BOS - CAG

$317 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 10/4. 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
$534
LEVEL
Sun 9/20Wed 9/30
BOS - CAG • 1 stop
Cheapest one-way
$307
LEVEL
Sun 10/4
BOS - CAG • 1 stop
Top airlines
Cheapest • from $534 (round-trip)
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
Cheapest • Avg $700 (round-trip)
Shortest trip • 11h 42m (one-way)
Insights
Insights
Insights
Insights
Start a new search
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

Sun, Sep 20 - Wed, Sep 30
LEVEL Logo
11:50 pm - 8:50 am
BOS
-
CAG
27h 00m
1 stop
LEVEL Logo
1:40 pm - 9:15 pm
CAG
-
BOS
13h 35m
1 stop
$534LEVEL
Sun, Sep 20 - Wed, Sep 30
Multiple Airlines Logo
11:50 pm - 8:50 am
BOS
-
CAG
27h 00m
1 stop
Multiple Airlines Logo
1:40 pm - 9:15 pm
CAG
-
BOS
13h 35m
1 stop
$542Multiple Airlines
Sun, Sep 27 - Wed, Sep 30
Iberia Logo
11:50 pm - 8:50 am
BOS
-
CAG
27h 00m
1 stop
Iberia Logo
1:40 pm - 9:15 pm
CAG
-
BOS
13h 35m
1 stop
$578Iberia
Sun, Sep 20 - Wed, Sep 30
Multiple Airlines Logo
11:50 pm - 10:05 pm
BOS
-
CAG
16h 15m
2 stops
Multiple Airlines Logo
1:40 pm - 9:15 pm
CAG
-
BOS
13h 35m
1 stop
$616Multiple Airlines
Sun, Sep 20 - Wed, Sep 30
Multiple Airlines Logo
11:50 pm - 10:05 pm
BOS
-
CAG
16h 15m
2 stops
Multiple Airlines Logo
1:40 pm - 9:15 pm
CAG
-
BOS
13h 35m
1 stop
$622Multiple Airlines
Sun, Sep 20 - Wed, Sep 30
Multiple Airlines Logo
11:50 pm - 10:05 pm
BOS
-
CAG
16h 15m
2 stops
Multiple Airlines Logo
1:40 pm - 9:15 pm
CAG
-
BOS
13h 35m
1 stop
$639Multiple Airlines
Tue, Aug 11 - Fri, Aug 21
SWISS Logo
9:40 pm - 3:15 pm
BOS
-
CAG
11h 35m
1 stop
SWISS Logo
2:10 pm - 7:55 pm
CAG
-
BOS
11h 45m
1 stop
$672SWISS
Sat, Sep 19 - Sun, Sep 27
Multiple Airlines Logo
11:00 pm - 12:30 am
BOS
-
CAG
19h 30m
2 stops
Multiple Airlines Logo
8:55 am - 9:45 pm
CAG
-
BOS
18h 50m
2 stops
$681Multiple Airlines
Sun, Jul 12 - Wed, Jul 22
Iberia Logo
11:35 pm - 10:55 pm
BOS
-
CAG
17h 20m
1 stop
Iberia Logo
9:45 am - 9:05 pm
CAG
-
BOS
17h 20m
1 stop
$697Iberia
Sun, Jul 12 - Wed, Jul 22
LEVEL Logo
11:35 pm - 10:55 pm
BOS
-
CAG
17h 20m
1 stop
LEVEL Logo
1:40 pm - 9:05 pm
CAG
-
BOS
13h 25m
1 stop
$717LEVEL
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 LEVEL ($534) and Iberia ($578).

Good to know

Cheapest flight$307
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 $307 for a one-way ticket and $534 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 $634 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.
7.9
DeltaOverall score based on 8466 reviews
8.5Crew
8.1Boarding
7.9Comfort
7.8Entertainment
7.2Food
Airline reviews

The flight was operated by Latam. The aircraft had a technical issue and the flight was delayed for the next day. They grounded other passengers to get their airplane assigned to my flight. Most of he ground staff don't speak English (Orlando Airport), but were very polite.The crew on the other hand could speak English and Portuguese. On board service was good.

6.0 GoodSilvestre, Apr 2026
MCO - GRU
Read more Delta reviews

The flight was operated by Latam. The aircraft had a technical issue and the flight was delayed for the next day. They grounded other passengers to get their airplane assigned to my flight. Most of he ground staff don't speak English (Orlando Airport), but were very polite.The crew on the other hand could speak English and Portuguese. On board service was good.

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

Very easy to use and convenient, you can perform any action within the same portal

In a world of delays, Delta was on time both ways! Boarding was fast and efficient. Staff was friendly. AND wifi worked.

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

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.

Flight was delayed by several hours and then cancelled due to weather. But Staff was very helpful getting me on a different flight. United should offer food coupons and tooth brush and paste for stranded passengers

I upgraded to the business class cabin. It was the poorest business class I have ever experienced. No access to any business lounge in Tampa airport. Seats are not comfortable. I had a window seat and had to step/crawl over the next seat. Food was mediocre and service below average for business class. Bathroom location was ridiculous. No place to wait. I cannot believe I paid this kind of money and will never fly Lufthansa Discover again. They really should reimburse me somehow.

Boarding was disorganized. The door to one to the toilets wouldn’t lock. The plane was shockingly cramped, and clearly used for domestic flights due to the menus for items to sell domestic travelers. United should be ashamed of its small seats, tiny unclean toilets, and money grubbing stance toward services, compared to Lufthansa, Emirates, and most international carriers United is awful.

Was never allowed on and not refunded the full amount of the ticket plus charged a $300 processing fee.

Terrible. Lost our luggage for 4 days. Did not advise passengers there was a strike in Barcelona Airport and had zero personnel on hand at airport to advise passengers on where to go to file claims. We had to fend for ourselves. No assistance at all other than an online claims submission process that we had to find out about on our own.

Lufthansa cancelled our flight from Los Angeles to Naples Italy on March 10 for scheduled flight on March 12 Very stressful experience trying to arrange alternatives. Will never fly again with Lufthansa

Everything could have been better. What needed to be wrong with United went wrong

The staff was bit rude when I asked for an extra drink after one beer, asked for one wine glass.

Very good, i got two seats for myself, and was comfortable with the blanket i got

I hated the FRA Airport. Confusing signage, including the path to Immigration and Security It seems that the airport grew haphazardly over the years. I have been through multiple WW Hubs with much better experiences.

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

Information on your arrival and departure airports