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Cheap flights from Boston to Lisbon from C$ 447

BOS — LIS
24 Sep — 1 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 Wednesday or Tuesday 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

Mon 30/117:50 p.m. -
1 stop12h 00m
Tue 12/111:35 a.m. -
1 stop11h 15m
Deal found 20/8C$ 889
Sat 28/117:50 p.m. -
1 stop12h 00m
Tue 8/122:00 p.m. -
1 stop32h 50m
Deal found 20/8C$ 890
Mon 9/117:50 p.m. -
1 stop12h 00m
Tue 17/112:00 p.m. -
1 stop32h 50m
Deal found 23/8C$ 892
Fri 16/105:50 a.m. -
1 stop22h 30m
Tue 10/1112:50 p.m. -
2 stops28h 56m
Deal found 20/8C$ 908
Sun 18/103:35 p.m. -
1 stop12h 45m
Fri 20/1111:20 a.m. -
2 stops31h 11m
Deal found 21/8C$ 910
Tue 27/106:00 a.m. -
1 stop22h 10m
Thu 5/118:55 a.m. -
1 stop30h 03m
Deal found 20/8C$ 911
Tue 20/106:00 a.m. -
1 stop21h 20m
Thu 19/118:55 a.m. -
1 stop30h 03m
Deal found 21/8C$ 913
Sat 17/108:25 p.m. -
1 stop30h 55m
Sat 21/1111:20 a.m. -
1 stop31h 58m
Deal found 21/8C$ 918
Sat 17/108:25 p.m. -
1 stop30h 55m
Mon 23/1111:20 a.m. -
1 stop27h 57m
Deal found 23/8C$ 920
Thu 5/115:30 a.m. -
2 stops22h 50m
Sun 8/1110:40 a.m. -
2 stops31h 51m
Deal found 21/8C$ 922

Find flight deals from Boston to Lisbon

Round-trip from

C$ 889

One-way from

C$ 447

Popular in

June

Cheapest in

February

Average price

C$ 1,226

Good round-trip deal

C$ 982 or less

Good one-way deal

C$ 463 or less
Icelandair
  • Icelandair
  • 17/2-23/2
  • 2 total stops
  • 23h 15m total
  • Boston to Lisbon
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LEVEL
  • LEVEL
  • 14/10
  • 1 total stop
  • 14h 30m total
  • Boston to Lisbon
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Highest demand for flights based on searches. 19% potential increase in price (C$ 379 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 45 potential savings vs. average RT price).
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Average for round-trip flights in August 2026
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Price to beat on a round-trip flight from Boston Logan Intl to Lisbon Humberto Delgado.
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Price to beat on a one-way flight from Boston Logan Intl to Lisbon Humberto Delgado.
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Boston to Lisbon that are best for you.

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Price

Cheapest round-trip

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Thu 12/11

2:40 p.m.-8:10 a.m.

2 stops12h 30m

Lisbon Humberto Delgado

Mon 16/11

10:15 a.m.-11:59 p.m.

2 stops18h 44m

C$ 944

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$ 954

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Sat 20/2

2:16 p.m.-8:10 a.m.

2 stops12h 54m

Lisbon Humberto Delgado

Fri 26/2

2:20 p.m.-6:35 p.m.

1 stop33h 15m

C$ 961

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Thu 15/10

10:40 a.m.-9:20 a.m.

1 stop17h 40m

Lisbon Humberto Delgado

Thu 22/10

11:25 a.m.-6:07 p.m.

1 stop11h 42m

C$ 975

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Fri 23/10

5:45 a.m.-8:20 a.m.

2 stops21h 35m

Lisbon Humberto Delgado

Fri 30/10

12:20 p.m.-7:43 a.m.

2 stops23h 23m

C$ 986

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Thu 1/10

6:00 a.m.-11:05 a.m.

1 stop24h 05m

Lisbon Humberto Delgado

Sat 10/10

6:15 a.m.-5:40 p.m.

1 stop16h 25m

C$ 1,020

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Wed 30/9

5:10 p.m.-8:50 a.m.

1 stop10h 40m

Lisbon Humberto Delgado

Fri 9/10

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

Nonstop7h 43m

C$ 1,040

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

5:35 a.m.-3:00 p.m.

1 stop14h 25m

C$ 1,066

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Mon 21/12

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

1 stop24h 10m

Lisbon Humberto Delgado

Mon 28/12

3:35 p.m.-8:20 p.m.

1 stop33h 45m

C$ 1,088

BostonLisbon

BOS Boston Logan Intl - LIS Lisbon Humberto Delgado

BOSLIS

Boston Logan Intl

Thu 10/9

4:40 p.m.-10:55 a.m.

1 stop13h 15m

Lisbon Humberto Delgado

Fri 18/9

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

Nonstop7h 35m

C$ 1,092

Flights are sorted by cheapest round-trip flights first.

Deals found on 24/8

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

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$ 899). Flying from Boston to Lisbon in June is currently the most expensive (average of C$ 1,511). 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$ 1,064 and C$ 1,484 in November.
The cheapest round-trip price found within the last 5 days was C$ 889 on Icelandair (30 Nov-12 Jan).

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 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$ 944, United Airlines can have you in Lisbon from Boston in 12h 30m. The distance from Boston to Lisbon is about 5121 km.

  • 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 (73%), JetBlue (71%), TAP AIR PORTUGAL (71%).

  • What are the cheapest flights from Boston to Lisbon?

    While on average a flight from Boston to Lisbon is generally C$ 886, our data shows the cheapest flight currently is C$ 463. When looking at the most popular route, (Boston Logan Intl - Lisbon Humberto Delgado), you can expect to pay C$ 1,040 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$ 899). Flying from Boston to Lisbon in June is currently the most expensive (average of C$ 1,511). 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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