$505 Cheap Flights from Samui Intl. Airport (USM) to Phoenix (PHX)

View $505 flight on Sun, Nov 23, 2025Opens in a new window

Popular airlines from Samui Intl. Airport (USM) to Phoenix Sky Harbor Intl. Airport (PHX)

Cheap Flights from Samui Intl. Airport to Phoenix (USM-PHX)

Prices were available within the past 7 days and start at $505 for one-way flights and $1,705 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Cathay Pacific
Tue, Sep 9 - Wed, Sep 10
USM
Koh Samui
PHX
Phoenix
$1,705 Roundtrip, found 2 days ago
$1,705
Roundtrip
found 2 days ago
Select Cathay Pacific flight, departing Tue, Sep 9 from Koh Samui to Phoenix, returning Wed, Sep 10, priced at $1,705 found 2 days ago
Cathay Pacific
Tue, Sep 9 - Wed, Sep 10
USM
Koh Samui
PHX
Phoenix
$1,712 Roundtrip, found 2 days ago
$1,712
Roundtrip
found 2 days ago
Select Cathay Pacific flight, departing Tue, Sep 9 from Koh Samui to Phoenix, returning Wed, Sep 10, priced at $1,712 found 2 days ago
Cathay Pacific
Tue, Sep 9 - Wed, Sep 10
USM
Koh Samui
PHX
Phoenix
$1,714 Roundtrip, found 2 days ago
$1,714
Roundtrip
found 2 days ago
Select Cathay Pacific flight, departing Tue, Sep 9 from Koh Samui to Phoenix, returning Wed, Sep 10, priced at $1,714 found 2 days ago
Cathay Pacific
Tue, Sep 9 - Wed, Sep 10
USM
Koh Samui
PHX
Phoenix
$1,721 Roundtrip, found 2 days ago
$1,721
Roundtrip
found 2 days ago
Select Cathay Pacific flight, departing Tue, Sep 9 from Koh Samui to Phoenix, returning Wed, Sep 10, priced at $1,721 found 2 days ago
Cathay Pacific
Tue, Sep 9 - Wed, Sep 10
USM
Koh Samui
PHX
Phoenix
$1,725 Roundtrip, found 2 days ago
$1,725
Roundtrip
found 2 days ago
Select Cathay Pacific flight, departing Tue, Sep 9 from Koh Samui to Phoenix, returning Wed, Sep 10, priced at $1,725 found 2 days ago
Cathay Pacific
Tue, Sep 9 - Wed, Sep 10
USM
Koh Samui
PHX
Phoenix
$1,726 Roundtrip, found 2 days ago
$1,726
Roundtrip
found 2 days ago
Select Cathay Pacific flight, departing Tue, Sep 9 from Koh Samui to Phoenix, returning Wed, Sep 10, priced at $1,726 found 2 days ago
Cathay Pacific
Tue, Sep 9 - Wed, Sep 10
USM
Koh Samui
PHX
Phoenix
$1,732 Roundtrip, found 2 days ago
$1,732
Roundtrip
found 2 days ago
Select Cathay Pacific flight, departing Tue, Sep 9 from Koh Samui to Phoenix, returning Wed, Sep 10, priced at $1,732 found 2 days ago
Cathay Pacific
Tue, Sep 9 - Wed, Sep 10
USM
Koh Samui
PHX
Phoenix
$1,733 Roundtrip, found 2 days ago
$1,733
Roundtrip
found 2 days ago
Select Cathay Pacific flight, departing Tue, Sep 9 from Koh Samui to Phoenix, returning Wed, Sep 10, priced at $1,733 found 2 days ago
Cathay Pacific
Tue, Sep 9 - Wed, Sep 10
USM
Koh Samui
PHX
Phoenix
$1,734 Roundtrip, found 2 days ago
$1,734
Roundtrip
found 2 days ago
Select Cathay Pacific flight, departing Tue, Sep 9 from Koh Samui to Phoenix, returning Wed, Sep 10, priced at $1,734 found 2 days ago
British Airways
Tue, Sep 9 - Wed, Sep 10
USM
Koh Samui
PHX
Phoenix
$2,613 Roundtrip, found 2 days ago
$2,613
Roundtrip
found 2 days ago
Select British Airways flight, departing Tue, Sep 9 from Koh Samui to Phoenix, returning Wed, Sep 10, priced at $2,613 found 2 days ago
Flights from Samui Intl. Airport (USM) to Phoenix (PHX)
Origin airport
Samui Intl. Airport
Destination airport
Sky Harbor Intl.
Roundtrip price
$1,705
Distance
8794 mi

Samui Intl. Airport to Phoenix Flights

The cheapest times to fly from Samui Intl. Airport to Phoenix

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 Samui Intl. Airport to Phoenix are during the month of September. You can find some of the cheapest flights from Samui Intl. Airport to Phoenix with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Samui Intl. Airport to Phoenix

Sunday is one of the best days to book for cheap flights from Samui Intl. Airport to Phoenix: 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 Samui Intl. Airport to Phoenix

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 Samui Intl. Airport to Phoenix in 2025. You can also book with separate airlines for your outbound and return journeys, from $505 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 Samui Intl. Airport to Phoenix 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 Samui Intl. Airport to Phoenix 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.

 

Frequently asked questions

How much does a flight from Ko Samui Airport (USM) to Sky Harbor Intl. Airport (PHX) cost?
Grab a cheap one-way flight from $505 or cheap return flight from $1,705 from Ko Samui Airport (USM) to Sky Harbor Intl. Airport (PHX) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Ko Samui Airport (USM) to Sky Harbor Intl. Airport (PHX)?
Planning your trip for September is a good way to save, as it's the cheapest month for flights between USM and PHX. You'll usually find the lowest prices during off-peak months.
What is the cheapest airline that flies from Ko Samui Airport (USM) to Sky Harbor Intl. Airport (PHX)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest USM to PHX flight.
How many flights per day from Ko Samui Airport (USM) to Sky Harbor Intl. Airport (PHX)?
There aren't any daily nonstop flights from Ko Samui Airport (USM) to Sky Harbor Intl. Airport (PHX). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be on your way before you know it.
What day of the week has the most flights from USM to PHX?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can change depending on a number of factors, including the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Ko Samui Airport (USM) to Sky Harbor Intl. Airport (PHX)?
To avoid possible delays on the Ko Samui Airport (USM) to Sky Harbor Intl. Airport (PHX) route, aim to fly before 3 PM. Departures after this hour have a 22% higher chance of being canceled.**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 Ko Samui Airport (USM) to Sky Harbor Intl. Airport (PHX) last-minute?
Waiting until just before your trip to book your flight from USM to PHX generally means paying more. While you might find some last-minute discounts, there's no guarantee. Allow some flexibility in your schedule for the best chance of scoring a bargain.
Is it cheaper to book an USM to PHX flight and hotel package?
Booking an USM to PHX flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Select from our wide range of hotels and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Ko Samui Airport (USM) to Sky Harbor Intl. Airport (PHX)?
In most instances, you can reschedule or cancel your USM to PHX flight. However, there may be additional charges, especially if you booked over 24 hours ago. Check your itinerary for the airline's fees and policies on flight changes, or if you want further information, head to our Customer Service portal.

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*Available to One Key members.