BOS - CAG

$335 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 9/6. 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

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Everything you should know

Cheapest round-trip
$740
Multiple Airlines
Wed 9/9Sun 9/20
BOS - CAG • 2 stops
Cheapest one-way
$335
Multiple Airlines
Sun 9/6
BOS - CAG • 3 stops
Top airlines
Cheapest • from $764 (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
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Insights
Top layover airports
Cheapest • Avg $729 (round-trip)
Shortest trip • 11h 54m (one-way)
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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

Wed, Sep 9 - Sun, Sep 20
Multiple Airlines Logo
4:45 pm - 11:00 pm
BOS
-
CAG
24h 15m
2 stops
Multiple Airlines Logo
8:40 am - 2:45 pm
CAG
-
BOS
36h 05m
2 stops
$740Multiple Airlines
Sun, Aug 23 - Sat, Sep 5
LEVEL Logo
11:35 pm - 8:50 am
BOS
-
CAG
27h 15m
1 stop
LEVEL Logo
11:40 pm - 9:45 pm
CAG
-
BOS
28h 05m
1 stop
$764LEVEL
Sun, Aug 23 - Sat, Sep 5
Multiple Airlines Logo
7:10 pm - 12:55 am
BOS
-
CAG
23h 45m
2 stops
Multiple Airlines Logo
11:40 pm - 9:45 pm
CAG
-
BOS
28h 05m
1 stop
$776Multiple Airlines
Sun, Aug 23 - Sat, Sep 5
Multiple Airlines Logo
8:50 pm - 8:50 am
BOS
-
CAG
30h 00m
3 stops
Multiple Airlines Logo
11:40 pm - 8:20 pm
CAG
-
BOS
26h 40m
3 stops
$782Multiple Airlines
Wed, Sep 9 - Wed, Sep 16
Multiple Airlines Logo
8:50 pm - 11:20 pm
BOS
-
CAG
20h 30m
2 stops
Multiple Airlines Logo
1:00 pm - 6:50 pm
CAG
-
BOS
35h 50m
2 stops
$787Multiple Airlines
Tue, Jul 21 - Tue, Jul 28
Multiple Airlines Logo
4:45 pm - 2:40 pm
BOS
-
CAG
15h 55m
2 stops
Multiple Airlines Logo
8:10 pm - 2:45 pm
CAG
-
BOS
24h 35m
2 stops
$809Multiple Airlines
Tue, Sep 8 - Mon, Sep 21
Multiple Airlines Logo
8:50 pm - 9:05 am
BOS
-
CAG
30h 15m
3 stops
Multiple Airlines Logo
6:20 am - 8:20 pm
CAG
-
BOS
20h 00m
3 stops
$823Multiple Airlines
Tue, Sep 8 - Wed, Sep 16
Multiple Airlines Logo
8:50 pm - 9:05 am
BOS
-
CAG
30h 15m
3 stops
Multiple Airlines Logo
12:55 pm - 2:02 pm
CAG
-
BOS
31h 07m
3 stops
$832Multiple Airlines
Tue, Sep 8 - Mon, Sep 21
Multiple Airlines Logo
9:20 pm - 2:45 pm
BOS
-
CAG
11h 25m
1 stop
Multiple Airlines Logo
10:05 pm - 9:05 pm
CAG
-
BOS
53h 00m
2 stops
$833Multiple Airlines
Sun, Aug 16 - Sun, Aug 23
Delta Logo
5:10 pm - 6:00 pm
BOS
-
CAG
18h 50m
1 stop
Delta Logo
5:05 pm - 4:37 pm
CAG
-
BOS
29h 32m
1 stop
$836Delta
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 LEVEL ($764) and Delta ($836).

Good to know

Cheapest flight$335
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 $335 for a one-way ticket and $740 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 8450 reviews
7.8Entertainment
7.2Food
8.5Crew
8.1Boarding
7.8Comfort
Airline reviews

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

8.0 ExcellentAnonymous, Jun 2026
BOS - RDU
Read more Delta reviews

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

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

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 baggage belt was not updated on the Delta App and was displayed on the wrong belt board. Was not expecting this to happen.

The plan was delayed and left DC 90 minutes late. However, it showed a 20 minute delay on the delta app, then a 12 min delay. It turned out to be an hour delay. I found out where the plane was with flightaware. Stop keeping customers in the dark about what is going on.

Pilots lied about waiting on “paperwork”. Sat in the plane for over an hour, waiting on some papers to be printed according to the pilot and then all of a sudden he says good news maintenance is finally on their way. Maybe they can fix it before we get our paperwork. Ended up missing my connection in LaGuardia and as a result, had a fly home to Lexington instead of the Louisville airport. Then paid $100 to uber to Louisville since it was midnight by the time I got in. I wish they would just be transparent with passengers sometimes and not try to beat around the bush on why things are delayed.

One of the flight attendants was a little cranky. I appreciated the free wifi and plug to charge my laptop

The flight was smooth, the crew was great but the plane was quite old

The flight was delayed 90 minutes The Gate was wrong The Restroom on Aircraft was not clean There was a half used water bottle in my seat

Cabin was not pressurized properly. Several passengers had respiratory difficulties.

Terrible airline both Swiss and Lufthansa that are part of the same corp. stay away if you can

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.

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.

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

I can’t even the whole trip was a catastrophe

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

I like how professional, fast and good the whole experience was.

Delayed flight… caused the missing of my connecting flight in Zurich. Had to wait 10 hours in airport for new flight which was also delayed by 1 hour. No apologies and minimal compensation.

We were very impressed with Swiss Air. The service was exceptional. Unfortunately, we had a baby behind us that screamed for hours. , It was a nightmare, though I completely understand that it was not Swiss Airs fault.

We didn't get the coffee with breakfast in the morning.. 30 mins lazer I asked flight attendant why don't we get coffee now at least.. after the breakfast..she said that captain announced possible turbulences fee minutes ago, which didn't ecplain why we didn't get it with the breakfast..breakfast was very poor btw..just little pastry which you can eat in 4 little bites. Turbulences fortunately didn't even happen.. but we didn't get that more than necessary coffee in the morning after the night flight with very poor sleep.. They just served breakfast 1 hour afzer we took off..at like 11 PM.. that doesn't make sense at all.. Also, flight attendants weren't very nice..they looked like they're not happy with their job.. :/

Flight was 1.5 hours late to depart so changed flights to Swiss Air.

Entertainment was good. Food was mediocre. Service was mediocre. New plane was smooth

Staff was great. Space in bathrooms was very good. Boarding went smoothly due to aisles. I would like more room in coach. 2 more inches would be helpful. Lost luggage was a big issue; more on the administrative side than flight related, but diminished the flight experience.

Flight was cancelled and I got rebooked with anther airline. Also had booked a direct flight and got a layover.

The seats are designed for 12 years old, but pretty uncomfortable for the average adulte!!

Boston Logan is a crummy airport - signage is terrible or lacking in areas. Boarding seemed to be a free for all and with all the different airlines speaking, you couldn't tell who was supposed to be where and when. Plain and simple, airlines should board from the back of the plane to the front. Also someone was sitting in my seat. By the time that was figured out, I had to place my overhead behind me which made de-planing more difficult. Logan is not Lufthansa's fault so that is not on them, Boarding is on them! Still, overall it was a Good Experience flying with Lufthansa. This is not my first flight with them...

The Lufthansa part was wonderful. The short connection flight was not.

Both flights were late for what appeared to be the airline’s not having the planes ready. Arrived over 6 hours late.

Seats were not the most comfortable and food options weren’t great but overall but everything else was excellent

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

Information on your arrival and departure airports