BOS - CAG

$322 Find Cheap Flights from Boston to Cagliari - Compare and Save

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 9/16. 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
$720
Multiple Airlines
Fri 10/16Fri 10/23
BOS - CAG • 3 stops
Cheapest one-way
$322
Multiple Airlines
Wed 9/16
BOS - CAG • 3 stops
Top airlines
Cheapest • from $724 (round-trip)
Best reviews • 7.8 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
Cheapest • Avg $729 (round-trip)
Shortest trip • 11h 54m (one-way)
Insights
Insights
Insights
Insights
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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

Fri, Oct 16 - Fri, Oct 23
Multiple Airlines Logo
5:50 pm - 8:05 am
BOS
-
CAG
32h 15m
3 stops
Multiple Airlines Logo
10:35 am - 3:35 pm
CAG
-
BOS
35h 00m
2 stops
$720Multiple Airlines
Sun, Aug 2 - Tue, Aug 18
Lufthansa Logo
9:25 am - 5:45 pm
BOS
-
CAG
26h 20m
2 stops
Lufthansa Logo
6:35 pm - 5:40 pm
CAG
-
BOS
29h 05m
1 stop
$724Lufthansa
Sun, Aug 2 - Tue, Aug 18
Lufthansa Logo
8:05 pm - 5:45 pm
BOS
-
CAG
15h 40m
1 stop
Lufthansa Logo
6:35 pm - 5:40 pm
CAG
-
BOS
29h 05m
1 stop
$726Lufthansa
Sun, Aug 2 - Tue, Aug 18
Multiple Airlines Logo
5:05 pm - 10:45 pm
BOS
-
CAG
23h 40m
2 stops
Multiple Airlines Logo
8:50 am - 1:40 pm
CAG
-
BOS
34h 50m
2 stops
$732Multiple Airlines
Sun, Aug 2 - Tue, Aug 18
Multiple Airlines Logo
5:05 pm - 10:45 pm
BOS
-
CAG
23h 40m
2 stops
Multiple Airlines Logo
8:50 am - 1:40 pm
CAG
-
BOS
34h 50m
2 stops
$740Multiple Airlines
Sun, Aug 2 - Tue, Aug 18
Multiple Airlines Logo
5:05 pm - 10:45 pm
BOS
-
CAG
23h 40m
2 stops
Multiple Airlines Logo
8:50 am - 1:40 pm
CAG
-
BOS
34h 50m
2 stops
$742Multiple Airlines
Wed, Aug 5 - Wed, Aug 19
Multiple Airlines Logo
8:05 pm - 5:45 pm
BOS
-
CAG
15h 40m
1 stop
Multiple Airlines Logo
4:05 pm - 3:10 pm
CAG
-
BOS
29h 05m
1 stop
$745Multiple Airlines
Mon, Aug 10 - Tue, Aug 18
Multiple Airlines Logo
3:35 pm - 5:45 pm
BOS
-
CAG
20h 10m
2 stops
Multiple Airlines Logo
6:35 pm - 5:40 pm
CAG
-
BOS
29h 05m
1 stop
$750Multiple Airlines
Wed, Aug 5 - Wed, Aug 19
Multiple Airlines Logo
5:45 am - 6:10 pm
BOS
-
CAG
30h 25m
2 stops
Multiple Airlines Logo
4:05 pm - 3:10 pm
CAG
-
BOS
29h 05m
1 stop
$756Multiple Airlines
Tue, Aug 4 - Wed, Aug 19
Multiple Airlines Logo
3:35 pm - 6:10 pm
BOS
-
CAG
44h 35m
2 stops
Multiple Airlines Logo
4:05 pm - 3:10 pm
CAG
-
BOS
29h 05m
1 stop
$757Multiple Airlines
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 5 days.

In the past 5 days, the cheapest round-trip tickets from Boston to Cagliari were found on Lufthansa ($724) and SWISS ($783).

Good to know

Cheapest flight$322
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 5 days, the lowest price for a flight from Boston to Cagliari was $322 for a one-way ticket and $720 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 7.8, Delta is the most popular choice. SWISS is also a great choice for the route, with an average price of $574 and an overall rating of 7.5.

  • 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.
7.8
DeltaOverall score based on 8430 reviews
7.8Comfort
7.2Food
7.8Entertainment
8.1Boarding
8.5Crew
Airline reviews

Not really a “Delta” problem but worth mentioning: Boarding was a difficult process. TSA seemed understaffed and Pre-Check took longer than regular TSA. The supervisor was frazzled and yelled at travelers. Once through TSA, we had to put our carry-ons through another x-ray machine. Then queue up to board with both boarding pass and ID. Then, when we got to the stairs on the tarmac, we had to show our boarding pass again. Maybe this is just normal for Kona since the terminal is outdoors (but still a “secured” area).

6.0 GoodMary, Jun 2026
KOA - SEA
Read more Delta reviews

Not really a “Delta” problem but worth mentioning: Boarding was a difficult process. TSA seemed understaffed and Pre-Check took longer than regular TSA. The supervisor was frazzled and yelled at travelers. Once through TSA, we had to put our carry-ons through another x-ray machine. Then queue up to board with both boarding pass and ID. Then, when we got to the stairs on the tarmac, we had to show our boarding pass again. Maybe this is just normal for Kona since the terminal is outdoors (but still a “secured” area).

flight was delayed 4+ hours. there was really no understanding of why? weather? the last hour of delay was post boarding. pilot seat was broken. was that the real reason? nonetheless, long day of inconveniences.

Love me some Delta. One of the few airlines to recognize and support veterans. Easy boarding, flight was on time and arrived early and the flight attendants were excellent on this flight.

I thought the service was very nice and pleasant. There were no hiccups and no issues so overall a good experience.

Very good flight. Crew was great. No issues and we even arrived early.

The flights are constantly late anymore, and they won't even give you a glass of water on the plane. For years, they were able to do a service on this flight from Atlanta to Knoxville and Knoxville Atlanta now they say it's too short of a flight. You can't even get a quick drink of water.

Flight got canceled 4 times, missed my connecting flight due to delays, have to wait to go home tomorrow

Third flight in two months where the crew was not there. Comfort seating does not guarantee overhead bin space. Passengers with children are allowed on the plane first - if you are flying to and from Orlando, this means half the plane has boarded before you get on. And somehow all the bin space is taken up. 3 out of 5 flights have had issues with equipment or procedure. Some of these instances caused the flight to be delayed because of a "nuisance" light. One time it was a bag that had been brought on board but did not belong to anyone so we had to return to the gate. Last night we were told the "AC" on the plane doesn't work well and we're 10th for take off- because the crew was late - and that it will get cool when we're in the air. Not sure if this is usual, but I didn't think flight crew could jump seat in first class. Movie and TV selection has not been refreshed for several months- flying one to two round trips each month easily exhausts the list of content.

Great experience nice pilot very soft and easy landing and take off

It was a pleasant surprise to have complimentary Wi-Fi on the flight

3hr delay and then missed connecting flight with another 6hr wait at the airport before getting a continuation to my trip, worst trip ever in my 50+years of flight travel

Without a doubt, my “customer service” experience with SWISS was the worst of my life. Multiple disconnections in conversations, very cold and indifferent staff, failure to follow up with promised status updates — simply put, T. H. E. W. O. R. S. T. A full week later, and I am STILL waiting to hear from them. Never again for me with SWISS. Disgraceful.

The flight and all amenities were good to excellent. SWISS was awful to deal with. Every step of the way they nickel and dime you. Chose your seats? $14. Change your seats… No accounting for the prior payment. You get billed again. 17 pound restriction on overhead luggage, nonsense. It’s a weight in the plane whether it’s in the overhead or in check baggage. They just milk you for every cent they can and I resent it. The flight was excellent.

plenty of legspace, snacks, no pull face from flight attendants when asking for a wine. Also fast transfer ability at ZRH.

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.

The flight was cancelled, so why are you asking me how the flight was?

We sat in our seats on the tarmac for almost 3 hours due to storms. They would not give us water or a snack. We were to depart at 7.30 pm and it was about 10.30 when we took off. No dinner until much after that. Beef type noodle dish was terrible with about a teaspoon of beef in it. The breakfast sweet waffle with egg and sausage inside was horrible. An English muffin sandwich would have been much better. Food was the worst in all of our years of traveling the world.

Our screen kept turning off ...3 times...had to get crew attention to turn it on again

They messed up my seat so I didn’t get the one I paid for

Put me on standby; flight was late; missed my connecting flight; disaster

Flight attendants were fine, seats a bit hard but I use a cushion for extra support. The only issue was it was a bit too cool and I needed to ask for and received and extra blanket. I survived!!!

Very few things and/or people are excellent. It was very good.

Extremely uncomfortable seats. Experience was like a Frontier Airlines flight. Would not fly it again.

Very, very tight legroom. They must’ve jammed in an additional few rows of seat seating. Denver to Munich was the least legroom I’ve ever had on any flight, let alone a multi hour international journey. I will not take that flight again.

Never made it to Lufthansa because of Air Canadas negligence.

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

Information on your arrival and departure airports