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Cheap flights from Boston to Lisbon from C$ 539

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 23/7. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LIS
26 Jun — 3 Jul1
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 Friday or Thursday 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 27 May 2026.

Fri 4/95:40 p.m.
BOS
-
LIS
2 stops17h 20m
Multiple Airlines
Sat 12/910:55 p.m.
LIS
-
BOS
1 stop21h 40m
Multiple Airlines
Deal found 25/5C$ 1,167
Fri 21/89:05 a.m.
BOS
-
LIS
2 stops26h 10m
Scandinavian Airlines
Wed 26/812:05 a.m.
LIS
-
BOS
1 stop20h 30m
Scandinavian Airlines
Deal found 25/5C$ 1,168
Sat 19/98:50 p.m.
BOS
-
LIS
1 stop12h 00m
Icelandair
Thu 1/103:00 p.m.
LIS
-
BOS
1 stop32h 50m
Icelandair
Deal found 26/5C$ 1,171
Wed 19/81:34 p.m.
BOS
-
LIS
2 stops21h 26m
Multiple Airlines
Wed 26/87:15 a.m.
LIS
-
BOS
1 stop13h 20m
Multiple Airlines
Deal found 25/5C$ 1,176
Sat 25/710:05 a.m.
BOS
-
LIS
1 stop18h 30m
Air Transat
Sat 1/88:15 a.m.
LIS
-
BOS
1 stop17h 40m
Air Transat
Deal found 26/5C$ 1,179
Wed 16/93:35 p.m.
BOS
-
LIS
1 stop12h 45m
United Airlines
Tue 22/911:25 a.m.
LIS
-
BOS
2 stops32h 25m
United Airlines
Deal found 26/5C$ 1,181
Mon 17/86:00 a.m.
BOS
-
LIS
1 stop21h 20m
United Airlines
Fri 28/811:25 a.m.
LIS
-
BOS
1 stop27h 25m
United Airlines
Deal found 27/5C$ 1,182
Mon 7/96:00 a.m.
BOS
-
LIS
1 stop21h 20m
United Airlines
Sat 26/911:25 a.m.
LIS
-
BOS
1 stop27h 25m
United Airlines
Deal found 26/5C$ 1,183
Fri 7/86:05 a.m.
BOS
-
LIS
2 stops22h 15m
United Airlines
Wed 19/811:25 a.m.
LIS
-
BOS
2 stops27h 23m
United Airlines
Deal found 24/5C$ 1,185
Fri 7/88:10 p.m.
BOS
-
LIS
1 stop32h 25m
Air Transat
Thu 13/811:35 a.m.
LIS
-
BOS
1 stop12h 40m
Air Transat
Deal found 26/5C$ 1,186
Thu 6/811:20 p.m.
BOS
-
LIS
Nonstop6h 25m
Delta
Mon 31/812:45 p.m.
LIS
-
BOS
Nonstop7h 30m
Delta
Deal found 26/5C$ 1,188
Fri 4/911:25 p.m.
BOS
-
LIS
Nonstop6h 20m
Delta
Sat 12/912:45 p.m.
LIS
-
BOS
Nonstop7h 35m
Delta
Deal found 25/5C$ 1,189

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 27 May 2026.

Round-trip from

C$ 1,167

One-way from

C$ 539

Popular in

June

Cheapest in

February

Average price

C$ 1,297
Scandinavian Airlines
  • Scandinavian Airlines
  • 4/9-12/9
  • 3 total stops
  • 39h 00m total
  • Boston to Lisbon
Search Deals
LEVEL
  • LEVEL
  • 23/7
  • 1 total stop
  • 27h 55m total
  • Boston to Lisbon
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (C$ 350 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 46 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 27 May 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 16/9

3:35 p.m.-9:20 a.m.

1 stop12h 45m

Lisbon Humberto Delgado

Tue 22/9

11:25 a.m.-2:50 p.m.

2 stops32h 25m

C$ 1,181

BostonLisbon

BOS - LIS

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$ 1,188

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Mon 17/8

11:20 p.m.-10:45 a.m.

Nonstop6h 25m

Lisbon Humberto Delgado

Fri 28/8

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

Nonstop7h 30m

C$ 1,188

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Wed 26/8

11:20 p.m.-10:45 a.m.

Nonstop6h 25m

Lisbon Humberto Delgado

Wed 9/9

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

Nonstop7h 35m

C$ 1,189
Quickest round-trip

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Tue 21/7

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

Nonstop6h 20m

Lisbon Humberto Delgado

Thu 6/8

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

Nonstop7h 30m

C$ 1,190

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Wed 28/10

5:00 p.m.-8:00 a.m.

1 stop11h 00m

Lisbon Humberto Delgado

Wed 4/11

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

Nonstop7h 44m

C$ 1,194

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sat 18/7

9:05 a.m.-8:00 a.m.

1 stop17h 55m

Lisbon Humberto Delgado

Wed 5/8

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

Nonstop7h 30m

C$ 1,196

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Thu 13/8

11:20 p.m.-10:45 a.m.

Nonstop6h 25m

Lisbon Humberto Delgado

Thu 20/8

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

Nonstop7h 30m

C$ 1,196

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Fri 10/7

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

1 stop12h 10m

Lisbon Humberto Delgado

Fri 17/7

12:45 p.m.-3:10 p.m.

Nonstop7h 25m

C$ 1,216

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Mon 26/10

6:35 p.m.-5:55 p.m.

2 stops19h 20m

Lisbon Humberto Delgado

Fri 30/10

7:05 a.m.-10:26 p.m.

2 stops19h 21m

C$ 1,218

Flights are sorted by cheapest round-trip flights first.

Deals found on 26/5

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?

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 84 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$ 845). Flying from Boston to Lisbon in June is currently the most expensive (average of C$ 1,465). 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 27 May 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 6 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$ 1,189, 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: JetBlue (88%), TAP AIR PORTUGAL (88%), Emirates (85%).

  • 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$ 845). Flying from Boston to Lisbon in June is currently the most expensive (average of C$ 1,465). 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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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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