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Sibiu

$555+ 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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SBZ
Feb 13 — Feb 201
Fri 2/13
Fri 2/20
1 adult, Economy
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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 January 14, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$555
(KAYAK)
Provider with most accurate pricing for Boston Logan Intl-Sibiu flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Sibiu flights.
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From Boston Logan Intl to Sibiu
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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 January 14, 2026.

This KAYAK deal was found by Cheapflights users on 1/14. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/148:05 pm
BOS
-
SBZ
1 stop10h 15m
Lufthansa
Tue 5/266:15 am
SBZ
-
BOS
1 stop18h 25m
Lufthansa
Deal found 1/14$555
This United Airlines deal was found by Cheapflights users on 1/14. 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.
Tue 4/148:05 pm
BOS
-
SBZ
1 stop10h 15m
United Airlines
Tue 5/266:15 am
SBZ
-
BOS
2 stops34h 39m
United Airlines
Deal found 1/14$572
This United Airlines deal was found by Cheapflights users on 1/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/48:40 pm
BOS
-
SBZ
1 stop14h 35m
United Airlines
Sun 3/86:00 am
SBZ
-
BOS
1 stop19h 35m
United Airlines
Deal found 1/11$589
This KAYAK deal was found by Cheapflights users on 1/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/148:05 pm
BOS
-
SBZ
1 stop10h 15m
Multiple Airlines
Mon 5/251:40 pm
SBZ
-
BOS
2 stops33h 00m
Multiple Airlines
Deal found 1/13$591

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 January 14, 2026.
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

Tue 4/14

8:05 pm-1:20 pm

1 stop10h 15m

Sibiu

Tue 5/26

6:15 am-5:40 pm

1 stop18h 25m

$555

BostonSibiu

BOS - SBZ

BOSSBZ

Boston Logan Intl

Tue 4/14

8:05 pm-1:20 pm

1 stop10h 15m

Sibiu

Tue 5/26

6:15 am-9:54 am

2 stops34h 39m

$572

BostonSibiu

BOS - SBZ

BOSSBZ

Boston Logan Intl

Wed 3/4

8:40 pm-6:15 pm

1 stop14h 35m

Sibiu

Sun 3/8

6:00 am-6:35 pm

1 stop19h 35m

$589

BostonSibiu

BOS - SBZ

BOSSBZ

Boston Logan Intl

Tue 4/14

8:05 pm-1:20 pm

1 stop10h 15m

Sibiu

Mon 5/25

1:40 pm-3:40 pm

2 stops33h 00m

$591

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/14

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 January.
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 January 14, 2026.
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
7,711 reviews

Crew

7.6

Boarding

7.0

Comfort

6.8

Overall

6.8

Food

6.3

Entertainment

6.4

Reviews

1 / 20
6.0
Good

Anonymous,Dec 2025

SFO - MUC

The coordination between United and Lufthansa teams is poor and confusing.
Lufthansa
6.8
Okay
7,711 reviews
Lufthansa
6.8
Okay
7,711 reviews

Crew

7.6

Boarding

7.0

Comfort

6.8

Overall

6.8

Food

6.3

Entertainment

6.4

Reviews

1 / 20
6.0
Good

Anonymous,Dec 2025

SFO - MUC

The coordination between United and Lufthansa teams is poor and confusing.

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?

    Lufthansa and United Airlines can get you from Boston to Sibiu in just under 10h 15m. 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.

  • 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 January 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$585Average$804FlexibilityNo cancel feeOn-time76%

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