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Cheap flights from Boston to Lisbon from C$ 544

BOS — LIS
18 Nov — 25 Nov1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Boston to Lisbon

Enter your travel dates to find the best prices.

Cheapest flights from Boston to Lisbon

Wed 2/127:50 p.m. -
1 stop12h 00m
Sun 13/122:00 p.m. -
1 stop32h 50m
Deal found 18/10C$ 968
Sun 13/129:30 a.m. -
1 stop19h 35m
Thu 24/128:55 a.m. -
2 stops34h 30m
Deal found 19/10C$ 1,023
Mon 7/127:01 p.m. -
1 stop32h 09m
Fri 18/1211:20 a.m. -
1 stop32h 33m
Deal found 15/10C$ 1,025
Fri 11/126:35 p.m. -
1 stop9h 45m
Fri 18/1211:20 a.m. -
2 stops36h 07m
Deal found 18/10C$ 1,028
Tue 8/129:35 p.m. -
Nonstop6h 25m
Tue 15/1211:15 a.m. -
Nonstop7h 44m
Deal found 15/10C$ 1,032
Wed 2/125:30 a.m. -
1 stop20h 25m
Tue 8/1212:50 p.m. -
2 stops35h 22m
Deal found 18/10C$ 1,033
Sun 29/1112:10 p.m. -
1 stop15h 00m
Sun 6/1210:40 a.m. -
2 stops30h 47m
Deal found 15/10C$ 1,035
Tue 1/127:01 p.m. -
1 stop32h 09m
Fri 11/1211:20 a.m. -
1 stop27h 28m
Deal found 18/10C$ 1,036
Mon 7/129:35 p.m. -
Nonstop6h 25m
Mon 14/1211:15 a.m. -
Nonstop7h 44m
Deal found 15/10C$ 1,037
Sun 22/117:41 p.m. -
2 stops33h 59m
Sun 6/1210:40 a.m. -
2 stops30h 47m
Deal found 18/10C$ 1,039
Sat 12/126:35 p.m. -
1 stop9h 05m
Sat 19/1211:20 a.m. -
2 stops31h 06m
Deal found 15/10C$ 1,040

Find flight deals from Boston to Lisbon

Round-trip from

C$ 968

One-way from

C$ 544

Popular in

June

Cheapest in

February

Average price

C$ 1,158

Good round-trip deal

C$ 959 or less
Icelandair
  • Icelandair
  • 2/12-13/12
  • 2 total stops
  • 44h 50m total
  • Boston to Lisbon
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TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 7/11-31/12
  • Nonstop
  • 6h 35m total
  • Boston to Lisbon
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (C$ 358 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 43 potential savings vs. average RT price).
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Average for round-trip flights in October 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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Cheapflights Fare Finder

 
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 Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Tue 29/12

9:35 p.m.-9:00 a.m.

Nonstop6h 25m

Lisbon Humberto Delgado

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 677

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Tue 9/2

12:26 p.m.-9:20 a.m.

3 stops15h 54m

Lisbon Humberto Delgado

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 694

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Thu 24/12

7:15 a.m.-8:10 a.m.

1 stop19h 55m

Lisbon Humberto Delgado

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 753

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Wed 23/12

7:49 p.m.-8:10 a.m.

2 stops31h 21m

Lisbon Humberto Delgado

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 780

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Wed 18/11

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

Nonstop6h 20m

Lisbon Humberto Delgado

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 804

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Mon 30/11

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

Nonstop6h 20m

Lisbon Humberto Delgado

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 804

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Wed 11/11

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

Nonstop6h 20m

Lisbon Humberto Delgado

Mon 16/11

11:15 a.m.-1:59 p.m.

Nonstop7h 44m

C$ 1,042

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Mon 9/11

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

Nonstop6h 20m

Lisbon Humberto Delgado

Wed 18/11

11:15 a.m.-1:59 p.m.

Nonstop7h 44m

C$ 1,043

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Tue 17/11

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

Nonstop6h 20m

Lisbon Humberto Delgado

Mon 23/11

11:15 a.m.-1:59 p.m.

Nonstop7h 44m

C$ 1,043

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Wed 9/12

7:01 p.m.-8:10 a.m.

1 stop32h 09m

Lisbon Humberto Delgado

Sun 13/12

10:50 a.m.-5:42 p.m.

2 stops35h 52m

C$ 1,043

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/10

Showing 1-10 of 20 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

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?

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 14 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$ 968). Flying from Boston to Lisbon in June is currently the most expensive (average of C$ 1,546). 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?

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?

Airfare is below average for this route at the moment.

Boston to Lisbon flights typically cost between C$ 1,032 and C$ 1,339 in December.
The cheapest round-trip price found within the last 5 days was C$ 968 on Icelandair (2 Dec-13 Dec).

Related info for your journey

  • How popular is this Boston to Lisbon flight route?

    The Boston Logan Intl to Lisbon Humberto Delgado flight path was viewed by 5 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$ 1,042, Virgin Atlantic 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 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 (92%), Emirates (92%), TAP AIR PORTUGAL (92%).

  • What are the cheapest flights from Boston to Lisbon?

    While on average a flight from Boston to Lisbon is generally C$ 1,366, our data shows the cheapest flight currently is C$ 954. When looking at the most popular route, (Boston Logan Intl - Lisbon Humberto Delgado), you can expect to pay C$ 1,056 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$ 968). Flying from Boston to Lisbon in June is currently the most expensive (average of C$ 1,546). 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
Estoril
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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