Find flights
Deals
When to book
FAQs

Cheap flights from Boston to Lisbon from C$ 487

BOS — LIS
20 Oct — 27 Oct1
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

Sat 31/108:50 p.m. -
1 stop12h 00m
Thu 12/112:00 p.m. -
1 stop32h 50m
Deal found 20/9C$ 949
Mon 2/117:50 p.m. -
1 stop12h 00m
Thu 12/112:00 p.m. -
1 stop32h 50m
Deal found 16/9C$ 951
Mon 19/101:35 p.m. -
1 stop13h 25m
Tue 17/1111:15 a.m. -
Nonstop7h 44m
Deal found 19/9C$ 954
Sat 14/115:35 p.m. -
1 stop17h 30m
Tue 17/114:55 p.m. -
2 stops35h 13m
Deal found 17/9C$ 955
Thu 5/119:35 p.m. -
Nonstop6h 20m
Fri 13/1110:00 a.m. -
1 stop14h 32m
Deal found 20/9C$ 958
Thu 15/1011:25 p.m. -
Nonstop6h 20m
Tue 15/1210:00 a.m. -
1 stop14h 01m
Deal found 19/9C$ 962
Sat 17/1011:25 p.m. -
Nonstop6h 20m
Tue 17/115:30 a.m. -
1 stop13h 59m
Deal found 19/9C$ 963
Mon 19/1010:40 a.m. -
1 stop17h 40m
Tue 17/1112:50 p.m. -
2 stops28h 36m
Deal found 19/9C$ 968
Mon 19/101:35 p.m. -
1 stop13h 25m
Mon 16/115:00 a.m. -
1 stop14h 13m
Deal found 19/9C$ 969
Sat 17/108:25 p.m. -
1 stop30h 55m
Thu 19/118:55 a.m. -
1 stop29h 53m
Deal found 16/9C$ 970
Sat 17/1011:25 p.m. -
Nonstop6h 20m
Fri 20/1110:55 a.m. -
Nonstop7h 44m
Deal found 18/9C$ 972
Sat 17/108:25 p.m. -
2 stops31h 55m
Thu 10/128:55 a.m. -
2 stops32h 32m
Deal found 19/9C$ 973

Find flight deals from Boston to Lisbon

Round-trip from

C$ 949

One-way from

C$ 487

Popular in

June

Cheapest in

February

Average price

C$ 1,271

Good round-trip deal

C$ 1,102 or less

Good one-way deal

C$ 519 or less
Delta
  • Delta
  • 5/11-13/11
  • Nonstop
  • 14h 04m total
  • Boston to Lisbon
Search Deals
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 31/10-31/12
  • Nonstop
  • 6h 35m total
  • Boston to Lisbon
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (C$ 373 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 45 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2026
Search Deals
Price to beat on a round-trip flight from Boston Logan Intl to Lisbon Humberto Delgado.
Search Deals
Price to beat on a one-way flight from Boston Logan Intl to Lisbon Humberto Delgado.
Search Deals

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

Fri 19/3

11:10 p.m.-9:45 a.m.

Nonstop6h 35m

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

Mon 19/10

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

Nonstop6h 20m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 575

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Wed 14/10

10:51 a.m.-9:20 a.m.

2 stops17h 29m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 590

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Sun 27/9

11:35 p.m.-8:30 a.m.

1 stop27h 55m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 621

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Sat 24/10

10:40 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$ 647

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Fri 16/10

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

Nonstop6h 20m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 649

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Wed 2/12

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$ 670
Quickest round-trip

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Fri 19/3

10:45 p.m.-9:00 a.m.

Nonstop6h 15m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 740

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Wed 23/12

7:40 p.m.-8:10 a.m.

1 stop31h 30m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 762

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Fri 2/10

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

Nonstop6h 35m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 899

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/9

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

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$ 921). Flying from Boston to Lisbon in June is currently the most expensive (average of C$ 1,535). 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$ 1,042 and C$ 1,423 in October.
The cheapest round-trip price found within the last 5 days was C$ 949 on Icelandair (31 Oct-12 Nov).

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$ 954, KLM can have you in Lisbon from Boston in 9h 55m. 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 (80%), airBaltic (77%), JetBlue (77%).

  • What are the cheapest flights from Boston to Lisbon?

    While on average a flight from Boston to Lisbon is generally C$ 856, our data shows the cheapest flight currently is C$ 519. When looking at the most popular route, (Boston Logan Intl - Lisbon Humberto Delgado), you can expect to pay C$ 1,044 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$ 921). Flying from Boston to Lisbon in June is currently the most expensive (average of C$ 1,535). 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

Browse thousands of different options on Cheapflights for your next trip

Fly with Cheapflights

How does Cheapflights help users find flights from Boston to Lisbon?

Cheapflights makes it easy to find Boston to Lisbon flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Boston to Lisbon?

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.

Can Cheapflights notify me if prices for flights from Boston to Lisbon become cheaper?

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.