BOS - CAG

$256 Find Cheap Flights from Boston to Cagliari

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Cagliari departing on 3/4. 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, 0 bags

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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Everything you should know

Cheapest round-trip
$528
SWISS
Tue 7/21Thu 8/20
BOS - CAG • 1 stop
Cheapest one-way
$242
Multiple Airlines
Wed 3/4
BOS - CAG • 2 stops
Top airlines
KLM
Cheapest • from $617 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Boston and Cagliari. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Munich (MUC)
Cheapest • Avg $700 (round-trip)
Paris (CDG)
Shortest trip • 11h 53m (one-way)
Insights
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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!
Flight Deals
Booking Insights
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

Tue, Jul 21 - Thu, Aug 20
SWISS Logo
9:40 pm - 7:40 am
BOS
-
CAG
28h 00m
1 stop
SWISS Logo
8:25 am - 3:10 pm
CAG
-
BOS
12h 45m
1 stop
$528SWISS
Sat, Apr 4 - Sat, Apr 18
Multiple Airlines Logo
3:35 pm - 5:45 pm
BOS
-
CAG
20h 10m
2 stops
Multiple Airlines Logo
9:10 am - 12:11 pm
CAG
-
BOS
33h 01m
2 stops
$583Multiple Airlines
Wed, Apr 29 - Thu, May 14
Multiple Airlines Logo
10:50 pm - 10:35 pm
BOS
-
CAG
17h 45m
1 stop
Multiple Airlines Logo
11:20 pm - 9:05 pm
CAG
-
BOS
27h 45m
1 stop
$592Multiple Airlines
Wed, Apr 29 - Wed, May 13
Multiple Airlines Logo
10:50 pm - 10:35 pm
BOS
-
CAG
17h 45m
1 stop
Multiple Airlines Logo
1:40 pm - 9:05 pm
CAG
-
BOS
13h 25m
1 stop
$600Multiple Airlines
Wed, Apr 29 - Sun, May 17
KLM Logo
4:35 pm - 4:25 pm
BOS
-
CAG
17h 50m
1 stop
KLM Logo
5:05 pm - 6:30 pm
CAG
-
BOS
31h 25m
1 stop
$617KLM
Wed, Apr 29 - Wed, May 13
Multiple Airlines Logo
10:50 pm - 10:10 pm
BOS
-
CAG
17h 20m
2 stops
Multiple Airlines Logo
1:40 pm - 9:05 pm
CAG
-
BOS
13h 25m
1 stop
$625Multiple Airlines
Wed, Apr 29 - Fri, May 15
Delta Logo
4:35 pm - 4:25 pm
BOS
-
CAG
17h 50m
1 stop
Delta Logo
5:05 pm - 8:03 pm
CAG
-
BOS
32h 58m
2 stops
$627Delta
Fri, May 1 - Wed, May 13
Multiple Airlines Logo
10:50 pm - 7:55 pm
BOS
-
CAG
15h 05m
1 stop
Multiple Airlines Logo
1:40 pm - 9:05 pm
CAG
-
BOS
13h 25m
1 stop
$635Multiple Airlines
Thu, Apr 2 - Wed, Apr 15
Multiple Airlines Logo
10:50 pm - 8:50 am
BOS
-
CAG
28h 00m
1 stop
Multiple Airlines Logo
10:45 pm - 9:05 pm
CAG
-
BOS
28h 20m
2 stops
$640Multiple Airlines
Sat, Apr 4 - Sat, Apr 18
KLM Logo
4:35 pm - 4:25 pm
BOS
-
CAG
17h 50m
1 stop
KLM Logo
5:05 pm - 1:13 pm
CAG
-
BOS
26h 08m
1 stop
$641KLM
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 KLM ($617) and Delta ($627).

Good to know

Cheapest flight$242
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 $242 for a one-way ticket and $583 for a round-trip.

  • 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?

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

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

    The two airlines most popular with KAYAK users for flights from Boston to Cagliari are Delta and SWISS. With an average price for the route of $1,062 and an overall rating of 7.9, Delta is the most popular choice. SWISS is also a great choice for the route, with an average price of $655 and an overall rating of 7.6.

  • 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 4 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.
7.9
DeltaOverall score based on 8239 reviews
8.1Boarding
7.8Entertainment
8.5Crew
7.9Comfort
7.2Food
Airline reviews

2+hrs delay without any reason provided and a cramped flight

2.0 MediocreYogendra Kumar, Feb 2026
DTW - MDT
Read more Delta reviews

2+hrs delay without any reason provided and a cramped flight

We waited an hour on the runway to get a gate in Orlando

Flight was delayed by 3-hours and their fix was… complimentary pretzels.

Flight was delayed due to crew being not on time

Flight crew issues delayed my flight by 2 1/2 hours. Causing me to miss my connection.

The staff on board and gate was nice - a welcome change from the usual. We also arrived early, which was a great benefit, given that it takes 30 minutes plus to get bags at SRQ.

The staff was frielndly. The plane was terrible, it was too small and should be decommissioned. There were no back seat screens at all. The only beverages we had a choice from was coffee, tea or water. The only bathroom in the back was behind the flight attendant's jump seat and wasn't working. And I literally felt like I was sitting on top of the guy next to me. It was terribly hot in the plane and we had to sit on the tarmac in Chicago for 1/2 hour due to congestion in Mpls. Wouldn't they have know that before they even boarded us so that we could have sat in comfort in the terminal?

Never got on it. Was re-routed through Detroit and am still in airports 12 hours later waiting for my connecting plane to arrive.

Delta has too many delays now days. It is 1:06 am now. I was supposed to land in Norfolk at 10:30 pm. I got re-booked through Detroit and I’m still in Detroit. I hope to be landed in Norfolk by 3am. I’ve been in airports for 12 hours as of right now. There is a weather delay now but most delays lately have been maintenance.

Very Very late. Subsequent flights left an hour before ours

The flight itself was fine, but due to a snow delay my connection to Lisbon was delayed by six hours. Despite this, Swiss Air still managed to lose my luggage. Not acceptable. Someone else on the flight also lost their luggage.

Bad experience overall. Crew did not provide food for our 2 year old (even though we specifically bought a child infant seat for her and literally bought another full price flight), which was unacceptable. And we had to pay $310 each way to carry our ski equipment even though they advertise it as something that is free. Tickets were purchased the same way as usual, but they told us we had Economy Light tickets (I never elected to have such seats). Just plain manipulation and false advertisment. Very disappointed overall about this airline.

The trip was great until my luggage was lost on transfer from United to Swiss. It took Swiss 3 days to get my luggage to me though it was located almost immediately.

Made us gate check carry ons Then didn’t get them on the plane. Service they used didn’t deliver our carry ons for more than a day Total mess

Horrible!! The WiFi was not working, the food was awful

We’ve never been more uncomfortable on a flight than we have on this particular one. The seats in front of us reclined so far back that when the person reclined their seat of broccoli, it almost hit me in the face and left me with literally no room to move that said I had to recline my seed in which made the person behind me upset. It seemed like the seats also would recline without even pressing the button in the armrest and would unrecline as well for that same reason, and it also seemed that some seats reclined more than others. The bottom cushions of the seat were so thin that even after one hour of an 11 hour flight, our tailbones were so sore. It seemed like an overall old airplane. It also didn’t have individual air vents and it was extremely hot the entire flight. Several passengers were commenting on how hot it was. The breakfast was some kind of flavorless triangle, puffy egg, laying in a watery bed of steamed peppers and onions and spinach. It was not appetizing at all. The flight crew was extremely nice so that was a nice thing this flight attendant. They let us try different types of Swiss sodas, which was really nice and the dinner was actually delicious but still overall given the other considerations. It was pretty much a miserable flight without basic seat comfort.

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.

All very smooth airside. Check-in counters were understaffed. The wait is too long. Only two, then three counters were open. Waiting time of 35 minutes is too long. Pls review your rota.

To complex. So many types of fare. This made the boarding a caos.

Needs faster boarding procedure. Not their fault but should still take into account indifferent flyers.

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.

Terrible. Both flights were significantly delayed, no luggage, made me check my small bag when many, many others had much larger carry-ons, not even a bottle of water . . . I will not fly Discover Airlines again.

I was deceived on the Kayak site expecting a ticket, but instead finding a "standby" reservation. When I tried to change the ticket, I paid almost twice the price of the original ticket. Then, the airline refused to give me the reserved seat I had chosen and paid for. I think I deserve a refund for this leg of my trip because I was doubly charged and did not receive what I had paid for. I put in a complaint with Lufthansa because the ticket was sold originally sold as a flight they listed. Someone here needs to take responsibility.

Excellent service; they helped me reschedule so I can fly in an earlier flight

I had a good comfortable seat. There was nearly an hour delay. There was an accident with the champagne, but I was well compensated. These things happen sometimes.

Service and food were excellent. Incredibly friendly and competent staff. Flight was delayed over and hour and I had to run between terminals to get my connecting flight.

Missed it by a couple minutes and couldn’t find an alternative flight so had to spend the night in DC and after much shuffling from 1 airline to another managed to get a United to Frankfurt.

There were only 2 toilets and one of them did not work in business class. We are not allowed to cross classes so had to wait in line to use the toilets!! The entertainment touch display was finicky and did not work all the time.

We missed our flight. There was not enough time built into the layover to get through immigration, customs, bagclaim, bag rechecking, and the long trip to another terminal and gate. Kayak really screwed up. We took the bus up to Wisconsin and then were picked up in Brookfield by private car. It was lucky we didnt miss the last bus out.

I tried both on line and by calling the Customer Service line to arrange for a special meal as i have food intolerances. I was under the impression from your service representative that I was successful. I was not. I cannot eat spicy foods and get very ill if i eat bell peppers. I could not eat either menu choice and no special meal was actually ordered. ( your representative tried to order it for a flight that did not have meal service!!! - found this out later). Your wonderful cabin crew managed to put together a fruit, salad, roll and cheese tray for me so I had something to eat. WHY WOULD YOU SERVE SPICY FOOD, WITH NO MILDER OPTION,ON AN INTERNATIONAL FLIGHT???

Crew was professional and great, flight was clean. However food was pathetic. I ordered a Hindu meal assuming no meat but they served chicken. Need to be very specific- Hindu meal should be categorize as Vegetarian - no meat or egg. Or it should be specific that we are serving meat.

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

Information on your arrival and departure airports