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Cheap flights from Boston to Cagliari from $455

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Cagliari departing on 3/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Boston to Cagliari

Cheap round-trip flights

Logo
9:20 pm - 12:35 pmBOS-CAG
33h 15m2 stops
Logo
1:20 pm - 4:15 pmCAG-BOS
31h 55m2 stops
$455
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Wed, Mar 4 - Thu, Mar 12
Logo
5:30 pm - 11:40 pmBOS-CAG
24h 10m2 stops
Logo
9:00 pm - 6:45 pmCAG-BOS
27h 45m2 stops
$533
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Sun, Oct 12 - Tue, Oct 21
Logo
6:10 pm - 11:40 pmBOS-CAG
23h 30m2 stops
Logo
9:30 pm - 9:15 pmCAG-BOS
29h 45m1 stop
$553
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Sun, Oct 12 - Tue, Oct 21
Logo
11:56 am - 12:35 pmBOS-CAG
42h 39m2 stops
Logo
1:20 pm - 9:39 amCAG-BOS
26h 19m2 stops
$605
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Tue, Nov 11 - Fri, Nov 21
Logo
6:10 pm - 8:10 pmBOS-CAG
20h 00m2 stops
Logo
8:55 am - 2:20 pmCAG-BOS
35h 25m2 stops
$623
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Sun, Oct 12 - Tue, Oct 21
Logo
6:30 pm - 7:40 pmBOS-CAG
19h 10m3 stops
Logo
8:30 pm - 3:25 pmCAG-BOS
24h 55m2 stops
$679
Find Deal
Sun, Oct 12 - Tue, Oct 21
KLM Logo
6:45 pm - 4:25 pmBOS-CAG
15h 40m1 stop
KLM Logo
5:05 pm - 4:30 pmCAG-BOS
29h 25m1 stop
$903KLM
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Fri, Oct 10 - Sun, Oct 19
Lufthansa Logo
5:50 pm - 5:35 pmBOS-CAG
41h 45m2 stops
Lufthansa Logo
7:25 pm - 3:55 pmCAG-BOS
26h 30m1 stop
$941Lufthansa
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Fri, Oct 10 - Sun, Oct 19
Lufthansa Logo
5:50 pm - 5:35 pmBOS-CAG
41h 45m2 stops
Lufthansa Logo
7:25 pm - 5:40 pmCAG-BOS
28h 15m2 stops
$954Lufthansa
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Fri, Oct 10 - Sun, Oct 19
SWISS Logo
5:05 pm - 8:25 pmBOS-CAG
21h 20m1 stop
SWISS Logo
8:55 am - 3:25 pmCAG-BOS
12h 30m1 stop
$1,793SWISS
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Sun, Oct 12 - Tue, Oct 21

SWISS flights from Boston to Cagliari

Our best SWISS deals on Boston to Cagliari flight tickets
SWISS
Sep 18
BOS9:40 pmBoston Logan Intl
16h 45m
1 stop
CAG8:25 pmCagliari Elmas
Sep 25
CAG8:30 amCagliari Elmas
17h 25m
1 stop
BOS7:55 pmBoston Logan Intl
$994
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SWISS
Oct 12
BOS5:05 pmBoston Logan Intl
21h 20m
1 stop
CAG8:25 pmCagliari Elmas
Oct 21
CAG8:55 amCagliari Elmas
12h 30m
1 stop
BOS3:25 pmBoston Logan Intl
$1,793
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Lufthansa flights from Boston to Cagliari

Our best Lufthansa deals on Boston to Cagliari flight tickets
Lufthansa
Oct 10
BOS5:50 pmBoston Logan Intl
41h 45m
2 stops
CAG5:35 pmCagliari Elmas
Oct 19
CAG7:25 pmCagliari Elmas
26h 30m
1 stop
BOS3:55 pmBoston Logan Intl
$941
Find similar
Lufthansa
Oct 10
BOS5:50 pmBoston Logan Intl
41h 45m
2 stops
CAG5:35 pmCagliari Elmas
Oct 19
CAG7:25 pmCagliari Elmas
28h 15m
2 stops
BOS5:40 pmBoston Logan Intl
$954
Find similar
Lufthansa
Oct 10
BOS5:50 pmBoston Logan Intl
41h 45m
2 stops
CAG5:35 pmCagliari Elmas
Oct 19
CAG7:25 pmCagliari Elmas
30h 45m
1 stop
BOS8:10 pmBoston Logan Intl
$1,006
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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 September 15, 2025.
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

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Wed 3/4

9:20 pm-12:35 pm

2 stops33h 15m

Cagliari Elmas

Thu 3/12

1:20 pm-4:15 pm

2 stops31h 55m

$455

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sun 10/12

5:30 pm-11:40 pm

2 stops24h 10m

Cagliari Elmas

Tue 10/21

9:00 pm-6:45 pm

2 stops27h 45m

$533

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sun 10/12

6:10 pm-11:40 pm

2 stops23h 30m

Cagliari Elmas

Tue 10/21

9:30 pm-9:15 pm

1 stop29h 45m

$553

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Tue 11/11

11:56 am-12:35 pm

2 stops42h 39m

Cagliari Elmas

Fri 11/21

1:20 pm-9:39 am

2 stops26h 19m

$605

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sun 10/12

6:10 pm-8:10 pm

2 stops20h 00m

Cagliari Elmas

Tue 10/21

8:55 am-2:20 pm

2 stops35h 25m

$623

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sun 10/12

6:30 pm-7:40 pm

3 stops19h 10m

Cagliari Elmas

Tue 10/21

8:30 pm-3:25 pm

2 stops24h 55m

$679

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Fri 10/10

6:45 pm-4:25 pm

1 stop15h 40m

Cagliari Elmas

Sun 10/19

5:05 pm-4:30 pm

1 stop29h 25m

$903

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Fri 10/10

5:50 pm-5:35 pm

2 stops41h 45m

Cagliari Elmas

Sun 10/19

7:25 pm-3:55 pm

1 stop26h 30m

$941

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Fri 10/10

5:50 pm-5:35 pm

2 stops41h 45m

Cagliari Elmas

Sun 10/19

7:25 pm-5:40 pm

2 stops28h 15m

$954

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sun 10/12

5:05 pm-8:25 pm

1 stop21h 20m

Cagliari Elmas

Tue 10/21

8:55 am-3:25 pm

1 stop12h 30m

$1,793

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 day to depart on your flight to Cagliari?

The cheapest day to depart from Boston to Cagliari is on a Friday when prices can be found for as low as $1,004. On the other hand, Sunday is the most expensive day to depart from Boston because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,266.

What is the cheapest time of day to depart on your flight to Cagliari?

Our most recent data shows that the best time of day to fly to Cagliari is in the evening. Flights from Boston to Cagliari during this time can be as low as $1,036. Try not to purchase tickets at noon because they tend to be around $1,424. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

Direct flights

None
There are no direct flights from Boston to Cagliari. There are no popular flight routes from Boston to Cagliari.
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  • 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 30m.

  • 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
7.5
1,730 reviews
Search SWISS flights
VuelingPriceFrom $573Free CancellationRating
7.1
1,185 reviews
Search Vueling flights
LufthansaPriceFrom $608Free CancellationRating
6.8
7,407 reviews
Search Lufthansa flights

Traveling to a place near Cagliari?

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

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Why should I use momondo to find a flight deal from Boston to Cagliari?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Boston to Cagliari. momondo saves you time and could save you money on your trip.

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.

I’m not ready to book a flight from Boston to Cagliari right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Boston to Cagliari flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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