$1,157 Cheap Flights from Tucson (TUS) to Kos (KGS)

View $1,157 flight on Fri, Jun 19, 2026Opens in a new window

Popular airlines from Tucson International Airport (TUS) to Kos (KGS-Kos Island Intl.)

Cheap Flights from Tucson to Kos (TUS-KGS)

Prices were available within the past 7 days and start at $1,157 for one-way flights and $1,722 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Swiss International Air Lines
Fri, Jun 19 - Tue, Jun 30
TUS
Tucson
KGS
Kos
$1,722 Roundtrip, found 4 days ago
$1,722
Roundtrip
found 4 days ago
Select Swiss International Air Lines flight, departing Fri, Jun 19 from Tucson to Kos, returning Tue, Jun 30, priced at $1,722 found 4 days ago

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Flights from Tucson (TUS) to Kos (KGS)
Origin airport
Tucson Intl.
Destination airport
Kos Island Intl.
Roundtrip price
$1,722
Distance
6957 mi

Tucson to Kos Flights

The cheapest times to fly from Tucson to Kos

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 Tucson to Kos are during the month of June. You can find some of the cheapest flights from Tucson to Kos with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Tucson to Kos

Sunday is one of the best days to book for cheap flights from Tucson to Kos: 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 Tucson to Kos

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 Tucson to Kos in 2025. You can also book with separate airlines for your outbound and return journeys, from $1,157 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 Tucson to Kos 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 Tucson to Kos 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 Tucson Intl. Airport (TUS) to Kos Island Intl. Airport (KGS) cost?
Secure a cheap one-way flight from $1,157 or cheap return flight from $1,722 from Tucson Intl. Airport (TUS) to Kos Island Intl. Airport (KGS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Tucson Intl. Airport (TUS) to Kos Island Intl. Airport (KGS)?
The cheapest month to fly from TUS to KGS is June, when there's less demand. Off-peak season is usually when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Tucson Intl. Airport (TUS) to Kos Island Intl. Airport (KGS)?
To find the cheapest airline flying from TUS to KGS, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Tucson Intl. Airport (TUS) to Kos Island Intl. Airport (KGS)?
Nonstop flights from Tucson Intl. Airport (TUS) to Kos Island Intl. Airport (KGS) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from TUS to KGS?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can vary based on a range of factors, including the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Tucson Intl. Airport (TUS) to Kos Island Intl. Airport (KGS)?
Choose a flight from Tucson Intl. Airport (TUS) to Kos Island Intl. Airport (KGS) that takes off before 3 PM to reduce the risk of cancellations and delays. Later departures are on average 22% more likely to be 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 Tucson Intl. Airport (TUS) to Kos Island Intl. Airport (KGS) last-minute?
Last-minute bookings from TUS to KGS are usually more expensive. For the best prices, start searching for flights as soon as possible. That said, if you're flexible with your travel dates, it's possible to land a cheap fare just before your departure.
Is it cheaper to book a TUS to KGS flight and hotel package?
Compared with arranging flights and hotels separately, booking a TUS to KGS flight and hotel package with Expedia could result in significant savings. What's more, having it all in one place will take the stress out of planning your trip. Simply secure your flights and select from our extensive range of stays, then personalize your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Tucson Intl. Airport (TUS) to Kos Island Intl. Airport (KGS)?
In most instances, you can cancel or reschedule your TUS to KGS flight. However, there may be additional charges, especially if your booking was made over 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you want more information, visit our Customer Service portal.

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*Available to One Key members.