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

Currently priced at $602, United Airlines will fly you from Boston to Sibiu and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Lufthansa for as low as $630. United Airlines is currently priced 41% below the average price you’ll pay for this route.

What is the cheapest day to fly from Boston to Sibiu?

Travelers seeking maximum savings on their Boston to Sibiu flight should consider departing on Friday evenings when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Sibiu ranges from 0.8 - 4.3 inches per month. June is typically the wettest month, when rainfall can reach 4.3 in. January is typically the driest time to visit Sibiu when rainfall is around 0.8 in.

If weather is an important factor for your trip to Sibiu, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 24.8 F).

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

It’s generally more expensive to depart on a Thursday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

What is the cheapest month to fly from Boston to Sibiu?

Our data shows that August tends to be the cheapest month to fly to Sibiu from Boston. Users have commonly found prices around $1,036 for the month, but tickets can be as low as $547. Due to multiple factors, prepare for potentially higher prices in May.

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

When flying from Boston to Sibiu, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

$585+ Flights from Boston to Sibiu

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Cheap flight deals from Boston to Sibiu

Round-trip from	$602 (United Airlines)
Popular in	May
Cheapest in	August

From Boston Logan Intl to Sibiu

Search Deals

Highest demand for flights based on searches. 20% potential increase in price ($269 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease ($56 potential savings vs. average RT price).

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 July 1, 2025.

Wed 9/176:00 amBOS - SBZ

2 stops35h 55mMultiple Airlines

Wed 10/156:05 amSBZ - BOS

1 stop18h 35mMultiple Airlines

Deal found 6/29

$585

Wed 9/1710:40 amBOS - SBZ

2 stops23h 40mUnited Airlines

Wed 10/156:05 amSBZ - BOS

2 stops25h 45mUnited Airlines

Deal found 6/30

$602

Wed 9/178:05 pmBOS - SBZ

1 stop14h 15mLufthansa

Wed 10/156:05 amSBZ - BOS

1 stop18h 35mLufthansa

Deal found 6/29

$610

Best flights from Boston to Sibiu
Discover carefully curated flight deals from Boston to Sibiu that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 1, 2025.

Wed 9/1710:40 amBOS - SBZ

2 stops23h 40mUnited Airlines

Wed 10/156:05 amSBZ - BOS

2 stops25h 45mUnited Airlines

Deal found 6/30

$602

Wed 9/1710:00 pmBOS - SBZ

2 stops19h 55mLufthansa

Wed 10/156:05 amSBZ - BOS

1 stop18h 35mLufthansa

Deal found 6/30

$630

Cheapflights Fare Finder

Use the filters below to find and compare flights from Boston to Sibiu that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonSibiu

BOS - SBZ

BOSSBZ

Boston Logan Intl

Wed 9/17

6:00 am-12:55 am

2 stops35h 55m

Sibiu

Wed 10/15

6:05 am-5:40 pm

1 stop18h 35m

$585

BostonSibiu

BOS - SBZ

BOSSBZ

Boston Logan Intl

Wed 9/17

10:40 am-5:20 pm

2 stops23h 40m

Sibiu

Wed 10/15

6:05 am-12:50 am

2 stops25h 45m

$602

BostonSibiu

BOS - SBZ

BOSSBZ

Boston Logan Intl

Wed 9/17

8:05 pm-5:20 pm

1 stop14h 15m

Sibiu

Wed 10/15

6:05 am-5:40 pm

1 stop18h 35m

$610

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

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.

Reviews of airlines servicing Sibiu

Read reviews from past customers who have flown United Airlines and 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.

United Airlines

7.4

Good

8,858 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

United Airlines

7.4

Good

8,858 reviews

United Airlines

7.4

Good

8,858 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Lufthansa

6.8

Okay

7,203 reviews

United Airlines

7.4

Good

8,858 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

What are the cheapest airlines flying from Boston to Sibiu round-trip?
Currently priced at $602, United Airlines will fly you from Boston to Sibiu and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Lufthansa for as low as $630. United Airlines 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.

See more FAQs

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Top airline flying from Boston to Sibiu

Airline	Cheapest	Average	Flexibility	On-time
Lufthansa	Cheapest$764	Average$1,009	FlexibilityNo cancel fee	On-time76%

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$585+ 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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Boston to Sibiu with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Boston to Sibiu

Round-trip from

Popular in

Cheapest in

Find flight deals from Boston to Sibiu

Cheapest flights from Boston to SibiuExplore 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 July 1, 2025.

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 July 1, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Boston to Sibiu that are best for you.

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.

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 July 1, 2025.

Read reviews from past customers who have flown United Airlines and 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.

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.

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

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

How can I find direct flights from Boston to Sibiu?

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

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.

Alternative routes for Boston to Sibiu

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Boston to Sibiu

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Book with Flexibility

Travel Smart

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 July 1, 2025.