Cheap Flights from Sihanoukville (KOS) to Hanoi (HAN)

Popular airlines from Sihanoukville (KOS) to Noi Bai Intl. Airport (HAN)

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Frequently asked questions

How much does a flight from Sihanoukville Airport (KOS) to Noi Bai Intl. Airport (HAN) cost?
Get a cheap one-way flight or cheap return flight from Sihanoukville Airport (KOS) to Noi Bai Intl. Airport (HAN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Sihanoukville Airport (KOS) to Noi Bai Intl. Airport (HAN)?
is the least expensive month to fly from KOS to HAN. Planning your trip for the off-season is often the key to landing a great deal.
What is the cheapest airline that flies from Sihanoukville Airport (KOS) to Noi Bai Intl. Airport (HAN)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll take you from KOS to HAN. Then, sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Sihanoukville Airport (KOS) to Noi Bai Intl. Airport (HAN)?
You'll have to book a flight with a layover when traveling from Sihanoukville Airport (KOS) to Noi Bai Intl. Airport (HAN). Direct flights don't operate daily on this route. However, just filter your search to include one or more stops to find the best option for your trip.
What day of the week has the most flights from KOS to HAN?
Usually you'll have the most choice when it comes to flights on a Friday. Tuesdays are often the quietest.* But this can vary depending on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Sihanoukville Airport (KOS) to Noi Bai Intl. Airport (HAN)?
Opt for a flight from Sihanoukville Airport (KOS) to Noi Bai Intl. Airport (HAN) that takes off before 3 PM to reduce the risk of cancellations and delays. Departures later than this have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Sihanoukville Airport (KOS) to Noi Bai Intl. Airport (HAN) last-minute?
Holding off until right before your break to book a ticket from KOS to HAN generally means paying more. While it's possible to find some last-minute discounts, they aren't always guaranteed. Allow some flexibility in your schedule for a better chance of scoring a bargain.
Is it cheaper to book a KOS to HAN flight and hotel package?
You'll generally save money by booking a KOS to HAN flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. Once you've chosen your ideal flights and accommodations, consider adding extras such as car rentals, tours and activities.
Can I cancel or change the date of my flight from Sihanoukville Airport (KOS) to Noi Bai Intl. Airport (HAN)?
If you booked your KOS to HAN flight in the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for further details.

Travel information

Origin airport
Sihanoukville
Destination airport
Noi Bai Intl.
Distance
748 mi

Book with confidence

Sihanoukville to Hanoi Flights

The cheapest times to fly from Sihanoukville to Hanoi

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Sihanoukville to Hanoi are during the month of . You can find some of the cheapest flights from Sihanoukville to Hanoi with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Sihanoukville to Hanoi

Sunday is one of the best days to book for cheap flights from Sihanoukville to Hanoi: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Sihanoukville to Hanoi

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Sihanoukville to Hanoi in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Sihanoukville to Hanoi flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Sihanoukville to Hanoi airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Sihanoukville to Hanoi Flights

Explore a world of travel with Expedia

*Available to One Key members.