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Cheap flights from Boston to Lisbon from C$ 493

BOS — LIS
9 Dec — 16 Dec1
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
Tue 8/121:55 p.m. -
1 stop32h 55m
Deal found 5/11C$ 877
Mon 30/117:50 p.m. -
1 stop11h 55m
Tue 8/121:55 p.m. -
1 stop32h 55m
Deal found 4/11C$ 881
Wed 2/127:50 p.m. -
1 stop12h 00m
Sun 6/122:00 p.m. -
1 stop32h 50m
Deal found 5/11C$ 948
Mon 16/116:00 p.m. -
Nonstop6h 35m
Tue 24/1112:30 p.m. -
1 stop13h 00m
Deal found 4/11C$ 1,002
Wed 9/127:50 p.m. -
1 stop12h 00m
Thu 17/122:00 p.m. -
1 stop32h 50m
Deal found 7/11C$ 1,014
Thu 10/1210:20 p.m. -
Nonstop6h 35m
Wed 16/1211:40 a.m. -
Nonstop8h 00m
Deal found 5/11C$ 1,016
Tue 24/1110:45 p.m. -
1 stop13h 30m
Mon 7/1211:30 p.m. -
1 stop26h 00m
Deal found 7/11C$ 1,018
Tue 17/1110:45 p.m. -
1 stop13h 30m
Mon 23/1111:30 p.m. -
1 stop26h 00m
Deal found 4/11C$ 1,023
Thu 12/1110:20 p.m. -
Nonstop6h 35m
Tue 24/112:00 p.m. -
1 stop11h 30m
Deal found 7/11C$ 1,026
Thu 12/1110:20 p.m. -
Nonstop6h 35m
Mon 23/119:00 p.m. -
1 stop28h 30m
Deal found 8/11C$ 1,028

Find flight deals from Boston to Lisbon

Round-trip from

C$ 877

One-way from

C$ 493

Popular in

June

Cheapest in

February

Average price

C$ 1,075

Good round-trip deal

C$ 1,029 or less
Icelandair
  • Icelandair
  • 2/12-8/12
  • 2 total stops
  • 44h 55m total
  • Boston to Lisbon
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Azores Airlines
  • Azores Airlines
  • 9/12-31/12
  • 1 total stop
  • 20h 50m total
  • Boston to Lisbon
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (C$ 351 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 40 potential savings vs. average RT price).
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Average for round-trip flights in November 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

10:45 p.m.-1:55 p.m.

1 stop10h 10m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 494

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Sun 3/1

10:50 p.m.-9:00 p.m.

1 stop17h 10m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 496

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Sun 7/2

6:00 p.m.-5:35 a.m.

Nonstop6h 35m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 524

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Tue 17/11

6:00 p.m.-5:35 a.m.

Nonstop6h 35m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 533

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$ 684
Quickest round-trip

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Wed 10/3

9:15 p.m.-8:35 a.m.

Nonstop6h 20m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 684

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Sun 3/1

9:30 p.m.-8:55 a.m.

Nonstop6h 25m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 684

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Mon 1/3

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$ 684

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Sat 26/12

3:31 p.m.-9:20 a.m.

2 stops36h 49m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 718

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Wed 7/4

10:30 p.m.-11:35 p.m.

1 stop20h 05m

Lisbon Humberto Delgado

Wed 14/4

9:00 a.m.-2:55 p.m.

1 stop10h 55m

C$ 1,026

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/11

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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$ 985). Flying from Boston to Lisbon in June is currently the most expensive (average of C$ 1,541). 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$ 918 and C$ 1,271 in December.
The cheapest round-trip price found within the last 5 days was C$ 877 on Icelandair (2 Dec-8 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$ 1,052, 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 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: airBaltic (97%), Emirates (97%), JetBlue (94%).

  • What are the cheapest flights from Boston to Lisbon?

    While on average a flight from Boston to Lisbon is generally C$ 1,061, 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$ 1,055 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$ 985). Flying from Boston to Lisbon in June is currently the most expensive (average of C$ 1,541). 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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