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Cheap flights from Boston to Lisbon from C$ 454

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 16/8. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LIS
8 Sep — 15 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 9 August 2026.

Wed 23/910:55 p.m. -
1 stop16h 40m
Wed 14/109:10 a.m. -
1 stop16h 55m
Deal found 9/8C$ 914
Wed 2/123:30 p.m. -
1 stop10h 25m
Tue 8/1212:50 p.m. -
2 stops34h 59m
Deal found 7/8C$ 916
Thu 12/117:41 p.m. -
1 stop9h 39m
Tue 17/1112:50 p.m. -
2 stops29h 41m
Deal found 6/8C$ 917
Tue 17/116:00 a.m. -
1 stop21h 10m
Sun 22/1110:40 a.m. -
1 stop28h 18m
Deal found 7/8C$ 918
Tue 17/119:40 p.m. -
Nonstop6h 20m
Thu 26/1111:15 a.m. -
Nonstop7h 44m
Deal found 6/8C$ 925
Sun 23/811:35 p.m. -
1 stop16h 55m
Tue 22/99:15 p.m. -
1 stop28h 50m
Deal found 7/8C$ 927
Wed 16/910:55 p.m. -
1 stop14h 30m
Wed 23/99:15 p.m. -
1 stop28h 50m
Deal found 5/8C$ 928
Tue 17/115:00 p.m. -
1 stop10h 00m
Sun 22/1111:15 a.m. -
Nonstop7h 44m
Deal found 7/8C$ 931
Mon 16/112:40 p.m. -
2 stops36h 30m
Tue 24/1112:50 p.m. -
1 stop26h 08m
Deal found 4/8C$ 932
Thu 15/106:50 p.m. -
1 stop9h 30m
Tue 17/1112:50 p.m. -
1 stop11h 12m
Deal found 5/8C$ 934

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 9 August 2026.

Round-trip from

C$ 916

One-way from

C$ 454

Popular in

June

Cheapest in

February

Average price

C$ 1,235

Good one-way deal

C$ 648 or less
United Airlines
  • United Airlines
  • 2/12-8/12
  • 3 total stops
  • 45h 24m total
  • Boston to Lisbon
Search Deals
LEVEL
  • LEVEL
  • 16/8
  • 1 total stop
  • 27h 55m total
  • Boston to Lisbon
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (C$ 397 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
Price to beat on a one-way flight from Boston Logan Intl to Lisbon Humberto Delgado.
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 9 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

Sun 13/12

9:50 a.m.-10:05 a.m.

1 stop19h 15m

Lisbon Humberto Delgado

Tue 22/12

12:50 p.m.-4:00 p.m.

2 stops32h 10m

C$ 917

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Thu 26/11

7:00 a.m.-8:00 a.m.

1 stop20h 00m

Lisbon Humberto Delgado

Wed 9/12

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

Nonstop7h 44m

C$ 931

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Sat 17/10

6:55 p.m.-11:05 a.m.

1 stop11h 10m

Lisbon Humberto Delgado

Tue 27/10

12:50 p.m.-1:31 p.m.

2 stops28h 41m

C$ 964

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Sun 13/12

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

Nonstop6h 25m

Lisbon Humberto Delgado

Tue 22/12

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

Nonstop7h 44m

C$ 967

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Thu 20/8

12:00 p.m.-11:15 a.m.

2 stops18h 15m

Lisbon Humberto Delgado

Fri 28/8

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

Nonstop7h 30m

C$ 999

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Thu 20/8

11:00 a.m.-8:20 a.m.

1 stop16h 20m

Lisbon Humberto Delgado

Thu 27/8

11:25 a.m.-12:47 p.m.

2 stops30h 22m

C$ 1,001

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Fri 21/8

5:45 a.m.-10:30 a.m.

1 stop23h 45m

Lisbon Humberto Delgado

Fri 28/8

11:25 a.m.-2:41 p.m.

1 stop32h 16m

C$ 1,002

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Fri 21/8

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

1 stop12h 10m

Lisbon Humberto Delgado

Sat 29/8

11:55 a.m.-6:30 p.m.

1 stop11h 35m

C$ 1,009

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Mon 28/12

5:30 a.m.-10:40 a.m.

1 stop24h 10m

Lisbon Humberto Delgado

Mon 4/1

11:20 a.m.-2:23 p.m.

2 stops32h 03m

C$ 1,046
Quickest round-trip

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Tue 13/10

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

Nonstop6h 20m

Lisbon Humberto Delgado

Sat 24/10

12:45 p.m.-3:28 p.m.

Nonstop7h 43m

C$ 1,063

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/8

Showing 1-10 of 23 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 9 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$ 1,478 in December.
The cheapest round-trip price found within the last 5 days was C$ 916 on United Airlines (2 Dec-8 Dec).

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$ 967, United Airlines can have you in Lisbon from Boston in 6h 25m. 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%).

  • What are the cheapest flights from Boston to Lisbon?

    While on average a flight from Boston to Lisbon is generally C$ 786, our data shows the cheapest flight currently is C$ 633. When looking at the most popular route, (Boston Logan Intl - Lisbon Humberto Delgado), you can expect to pay C$ 1,126 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$ 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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