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Cheap flights from Boston to Cagliari from $528

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 4/7. 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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Find the cheapest flights from Boston to Cagliari

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:40 pm - 7:50 am
BOS
-
CAG
28h 10m1 stop
Multiple Airlines Logo
6:35 pm - 5:40 pm
CAG
-
BOS
29h 05m1 stop
$528Multiple Airlines
Tue, Apr 7 - Wed, Apr 29
Multiple Airlines Logo
9:40 pm - 7:50 am
BOS
-
CAG
28h 10m1 stop
Multiple Airlines Logo
6:35 pm - 7:06 pm
CAG
-
BOS
30h 31m2 stops
$535Multiple Airlines
Tue, Apr 7 - Wed, Apr 29
Delta Logo
5:15 pm - 4:25 pm
BOS
-
CAG
17h 10m2 stops
Delta Logo
5:05 pm - 3:50 pm
CAG
-
BOS
28h 45m2 stops
$570Delta
Tue, Apr 7 - Wed, Apr 29
Multiple Airlines Logo
7:50 pm - 9:40 pm
BOS
-
CAG
19h 50m2 stops
Multiple Airlines Logo
6:00 am - 5:50 pm
CAG
-
BOS
17h 50m2 stops
$629Multiple Airlines
Sat, Jan 31 - Sat, Feb 7
Multiple Airlines Logo
10:40 pm - 12:35 pm
BOS
-
CAG
31h 55m1 stop
Multiple Airlines Logo
1:20 pm - 8:55 pm
CAG
-
BOS
13h 35m1 stop
$654Multiple Airlines
Sat, Jan 31 - Sat, Feb 7
Multiple Airlines Logo
8:05 pm - 5:45 pm
BOS
-
CAG
15h 40m1 stop
Multiple Airlines Logo
8:55 am - 7:55 pm
CAG
-
BOS
17h 00m1 stop
$666Multiple Airlines
Sat, May 16 - Sat, May 23
SWISS Logo
5:05 pm - 7:40 am
BOS
-
CAG
32h 35m1 stop
SWISS Logo
8:30 am - 7:55 pm
CAG
-
BOS
17h 25m1 stop
$673SWISS
Tue, Jun 2 - Thu, Jun 11
Multiple Airlines Logo
8:05 pm - 6:15 pm
BOS
-
CAG
16h 10m2 stops
Multiple Airlines Logo
8:55 am - 7:55 pm
CAG
-
BOS
17h 00m1 stop
$696Multiple Airlines
Sat, May 16 - Sat, May 23
Multiple Airlines Logo
10:45 pm - 11:15 pm
BOS
-
CAG
18h 30m2 stops
Multiple Airlines Logo
1:20 pm - 2:35 pm
CAG
-
BOS
31h 15m2 stops
$716Multiple Airlines
Fri, Feb 27 - Sat, Mar 7
Multiple Airlines Logo
5:05 pm - 7:40 am
BOS
-
CAG
32h 35m1 stop
Multiple Airlines Logo
6:55 pm - 5:40 pm
CAG
-
BOS
28h 45m2 stops
$722Multiple Airlines
Tue, Jun 2 - Thu, Jun 11

Lufthansa flights from Boston to Cagliari

Our best Lufthansa deals on Boston to Cagliari flight tickets
Lufthansa
May 16
BOS8:05 pmBoston Logan Intl
16h 10m
2 stops
CAG6:15 pmCagliari Elmas
May 23
CAG9:15 amCagliari Elmas
14h 25m
2 stops
BOS5:40 pmBoston Logan Intl
$748
Find similar
Lufthansa
Jun 2
BOS5:45 pmBoston Logan Intl
42h 00m
2 stops
CAG5:45 pmCagliari Elmas
Jun 11
CAG6:55 pmCagliari Elmas
28h 45m
2 stops
BOS5:40 pmBoston Logan Intl
$849
Find similar
Lufthansa
Jun 1
BOS5:45 pmBoston Logan Intl
18h 00m
2 stops
CAG5:45 pmCagliari Elmas
Jun 11
CAG6:55 pmCagliari Elmas
28h 45m
2 stops
BOS5:40 pmBoston Logan Intl
$915
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 December 18, 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

Tue 4/7

9:40 pm-7:50 am

1 stop28h 10m

Cagliari Elmas

Wed 4/29

6:35 pm-5:40 pm

1 stop29h 05m

$528

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Tue 4/7

9:40 pm-7:50 am

1 stop28h 10m

Cagliari Elmas

Wed 4/29

6:35 pm-7:06 pm

2 stops30h 31m

$535

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Tue 4/7

5:15 pm-4:25 pm

2 stops17h 10m

Cagliari Elmas

Wed 4/29

5:05 pm-3:50 pm

2 stops28h 45m

$570

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sat 1/31

7:50 pm-9:40 pm

2 stops19h 50m

Cagliari Elmas

Sat 2/7

6:00 am-5:50 pm

2 stops17h 50m

$629

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sat 1/31

10:40 pm-12:35 pm

1 stop31h 55m

Cagliari Elmas

Sat 2/7

1:20 pm-8:55 pm

1 stop13h 35m

$654

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sat 5/16

8:05 pm-5:45 pm

1 stop15h 40m

Cagliari Elmas

Sat 5/23

8:55 am-7:55 pm

1 stop17h 00m

$666

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Tue 6/2

5:05 pm-7:40 am

1 stop32h 35m

Cagliari Elmas

Thu 6/11

8:30 am-7:55 pm

1 stop17h 25m

$673

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sat 5/16

8:05 pm-6:15 pm

2 stops16h 10m

Cagliari Elmas

Sat 5/23

8:55 am-7:55 pm

1 stop17h 00m

$696

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Fri 2/27

10:45 pm-11:15 pm

2 stops18h 30m

Cagliari Elmas

Sat 3/7

1:20 pm-2:35 pm

2 stops31h 15m

$716

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Tue 6/2

5:05 pm-7:40 am

1 stop32h 35m

Cagliari Elmas

Thu 6/11

6:55 pm-5:40 pm

2 stops28h 45m

$722

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

Fastest flight time

15h 40m

Direct flights

None
The fastest flight from Boston to Cagliari takes 15h 40m
There are no direct flights from Boston to Cagliari. There are no popular flight routes from Boston to Cagliari.
Search flight deals

  • 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
1,817 reviews
Search SWISS flights
VuelingPriceFrom $588Free CancellationRating
7.1
1,219 reviews
Search Vueling flights
LufthansaPriceFrom $608Free CancellationRating
6.8
7,637 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?

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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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