$599 Cheap British Airways flights Phoenix (PHX) to Kos (KGS)

View $599 flight on Wed, Oct 22, 2025Opens in a new window

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$599 Cheap British Airways flights Phoenix (PHX) to Kos (KGS)

Prices were available within the past 7 days and start at $599 for one-way flights and $1,250 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Fri, Sep 26 - Sat, Oct 4
PHX
Phoenix
KGS
Kos
$1,250 Roundtrip, found 1 day ago
$1,250
Roundtrip
found 1 day ago
Select British Airways flight, departing Fri, Sep 26 from Phoenix to Kos, returning Sat, Oct 4, priced at $1,250 found 1 day ago
Flights from Phoenix (PHX) to Kos (KGS)
Origin airport
Sky Harbor Intl.
Destination airport
Kos Island Intl.
Distance
6914 mi

Frequently asked questions

How much is a British Airways flight from Sky Harbor Intl. Airport (PHX) to Kos Island Intl. Airport (KGS)?
Apply the "Price (lowest to highest)" filter on Expedia to look for cheap British Airways return flights from $1,250 from PHX to KGS. Affordable one-way tickets from $599 are available too.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from PHX to KGS with British Airways?
Look for return or one-way flights to Kos in December or February. You could find cheaper fares with British Airways during these off-season months.
What is the cheapest time to book flights from Sky Harbor Intl. Airport (PHX) to Kos Island Intl. Airport (KGS) with British Airways?
To get affordable flights from PHX to KGS with British Airways, start your search about one month before your planned departure. You can save 17% when you book your international tickets 18 to 29 days ahead instead of booking four to five months in advance. Another good tip? Booking on Sunday offers average savings of 17% compared to Friday (the most expensive day).**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does British Airways fly nonstop from Sky Harbor Intl. Airport (PHX) to Kos Island Intl. Airport (KGS)?
To find out if there's a direct journey from PHX to KGS with British Airways or other airlines, use our "Nonstop" filter when browsing for flights.
What is the earliest British Airways flight from PHX to KGS?
Sort your results by "Morning" and "Early Morning" to browse the earliest departures from PHX to KGS. Jetting off early means you're 20% less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does British Airways fly into in Kos?
British Airways flights from Sky Harbor Intl. Airport (PHX) to Kos touch down at Kos Island Intl. Airport (KGS). This is the main entry point here.
What kind of luggage can I take on a British Airways flight from Sky Harbor Intl. Airport (PHX) to Kos Island Intl. Airport (KGS)?
British Airways allows you to bring 1 checked-in bag weighing up to 50 lb with maximum dimensions of 29 inches x 15 inches x 16 inches on standard economy flights from PHX to KGS. Additionally, you can take 2 cabin bags in the cabin. This carry-on luggage must not exceed 19 inches x 9 inches x 17 inches and weigh no more than 50 lb. Baggage policies can differ depending on your fare type and cabin class, so double-check your booking or British Airways's website to avoid paying unexpected fees at the airport.
Why fly with British Airways from PHX to KGS?
Offering a 4-star airline rating and top-tier customer service, British Airways is the leading choice for many passengers flying from PHX to KGS. What's more, if you're a British Airways Executive Club and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be put toward future travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my British Airways flight from Sky Harbor Intl. Airport (PHX) to Kos Island Intl. Airport (KGS)?
Depending on your fare type, a fee will generally apply if you modify or cancel your booking more than 24 hours after it's been confirmed. To find flexible fares, select our "No cancel fee" or "Changes included" filter while looking for flights. For more details on changing or canceling your reservation, visit "Trips," select your flight and tick "Manage Booking."

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*Available to One Key members.