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Cheap flights from Boston to Cagliari from $266

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 9/2. 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

Logo
11:00 pm - 10:55 pmBOS-CAG
17h 55m1 stop
Logo
11:40 pm - 9:15 pmCAG-BOS
27h 35m1 stop
$488
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Tue, Oct 7 - Wed, Oct 15
Logo
11:00 pm - 10:55 pmBOS-CAG
17h 55m1 stop
Logo
9:30 pm - 9:15 pmCAG-BOS
29h 45m1 stop
$491
Find Deal
Tue, Oct 7 - Tue, Oct 14
SWISS Logo
9:40 pm - 8:25 pmBOS-CAG
16h 45m1 stop
SWISS Logo
8:55 am - 3:25 pmCAG-BOS
12h 30m1 stop
$509SWISS
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Sun, Oct 12 - Tue, Oct 21
SWISS Logo
9:40 pm - 8:25 pmBOS-CAG
16h 45m1 stop
SWISS Logo
8:55 am - 3:25 pmCAG-BOS
12h 30m1 stop
$530SWISS
Find Deal
Sun, Oct 12 - Tue, Oct 21
Iberia Logo
11:00 pm - 10:55 pmBOS-CAG
17h 55m1 stop
Iberia Logo
11:40 pm - 9:15 pmCAG-BOS
27h 35m1 stop
$532Iberia
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Tue, Oct 7 - Wed, Oct 15
Iberia Logo
9:04 am - 6:50 pmBOS-CAG
27h 46m2 stops
Iberia Logo
11:55 pm - 9:15 pmCAG-BOS
27h 20m1 stop
$537Iberia
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Mon, Aug 25 - Mon, Sep 8
Lufthansa Logo
8:05 pm - 5:35 pmBOS-CAG
15h 30m1 stop
Lufthansa Logo
6:25 pm - 6:55 pmCAG-BOS
54h 30m2 stops
$567Lufthansa
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Sun, Aug 24 - Wed, Sep 3
Lufthansa Logo
10:00 pm - 6:35 pmBOS-CAG
14h 35m1 stop
Lufthansa Logo
6:25 pm - 5:40 pmCAG-BOS
29h 15m1 stop
$574Lufthansa
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Wed, Aug 27 - Wed, Sep 3
British Airways Logo
9:20 pm - 2:05 pmBOS-CAG
34h 45m2 stops
British Airways Logo
2:55 pm - 10:19 pmCAG-BOS
37h 24m2 stops
$577British Airways
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Sun, Oct 12 - Tue, Oct 21
British Airways Logo
9:20 pm - 7:20 pmBOS-CAG
40h 00m2 stops
British Airways Logo
9:25 pm - 10:50 pmCAG-BOS
31h 25m2 stops
$578British Airways
Find Deal
Mon, Sep 15 - Thu, Sep 25

SWISS flights from Boston to Cagliari

Our best SWISS deals on Boston to Cagliari flight tickets
SWISS
Oct 12
BOS9:40 pmBoston Logan Intl
16h 45m
1 stop
CAG8:25 pmCagliari Elmas
Oct 21
CAG8:55 amCagliari Elmas
12h 30m
1 stop
BOS3:25 pmBoston Logan Intl
$509
Find similar
SWISS
Oct 12
BOS9:40 pmBoston Logan Intl
16h 45m
1 stop
CAG8:25 pmCagliari Elmas
Oct 21
CAG8:55 amCagliari Elmas
12h 30m
1 stop
BOS3:25 pmBoston Logan Intl
$530
Find similar
SWISS
Aug 24
BOS9:40 pmBoston Logan Intl
28h 30m
1 stop
CAG8:10 amCagliari Elmas
Sep 3
CAG10:00 amCagliari Elmas
11h 25m
1 stop
BOS3:25 pmBoston Logan Intl
$535
Find similar

Iberia flights from Boston to Cagliari

Our best Iberia deals on Boston to Cagliari flight tickets
Iberia
Oct 7
BOS11:00 pmBoston Logan Intl
17h 55m
1 stop
CAG10:55 pmCagliari Elmas
Oct 15
CAG11:40 pmCagliari Elmas
27h 35m
1 stop
BOS9:15 pmBoston Logan Intl
$532
Find similar
Iberia
Aug 25
BOS9:04 amBoston Logan Intl
27h 46m
2 stops
CAG6:50 pmCagliari Elmas
Sep 8
CAG11:55 pmCagliari Elmas
27h 20m
1 stop
BOS9:15 pmBoston Logan Intl
$537
Find similar
Iberia
Aug 25
BOS12:54 pmBoston Logan Intl
23h 56m
2 stops
CAG6:50 pmCagliari Elmas
Sep 4
CAG7:30 pmCagliari Elmas
25h 30m
1 stop
BOS3:00 pmBoston Logan Intl
$541
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 July 30, 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 10/7

11:00 pm-10:55 pm

1 stop17h 55m

Cagliari Elmas

Wed 10/15

11:40 pm-9:15 pm

1 stop27h 35m

$488

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Tue 10/7

11:00 pm-10:55 pm

1 stop17h 55m

Cagliari Elmas

Tue 10/14

9:30 pm-9:15 pm

1 stop29h 45m

$491

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sun 10/12

9:40 pm-8:25 pm

1 stop16h 45m

Cagliari Elmas

Tue 10/21

8:55 am-3:25 pm

1 stop12h 30m

$509

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sun 10/12

9:40 pm-8:25 pm

1 stop16h 45m

Cagliari Elmas

Tue 10/21

8:55 am-3:25 pm

1 stop12h 30m

$530

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Tue 10/7

11:00 pm-10:55 pm

1 stop17h 55m

Cagliari Elmas

Wed 10/15

11:40 pm-9:15 pm

1 stop27h 35m

$532

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Mon 8/25

9:04 am-6:50 pm

2 stops27h 46m

Cagliari Elmas

Mon 9/8

11:55 pm-9:15 pm

1 stop27h 20m

$537

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sun 8/24

8:05 pm-5:35 pm

1 stop15h 30m

Cagliari Elmas

Wed 9/3

6:25 pm-6:55 pm

2 stops54h 30m

$567

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Wed 8/27

10:00 pm-6:35 pm

1 stop14h 35m

Cagliari Elmas

Wed 9/3

6:25 pm-5:40 pm

1 stop29h 15m

$574

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sun 10/12

9:20 pm-2:05 pm

2 stops34h 45m

Cagliari Elmas

Tue 10/21

2:55 pm-10:19 pm

2 stops37h 24m

$577

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Mon 9/15

9:20 pm-7:20 pm

2 stops40h 00m

Cagliari Elmas

Thu 9/25

9:25 pm-10:50 pm

2 stops31h 25m

$578

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 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

Best Price Found

$266

Fastest flight time

11h 35m

Direct flights

None

Airports in Cagliari

1 airport
The best one-way flight to Cagliari from Boston in the past 72 hours is $266. The best round-trip flight deal from Boston to Cagliari found on momondo in the last 72 hours is $488.
The fastest flight from Boston to Cagliari takes 11h 35m
There are no direct flights from Boston to Cagliari. Popular non-direct route for this connection is Boston Logan Intl Airport - Cagliari Elmas Airport.
There is 1 airport near Cagliari: Cagliari Elmas (CAG)
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 11h 35m.

  • 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
VuelingPriceFrom $573Free CancellationRating
7.1
1,176 reviews
Search Vueling flights
LufthansaPriceFrom $670Free CancellationRating
6.8
7,269 reviews
Search Lufthansa flights
ITA AirwaysPriceFrom $796Free CancellationRating
6.7
1,009 reviews
Search ITA Airways flights

Traveling to a place near Cagliari?

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