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Cheap flights from Boston to Cagliari from $553

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 12/1. 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

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:05 pm - 7:10 pmBOS-CAG
19h 05m2 stops
Multiple Airlines Logo
9:30 am - 2:35 pmCAG-BOS
35h 05m2 stops
$553Multiple Airlines
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Mon, Dec 1 - Fri, Dec 12
Multiple Airlines Logo
5:40 pm - 6:20 pmBOS-CAG
18h 40m1 stop
Multiple Airlines Logo
6:35 pm - 9:52 amCAG-BOS
45h 17m2 stops
$576Multiple Airlines
Find Deal
Sun, Apr 5 - Sun, Apr 19
Multiple Airlines Logo
8:05 pm - 6:20 pmBOS-CAG
16h 15m2 stops
Multiple Airlines Logo
6:35 pm - 9:52 amCAG-BOS
45h 17m2 stops
$585Multiple Airlines
Find Deal
Sun, Apr 5 - Sun, Apr 19
Multiple Airlines Logo
6:40 pm - 6:15 pmBOS-CAG
41h 35m2 stops
Multiple Airlines Logo
6:35 pm - 2:52 pmCAG-BOS
50h 17m2 stops
$586Multiple Airlines
Find Deal
Fri, Apr 17 - Sun, Apr 26
Lufthansa Logo
5:40 pm - 6:20 pmBOS-CAG
18h 40m1 stop
Lufthansa Logo
6:35 pm - 5:40 pmCAG-BOS
29h 05m1 stop
$626Lufthansa
Find Deal
Sun, Apr 5 - Sun, Apr 19
Multiple Airlines Logo
6:40 pm - 6:15 pmBOS-CAG
41h 35m2 stops
Multiple Airlines Logo
6:35 pm - 5:40 pmCAG-BOS
29h 05m1 stop
$636Multiple Airlines
Find Deal
Fri, Apr 17 - Sun, Apr 26
Lufthansa Logo
5:40 pm - 6:20 pmBOS-CAG
18h 40m1 stop
Lufthansa Logo
6:35 pm - 5:40 pmCAG-BOS
29h 05m1 stop
$730Lufthansa
Find Deal
Sun, Mar 29 - Wed, Apr 1
Lufthansa Logo
8:05 pm - 6:20 pmBOS-CAG
16h 15m2 stops
Lufthansa Logo
6:35 pm - 5:40 pmCAG-BOS
29h 05m1 stop
$739Lufthansa
Find Deal
Sun, Mar 29 - Wed, Apr 1
Lufthansa Logo
8:05 pm - 6:20 pmBOS-CAG
16h 15m2 stops
Lufthansa Logo
6:35 pm - 5:40 pmCAG-BOS
29h 05m1 stop
$740Lufthansa
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Sun, Mar 29 - Wed, Apr 1
Iberia Logo
10:40 pm - 12:35 pmBOS-CAG
31h 55m1 stop
Iberia Logo
1:25 pm - 8:55 pmCAG-BOS
13h 30m1 stop
$3,211Iberia
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Thu, Dec 18 - Sat, Jan 3

Lufthansa flights from Boston to Cagliari

Our best Lufthansa deals on Boston to Cagliari flight tickets
Lufthansa
Apr 5
BOS5:40 pmBoston Logan Intl
18h 40m
1 stop
CAG6:20 pmCagliari Elmas
Apr 19
CAG6:35 pmCagliari Elmas
29h 05m
1 stop
BOS5:40 pmBoston Logan Intl
$626
Find similar
Lufthansa
Mar 29
BOS5:40 pmBoston Logan Intl
18h 40m
1 stop
CAG6:20 pmCagliari Elmas
Apr 1
CAG6:35 pmCagliari Elmas
29h 05m
1 stop
BOS5:40 pmBoston Logan Intl
$730
Find similar
Lufthansa
Mar 29
BOS8:05 pmBoston Logan Intl
16h 15m
2 stops
CAG6:20 pmCagliari Elmas
Apr 1
CAG6:35 pmCagliari Elmas
29h 05m
1 stop
BOS5:40 pmBoston Logan Intl
$739
Find similar

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 November 3, 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

Mon 12/1

6:05 pm-7:10 pm

2 stops19h 05m

Cagliari Elmas

Fri 12/12

9:30 am-2:35 pm

2 stops35h 05m

$553

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sun 4/5

5:40 pm-6:20 pm

1 stop18h 40m

Cagliari Elmas

Sun 4/19

6:35 pm-9:52 am

2 stops45h 17m

$576

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sun 4/5

8:05 pm-6:20 pm

2 stops16h 15m

Cagliari Elmas

Sun 4/19

6:35 pm-9:52 am

2 stops45h 17m

$585

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Fri 4/17

6:40 pm-6:15 pm

2 stops41h 35m

Cagliari Elmas

Sun 4/26

6:35 pm-2:52 pm

2 stops50h 17m

$586

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sun 4/5

5:40 pm-6:20 pm

1 stop18h 40m

Cagliari Elmas

Sun 4/19

6:35 pm-5:40 pm

1 stop29h 05m

$626

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Fri 4/17

6:40 pm-6:15 pm

2 stops41h 35m

Cagliari Elmas

Sun 4/26

6:35 pm-5:40 pm

1 stop29h 05m

$636

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sun 3/29

5:40 pm-6:20 pm

1 stop18h 40m

Cagliari Elmas

Wed 4/1

6:35 pm-5:40 pm

1 stop29h 05m

$730

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sun 3/29

8:05 pm-6:20 pm

2 stops16h 15m

Cagliari Elmas

Wed 4/1

6:35 pm-5:40 pm

1 stop29h 05m

$739

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sun 3/29

8:05 pm-6:20 pm

2 stops16h 15m

Cagliari Elmas

Wed 4/1

6:35 pm-5:40 pm

1 stop29h 05m

$740

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Thu 12/18

10:40 pm-12:35 pm

1 stop31h 55m

Cagliari Elmas

Sat 1/3

1:25 pm-8:55 pm

1 stop13h 30m

$3,211

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 15h 40m.

  • 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 $531Free CancellationRating
7.5
1,775 reviews
Search SWISS flights
VuelingPriceFrom $573Free CancellationRating
7.1
1,205 reviews
Search Vueling flights
LufthansaPriceFrom $651Free CancellationRating
6.8
7,544 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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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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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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