BOS - CAG

$444 Find Cheap Flights from Boston to Cagliari

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Cagliari departing on 10/23. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Cagliari

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Cagliari, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Cagliari, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Boston to Cagliari (BOS-CAG)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Cagliari that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to Cagliari

Thu, Oct 23 - Sat, Nov 8
Multiple Airlines Logo
11:00 pm - 8:30 amBOS-CAG
27h 30m1 stop
Multiple Airlines Logo
1:20 pm - 8:55 pmCAG-BOS
13h 35m1 stop
$444Multiple Airlines
Find Deal
Thu, Oct 23 - Sat, Nov 8
Multiple Airlines Logo
11:00 pm - 7:30 amBOS-CAG
26h 30m2 stops
Multiple Airlines Logo
1:20 pm - 8:55 pmCAG-BOS
13h 35m1 stop
$490Multiple Airlines
Find Deal
Tue, Sep 23 - Mon, Sep 29
Lufthansa Logo
8:05 pm - 5:35 pmBOS-CAG
15h 30m1 stop
Lufthansa Logo
7:25 pm - 4:00 pmCAG-BOS
26h 35m1 stop
$693Lufthansa
Find Deal
Tue, Sep 23 - Sun, Sep 28
Lufthansa Logo
8:05 pm - 5:35 pmBOS-CAG
15h 30m1 stop
Lufthansa Logo
7:25 pm - 8:10 pmCAG-BOS
30h 45m1 stop
$704Lufthansa
Find Deal
Tue, Sep 23 - Tue, Sep 30
British Airways Logo
7:25 am - 7:20 pmBOS-CAG
29h 55m1 stop
British Airways Logo
2:55 pm - 10:45 pmCAG-BOS
13h 50m1 stop
$756British Airways
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Sun, Sep 21 - Mon, Sep 29
SWISS Logo
9:40 pm - 8:10 amBOS-CAG
28h 30m1 stop
SWISS Logo
9:10 pm - 3:25 pmCAG-BOS
24h 15m1 stop
$774SWISS
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Sun, Sep 21 - Tue, Sep 30
British Airways Logo
7:25 am - 7:10 pmBOS-CAG
29h 45m1 stop
British Airways Logo
2:55 pm - 5:10 pmCAG-BOS
32h 15m1 stop
$789British Airways
Find Deal
Fri, Oct 10 - Sun, Oct 19
Delta Logo
6:45 pm - 4:25 pmBOS-CAG
15h 40m1 stop
Delta Logo
5:05 pm - 4:30 pmCAG-BOS
29h 25m1 stop
$838Delta
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Sat, Sep 20 - Sat, Sep 27
Delta Logo
6:05 am - 4:25 pmBOS-CAG
28h 20m2 stops
Delta Logo
5:05 pm - 4:30 pmCAG-BOS
29h 25m1 stop
$875Delta
Find Deal
Sun, Sep 21 - Wed, Oct 1
SWISS Logo
9:40 pm - 8:10 amBOS-CAG
28h 30m1 stop
SWISS Logo
10:00 am - 3:25 pmCAG-BOS
11h 25m1 stop
$877SWISS
Find Deal

Everything you should know

Top airlines
Lufthansa
Cheapest • from $693 (round-trip)
SWISS
Best reviews • 7.6 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$444
Multiple Airlines
Thu 10/23Sat 11/8
BOS - CAG • 1 stop
Cheapest one-way
Multiple Airlines
Wed 9/17
BOS - CAG • multi-stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Cagliari!
Booking Insights

KAYAK's insights & trends for Boston to Cagliari flights

Get data-powered insights and trends into flights from Boston to Cagliari to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Boston to Cagliari?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Boston to Cagliari were found on Lufthansa ($693) and British Airways ($756).

Good to know

Cheapest flight$444
Most popular time to fly with an average 23% increase in price.
Flight from Boston to Cagliari

When to book flights from Boston to Cagliari

Are your dates flexible? Find out the best times to travel from Boston to Cagliari based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boston to Cagliari

  • What is the cheapest flight from Boston to Cagliari?

    In the last 3 days, the lowest price for a flight from Boston to Cagliari was $444 for a round-trip ticket.

  • Do I need a passport to fly between Boston and Cagliari?

    Yes, you’ll need a passport to travel to Cagliari from Boston.

  • Which airports will I be using when flying from Boston to Cagliari?

    Boston airport is called Boston Logan Intl and the only airport in Cagliari is Cagliari Elmas.

  • Which aircraft models fly most regularly from Boston to Cagliari?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Boston to Cagliari?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Boston and Cagliari, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Boston to Cagliari, SWISS or Vueling?

    The two airlines most popular with KAYAK users for flights from Boston to Cagliari are SWISS and Vueling. With an average price for the route of $662 and an overall rating of 7.6, SWISS is the most popular choice. Vueling is also a great choice for the route, with an average price of $700 and an overall rating of 7.1.

  • How does KAYAK find such low prices on flights from Boston to Cagliari?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to Cagliari.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Cagliari?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Cagliari from Boston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to Cagliari?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Cagliari with an airline and back to Boston with another airline. Booking your flights between Boston and CAG can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Cagliari?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Cagliari from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Boston to Cagliari

 
See real verified KAYAK customer reviews for airlines flying from Boston to Cagliari. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to Cagliari? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.6
SWISSOverall score based on 1737 reviews
6.8Entertainment
7.1Food
7.4Comfort
8.2Crew
7.7Boarding
Airline reviews

Food used to be better and comfort was not attainable after 5 hours everything starts hurting.

10.0 ExcellentAnonymous, Sep 2025DEN - ZRH
Read more SWISS reviews

Food used to be better and comfort was not attainable after 5 hours everything starts hurting.

horrible.. they cause such a problem and my daughter 14 years old was stranded in san francisco

I can’t even the whole trip was a catastrophe

Poor. Seats uncomfortable. No leg room. Hot and humid the whole trip. Food and staffs were ok.

The seats were so close together, when the man in front of me put his seat back, the screen in front of me was 9 inches from my face. There is no way to lean forward if I needed to pick something up. It was pretty uncomfortable for a ten hour flight. I was very surprised.

The food was good. Most the staff was pleasant. The flight would be drastically improved with WiFi on a long international flight.

The whole experience was positive. Crew very friendly and helpful. Very greedy with pre-seat allocation. Web site too complicated

When I needed to get my bag off of the plane so that I could take a train because the connection was 4 hours later, they took 2 hours to take my bag off making me take the train and miss my flight simultaneously. The seat size on the plane is too small for an average aged woman let alone a middle-aged man. It's unacceptable and I will not fly Boeing again.

They didn't give us Nothing to eat, come on..... 1 package of chips and a glass of soda won't do anything to the company

The cushion of the seats are old and very thin. The food can be more tasty or come with salt packages

Very fast boarding. Crew members were super nice. I loved it!

My luggage got lost and until today there is no solution to the problem. It's still missing

I am writing to demand an immediate refund and compensation for the absolutely unacceptable experience I endured with VUELING this week. On Monday, my flight was canceled, and despite this, I have yet to receive any refund. I was then taken to a hotel in a terrible location, where no food or even water was provided. The next day, I was rebooked on another flight, for which I had to personally cover an additional €50 in transportation costs—only to have that flight canceled as well. After waiting 10 hours, only 10 of us were offered alternative accommodations, while the rest were left stranded. We were forced to remain in this situation until Thursday without a single explanation or proper assistance. During this entire ordeal, we were only provided with breakfast and dinner, while being charged extra for drinks. This level of treatment is completely unacceptable. I expect an immediate refund for the cancelled flights and full compensation for the inconvenience, additional expenses, and the significant distress caused.

Only food for sale. Did not even offer water. No entertainment

Checking was efficient and quick. Adequate luggage space. Food for purchase only at high prices

Nothing. There was no flight. They cancelled the flight with no replacement about 9 hours before takeoff.

The flight was canceled at the last minute. Alternative flight was booked after 6 hours wait in Malaga airport.

Boarding with some sense and communication. It was a total free-for-all everyone coming all at once, no organisation of row numbers or priority.

Horrible, flight cancelled and had to come back the next day

Terrible. For clarity - this was the Level flight to Boston. Not Vueling. Would urge customers to avoid this airline. Gate agent was singularly unhelpful. He was argumentative, rude and went out of his way to ensure that every penny was collected for the baggage (which we realized given how early we were for flight we could have saved hundreds of dollars if we checked in on app). No onboard entertainment or WiFi. Half of the front section was empty because the seats did not work! Plane was falling apart.

I liked Quiet people around me. Crew could have helped people with overhead luggage so they aren't moving other peoples bags around and causing problems for people that had there bags there first

The flight and crew were good. The customer experience on the ground could have been better. We had to reschedule our flight because of a delay on the previous flight. The attendants working the desk in Washington DC were not helpful. They told us to scan a QR code and that would get us rebooked. Why couldn't two people standing at their computers do this? We had to chat with someone to get everything figured out. It was extremely confusing.

The plane was delayed by two hours in Chicago which led to us missing the next flight. Lufthansa rebooked the flight and booked us a hotel for the night in Frankfurt. The level of customer service and getting us taken care of was superb. The flight crew and the service on the ground was superb.

It was a short flight, everything was good with it.

Flight was delayed over one hour and I had to pay to select my seat, even though my booking supposedly had free selection (I paid extra for this at time of booking)

Stop charging for alcohol overseas flights and start taking cash again not everyone wants to pay with card if the person is bigger give him seat on the outside seats not the middle in between the people is common sense and mainly if you fly for Lufthansa provides the sam service and experience...

good entertainment package but rather small seats for business class

The male attendant has zero personality. It seemed like he was over worked or hated his job, not once did he smile or made any contact with the people on the plane. Strictly business and call it a day!

Booked Economy but it translated to economy light for Lufthansa so now we are stuck paying an extra $75 per person both ways for our checked bags. If I had known that, I would have never booked these tickets because it came out to be more than other options. The booking in the kayak side clearly says Economy and has a link to the inormation for Lufthansa which states Economy included a checked bag. Super annoyed about that.

The flight from Dulles to Munich was just okay. The seats were comfortable and extra foot room was noticeable in comfort plus. Disappointed in the booking in so much I requested an aisle seat and then was assigned a middle seat. The food was inedible. Movie choices were moderate. I usually fly Delta, but this WA flight was cheaper. Next time, I'll happily pay the extra to fly Delta.

Everything you need to know for your flight from Boston to Cagliari

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