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Cheap flights from Boston to Lisbon from C$ 467

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 24/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LIS
13 Sep — 20 Sep1
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 15 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 14 August 2026.

Thu 1/1010:55 p.m. -
1 stop17h 35m
Thu 8/102:00 p.m. -
1 stop12h 05m
Deal found 14/8C$ 891
Sat 14/116:00 p.m. -
Nonstop6h 35m
Sat 21/115:00 p.m. -
Nonstop7h 55m
Deal found 12/8C$ 894
Mon 30/117:50 p.m. -
1 stop12h 00m
Tue 22/1211:40 a.m. -
1 stop11h 10m
Deal found 11/8C$ 895
Mon 9/117:50 p.m. -
1 stop12h 00m
Thu 19/112:00 p.m. -
1 stop32h 50m
Deal found 10/8C$ 898
Thu 24/910:55 p.m. -
1 stop16h 40m
Tue 29/97:10 p.m. -
1 stop30h 55m
Deal found 10/8C$ 899
Sat 14/119:20 p.m. -
1 stop15h 55m
Sat 21/1110:50 a.m. -
1 stop13h 05m
Deal found 12/8C$ 906
Thu 24/910:55 p.m. -
1 stop16h 40m
Wed 30/97:10 p.m. -
1 stop30h 55m
Deal found 12/8C$ 908
Tue 10/116:35 p.m. -
1 stop31h 20m
Tue 17/1112:50 p.m. -
2 stops28h 36m
Deal found 10/8C$ 916
Tue 27/106:05 p.m. -
1 stop10h 05m
Tue 17/1112:50 p.m. -
2 stops28h 56m
Deal found 12/8C$ 917
Tue 10/118:05 p.m. -
1 stop31h 05m
Thu 26/118:55 a.m. -
1 stop30h 03m
Deal found 11/8C$ 919
Fri 27/117:15 a.m. -
2 stops21h 05m
Tue 8/1212:50 p.m. -
2 stops28h 53m
Deal found 10/8C$ 923

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 14 August 2026.

Round-trip from

C$ 891

One-way from

C$ 467

Popular in

June

Cheapest in

February

Average price

C$ 1,235
LEVEL
  • LEVEL
  • 1/10-8/10
  • 2 total stops
  • 29h 40m total
  • Boston to Lisbon
Search Deals
LEVEL
  • LEVEL
  • 24/9
  • 1 total stop
  • 16h 40m total
  • Boston to Lisbon
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (C$ 398 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 46 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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 14 August 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 Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Wed 25/11

7:05 p.m.-8:10 a.m.

1 stop32h 05m

Lisbon Humberto Delgado

Sun 6/12

10:40 a.m.-9:58 a.m.

1 stop28h 18m

C$ 919

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Sat 14/11

5:30 a.m.-10:20 a.m.

1 stop23h 50m

Lisbon Humberto Delgado

Sat 21/11

11:20 a.m.-5:42 p.m.

2 stops35h 22m

C$ 926

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Wed 25/11

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

Nonstop6h 20m

Lisbon Humberto Delgado

Sun 6/12

10:00 a.m.-10:55 p.m.

1 stop17h 55m

C$ 933

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Thu 12/11

11:08 a.m.-9:05 a.m.

1 stop16h 57m

Lisbon Humberto Delgado

Mon 16/11

6:30 a.m.-4:57 p.m.

2 stops15h 27m

C$ 945

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Wed 18/11

6:00 a.m.-8:10 a.m.

1 stop21h 10m

Lisbon Humberto Delgado

Sun 29/11

10:40 a.m.-2:53 p.m.

1 stop33h 13m

C$ 960

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Mon 28/12

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

Nonstop6h 25m

Lisbon Humberto Delgado

Mon 4/1

11:15 a.m.-1:55 p.m.

Nonstop7h 40m

C$ 967

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Mon 25/1

9:55 a.m.-8:00 a.m.

1 stop17h 05m

Lisbon Humberto Delgado

Thu 25/2

11:15 a.m.-2:10 p.m.

Nonstop7h 55m

C$ 973
Quickest round-trip

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Mon 7/9

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

Nonstop6h 20m

Lisbon Humberto Delgado

Mon 14/9

12:45 p.m.-3:20 p.m.

Nonstop7h 35m

C$ 1,009

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Thu 10/9

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

Nonstop6h 20m

Lisbon Humberto Delgado

Fri 18/9

12:45 p.m.-3:20 p.m.

Nonstop7h 35m

C$ 1,009

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Thu 10/9

5:10 p.m.-11:15 a.m.

1 stop13h 05m

Lisbon Humberto Delgado

Mon 14/9

12:45 p.m.-3:20 p.m.

Nonstop7h 35m

C$ 1,036

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/8

Showing 1-10 of 21 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?

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$ 895). Flying from Boston to Lisbon in June is currently the most expensive (average of C$ 1,522). 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 14 August 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?

Airfare is below average for this route at the moment.

Boston to Lisbon flights typically cost between C$ 1,069 and C$ 1,479 in October.
The cheapest round-trip price found within the last 5 days was C$ 891 on LEVEL (1 Oct-8 Oct).

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 4 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$ 933, 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: Emirates (78%), JetBlue (78%), TAP AIR PORTUGAL (78%).

  • 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$ 895). Flying from Boston to Lisbon in June is currently the most expensive (average of C$ 1,522). 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
Sintra
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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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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