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Cheap flights from Boston to Cagliari from $393

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Cagliari departing on 9/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Boston to Cagliari

Cheap round-trip flights

Enter your travel dates to find the best prices.
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 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
$622Iberia
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
$651Iberia
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
$679Iberia
Sun, Sep 27 - Wed, Sep 30
SWISS Logo
5:20 pm - 7:40 am
BOS
-
CAG
32h 20m
1 stop
SWISS Logo
8:50 am - 7:55 pm
CAG
-
BOS
17h 05m
1 stop
$755SWISS
Tue, Aug 18 - Sun, Aug 30
SWISS Logo
9:40 pm - 7:40 am
BOS
-
CAG
28h 00m
1 stop
SWISS Logo
8:55 am - 7:55 pm
CAG
-
BOS
17h 00m
1 stop
$763SWISS
Tue, Sep 22 - Tue, Oct 20
Multiple Airlines Logo
8:05 pm - 5:45 pm
BOS
-
CAG
15h 40m
1 stop
Multiple Airlines Logo
9:05 pm - 7:55 pm
CAG
-
BOS
28h 50m
1 stop
$786Multiple Airlines
Sun, Jul 19 - Mon, Jul 27
Multiple Airlines Logo
8:05 pm - 5:45 pm
BOS
-
CAG
15h 40m
1 stop
Multiple Airlines Logo
9:05 pm - 3:10 pm
CAG
-
BOS
24h 05m
1 stop
$793Multiple Airlines
Sun, Jul 19 - Mon, Jul 27
Iberia Logo
11:35 pm - 9:05 am
BOS
-
CAG
27h 30m
1 stop
Iberia Logo
11:40 pm - 9:45 pm
CAG
-
BOS
28h 05m
1 stop
$807Iberia
Sun, Jul 5 - Sat, Jul 18
Iberia Logo
11:35 pm - 9:05 am
BOS
-
CAG
27h 30m
1 stop
Iberia Logo
11:40 pm - 9:45 pm
CAG
-
BOS
28h 05m
1 stop
$824Iberia
Sun, Jul 5 - Sat, Jul 18

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Iberia flights from Boston to Cagliari

Our best Iberia deals on Boston to Cagliari flight tickets
Iberia
Sep 27
BOS11:50 pmBoston Logan Intl
27h 00m
1 stop
CAG8:50 amCagliari Elmas
Sep 30
CAG1:40 pmCagliari Elmas
13h 35m
1 stop
BOS9:15 pmBoston Logan Intl
$578
Iberia
Sep 27
BOS11:50 pmBoston Logan Intl
27h 00m
1 stop
CAG8:50 amCagliari Elmas
Sep 30
CAG1:40 pmCagliari Elmas
13h 35m
1 stop
BOS9:15 pmBoston Logan Intl
$622
Iberia
Sep 27
BOS11:50 pmBoston Logan Intl
27h 00m
1 stop
CAG8:50 amCagliari Elmas
Sep 30
CAG1:40 pmCagliari Elmas
13h 35m
1 stop
BOS9:15 pmBoston Logan Intl
$651

Lufthansa flights from Boston to Cagliari

Our best Lufthansa deals on Boston to Cagliari flight tickets
Lufthansa
Aug 18
BOS8:05 pmBoston Logan Intl
15h 40m
1 stop
CAG5:45 pmCagliari Elmas
Aug 30
CAG11:00 amCagliari Elmas
18h 54m
2 stops
BOS11:54 pmBoston Logan Intl
$835
Lufthansa
Jul 19
BOS8:05 pmBoston Logan Intl
15h 40m
1 stop
CAG5:45 pmCagliari Elmas
Jul 27
CAG6:35 pmCagliari Elmas
29h 05m
1 stop
BOS5:40 pmBoston Logan Intl
$849
Lufthansa
Jul 19
BOS8:05 pmBoston Logan Intl
15h 40m
1 stop
CAG5:45 pmCagliari Elmas
Jul 27
CAG6:35 pmCagliari Elmas
29h 05m
1 stop
BOS5:40 pmBoston Logan Intl
$851

momondo Fare Finder

 
Customize your flight search to find flights from Boston to Cagliari that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated May 3, 2026.
Use the filters below to find and compare flights from Boston to Cagliari that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sun 9/27

11:50 pm-8:50 am

1 stop27h 00m

Cagliari Elmas

Wed 9/30

1:40 pm-9:15 pm

1 stop13h 35m

$578

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sun 9/27

11:50 pm-8:50 am

1 stop27h 00m

Cagliari Elmas

Wed 9/30

1:40 pm-9:15 pm

1 stop13h 35m

$622

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sun 9/27

11:50 pm-8:50 am

1 stop27h 00m

Cagliari Elmas

Wed 9/30

1:40 pm-9:15 pm

1 stop13h 35m

$651

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sun 9/27

11:50 pm-8:50 am

1 stop27h 00m

Cagliari Elmas

Wed 9/30

1:40 pm-9:15 pm

1 stop13h 35m

$679

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Tue 8/18

5:20 pm-7:40 am

1 stop32h 20m

Cagliari Elmas

Sun 8/30

8:50 am-7:55 pm

1 stop17h 05m

$755

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Tue 9/22

9:40 pm-7:40 am

1 stop28h 00m

Cagliari Elmas

Tue 10/20

8:55 am-7:55 pm

1 stop17h 00m

$763

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sun 7/19

8:05 pm-5:45 pm

1 stop15h 40m

Cagliari Elmas

Mon 7/27

9:05 pm-7:55 pm

1 stop28h 50m

$786
Quickest round-trip

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sun 7/19

8:05 pm-5:45 pm

1 stop15h 40m

Cagliari Elmas

Mon 7/27

9:05 pm-3:10 pm

1 stop24h 05m

$793

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sun 7/5

11:35 pm-9:05 am

1 stop27h 30m

Cagliari Elmas

Sat 7/18

11:40 pm-9:45 pm

1 stop28h 05m

$807

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sun 7/5

11:35 pm-9:05 am

1 stop27h 30m

Cagliari Elmas

Sat 7/18

11:40 pm-9:45 pm

1 stop28h 05m

$824

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Cagliari from

How to get the cheapest flight ticket from Boston to Cagliari

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Boston Logan Intl to Cagliari Elmas?

SWISS is the most popular carrier operating from Boston Logan Intl to Cagliari Elmas

What airlines fly to Cagliari?

Lufthansa, SWISS and Delta are the top three most popular airlines that fly to Cagliari from Boston according to our data. Lufthansa is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Cagliari. Keep in mind that there are 3 different airlines that fly to Cagliari on a routine basis, so you have a few additional options to choose from.

When to book flights from Boston to Cagliari

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Cagliari according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to Cagliari (BOS to CAG) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Cagliari

Fastest flight time

11h 00m

Direct flights

None
The fastest flight from Boston to Cagliari takes 11h 00m
There are no direct flights from Boston to Cagliari. There are no popular flight routes from Boston to Cagliari.
Search flight deals

Frequently asked questions about flying from Boston to Cagliari

  • How far is Boston Logan Intl to Cagliari Elmas by plane?

    A flight from Boston Logan Intl to Cagliari Elmas will travel around 4033.5 mi. By plane, this route typically takes 11h 00m.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Cagliari Elmas Airport?

    Prices for flights from Boston Logan Intl Airport to Cagliari Elmas Airport refresh daily.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to Cagliari Elmas Airport?

  • How old do you have to be to fly from Boston Logan Intl Airport to Cagliari Elmas Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Boston Logan Intl Airport to Cagliari Elmas Airport.

  • What documentation or ID do you need to fly to Cagliari Elmas Airport?

    The travel and health documents required for your trip to Cagliari Elmas Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Cagliari Elmas Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Boston to Cagliari?

Best airlines flying from Boston to Cagliari

Compare and see reviews for airlines that fly from Boston to Cagliari with momondo
Airline
Rating
Free Cancellation
Price
SWISSPriceFrom $525Free CancellationRating
7.6
1,932 reviews
Search SWISS flights
DeltaPriceFrom $555Free CancellationRating
7.9
8,460 reviews
Search Delta flights
LufthansaPriceFrom $619Free CancellationRating
6.8
7,965 reviews
Search Lufthansa flights

Traveling to a place near Cagliari?

Book flights to Cagliari if you plan to visit one of these locations
Villasimius
Oristano
Pula
Arbatax

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Can I find flights from Boston to Cagliari with flexible booking policies on momondo?

All flight searches from Boston to Cagliari on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Boston to Cagliari?

momondo provides multiple filters to help you find the best flight to Cagliari from Boston. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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