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Cheap flights from Boston to Lisbon from C$ 478

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 31/3. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LIS
16 Apr — 23 Apr1
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 Thursday or Wednesday 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 17 March 2026.

Mon 27/410:50 p.m.
BOS
-
LIS
1 stop16h 45m
LEVEL
Fri 15/510:10 p.m.
LIS
-
BOS
1 stop27h 55m
LEVEL
Deal found 12/3C$ 730
Thu 12/115:35 p.m.
BOS
-
LIS
1 stop17h 30m
Scandinavian Airlines
Thu 19/114:55 p.m.
LIS
-
BOS
1 stop27h 45m
Scandinavian Airlines
Deal found 12/3C$ 734
Tue 15/95:40 p.m.
BOS
-
LIS
1 stop16h 55m
Multiple Airlines
Wed 30/97:15 a.m.
LIS
-
BOS
1 stop13h 20m
Multiple Airlines
Deal found 15/3C$ 738
Fri 21/89:55 a.m.
BOS
-
LIS
2 stops25h 15m
Scandinavian Airlines
Wed 2/94:25 p.m.
LIS
-
BOS
1 stop28h 10m
Scandinavian Airlines
Deal found 15/3C$ 745
Tue 15/95:40 p.m.
BOS
-
LIS
1 stop16h 55m
Scandinavian Airlines
Wed 30/97:15 a.m.
LIS
-
BOS
2 stops20h 21m
Scandinavian Airlines
Deal found 15/3C$ 746
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 12/3C$ 759
Mon 2/115:35 p.m.
BOS
-
LIS
1 stop17h 30m
Scandinavian Airlines
Sat 7/117:00 a.m.
LIS
-
BOS
1 stop13h 40m
Scandinavian Airlines
Deal found 12/3C$ 761
Sat 22/85:40 p.m.
BOS
-
LIS
2 stops41h 20m
Scandinavian Airlines
Wed 2/94:25 p.m.
LIS
-
BOS
1 stop28h 10m
Scandinavian Airlines
Deal found 15/3C$ 767
Sat 25/45:40 p.m.
BOS
-
LIS
1 stop34h 20m
Scandinavian Airlines
Mon 4/54:25 p.m.
LIS
-
BOS
1 stop28h 10m
Scandinavian Airlines
Deal found 15/3C$ 769
Mon 2/115:35 p.m.
BOS
-
LIS
1 stop17h 30m
Scandinavian Airlines
Mon 9/118:05 a.m.
LIS
-
BOS
2 stops36h 35m
Scandinavian Airlines
Deal found 12/3C$ 772
Mon 13/45:40 p.m.
BOS
-
LIS
1 stop17h 10m
Scandinavian Airlines
Wed 6/54:25 p.m.
LIS
-
BOS
1 stop28h 10m
Scandinavian Airlines
Deal found 15/3C$ 775
Mon 13/45:40 p.m.
BOS
-
LIS
1 stop17h 10m
Multiple Airlines
Sun 19/47:00 a.m.
LIS
-
BOS
2 stops21h 07m
Multiple Airlines
Deal found 16/3C$ 776

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 17 March 2026.

Round-trip from

C$ 730

One-way from

C$ 478

Popular in

June

Cheapest in

February

Average price

C$ 942
LEVEL
  • LEVEL
  • 27/4-15/5
  • 2 total stops
  • 44h 40m total
  • Boston to Lisbon
Search Deals
Azores Airlines
  • Azores Airlines
  • 31/3
  • 1 total stop
  • 9h 25m total
  • Boston to Lisbon
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 220 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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 17 March 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

Sat 25/4

5:40 p.m.-10:05 p.m.

2 stops23h 25m

Lisbon Humberto Delgado

Mon 4/5

4:25 p.m.-3:35 p.m.

1 stop28h 10m

C$ 895

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Mon 4/5

10:50 p.m.-8:35 p.m.

1 stop16h 45m

Lisbon Humberto Delgado

Sat 16/5

2:00 p.m.-9:05 p.m.

1 stop12h 05m

C$ 997

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Mon 4/5

5:40 p.m.-3:50 p.m.

1 stop17h 10m

Lisbon Humberto Delgado

Sat 16/5

7:00 a.m.-11:01 p.m.

2 stops21h 01m

C$ 1,016

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Thu 7/5

5:40 p.m.-8:25 p.m.

1 stop21h 45m

Lisbon Humberto Delgado

Fri 15/5

9:15 p.m.-3:35 p.m.

1 stop23h 20m

C$ 1,039

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sun 26/4

5:25 p.m.-8:20 a.m.

1 stop9h 55m

Lisbon Humberto Delgado

Mon 4/5

1:00 p.m.-10:39 p.m.

1 stop14h 39m

C$ 1,052

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sat 11/4

7:30 p.m.-9:20 a.m.

2 stops32h 50m

Lisbon Humberto Delgado

Sun 26/4

11:25 a.m.-9:49 a.m.

1 stop27h 24m

C$ 1,073

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sun 12/4

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

1 stop21h 40m

Lisbon Humberto Delgado

Sun 26/4

11:25 a.m.-9:49 a.m.

1 stop27h 24m

C$ 1,080

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Thu 2/4

9:50 p.m.-3:25 p.m.

1 stop36h 35m

Lisbon Humberto Delgado

Tue 7/4

5:55 a.m.-7:55 p.m.

1 stop19h 00m

C$ 1,182

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sun 19/4

5:30 a.m.-9:20 a.m.

1 stop22h 50m

Lisbon Humberto Delgado

Sun 26/4

11:25 a.m.-9:49 a.m.

1 stop27h 24m

C$ 1,190
Quickest round-trip

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Tue 14/4

9:45 p.m.-2:55 p.m.

1 stop12h 10m

Lisbon Humberto Delgado

Tue 28/4

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

Nonstop7h 36m

C$ 1,275

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

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 13 March 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$ 426). Flying from Boston to Lisbon in June is currently the most expensive (average of C$ 815). 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 17 March 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.

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$ 997, Scandinavian Airlines can have you in Lisbon from Boston in 16h 45m. 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 (85%), Emirates (83%), KLM (71%).

  • 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$ 426). Flying from Boston to Lisbon in June is currently the most expensive (average of C$ 815). 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
Óbidos
Sintra
Costa da Caparica
Setúbal

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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.

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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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