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Cheap flights from Boston to Lisbon from C$ 432

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 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LIS
28 Feb — 7 Mar1
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 Wednesday or Friday 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 29 January 2026.

Sun 26/45:25 p.m.
BOS
-
LIS
1 stop9h 55m
United Airlines
Tue 5/511:25 a.m.
LIS
-
BOS
1 stop11h 42m
United Airlines
Deal found 27/1C$ 680
Sat 4/45:40 p.m.
BOS
-
LIS
1 stop17h 25m
Multiple Airlines
Sat 11/47:00 a.m.
LIS
-
BOS
2 stops20h 54m
Multiple Airlines
Deal found 27/1C$ 683
Sun 1/38:40 p.m.
BOS
-
LIS
Nonstop6h 20m
Delta
Wed 11/310:00 a.m.
LIS
-
BOS
1 stop12h 27m
Delta
Deal found 28/1C$ 684
Sun 8/39:40 p.m.
BOS
-
LIS
Nonstop6h 20m
Delta
Tue 17/35:30 a.m.
LIS
-
BOS
1 stop13h 00m
Delta
Deal found 27/1C$ 686
Wed 25/28:40 p.m.
BOS
-
LIS
Nonstop6h 20m
Delta
Sun 1/35:00 a.m.
LIS
-
BOS
1 stop13h 20m
Delta
Deal found 27/1C$ 687
Wed 4/310:03 a.m.
BOS
-
LIS
1 stop17h 37m
Virgin Atlantic
Mon 9/310:00 a.m.
LIS
-
BOS
1 stop16h 54m
Virgin Atlantic
Deal found 26/1C$ 688
Wed 4/312:05 p.m.
BOS
-
LIS
2 stops17h 10m
United Airlines
Tue 10/36:10 a.m.
LIS
-
BOS
1 stop17h 25m
United Airlines
Deal found 28/1C$ 690
Tue 7/48:00 p.m.
BOS
-
LIS
1 stop31h 00m
Delta
Fri 17/412:45 p.m.
LIS
-
BOS
Nonstop7h 36m
Delta
Deal found 27/1C$ 691
Mon 13/49:30 a.m.
BOS
-
LIS
2 stops17h 50m
United Airlines
Tue 21/411:25 a.m.
LIS
-
BOS
1 stop11h 32m
United Airlines
Deal found 27/1C$ 694
Sun 1/39:30 a.m.
BOS
-
LIS
1 stop19h 45m
United Airlines
Tue 10/36:10 a.m.
LIS
-
BOS
2 stops20h 27m
United Airlines
Deal found 27/1C$ 695
Mon 13/47:05 p.m.
BOS
-
LIS
1 stop11h 10m
Delta
Tue 21/412:45 p.m.
LIS
-
BOS
Nonstop7h 36m
Delta
Deal found 27/1C$ 696
Tue 7/48:00 p.m.
BOS
-
LIS
1 stop31h 00m
Delta
Thu 16/410:00 a.m.
LIS
-
BOS
1 stop12h 45m
Delta
Deal found 27/1C$ 698

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 29 January 2026.

Round-trip from

C$ 680

One-way from

C$ 432

Popular in

June

Cheapest in

November

Average price

C$ 906

Good round-trip deal

C$ 555 or less
United Airlines
  • United Airlines
  • 26/4-5/5
  • 2 total stops
  • 21h 37m total
  • Boston to Lisbon
Search Deals
Azores Airlines
  • Azores Airlines
  • 5/3
  • 1 total stop
  • 20h 55m total
  • Boston to Lisbon
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 213 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Boston Logan Intl to Lisbon Humberto Delgado.
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 29 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

Tue 3/3

2:20 p.m.-10:15 a.m.

1 stop14h 55m

Lisbon Humberto Delgado

Fri 13/3

6:10 a.m.-7:35 p.m.

1 stop17h 25m

C$ 684

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sun 1/3

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

Nonstop6h 20m

Lisbon Humberto Delgado

Tue 10/3

10:00 a.m.-6:27 p.m.

1 stop12h 27m

C$ 684

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Wed 4/3

9:30 a.m.-10:15 a.m.

1 stop19h 45m

Lisbon Humberto Delgado

Tue 10/3

6:10 a.m.-7:35 p.m.

1 stop17h 25m

C$ 684

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Mon 2/3

2:20 p.m.-8:10 a.m.

2 stops12h 50m

Lisbon Humberto Delgado

Tue 10/3

6:10 a.m.-7:35 p.m.

1 stop17h 25m

C$ 690

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sun 1/3

9:30 a.m.-10:15 a.m.

1 stop19h 45m

Lisbon Humberto Delgado

Thu 12/3

11:55 a.m.-11:57 p.m.

1 stop16h 02m

C$ 690

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Mon 13/4

7:05 p.m.-2:55 p.m.

1 stop14h 50m

Lisbon Humberto Delgado

Tue 21/4

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

Nonstop7h 36m

C$ 696

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Thu 26/2

8:59 p.m.-5:30 p.m.

2 stops15h 31m

Lisbon Humberto Delgado

Wed 11/3

11:15 a.m.-2:55 p.m.

Nonstop7h 40m

C$ 702

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Thu 26/2

8:59 p.m.-5:30 p.m.

2 stops15h 31m

Lisbon Humberto Delgado

Sat 7/3

11:25 a.m.-1:20 p.m.

1 stop30h 55m

C$ 720

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sun 12/4

11:25 p.m.-10:45 a.m.

Nonstop6h 20m

Lisbon Humberto Delgado

Mon 20/4

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

Nonstop7h 36m

C$ 737

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sat 11/4

11:25 p.m.-10:45 a.m.

Nonstop6h 20m

Lisbon Humberto Delgado

Wed 22/4

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

Nonstop7h 36m

C$ 737

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/1

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 23 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$ 481). Flying from Boston to Lisbon in June is currently the most expensive (average of C$ 816). 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 29 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.

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 29 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
2,130 reviews
Check prices

Boarding

7.0

Entertainment

6.3

Crew

7.8

Overall

7.1

Comfort

7.1

Food

6.2

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
2,130 reviews
TAP AIR PORTUGAL
7.1
Good
2,130 reviews
Check prices

Boarding

7.0

Entertainment

6.3

Crew

7.8

Overall

7.1

Comfort

7.1

Food

6.2

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 17 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$ 684, United Airlines 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$ 733, 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: JetBlue (82%), TAP AIR PORTUGAL (82%), Emirates (82%).

  • What are the cheapest flights from Boston to Lisbon?

    While on average a flight from Boston to Lisbon is generally C$ 665, our data shows the cheapest flight currently is C$ 516. When looking at the most popular route, (Boston Logan Intl - Lisbon Humberto Delgado), you can expect to pay C$ 687 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$ 481). Flying from Boston to Lisbon in June is currently the most expensive (average of C$ 816). 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 29 January 2026.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapestC$ 733AverageC$ 1,077FlexibilityNo 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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