Title:  Cheap Flights from Boston (BOS) to Kos (KGS) - Expedia.ca

  

![Kos featuring a castle and a coastal town](https://images.trvl-media.com/place/1804/71d210e5-8360-4faf-8e0e-489f0841a4ac.jpg?impolicy=fcrop&w=1200&h=500&q=medium)

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# Cheap Flights from Boston (BOS) to Kos (KGS)

-   [Roundtrip](?flightType=roundtrip)
-   [One-way](?flightType=oneway)
-   [Multi-city](?flightType=multicity)

### Travellers

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InfantsYounger than 2

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## Popular airlines from Logan International Airport (BOS) to Kos (KGS-Kos Island Intl.)

-   ![Swiss International Air Lines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LX.svg)
    
    Swiss International Air Lines
    
    [](https://www.expedia.ca/Flights-Search?leg1=from:bos,to:kgs,departure:01/11/2025TANYT&leg2=from:kgs,to:bos,departure:08/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LX"}}])
-   ![Lufthansa](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LH.svg)
    
    Lufthansa
    
    [](https://www.expedia.ca/Flights-Search?leg1=from:bos,to:kgs,departure:01/11/2025TANYT&leg2=from:kgs,to:bos,departure:08/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LH"}}])
-   ![British Airways](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_BA.svg)
    
    British Airways
    
    [](https://www.expedia.ca/Flights-Search?leg1=from:bos,to:kgs,departure:01/11/2025TANYT&leg2=from:kgs,to:bos,departure:08/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BA"}}])
-   ![Brussels Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_SN.svg)
    
    Brussels Airlines
    
    [](https://www.expedia.ca/Flights-Search?leg1=from:bos,to:kgs,departure:01/11/2025TANYT&leg2=from:kgs,to:bos,departure:08/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"SN"}}])

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Flight from Boston to Kos (BOS - KGS) route information

| Origin airport | Logan Intl. |
| --- | --- |
| Destination airport | Kos Island Intl. |
| Distance | 7884 km |

## Boston to Kos Flights

**The easy way to book your flights from Boston to Kos** 

With Expedia, it’s simple to find and book flights to Kos from Boston whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from airlines that cover this route. There are nonstop flights to Kos Island Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Boston to Kos today, tomorrow, or this week.  

**Save dollars with cheap flights from Logan Intl., BOS to Kos Island Intl., KGS** 

Sort your search results by price to find great deals on your flight from Boston to Kos—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Kos from Boston currently is just rising to .  

Here are more money-saving tips: 

-   Fly in when flight prices are normally at their lowest 
-   Book about a month to 6 weeks before you travel for the best prices to Kos  
-   Avoid peak season and weekends when flights can cost more
-   Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
-   One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

**Reasons to choose Expedia for your flight to Kos from Boston** 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Kos with Expedia today.

## Frequently asked questions

### How much is a flight from Logan Intl. Airport to Kos Airport?

> Within the past 7 days on Expedia, for flights departing within the next year, the lowest price advertised for a round-trip journey from BOS to Kos Island Intl. Airport (KGS) was . Cheap fares don't last forever, so book yours today. Prices and availability are subject to change. Additional terms apply.

### Do I need to pay a cancellation fee if I cancel my flight from Logan Intl. Airport to Kos Island Intl. Airport (KGS)?

> Every air carrier has its own terms and conditions. If you do decide to cancel, follow the easy instructions on our [Customer Service Portal](https://www.expedia.ca/helpcenter).

### How do I find cheap flights from BOS to KGS that have flexible change policies?

> Flights from Logan Intl. Airport (BOS) to Kos Island Intl. Airport (KGS) offering flexible change policies are available from several airlines. Simply use our "No change fees" filter when searching. You'll only need to pay the difference in ticket price, with no added fees to worry about.

### How far is the flight from Logan Intl. Airport (BOS) to Kos Airport?

> With around 7,900 kilometres separating Boston and Kos, your flight will be a long one. Pack wisely and make your trip more comfortable. Things like an eye mask and a good travel pillow can make all the difference.

### Which airlines fly direct from BOS to KGS?

> Unfortunately, there aren't any airlines that fly directly between Logan Intl. Airport and KGS. You'll have to book a flight with at least one stop.

### Are Logan Intl. Airport (BOS) to Kos Airport flight tickets cheaper when they're purchased at the last minute?

> Flight prices are always on the move, so there are no guarantees. While last-minute deals between BOS and Kos Island Intl. Airport (KGS) are possible, it's also a good idea to monitor prices well before you fly. In fact, some airlines advertise their prices up to a year prior to the departure date. Expedia is constantly updating the biggest airfare bargains around, so check back often and be ready to pounce when prices drop.

## Explore a world of travel with Expedia

-   Flights

### Flights

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\*Available to Expedia members.