$361 Cheap Flights from Boston (BOS) to Cagliari (CAG)

View $361 flight on Tue, Oct 14, 2025Opens in a new window

Popular airlines from Logan International Airport (BOS) to Elmas Airport (CAG)

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Cheap Flights from Boston to Cagliari (BOS-CAG)

Prices were available within the past 7 days and start at $361 for one-way flights and $424 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Tue, Oct 14 - Mon, Oct 20
BOS
Boston
CAG
Cagliari
$424 Roundtrip, found 3 days ago
$424
Roundtrip
found 3 days ago
Select Air Canada flight, departing Tue, Oct 14 from Boston to Cagliari, returning Mon, Oct 20, priced at $424 found 3 days ago
Air Canada
Tue, Oct 14 - Mon, Oct 20
BOS
Boston
CAG
Cagliari
$430 Roundtrip, found 3 days ago
$430
Roundtrip
found 3 days ago
Select Air Canada flight, departing Tue, Oct 14 from Boston to Cagliari, returning Mon, Oct 20, priced at $430 found 3 days ago
Air Canada
Tue, Oct 14 - Mon, Oct 20
BOS
Boston
CAG
Cagliari
$441 Roundtrip, found 3 days ago
$441
Roundtrip
found 3 days ago
Select Air Canada flight, departing Tue, Oct 14 from Boston to Cagliari, returning Mon, Oct 20, priced at $441 found 3 days ago
Air Canada
Tue, Oct 14 - Mon, Oct 20
BOS
Boston
CAG
Cagliari
$448 Roundtrip, found 3 days ago
$448
Roundtrip
found 3 days ago
Select Air Canada flight, departing Tue, Oct 14 from Boston to Cagliari, returning Mon, Oct 20, priced at $448 found 3 days ago
Air Canada
Tue, Oct 14 - Mon, Oct 20
BOS
Boston
CAG
Cagliari
$455 Roundtrip, found 3 days ago
$455
Roundtrip
found 3 days ago
Select Air Canada flight, departing Tue, Oct 14 from Boston to Cagliari, returning Mon, Oct 20, priced at $455 found 3 days ago
Air Canada
Sat, Aug 16 - Thu, Aug 28
BOS
Boston
CAG
Cagliari
$465 Roundtrip, found 9 hours ago
$465
Roundtrip
found 9 hours ago
Select Air Canada flight, departing Sat, Aug 16 from Boston to Cagliari, returning Thu, Aug 28, priced at $465 found 9 hours ago
United
Tue, Oct 14 - Mon, Oct 20
BOS
Boston
CAG
Cagliari
$496 Roundtrip, found 3 days ago
$496
Roundtrip
found 3 days ago
Select United flight, departing Tue, Oct 14 from Boston to Cagliari, returning Mon, Oct 20, priced at $496 found 3 days ago
Lufthansa
Sun, Aug 10 - Mon, Aug 25
BOS
Boston
CAG
Cagliari
$525 Roundtrip, found 11 hours ago
$525
Roundtrip
found 11 hours ago
Select Lufthansa flight, departing Sun, Aug 10 from Boston to Cagliari, returning Mon, Aug 25, priced at $525 found 11 hours ago
Swiss International Air Lines
Mon, Oct 13 - Wed, Oct 22
BOS
Boston
CAG
Cagliari
$529 Roundtrip, found 2 days ago
$529
Roundtrip
found 2 days ago
Select Swiss International Air Lines flight, departing Mon, Oct 13 from Boston to Cagliari, returning Wed, Oct 22, priced at $529 found 2 days ago
Iberia
Thu, Jan 29 - Thu, Feb 5
BOS
Boston
CAG
Cagliari
$530 Roundtrip, found 2 days ago
$530
Roundtrip
found 2 days ago
Select Iberia flight, departing Thu, Jan 29 from Boston to Cagliari, returning Thu, Feb 5, priced at $530 found 2 days ago

Alternative airports near Cagliari

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Elmas CAG. Cheapest and Closest option available. Average driving time to city center is 9 minutes. Flights from $809
CAG
Elmas
CheapestClosest
Average driving time to city center9 min
Flights from $809
Flights from Boston (BOS) to Cagliari (CAG)
Origin airport
Logan Intl.
Destination airport
Elmas
Airlines serving
Air Canada, Air France, Austrian Airlines, British Airways, Delta, Iberia, KLM, Lufthansa, Swiss International Air Lines
Roundtrip price
$423
Distance
4030 mi

Boston to Cagliari Flights

The cheapest times to fly from Boston to Cagliari

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

 

The best time to book a flight from Boston to Cagliari

Sunday is one of the best days to book for cheap flights from Boston to Cagliari: 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 Boston to Cagliari

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 Boston to Cagliari in 2025. You can also book with separate airlines for your outbound and return journeys, from $361 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 Boston to Cagliari 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 Boston to Cagliari 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 Logan Intl. Airport (BOS) to Elmas Airport (CAG) cost?
Discover the latest flight deals from BOS to CAG by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from BOS to CAG?
The cheapest flights from BOS to CAG are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from BOS to CAG?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from BOS to CAG. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Logan Intl. Airport (BOS) to Elmas Airport (CAG)?
There are no daily direct flights available from Logan Intl. Airport (BOS) to Elmas Airport (CAG). But you can book flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be soaring above the clouds in no time at all.
What day of the week has the most flights from BOS to CAG?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Logan Intl. Airport (BOS) to Elmas Airport (CAG)?
To reach Elmas Airport (CAG) on schedule, select a flight that leaves Logan Intl. Airport (BOS) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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 Logan Intl. Airport (BOS) to Elmas Airport (CAG) last-minute?
Last-minute fares from BOS to CAG are usually more expensive. To secure the cheapest rates, start looking for flights early. That being said, if you're flexible with your travel plans, it's possible to score a cheap ticket right before your trip.
Is it cheaper to book a BOS to CAG flight and hotel package?
You'll generally save money by securing a BOS to CAG flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. After choosing your preferred flights and accommodations, consider other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Logan Intl. Airport (BOS) to Elmas Airport (CAG)?
If you reserved your BOS to CAG flight in the last 24 hours, you may be able to modify or cancel it without any 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 more details.

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