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Cheap flights from Boston to Lisbon from C$ 507

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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LIS
14 Feb — 21 Feb1
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 85 days in advance, depart on a Tuesday or Friday and return on a Monday

Cheap 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 15 January 2026.

Round-trip from

C$ 693

One-way from

C$ 507

Popular in

June

Cheapest in

November

Average price

C$ 948

Good round-trip deal

C$ 760 or less
LEVEL
  • LEVEL
  • 4/5-11/5
  • 2 total stops
  • 42h 05m total
  • Boston to Lisbon
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TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 10/3
  • Nonstop
  • 6h 30m total
  • Boston to Lisbon
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (C$ 218 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 42 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Price to beat on a round-trip flight from Boston Logan Intl to Lisbon Humberto Delgado.
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Find 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 15 January 2026.

Mon 4/510:50 p.m.
BOS
-
LIS
1 stop13h 20m
LEVEL
Mon 11/59:20 p.m.
LIS
-
BOS
1 stop28h 45m
LEVEL
Deal found 14/1C$ 693
Fri 20/26:05 p.m.
BOS
-
LIS
Nonstop6h 30m
TAP AIR PORTUGAL
Sat 28/25:15 p.m.
LIS
-
BOS
Nonstop7h 55m
TAP AIR PORTUGAL
Deal found 15/1C$ 695
Thu 19/23:35 p.m.
BOS
-
LIS
1 stop11h 20m
United Airlines
Wed 11/36:10 a.m.
LIS
-
BOS
1 stop17h 25m
United Airlines
Deal found 15/1C$ 698
Fri 20/28:40 p.m.
BOS
-
LIS
Nonstop6h 20m
Virgin Atlantic
Fri 27/210:00 a.m.
LIS
-
BOS
1 stop13h 21m
Virgin Atlantic
Deal found 14/1C$ 699
Fri 20/28:40 p.m.
BOS
-
LIS
Nonstop6h 20m
Delta
Tue 24/25:30 a.m.
LIS
-
BOS
1 stop15h 50m
Delta
Deal found 15/1C$ 700
Fri 20/28:40 p.m.
BOS
-
LIS
Nonstop6h 20m
Delta
Sat 28/25:00 a.m.
LIS
-
BOS
1 stop13h 25m
Delta
Deal found 14/1C$ 702
Sun 8/36:15 a.m.
BOS
-
LIS
1 stop23h 05m
United Airlines
Thu 19/36:10 a.m.
LIS
-
BOS
1 stop17h 25m
United Airlines
Deal found 14/1C$ 703
Fri 20/29:45 a.m.
BOS
-
LIS
2 stops17h 25m
United Airlines
Fri 27/26:10 a.m.
LIS
-
BOS
1 stop17h 25m
United Airlines
Deal found 14/1C$ 705
Thu 19/210:03 a.m.
BOS
-
LIS
1 stop17h 52m
Delta
Sat 7/35:30 a.m.
LIS
-
BOS
1 stop13h 00m
Delta
Deal found 15/1C$ 706
Tue 10/310:15 a.m.
BOS
-
LIS
1 stop19h 05m
United Airlines
Fri 20/35:00 a.m.
LIS
-
BOS
1 stop13h 10m
United Airlines
Deal found 14/1C$ 709
Fri 20/24:15 p.m.
BOS
-
LIS
1 stop10h 55m
United Airlines
Wed 25/26:10 a.m.
LIS
-
BOS
2 stops16h 52m
United Airlines
Deal found 14/1C$ 710
Tue 17/212:35 p.m.
BOS
-
LIS
2 stops14h 35m
United Airlines
Tue 3/310:15 a.m.
LIS
-
BOS
2 stops13h 53m
United Airlines
Deal found 15/1C$ 712

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 15 January 2026.
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

Sat 28/2

8:40 p.m.-8:00 a.m.

Nonstop6h 20m

Lisbon Humberto Delgado

Sat 7/3

5:30 a.m.-1:30 p.m.

1 stop13h 00m

C$ 700

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Tue 17/3

9:40 p.m.-8:00 a.m.

Nonstop6h 20m

Lisbon Humberto Delgado

Tue 24/3

4:50 p.m.-2:20 p.m.

1 stop25h 30m

C$ 702

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Mon 16/2

8:40 p.m.-1:20 p.m.

1 stop11h 40m

Lisbon Humberto Delgado

Tue 3/3

11:20 a.m.-12:53 p.m.

2 stops30h 33m

C$ 703

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Tue 17/2

12:35 p.m.-8:10 a.m.

2 stops14h 35m

Lisbon Humberto Delgado

Tue 3/3

10:15 a.m.-7:08 p.m.

2 stops13h 53m

C$ 712

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Thu 5/3

5:35 p.m.-4:25 p.m.

2 stops17h 50m

Lisbon Humberto Delgado

Sun 8/3

6:00 p.m.-4:50 p.m.

1 stop26h 50m

C$ 725

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Mon 20/4

8:25 p.m.-2:35 p.m.

1 stop13h 10m

Lisbon Humberto Delgado

Thu 30/4

12:45 p.m.-3:21 p.m.

Nonstop7h 36m

C$ 728

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Fri 20/3

10:35 p.m.-2:50 p.m.

1 stop12h 15m

Lisbon Humberto Delgado

Thu 26/3

12:55 p.m.-10:55 p.m.

1 stop14h 00m

C$ 773

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sun 10/5

5:40 p.m.-8:40 p.m.

1 stop22h 00m

Lisbon Humberto Delgado

Fri 15/5

6:25 p.m.-3:35 p.m.

1 stop26h 10m

C$ 789

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sun 19/4

8:05 p.m.-10:45 p.m.

1 stop21h 40m

Lisbon Humberto Delgado

Sun 26/4

11:25 a.m.-10:04 a.m.

2 stops27h 39m

C$ 814

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Thu 19/2

10:03 a.m.-8:55 a.m.

1 stop17h 52m

Lisbon Humberto Delgado

Sat 28/2

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

Nonstop7h 50m

C$ 830

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/1

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 9 January 2026.

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 85 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, July is the cheapest month in which you can book a flight from Boston to Lisbon (average of C$ 489). Flying from Boston to Lisbon in June is currently the most expensive (average of C$ 825). 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 15 January 2026.

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.

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 15 January 2026.
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
2,121 reviews
Check prices

Crew

7.8

Entertainment

6.3

Food

6.2

Overall

7.1

Boarding

7.0

Comfort

7.1

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
2,121 reviews
TAP AIR PORTUGAL
7.1
Good
2,121 reviews
Check prices

Crew

7.8

Entertainment

6.3

Food

6.2

Overall

7.1

Boarding

7.0

Comfort

7.1

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 2 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 19 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$ 699, KLM can have you in Lisbon from Boston in 6h 20m. 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$ 750, was found to be the cheapest airline from Boston to Lisbon.. TAP AIR PORTUGAL is currently priced 30% 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: Emirates (85%), JetBlue (85%), TAP AIR PORTUGAL (85%).

  • What are the cheapest flights from Boston to Lisbon?

    While on average a flight from Boston to Lisbon is generally C$ 857, our data shows the cheapest flight currently is C$ 568. When looking at the most popular route, (Boston Logan Intl - Lisbon Humberto Delgado), you can expect to pay C$ 703 for that flight.

  • 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, July is the cheapest month in which you can book a flight from Boston to Lisbon (average of C$ 489). Flying from Boston to Lisbon in June is currently the most expensive (average of C$ 825). 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
Fátima
Costa da Caparica
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 15 January 2026.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapestC$ 750AverageC$ 1,103FlexibilityNo 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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