Question 1

How popular is this Boston to Lisbon flight route?

Accepted Answer

Within the past month, 5 users have taken a look at flights from Boston Logan Intl to Lisbon Humberto Delgado.

Question 2

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

Accepted Answer

Our cheapest airline available from Boston to Lisbon is United Airlines. Our recent data shows that you can find tickets from as low as £367 on this airline. Additional options worth looking into are SWISS and Scandinavian Airlines, starting at £368 and £373 round-trip. United Airlines is 37% cheaper than the average price of flights available within the next 90 days to this destination.

Question 3

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

Accepted Answer

One-way options have recently been found by users for as low as £223 on United Airlines. Other airlines that offer cheap prices include TAP AIR PORTUGAL from £240 and Delta from £242 one-way.

Question 4

How far ahead should I book a flight from Boston to Lisbon?

Accepted Answer

The best time to book flights from Boston to Lisbon is 57 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Question 5

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

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from Boston to Lisbon (average of £101). Flying from Boston to Lisbon in August is currently the most expensive (average of £274). 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.

Question 6

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

Accepted Answer

Travellers seeking maximum savings on their Boston to Lisbon flight should consider departing on Tuesday evenings when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Question 7

Weekly flight availability from Boston to Lisbon

Accepted Answer

The most flights from BOS to LIS are scheduled on a Monday (9 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (2 on average).

Question 8

E

Accepted Answer

In terms of precipitation, rainfall in Lisbon ranges from 6.0 - 122.0 inches per month. December is typically the wettest month, when rainfall can reach 122.0 mm. July is typically the driest time to visit Lisbon when rainfall is around 6.0 mm.

Question 9

E

Accepted Answer

If weather is an important factor for your trip to Lisbon, 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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

Question 10

What are the cheapest flights from Boston to Lisbon?

Accepted Answer

While on average a flight from Boston to Lisbon is generally £618, our data shows the cheapest flight currently is £190. When looking at the most popular route, (Boston Logan Intl - Lisbon Humberto Delgado), you can expect to pay £425 for that flight.

Question 11

What are the most reliable airlines from Boston to Lisbon?

Accepted Answer

Consider KLM (72%), Air France (72%) or Delta (72%) when booking your flight. These represent the most reliable airlines when flying from Boston to Lisbon.

Question 12

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

Accepted Answer

Departing on a Monday is a good option for securing a great price. You can expect to save up to 170% when planning your travel around this day of the week.

Question 13

How far in advance should I book a flight from Boston to Lisbon?

Accepted Answer

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 58 days in advance, which can save you up to 27% on flights from Boston to Lisbon compared to booking the week you need them. Waiting 58 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £604. For sooner than that we have options available in the next 3 days from £876.

Question 14

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

Accepted Answer

February is one of the best times of the year to fly to Lisbon from Boston. Prices for February average £587 per person but you can even find prices for as low as £245. The most expensive prices can be found in the month of June. Opting for a February flight can save you 27% on your journey compared to booking in June

Question 15

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

Accepted Answer

It’s typically best to fly out from Boston to Lisbon at midday. Doing so could potentially save you 2% on the flight price compared to flying in the morning, which is usually more expensive.

Question 16

What airports do I use to fly from Boston to Lisbon?

Accepted Answer

To fly from Boston to Lisbon, you need to book a flight from Logan Intl (BOS) to Humberto Delgado (LIS). Nonstop flights to Lisbon Humberto Delgado from Boston Logan Intl take 6h 20m on average. When it comes time to book airfare, you have a few options: there are 6 outbound flights from Logan Intl to Humberto Delgado offered by 1 airline.

Question 17

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

Accepted Answer

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

Question 18

How can I find direct flights from Boston to Lisbon?

Accepted Answer

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

Question 19

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

Accepted Answer

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

Question 20

How does Cheapflights help users find flights from Boston to Lisbon?

Accepted Answer

Deals for Boston to Lisbon flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Question 21

Why should you use Cheapflights to find cheap flight tickets from Boston to Lisbon?

Accepted Answer

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Lisbon from Boston.

Question 22

Can Cheapflights find flights from Boston to Lisbon with no change fees?

Accepted Answer

Need flexible booking options for your flight to Lisbon from Boston? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Question 23

Can Cheapflights notify me if prices for flights from Boston to Lisbon become cheaper?

Accepted Answer

Not ready to book yet? You can track prices for flights from Boston to Lisbon on Cheapflights with our Price Alert feature and get notified when better prices are available.

Round-trip from	£366
One-way from	£218
Popular in	June
Cheapest in	February
Average price	£662
Good round-trip deal	£445 or less
Good one-way deal	£190 or less

Cheap flights from Boston to Lisbon from £218

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 17/7. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Boston Logan Intl to Lisbon Humberto Delgado are usually found in February or January, booked 57 days in advance, depart on a Tuesday or Friday and return on a Tuesday

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Cheapest flights from Boston to LisbonExplore the most affordable flight options available from Boston to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 July 2025.

Explore the most affordable flight options available from Boston to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 July 2025.

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

Best time to book a flight from Boston to Lisbon

Have a flexible travel schedule? Discover the best time to fly to Lisbon from Boston with our price prediction graph.

Cheapflights Insights

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

How far ahead should I book a flight from Boston to Lisbon?

Use this chart to determine the optimal time to book a return flight from Boston to Lisbon. Price data was last updated on 27 June 2025.

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

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

Find hourly flight availability from Boston to Lisbon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 4 July 2025.

Weekly flight availability from Boston to Lisbon

Explore weekly flight availability from Boston to Lisbon. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 4 July 2025.

Reviews of airlines servicing Lisbon

Get insights into the airlines that provide service to Lisbon. 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 Lisbon. Reviews last updated 4 July 2025.

Get a feel of what it's like to fly with Delta, SWISS, andUnited Airlines from Boston to Lisbon by reading reviews from past customers. Users have also rated airlines 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 Lisbon. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airports do I use to fly from Boston to Lisbon?

How popular is this Boston to Lisbon flight route?

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

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

What are the most reliable airlines from Boston to Lisbon?

What are the cheapest flights from Boston to Lisbon?

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

How can I find direct flights from Boston to Lisbon?

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

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

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How does Cheapflights help users find flights from Boston to Lisbon?

Why should you use Cheapflights to find cheap flight tickets from Boston to Lisbon?

Can Cheapflights find flights from Boston to Lisbon with no change fees?

Can Cheapflights notify me if prices for flights from Boston to Lisbon become cheaper?

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Cheapest flights from Boston to Lisbon
Explore the most affordable flight options available from Boston to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 July 2025.