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Cagliari

$436+ Cheap flights from Boston (BOS) to Cagliari (CAG)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CAG
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
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Cheap flight deals from Boston to Cagliari

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Cagliari (CAG). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated septiembre 11, 2025.

Round-trip from

$436
(Kiwi.com)

Popular in

February

Cheapest in

January

Average price

$997
From Boston Logan Intl to Cagliari Elmas
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Highest demand for flights based on searches. 1% potential increase in price ($9 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($47 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Boston to Cagliari

Cheapest flights from Boston to Cagliari
Explore the most affordable flight options available from Boston to Cagliari. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 11, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/2311:00 pmBOS - CAG
1 stop27h 30mMultiple Airlines
sáb. 11/81:20 pmCAG - BOS
1 stop13h 35mMultiple Airlines
Deal found 9/10$436
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/126:10 pmBOS - CAG
2 stops19h 30mMultiple Airlines
mar. 10/219:30 pmCAG - BOS
1 stop29h 45mMultiple Airlines
Deal found 9/10$490
This Iberia deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/2311:00 pmBOS - CAG
1 stop27h 30mIberia
sáb. 11/81:20 pmCAG - BOS
1 stop13h 35mIberia
Deal found 9/10$553
This Mytrip deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/2610:50 pmBOS - CAG
2 stops13h 40mMultiple Airlines
dom. 11/28:30 amCAG - BOS
2 stops34h 55mMultiple Airlines
Deal found 9/11$636
This Mytrip deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/259:40 pmBOS - CAG
2 stops20h 35mMultiple Airlines
sáb. 11/15:45 amCAG - BOS
2 stops18h 50mMultiple Airlines
Deal found 9/9$680

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated septiembre 11, 2025.
Use the filters below to find and compare flights from Boston to Cagliari that are best for you.

Fly from

Boston

Fly to

Cagliari

Route

Depart

Return

Price

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

dom. 10/12

6:10 pm-7:40 pm

2 stops19h 30m

Cagliari Elmas

mar. 10/21

9:30 pm-9:15 pm

1 stop29h 45m

$499

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

jue. 10/23

3:15 pm-6:35 pm

2 stops21h 20m

Cagliari Elmas

sáb. 11/8

5:45 pm-8:20 pm

1 stop32h 35m

$528

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

jue. 10/23

11:00 pm-8:30 am

1 stop27h 30m

Cagliari Elmas

sáb. 11/8

1:20 pm-8:55 pm

1 stop13h 35m

$553

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

dom. 10/26

10:50 pm-5:30 pm

2 stops13h 40m

Cagliari Elmas

dom. 11/2

8:30 am-1:25 pm

2 stops34h 55m

$636

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

sáb. 10/25

9:40 pm-11:15 pm

2 stops20h 35m

Cagliari Elmas

sáb. 11/1

5:45 am-7:35 pm

2 stops18h 50m

$680

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

mar. 10/21

8:50 pm-8:10 pm

2 stops17h 20m

Cagliari Elmas

dom. 10/26

6:00 am-10:00 pm

2 stops21h 00m

$768

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

mar. 9/16

9:40 pm-7:40 am

1 stop28h 00m

$445

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

dom. 9/21

5:05 pm-8:25 pm

1 stop21h 20m

$445

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

dom. 9/21

8:05 pm-6:40 pm

2 stops16h 35m

$479

BostonCagliari

BOS - CAG

BOSCAG

Boston Logan Intl

sáb. 9/20

3:15 pm-4:25 pm

2 stops19h 10m

$555

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 17 results
1
2

Best time to book a flight from Boston to Cagliari

Have a flexible travel schedule? Discover the best time to fly to Cagliari from Boston with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Boston to Cagliari

What is the cheapest time of day to fly from BOS to CAG?

Find hourly flight availability from Boston to Cagliari. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 11, 2025.

When flying from Boston to Cagliari, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 28% versus a flight at noon.

How much does it cost to fly round-trip from Boston to Cagliari?

Reviews of airlines servicing Cagliari

Get insights into the airlines that provide service to Cagliari. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Cagliari. Reviews last updated septiembre 11, 2025.
Read through reviews of airlines operating flights from Boston to Cagliari, such as SWISS, Vueling, and Lufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
SWISS
7.5
Good
1,731 reviews

Overall

7.5

Comfort

7.4

Boarding

7.7

Crew

8.2

Food

7.1

Entertainment

6.8

Reviews

1 / 20
6.0
Good

Madhukar,Nov 2024

ZRH - BOM

Indian Veg food selection and quality definitely needs a better chef.
SWISS
7.5
Good
1,731 reviews
SWISS
7.5
Good
1,731 reviews

Overall

7.5

Comfort

7.4

Boarding

7.7

Crew

8.2

Food

7.1

Entertainment

6.8

Reviews

1 / 20
6.0
Good

Madhukar,Nov 2024

ZRH - BOM

Indian Veg food selection and quality definitely needs a better chef.
Vueling
7.1
Good
1,185 reviews
SWISS
7.5
Good
1,731 reviews

Overall

7.5

Comfort

7.4

Boarding

7.7

Crew

8.2

Food

7.1

Entertainment

6.8

Reviews

1 / 20
6.0
Good

Madhukar,Nov 2024

ZRH - BOM

Indian Veg food selection and quality definitely needs a better chef.
Lufthansa
6.8
Okay
7,409 reviews
SWISS
7.5
Good
1,731 reviews

Overall

7.5

Comfort

7.4

Boarding

7.7

Crew

8.2

Food

7.1

Entertainment

6.8

Reviews

1 / 20
6.0
Good

Madhukar,Nov 2024

ZRH - BOM

Indian Veg food selection and quality definitely needs a better chef.

Related info for your journey

Find useful and relevant information for your journey from Boston to Cagliari. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Boston to Cagliari?

    For as low as $553, Iberia can have you in Cagliari from Boston in 27h 30m. The distance between Boston and Cagliari is about 4027 mi.

  • What are the cheapest airlines flying from Boston to Cagliari round-trip?

    Our cheapest airline available from Boston to Cagliari is SWISS. Our recent data shows that you can find tickets from as low as $525 on this airline. Additional options worth looking into are Vueling and Lufthansa, starting at $573 and $608 round-trip. SWISS is priced at 41% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Boston to Cagliari one-way?

    The cheapest airline one-way is SWISS, with whom users have recently found tickets for as low as $445. However, be on the lookout for offers from Lufthansa and Delta, as they are both options that can get you from Boston to Cagliari for a low price.

  • Can I find deals for flights from Boston to Cagliari that include hotel bookings?

    Yes. In addition to deals on Boston to Cagliari flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Cagliari?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Cagliari.

  • Can I find deals for business class flights from Boston to Cagliari?

    Yes. Cheapflights offers flight deals from Boston to Cagliari by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Cagliari?

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

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Alternative routes for Boston to Cagliari

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Boston to Cagliari

Discover the top 3 airlines that operate flights from Boston to Cagliari. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$525Average$662FlexibilityNo cancel feeOn-time79%
VuelingCheapest$573Average$700FlexibilityNo cancel feeOn-time88%
LufthansaCheapest$608Average$1,111FlexibilityNo cancel feeOn-time76%

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