HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Sibiu

$522+ Cheap flights from Boston (BOS) to Sibiu (SBZ)

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 11/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SBZ
nov. 28 — déc. 51
ven. 11/28
ven. 12/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Boston to Sibiu with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Boston to Sibiu

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Sibiu (SBZ). 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 octobre 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$461
(FlightHub)

Popular in

May

Cheapest in

August

Average price

$795
Provider with most accurate pricing for Boston Logan Intl-Sibiu flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Sibiu flights.
Search Deals
From Boston Logan Intl to Sibiu
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($306 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($67 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Find flight deals from Boston to Sibiu

Cheapest flights from Boston to Sibiu
Explore the most affordable flight options available from Boston to Sibiu. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octobre 29, 2025.

This Expedia deal was found by Cheapflights users on 10/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 11/2711:59 amBOS - SBZ
2 stops20h 26mMultiple Airlines
jeu. 12/46:00 amSBZ - BOS
2 stops23h 37mMultiple Airlines
Deal found 10/28$522
This United Airlines deal was found by Cheapflights users on 10/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 11/279:40 amBOS - SBZ
2 stops21h 05mUnited Airlines
jeu. 12/46:00 amSBZ - BOS
1 stop19h 35mUnited Airlines
Deal found 10/29$590
This Ovago deal was found by Cheapflights users on 10/29. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 11/278:40 pmBOS - SBZ
1 stop10h 05mLufthansa
jeu. 12/46:00 amSBZ - BOS
1 stop19h 35mLufthansa
Deal found 10/29$798
This United Airlines deal was found by Cheapflights users on 10/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 12/1210:10 pmBOS - SBZ
2 stops32h 35mUnited Airlines
ven. 12/196:00 amSBZ - BOS
1 stop19h 35mUnited Airlines
Deal found 10/28$945
This Mytrip deal was found by Cheapflights users on 10/28. 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.
ven. 12/127:50 pmBOS - SBZ
3 stops21h 25mMultiple Airlines
ven. 12/196:00 amSBZ - BOS
3 stops21h 00mMultiple Airlines
Deal found 10/28$971
This Gurufare deal was found by Cheapflights users on 10/28. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 12/128:40 pmBOS - SBZ
1 stop14h 35mLufthansa
ven. 12/196:00 amSBZ - BOS
1 stop19h 35mLufthansa
Deal found 10/28$1,775

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Sibiu 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 octobre 29, 2025.
Use the filters below to find and compare flights from Boston to Sibiu that are best for you.

Fly from

Boston

Fly to

Sibiu

Route

Depart

Return

Price

BostonSibiu

BOS - SBZ

BOSSBZ

Boston Logan Intl

jeu. 11/27

11:59 am-3:25 pm

2 stops20h 26m

Sibiu

jeu. 12/4

6:00 am-10:37 pm

2 stops23h 37m

$522

BostonSibiu

BOS - SBZ

BOSSBZ

Boston Logan Intl

jeu. 11/27

11:15 am-1:45 pm

2 stops19h 30m

Sibiu

jeu. 12/4

6:00 am-6:35 pm

1 stop19h 35m

$590

BostonSibiu

BOS - SBZ

BOSSBZ

Boston Logan Intl

mer. 1/21

8:40 pm-6:15 pm

1 stop14h 35m

Sibiu

dim. 1/25

4:05 pm-5:14 pm

2 stops32h 09m

$593

BostonSibiu

BOS - SBZ

BOSSBZ

Boston Logan Intl

mer. 1/21

6:00 am-6:15 pm

2 stops29h 15m

Sibiu

dim. 1/25

2:30 pm-9:52 pm

2 stops14h 22m

$603

BostonSibiu

BOS - SBZ

BOSSBZ

Boston Logan Intl

jeu. 11/27

8:40 pm-1:45 pm

1 stop10h 05m

Sibiu

jeu. 12/4

6:00 am-6:35 pm

1 stop19h 35m

$798

BostonSibiu

BOS - SBZ

BOSSBZ

Boston Logan Intl

ven. 12/12

10:10 pm-1:45 pm

2 stops32h 35m

Sibiu

ven. 12/19

6:00 am-6:35 pm

1 stop19h 35m

$945

BostonSibiu

BOS - SBZ

BOSSBZ

Boston Logan Intl

ven. 12/12

7:50 pm-12:15 am

3 stops21h 25m

Sibiu

ven. 12/19

6:00 am-8:00 pm

3 stops21h 00m

$971

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Compare providers for flights from Boston to Sibiu

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Sibiu in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boston-Sibiu flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Boston-Sibiu flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Boston-Sibiu flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Sibiu flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Sibiu flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Boston to Sibiu

Have a flexible travel schedule? Discover the best time to fly to Sibiu 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 Sibiu

What is the cheapest month to book a flight from Boston to Sibiu?

Currently, November is the cheapest month in which you can book a flight from Boston to Sibiu (average of $387). Flying from Boston to Sibiu in June is currently the most expensive (average of $870). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Sibiu

Get insights into the airlines that provide service to Sibiu. 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 Sibiu. Reviews last updated octobre 29, 2025.
Read reviews from past customers who have flown Lufthansa from Boston to Sibiu. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Lufthansa
6.8
Okay
7,541 reviews

Overall

6.8

Comfort

6.8

Entertainment

6.4

Food

6.3

Boarding

7.0

Crew

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

SFO - FRA

Convenient flight to my destination. Good entertainment options on board. I was seated close to some people who had noisy children which made sleeping a bit challenging.
Lufthansa
6.8
Okay
7,541 reviews
Lufthansa
6.8
Okay
7,541 reviews

Overall

6.8

Comfort

6.8

Entertainment

6.4

Food

6.3

Boarding

7.0

Crew

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

SFO - FRA

Convenient flight to my destination. Good entertainment options on board. I was seated close to some people who had noisy children which made sleeping a bit challenging.

Related info for your journey

Find useful and relevant information for your journey from Boston to Sibiu. 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 Sibiu?

    United Airlines can get you from Boston to Sibiu in just under 19h 30m. Your travel time can differ by up to . The distance between Boston and Sibiu is about 4424 mi.

  • What is the cheapest airline to fly from Boston to Sibiu round-trip?

    Currently priced at $585, Lufthansa will fly you from Boston to Sibiu and back. In addition to Lufthansa, many other airlines offer competitively priced options for your trip. Lufthansa is currently priced 41% below the average price you’ll pay for this route.

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

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

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

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

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

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

  • What is the cheapest month to book a flight from Boston to Sibiu?

    Currently, November is the cheapest month in which you can book a flight from Boston to Sibiu (average of $387). Flying from Boston to Sibiu in June is currently the most expensive (average of $870). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Boston to Sibiu

Discover the top airline that operate flights from Boston to Sibiu. 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 octobre 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$585Average$899FlexibilityNo cancel feeOn-time76%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.