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Cheap flights from Boston to Cagliari from $377

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 8/19. 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.
SWISS Logo
5:20 pm - 7:40 am
BOS
-
CAG
32h 20m
1 stop
SWISS Logo
5:45 pm - 8:20 pm
CAG
-
BOS
32h 35m
1 stop
$675SWISS
Tue, Aug 4 - Sat, Nov 7
Multiple Airlines Logo
8:05 pm - 5:45 pm
BOS
-
CAG
15h 40m
1 stop
Multiple Airlines Logo
5:45 pm - 8:20 pm
CAG
-
BOS
32h 35m
1 stop
$676Multiple Airlines
Sun, Aug 2 - Sat, Nov 7
Multiple Airlines Logo
8:05 pm - 5:45 pm
BOS
-
CAG
15h 40m
1 stop
Multiple Airlines Logo
5:45 pm - 9:37 am
CAG
-
BOS
45h 52m
2 stops
$681Multiple Airlines
Sat, Aug 1 - Sat, Nov 7
SWISS Logo
9:40 pm - 8:25 am
BOS
-
CAG
28h 45m
1 stop
SWISS Logo
10:00 am - 7:55 pm
CAG
-
BOS
15h 55m
1 stop
$683SWISS
Mon, Sep 14 - Wed, Sep 23
Multiple Airlines Logo
2:19 pm - 5:45 pm
BOS
-
CAG
21h 26m
2 stops
Multiple Airlines Logo
9:05 pm - 3:10 pm
CAG
-
BOS
24h 05m
1 stop
$685Multiple Airlines
Wed, Aug 26 - Mon, Aug 31
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
$686Multiple Airlines
Wed, Aug 26 - Mon, Aug 31
Multiple Airlines Logo
5:00 pm - 6:15 pm
BOS
-
CAG
19h 15m
2 stops
Multiple Airlines Logo
5:45 pm - 2:37 pm
CAG
-
BOS
50h 52m
2 stops
$696Multiple Airlines
Sat, Aug 1 - Sat, Nov 7
Lufthansa Logo
7:25 pm - 5:45 pm
BOS
-
CAG
16h 20m
2 stops
Lufthansa Logo
6:35 pm - 8:10 pm
CAG
-
BOS
31h 35m
2 stops
$699Lufthansa
Wed, Aug 26 - Mon, Aug 31
Lufthansa Logo
8:05 pm - 5:45 pm
BOS
-
CAG
15h 40m
1 stop
Lufthansa Logo
6:35 pm - 5:40 pm
CAG
-
BOS
29h 05m
1 stop
$702Lufthansa
Mon, Apr 27 - Mon, May 4
Multiple Airlines Logo
8:05 pm - 5:05 pm
BOS
-
CAG
15h 00m
2 stops
Multiple Airlines Logo
5:45 pm - 8:20 pm
CAG
-
BOS
32h 35m
1 stop
$703Multiple Airlines
Sun, Aug 2 - Sat, Nov 7

British Airways flights from Boston to Cagliari

Our best British Airways deals on Boston to Cagliari flight tickets
British Airways
Sep 2
BOS7:25 amBoston Logan Intl
31h 00m
1 stop
CAG8:25 pmCagliari Elmas
Sep 9
CAG8:15 pmCagliari Elmas
32h 20m
1 stop
BOS10:35 pmBoston Logan Intl
$739
British Airways
Sep 2
BOS1:10 pmBoston Logan Intl
25h 15m
2 stops
CAG8:25 pmCagliari Elmas
Sep 9
CAG8:15 pmCagliari Elmas
29h 50m
1 stop
BOS8:05 pmBoston Logan Intl
$773
British Airways
Sep 2
BOS1:10 pmBoston Logan Intl
25h 15m
2 stops
CAG8:25 pmCagliari Elmas
Sep 9
CAG8:15 pmCagliari Elmas
33h 25m
2 stops
BOS11:40 pmBoston Logan Intl
$781

SWISS flights from Boston to Cagliari

Our best SWISS deals on Boston to Cagliari flight tickets
SWISS
Aug 4
BOS5:20 pmBoston Logan Intl
32h 20m
1 stop
CAG7:40 amCagliari Elmas
Nov 7
CAG5:45 pmCagliari Elmas
32h 35m
1 stop
BOS8:20 pmBoston Logan Intl
$675
SWISS
Sep 14
BOS9:40 pmBoston Logan Intl
28h 45m
1 stop
CAG8:25 amCagliari Elmas
Sep 23
CAG10:00 amCagliari Elmas
15h 55m
1 stop
BOS7:55 pmBoston Logan Intl
$683
SWISS
Aug 13
BOS5:20 pmBoston Logan Intl
14h 00m
1 stop
CAG1:20 pmCagliari Elmas
Nov 14
CAG5:45 pmCagliari Elmas
32h 35m
1 stop
BOS8:20 pmBoston Logan Intl
$725

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 March 18, 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

Tue 8/4

5:20 pm-7:40 am

1 stop32h 20m

Cagliari Elmas

Sat 11/7

5:45 pm-8:20 pm

1 stop32h 35m

$675

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sun 8/2

8:05 pm-5:45 pm

1 stop15h 40m

Cagliari Elmas

Sat 11/7

5:45 pm-8:20 pm

1 stop32h 35m

$676

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sat 8/1

8:05 pm-5:45 pm

1 stop15h 40m

Cagliari Elmas

Sat 11/7

5:45 pm-9:37 am

2 stops45h 52m

$681

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Mon 9/14

9:40 pm-8:25 am

1 stop28h 45m

Cagliari Elmas

Wed 9/23

10:00 am-7:55 pm

1 stop15h 55m

$683

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Wed 8/26

2:19 pm-5:45 pm

2 stops21h 26m

Cagliari Elmas

Mon 8/31

9:05 pm-3:10 pm

1 stop24h 05m

$685
Quickest round-trip

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Wed 8/26

8:05 pm-5:45 pm

1 stop15h 40m

Cagliari Elmas

Mon 8/31

9:05 pm-3:10 pm

1 stop24h 05m

$686

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sat 8/1

5:00 pm-6:15 pm

2 stops19h 15m

Cagliari Elmas

Sat 11/7

5:45 pm-2:37 pm

2 stops50h 52m

$696

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Wed 8/26

7:25 pm-5:45 pm

2 stops16h 20m

Cagliari Elmas

Mon 8/31

6:35 pm-8:10 pm

2 stops31h 35m

$699

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Mon 4/27

8:05 pm-5:45 pm

1 stop15h 40m

Cagliari Elmas

Mon 5/4

6:35 pm-5:40 pm

1 stop29h 05m

$702

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

Sun 8/2

8:05 pm-5:05 pm

2 stops15h 00m

Cagliari Elmas

Sat 11/7

5:45 pm-8:20 pm

1 stop32h 35m

$703

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 airlines fly to Cagliari?

Vueling, Lufthansa and SWISS are the top three most popular airlines that fly to Cagliari from Boston according to our data. Vueling is the first choice among our users, with 30% of people opting to fly with this airline when traveling to Cagliari. Keep in mind that there are 4 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

15h 05m

Direct flights

None
The fastest flight from Boston to Cagliari takes 15h 05m
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 05m.

  • 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 $528Free CancellationRating
7.5
1,899 reviews
Search SWISS flights
DeltaPriceFrom $555Free CancellationRating
7.9
8,287 reviews
Search Delta flights
VuelingPriceFrom $588Free CancellationRating
7.2
1,252 reviews
Search Vueling flights
LufthansaPriceFrom $619Free CancellationRating
6.8
7,858 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

Why use momondo?

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.

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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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