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Cheap flights from Boston to Lisbon from C$ 447

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 2/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LIS
18 May — 25 May1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Boston Logan Intl to Lisbon Humberto Delgado are usually found in February or November, booked 85 days in advance, depart on a Saturday 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 18 April 2026.

Sat 26/911:00 p.m.
BOS
-
LIS
1 stop28h 30m
LEVEL
Sat 3/105:50 p.m.
LIS
-
BOS
1 stop33h 15m
LEVEL
Deal found 14/4C$ 887
Mon 10/811:00 p.m.
BOS
-
LIS
1 stop16h 35m
LEVEL
Mon 24/810:10 p.m.
LIS
-
BOS
1 stop28h 05m
LEVEL
Deal found 15/4C$ 903
Mon 4/510:50 p.m.
BOS
-
LIS
1 stop28h 40m
LEVEL
Thu 14/55:45 p.m.
LIS
-
BOS
1 stop32h 20m
LEVEL
Deal found 17/4C$ 904
Tue 8/95:40 p.m.
BOS
-
LIS
1 stop16h 55m
Scandinavian Airlines
Wed 30/97:15 a.m.
LIS
-
BOS
2 stops20h 21m
Scandinavian Airlines
Deal found 14/4C$ 910
Sun 16/811:50 p.m.
BOS
-
LIS
1 stop16h 40m
LEVEL
Sun 23/810:10 p.m.
LIS
-
BOS
1 stop28h 05m
LEVEL
Deal found 15/4C$ 922
Mon 17/811:00 p.m.
BOS
-
LIS
1 stop14h 25m
LEVEL
Sun 23/810:10 p.m.
LIS
-
BOS
1 stop28h 05m
LEVEL
Deal found 14/4C$ 925
Wed 14/109:50 p.m.
BOS
-
LIS
1 stop36h 55m
Turkish Airlines
Mon 19/104:45 p.m.
LIS
-
BOS
1 stop32h 10m
Turkish Airlines
Deal found 13/4C$ 929
Wed 4/119:00 p.m.
BOS
-
LIS
1 stop21h 25m
Turkish Airlines
Mon 23/114:05 p.m.
LIS
-
BOS
1 stop31h 00m
Turkish Airlines
Deal found 17/4C$ 930
Wed 2/911:00 p.m.
BOS
-
LIS
1 stop17h 30m
LEVEL
Wed 9/99:15 p.m.
LIS
-
BOS
1 stop29h 00m
LEVEL
Deal found 16/4C$ 936
Tue 29/99:50 p.m.
BOS
-
LIS
1 stop20h 30m
Turkish Airlines
Wed 7/105:55 a.m.
LIS
-
BOS
1 stop19h 00m
Turkish Airlines
Deal found 17/4C$ 941
Tue 15/99:50 p.m.
BOS
-
LIS
1 stop36h 45m
Turkish Airlines
Wed 30/94:45 p.m.
LIS
-
BOS
1 stop32h 10m
Turkish Airlines
Deal found 16/4C$ 944
Sat 6/610:50 p.m.
BOS
-
LIS
1 stop28h 40m
LEVEL
Wed 17/67:05 p.m.
LIS
-
BOS
1 stop31h 00m
LEVEL
Deal found 14/4C$ 945

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 18 April 2026.

Round-trip from

C$ 887

One-way from

C$ 447

Popular in

June

Cheapest in

February

Average price

C$ 1,178

Good round-trip deal

C$ 1,087 or less
LEVEL
  • LEVEL
  • 26/9-3/10
  • 2 total stops
  • 61h 45m total
  • Boston to Lisbon
Search Deals
LEVEL
  • LEVEL
  • 2/5
  • 1 total stop
  • 28h 40m total
  • Boston to Lisbon
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (C$ 263 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 44 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 18 April 2026.
Use the filters below to find and compare flights from Boston to Lisbon that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Wed 10/6

10:05 a.m.-9:35 a.m.

1 stop18h 30m

Lisbon Humberto Delgado

Fri 10/7

11:35 a.m.-9:05 a.m.

1 stop26h 30m

C$ 1,174

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Wed 27/5

10:05 a.m.-9:35 a.m.

1 stop18h 30m

Lisbon Humberto Delgado

Mon 8/6

11:35 a.m.-9:05 a.m.

1 stop26h 30m

C$ 1,179

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Wed 9/9

5:40 p.m.-4:00 p.m.

2 stops17h 20m

Lisbon Humberto Delgado

Mon 14/9

7:15 a.m.-3:35 p.m.

1 stop13h 20m

C$ 1,315

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sat 18/7

7:10 p.m.-11:15 a.m.

1 stop11h 05m

Lisbon Humberto Delgado

Sun 2/8

9:55 a.m.-11:08 p.m.

1 stop18h 13m

C$ 1,446

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Mon 20/7

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

Nonstop6h 20m

Lisbon Humberto Delgado

Fri 31/7

5:35 a.m.-1:39 p.m.

1 stop13h 04m

C$ 1,605

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sun 24/5

1:29 p.m.-4:00 p.m.

2 stops21h 31m

Lisbon Humberto Delgado

Mon 15/6

7:00 a.m.-11:06 p.m.

2 stops21h 06m

C$ 1,616

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Thu 14/5

8:50 p.m.-9:55 p.m.

2 stops20h 05m

Lisbon Humberto Delgado

Wed 20/5

8:20 a.m.-6:50 p.m.

2 stops15h 30m

C$ 1,628

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Mon 20/7

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

Nonstop6h 20m

Lisbon Humberto Delgado

Fri 31/7

5:35 a.m.-1:39 p.m.

1 stop13h 04m

C$ 1,639

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Mon 1/6

5:40 p.m.-4:00 p.m.

2 stops17h 20m

Lisbon Humberto Delgado

Thu 4/6

7:00 a.m.-11:02 p.m.

2 stops21h 02m

C$ 1,770
Quickest round-trip

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Fri 31/7

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

Nonstop6h 20m

Lisbon Humberto Delgado

Fri 7/8

12:45 p.m.-3:15 p.m.

Nonstop7h 30m

C$ 1,788

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/4

Showing 1-10 of 22 resultsSorted by cheapest first
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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 10 April 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, February is the cheapest month in which you can book a flight from Boston to Lisbon (average of C$ 837). Flying from Boston to Lisbon in June is currently the most expensive (average of C$ 1,409). 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 18 April 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?

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.

  • How popular is this Boston to Lisbon flight route?

    The Boston Logan Intl to Lisbon Humberto Delgado flight path was viewed by 11 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$ 1,190, Scandinavian Airlines can have you in Lisbon from Boston in 18h 25m. The distance from Boston to Lisbon is about 5121 km. This flight may include one or multiple stops.

  • 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 (93%), Emirates (92%), airBaltic (80%).

  • What are the cheapest flights from Boston to Lisbon?

    While on average a flight from Boston to Lisbon is generally C$ 1,195, our data shows the cheapest flight currently is C$ 987. When looking at the most popular route, (Boston Logan Intl - Lisbon Humberto Delgado), you can expect to pay C$ 880 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, February is the cheapest month in which you can book a flight from Boston to Lisbon (average of C$ 837). Flying from Boston to Lisbon in June is currently the most expensive (average of C$ 1,409). 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
Sintra
Fátima
Óbidos
Costa da Caparica
Setúbal

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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.

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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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