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Cheap flights from Boston to Lisbon from C$ 434

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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LIS
8 Jan — 15 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Boston Logan Intl to Lisbon Humberto Delgado are usually found in November or February, booked 58 days in advance, depart on a Thursday or Wednesday and return on a Monday

Cheap flight deals from Boston to Lisbon

Enter your travel dates to find the best prices.

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 9 December 2025.

Wed 31/129:35 p.m.BOS - LIS
1 stop12h 15mBritish Airways
Fri 9/16:45 p.m.LIS - BOS
1 stop32h 10mBritish Airways
Deal found 7/12C$ 1,025
Tue 30/121:22 p.m.BOS - LIS
2 stops17h 43mBritish Airways
Thu 8/110:40 a.m.LIS - BOS
1 stop16h 15mBritish Airways
Deal found 7/12C$ 1,261
Sun 28/129:35 p.m.BOS - LIS
1 stop15h 10mBritish Airways
Thu 8/112:55 p.m.LIS - BOS
1 stop14h 00mBritish Airways
Deal found 7/12C$ 1,290
Tue 30/127:50 p.m.BOS - LIS
2 stops15h 35mIcelandair
Wed 7/17:05 a.m.LIS - BOS
2 stops15h 45mIcelandair
Deal found 7/12C$ 1,326
Tue 30/1210:50 a.m.BOS - LIS
2 stops20h 15mBritish Airways
Sat 10/112:55 p.m.LIS - BOS
1 stop14h 00mBritish Airways
Deal found 7/12C$ 1,344
Sun 28/129:35 p.m.BOS - LIS
1 stop12h 15mBritish Airways
Sat 10/16:40 p.m.LIS - BOS
1 stop24h 40mBritish Airways
Deal found 7/12C$ 1,373
Wed 31/127:50 p.m.BOS - LIS
2 stops14h 50mIcelandair
Thu 8/14:05 p.m.LIS - BOS
2 stops30h 45mIcelandair
Deal found 7/12C$ 1,442
Mon 22/127:10 p.m.BOS - LIS
1 stop14h 45mJetBlue
Sun 8/211:30 a.m.LIS - BOS
Nonstop8h 05mJetBlue
Deal found 7/12C$ 1,445
Wed 31/127:50 p.m.BOS - LIS
2 stops14h 50mIcelandair
Wed 7/17:05 a.m.LIS - BOS
2 stops15h 45mIcelandair
Deal found 7/12C$ 1,467
Tue 30/123:40 p.m.BOS - LIS
1 stop12h 40mUnited Airlines
Wed 7/17:50 p.m.LIS - BOS
2 stops27h 00mUnited Airlines
Deal found 7/12C$ 1,542
Sun 28/129:30 a.m.BOS - LIS
1 stop19h 45mUnited Airlines
Wed 7/17:50 p.m.LIS - BOS
2 stops27h 00mUnited Airlines
Deal found 7/12C$ 1,543

Find flight deals from Boston to Lisbon

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Lisbon (LIS). 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 9 December 2025.

Round-trip from

C$ 700

One-way from

C$ 434

Popular in

June

Cheapest in

November

Average price

C$ 1,202
Delta
  • Delta
  • 20/2-23/2
  • 2 total stops
  • 31h 48m total
  • Boston to Lisbon
Search Deals
LEVEL
  • LEVEL
  • 12/5
  • 1 total stop
  • 17h 40m total
  • Boston to Lisbon
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 227 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Lisbon 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 629,999 searches. Data last updated 9 December 2025.
Use the filters below to find and compare flights from Boston to Lisbon that are best for you.

Fly from

Boston

Fly to

Lisbon

Route

Depart

Return

Price

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Tue 17/2

6:30 p.m.-11:20 a.m.

1 stop11h 50m

Lisbon Humberto Delgado

Wed 25/2

11:15 a.m.-2:05 p.m.

Nonstop7h 50m

C$ 705

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Tue 17/2

6:30 p.m.-5:30 p.m.

1 stop18h 00m

Lisbon Humberto Delgado

Mon 23/2

10:00 a.m.-10:48 p.m.

1 stop17h 48m

C$ 719

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Thu 19/2

5:35 p.m.-3:50 p.m.

1 stop17h 15m

Lisbon Humberto Delgado

Wed 25/2

7:05 a.m.-10:51 p.m.

2 stops20h 46m

C$ 722

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Tue 10/3

1:55 p.m.-4:05 p.m.

2 stops22h 10m

Lisbon Humberto Delgado

Mon 16/3

5:20 p.m.-8:39 p.m.

2 stops31h 19m

C$ 729

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sun 25/1

1:00 p.m.-4:05 p.m.

2 stops22h 05m

Lisbon Humberto Delgado

Sun 1/2

7:00 p.m.-10:22 p.m.

2 stops32h 22m

C$ 756

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Thu 15/1

1:00 p.m.-10:35 a.m.

2 stops16h 35m

Lisbon Humberto Delgado

Wed 21/1

5:00 a.m.-6:54 p.m.

2 stops18h 54m

C$ 761

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Mon 2/3

5:35 p.m.-9:30 p.m.

1 stop22h 55m

Lisbon Humberto Delgado

Sat 14/3

7:05 a.m.-10:54 p.m.

2 stops19h 49m

C$ 799

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sun 8/3

6:35 p.m.-4:30 p.m.

1 stop17h 55m

Lisbon Humberto Delgado

Sat 14/3

7:05 a.m.-4:50 p.m.

1 stop13h 45m

C$ 810

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Thu 12/3

9:00 p.m.-10:40 a.m.

1 stop33h 40m

Lisbon Humberto Delgado

Wed 25/3

4:05 p.m.-7:05 p.m.

1 stop31h 00m

C$ 827

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sat 14/2

3:51 p.m.-9:05 a.m.

1 stop12h 14m

Lisbon Humberto Delgado

Sat 21/2

10:40 a.m.-5:06 p.m.

1 stop11h 26m

C$ 838

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/12

Showing 1-10 of 23 results
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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.
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 Lisbon

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

Use this chart to determine the optimal time to book a round-trip flight from Boston to Lisbon. Price data was last updated on 5 December 2025.

The price you pay for your flight from Boston to Lisbon may vary depending on when you book. For the best chance of a lower fare, look to book 58 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, February is the cheapest month in which you can book a flight from Boston to Lisbon (average of C$ 479). Flying from Boston to Lisbon in June is currently the most expensive (average of C$ 820). 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.

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 9 December 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Boston to Lisbon as you normally would.

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

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 9 December 2025.
Get a feel of what it's like to fly with TAP AIR PORTUGAL 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.
TAP AIR PORTUGAL
7.1
Good
2,085 reviews
Check prices

Food

6.2

Comfort

7.1

Entertainment

6.3

Boarding

7.0

Overall

7.1

Crew

7.8

Reviews

1 / 20
8.0
Excellent

Michael,Dec 2025

FNC - LIS

Long wait standing after checking in at the gate Limited juice selection.
TAP AIR PORTUGAL
7.1
Good
2,085 reviews
TAP AIR PORTUGAL
7.1
Good
2,085 reviews
Check prices

Food

6.2

Comfort

7.1

Entertainment

6.3

Boarding

7.0

Overall

7.1

Crew

7.8

Reviews

1 / 20
8.0
Excellent

Michael,Dec 2025

FNC - LIS

Long wait standing after checking in at the gate Limited juice selection.

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?

    Booking a flight from Boston Logan Intl (BOS) to Lisbon Humberto Delgado (LIS) is your only option if you wish to fly from Boston to Lisbon. On a typical day, there are 7 flights from Logan Intl to Humberto Delgado, all of which are around 6h 30m for a nonstop flight. You can also purchase a plane ticket from 1 airline when you book a flight from Logan Intl to Lisbon.

  • How popular is this Boston to Lisbon flight route?

    The Boston Logan Intl to Lisbon Humberto Delgado flight path was viewed by 20 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Boston to Lisbon?

    For as low as C$ 705, Delta can have you in Lisbon from Boston in 11h 50m. The distance from Boston to Lisbon is about 5121 km. This flight may include one or multiple stops.

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

    TAP AIR PORTUGAL, at C$ 929, was found to be the cheapest airline from Boston to Lisbon.. TAP AIR PORTUGAL is currently priced 13% below the average price you’ll pay for this route.

  • What are the most reliable airlines from Boston to Lisbon?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Boston to Lisbon on time: JetBlue (84%), TAP AIR PORTUGAL (84%), Emirates (80%).

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

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

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

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

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

    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.

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

    Currently, February is the cheapest month in which you can book a flight from Boston to Lisbon (average of C$ 479). Flying from Boston to Lisbon in June is currently the most expensive (average of C$ 820). 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

Travelling to a place near Lisbon?

Book flights to Lisbon if you plan to visit one of these locations
Costa da Caparica
Fátima
Sintra
Óbidos
Setúbal

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Boston to Lisbon

Discover the top airline that operate flights from Boston to Lisbon. 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 629,999 searches. Data last updated 9 December 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapestC$ 929AverageC$ 1,097FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights makes it easy to find Boston to Lisbon flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Cheapflights helps you find that perfect flight to Lisbon from Boston by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Certainly. Search results for flights to Lisbon from Boston shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

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.

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