoukville International Airport (KOS) is your gateway to the Cambodian Riviera! While a smaller airport, it offers increasing international connections and puts you just a short ride away from the beaches and islands.
Nonstop vs. 1-stop
20+ cities
Sihanoukville Province is more of a secondary airport, but it still offers a gateway to the Cambodian coast, with popular routes connecting to major cities like Phnom Penh and Siem Reap.
Number of airlines
10+ airlines
Sihanoukville Province is served by over 10 airlines, including both full-service and low-cost carriers like Cambodia Airways, JC International Airlines, and Sky Angkor Airlines, offering various options for travelers.
Typical price range (round-trip)
From $400 to $1200
Planning a trip to Sihanoukville Province? Flight prices typically range from $400 to $1200, but keep an eye on the calendar! Prices tend to increase during peak tourist seasons and local holidays due to higher demand. Also, flights may be pricier if you're coming from a location that requires multiple connecting flights.
Flight frequency
10+ Flights
Flights to Sihanoukville Province operate regularly, though frequency can increase during peak tourist seasons like the dry season (November to April) and major holidays. While there is not enough information to pinpoint the busiest times of day, generally, more flights may be available in the mornings and evenings.
KOS Airport Deal Stats
Current most discounted routes
Avg. most discounted routes (last 3 months)
KOS airport insights
Best days to catch a deal
Wed, Mon
Based on the data, Wednesday has the highest count, indicating it's the best day to find cheap flight deals for Sihanoukville International Airport. Saturday and Sunday also show relatively good counts, suggesting potential deals on weekends.
Avg. deal survival time
7.4 hours
Deals for Sihanoukville International Airport typically last around 7.4 hours. Savvy travelers should stay alert and book quickly, as these deals have a short lifespan.
Rare deal frequency
17 deals
In the past month, we discovered 17 rare deals for Sihanoukville International Airport. These exceptional offers, identified with an AI Deal Score of 90+, typically include mistake fares, special promotions, or ultra-discounts.
Average price drop
-1%
The average price drop for flights arriving at Sihanoukville International Airport is 0.6%. This suggests that flight prices to this destination don't typically fluctuate dramatically.
Next 4 weeks: deal forecast
Sihanoukville International Airport Next Month Forecast
The forecast for Sihanoukville International Airport next month indicates stable flight prices with a slight increase expected due to the approaching peak travel season. Travelers should book in advance to secure the best available deals.
Top 5 biggest price drops (last 3 months)
Found on April 6
Bangkok - KOS
$350 → $178
49%
Found on April 5
Penang - KOS
$218 → $123
44%
Found on April 10
Kuala Lumpur - KOS
$140 → $98
30%
Found on April 4
Tokyo - KOS
$403 → $403
-
Found on April 9
Siem Reap - KOS
$134 → $134
-
Check these nearby airports too
Looking for more options? These airports near KOS sometimes drop rare deals too:
Phnom Penh International (PNH)
~10 rare deals/month
If you’re flexible with departure cities, it’s worth keeping an eye on nearby airports — especially PNH for long-haul deal surprises.
When Is the Best Time to Fly from United States to Sihanoukville International
Timing is everything when hunting for cheap flights. Here are data-backed insights on the best times to fly to Sihanoukville International:
Cheapest month
November
Cheapest month
If you're dreaming of a budget-friendly escape to Sihanoukville Province, November is your golden ticket! The weather is still fantastic, offering a sweet spot before the peak tourist rush. You'll find great deals on flights and accommodations, leaving you with more Khmer Riel to splurge on delicious seafood and island hopping adventures.
Best day to book
Tuesday
Best day to book
Tuesday is your secret weapon for snagging the best flight deals to Sihanoukville Province! Airlines often release new deals early in the week, and by Tuesday, you can swoop in and grab them before everyone else. Plus, fewer people are searching for flights on Tuesdays, which means less competition and lower prices.
Cheapest days to fly
Wednesday
Cheapest days to fly
Wednesday is your wingman for wallet-friendly flights to Sihanoukville Province. Flying mid-week often translates to significant savings compared to weekend flights. So, consider adjusting your travel dates to take advantage of these cheaper fares and have more cash in hand for exploring those stunning Cambodian beaches.
Advance booking sweet spot
2 months
Advance booking sweet spot
To lock in the best prices for your Sihanoukville Province adventure, aim to book about 2 months in advance. This timeframe typically hits the sweet spot where airlines offer competitive fares. Waiting until the last minute might leave you with limited options and higher prices, so plan ahead and get ready to soak up the sun!
Seasonal considerations
Distinct
Seasonal considerations
Sihanoukville Province experiences distinct seasonal weather patterns that can impact flight prices and your overall travel experience. The dry season (November to April) generally sees higher demand and prices due to the pleasant weather. Booking during the shoulder months (like May or October) might offer a good balance of decent weather and more affordable flights.
TL;DR: November is the cheapest month to fly to Sihanoukville Province, offering great weather and fewer crowds. Tuesdays are the best days to book your flights, while Wednesdays are typically the cheapest days to fly. Aim to book about 2 months in advance to snag the best deals. Keep in mind the distinct dry and wet seasons when planning your trip, as this will affect both prices and your experience.
Sihanoukville Province Airports & Ground Transportation
One big question for travelers is which Sihanoukville Province airport to fly into. Here’s a quick guide to Sihanoukville Province’s airports and how to get to the city from each:
Sihanoukville International Airport (KOS)
Sihanoukville International Airport, also known as Kang Keng Airport, is your gateway to the beautiful beaches and islands of Cambodia's Sihanoukville Province. Though relatively small, the airport has been growing in recent years, connecting you to major cities in Southeast Asia. Inside, you'll find basic amenities such as a restaurant and a souvenir shop to grab those last-minute gifts. Located about 17 kilometers from Sihanoukville city center, you can easily reach your destination by taxi or pre-booked private transfer. Consider confirming the price with the driver beforehand!
Tip: Factor in a little extra time for potential queues, especially during peak travel season.
Other airports
While Sihanoukville doesn't have a huge international airport, you've got options nearby! Consider flying into Phnom Penh International Airport or Koh Kong Airport. From there, you can catch a bus or private taxi to Sihanoukville – think of it as a mini road trip to kick off your beach vacation, the bus is the cheaper options while private taxi is faster. The drive from Phnom Penh is longer, but offers more flight choices, while Koh Kong is closer but might have fewer connections.
Airport transfers
Getting around Sihanoukville from the airport is a breeze! Taxis and tuk-tuks are readily available for quick trips to your hotel. For a more budget-friendly option, consider a shared minivan or bus, just be prepared for a potentially longer ride, but more social!
What to Do in Sihanoukville Province
Sihanoukville Province isn’t just about getting there – it’s about enjoying the country once you arrive! Here are some top things to do in Sihanoukville Province, organized by interest:
Sightseeing & landmarks
Sihanoukville is a place packed with beautiful temples, statues, waterfalls and beaches! Some of the must-sees are Kbal Chhay Waterfalls, Wat Leu Temple and the Golden Lions Roundabout. Prepare to be amazed by the stunning views and cultural richness!
Arts & culture
Dive into the local culture by visiting art galleries and cultural centers. Engage with local artists and discover the vibrant Cambodian artistic expression. Don't miss out on traditional dance performances and local music shows!
Food & nightlife
Get ready for a culinary adventure! Sihanoukville offers a wide range of dining options, from fresh seafood to authentic Khmer cuisine. As the sun sets, the city comes alive with bustling bars and vibrant nightclubs, perfect for a night of fun!
Shopping & fashion
Explore local markets and boutique shops for unique souvenirs and fashion finds. From handmade crafts to stylish clothing, you'll find something special to remember your trip. Don't forget to bargain for the best deals!
Nearby getaways
Looking for a quick escape? Explore nearby islands like Koh Rong and Koh Rong Sanloem for pristine beaches and lush landscapes. These tropical paradises offer a perfect getaway from the city, with opportunities for snorkeling, diving, and relaxation.
No matter your interest – be it art, food, nightlife, or nature – Sihanoukville Province has something for everyone. And the best part? Many events and attractions refresh throughout the year, so there’s always something new to experience each visit.
Sihanoukville Province Weather
Weather in Sihanoukville Province
Sat, Apr 11
25%
31° 26°
25%
Sun, Apr 12
35%
31° 27°
35%
Mon, Apr 13
35%
31° 27°
35%
Tue, Apr 14
40%
31° 27°
40%
Wed, Apr 15
45%
31° 27°
45%
Thu, Apr 16
45%
31° 28°
45%
Fri, Apr 17
35%
31° 27°
35%
Here’s a quick look at the weather you can expect, plus this week’s forecast:
Seasons: Sihanoukville experiences a tropical monsoon climate with two main seasons: a wet season from May to October, characterized by high humidity, heavy rainfall, and temperatures ranging from 25°C to 35°C (77°F to 95°F), and a dry season from November to April, featuring lower humidity, less frequent rainfall, and temperatures between 24°C and 32°C (75°F to 90°F). There isn't a distinct spring, autumn, or winter season.
Rain: Sihanoukville experiences rainfall primarily during the wet season, from May to October, with the highest probability of rain in this forecast. Although rainfall can be heavy, it usually doesn't cause significant travel disruptions, however keep in mind that heavy downpours may lead to localized flooding.
This week's forecast: This week in Sihanoukville Province, expect daily maximum temperatures of 31°C (87.8°F) and minimum temperatures ranging from 26.2°C (79.16°F) to 27.5°C (81.5°F). The forecast indicates a moderate to high chance of rain throughout the week, with isolated and strong thunderstorms expected on some days.
(We update the weather forecast weekly so you know what to expect during your travel week. Always check a day or two before your flight for the most current conditions.)
Frequently Asked Questions About Flights to Sihanoukville International
(Have more questions?) Feel free to reach out or check our comprehensive Sihanoukville International travel guide. We’re here to help make your flight to Sihanoukville International (and the trip itself) as smooth as possible.
Pro Tips for Finding Cheap Flights to Sihanoukville International
Finally, to wrap up, here’s a cheat sheet of pro tips that experienced travelers use to save on Sihanoukville International flights:
Fly During the Off-Season: Sihanoukville is hot year-round, but you'll find fewer tourists and lower prices during the rainy season (May to October). Just pack an umbrella and embrace the tropical showers!
Be Flexible with Your Dates: Can't decide when to visit Sihanoukville? Use the 'flexible dates' search option on flight comparison websites to see which days offer the cheapest fares. You might be surprised!
Consider Alternative Airports: Sometimes flying into a nearby airport and taking a bus or train to Sihanoukville can be significantly cheaper than flying directly. It's worth checking out your options!
Book in Advance (But Not Too Early): While last-minute deals are rare, booking too far in advance can also mean higher prices. Aim to book your flights a few months ahead of your travel date for the sweet spot.
Mix and Match Airlines: Don't be afraid to fly to Sihanoukville with one airline and return with another. Sometimes, booking two one-way tickets can be cheaper than a round-trip.
Embrace Layovers: Direct flights are convenient, but flights with layovers are often cheaper. If you're not in a rush, a longer journey could save you some serious cash for enjoying the beaches.
Set Up Price Alerts on RatePunk: Let RatePunk do the work for you! Set up price alerts for your desired route to Sihanoukville, and you'll be notified when prices drop. It's like having a personal flight deal hunter!
Look for Package Deals: Consider booking your flights and accommodation together as a package deal. This can often result in significant savings compared to booking everything separately, leaving you with more money to spend on seafood.
Clear Your Browser Cookies: Airlines and booking websites sometimes track your searches and raise prices accordingly. Clear your browser cookies or use incognito mode to see if you can find a better deal.
Check Budget Airlines: Budget airlines often offer incredibly low fares, but be sure to factor in extra costs for baggage, seat selection, and meals. Even with the extras, they can still be a bargain!
By keeping these tips in mind, you’ll be well-equipped to find the cheapest flights to Sihanoukville International and make the most of your travel budget. After all, the more you save on your flight, the more you can spend on a Broadway show, a nice meal, or an extra tour in Sihanoukville International! 🎉✈️