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Cheap flights from Boston to Lisbon from £234

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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LIS
17 Mar — 24 Mar1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Boston Logan Intl to Lisbon Humberto Delgado are usually found in November or February, booked 85 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

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 15 February 2026.

Sun 26/423:25
BOS
-
LIS
Nonstop6h 20m
Virgin Atlantic
Wed 6/510:00
LIS
-
BOS
1 stop14h 38m
Virgin Atlantic
Deal found 13/2£369
Tue 7/408:30
BOS
-
LIS
2 stops19h 50m
United Airlines
Wed 15/411:25
LIS
-
BOS
1 stop15h 02m
United Airlines
Deal found 14/2£370
Mon 27/415:28
BOS
-
LIS
1 stop11h 52m
United Airlines
Fri 8/513:00
LIS
-
BOS
1 stop14h 39m
United Airlines
Deal found 11/2£370
Mon 20/417:25
BOS
-
LIS
1 stop9h 55m
United Airlines
Thu 30/412:20
LIS
-
BOS
1 stop16h 39m
United Airlines
Deal found 13/2£372
Mon 20/411:11
BOS
-
LIS
1 stop16h 54m
Multiple Airlines
Tue 28/420:45
LIS
-
BOS
1 stop24h 25m
Multiple Airlines
Deal found 12/2£373
Mon 20/417:25
BOS
-
LIS
1 stop9h 55m
United Airlines
Tue 28/411:25
LIS
-
BOS
2 stops27h 39m
United Airlines
Deal found 12/2£375
Mon 13/419:05
BOS
-
LIS
1 stop11h 10m
Delta
Wed 29/412:45
LIS
-
BOS
Nonstop7h 36m
Delta
Deal found 13/2£376
Wed 8/407:25
BOS
-
LIS
1 stop10h 35m
Multiple Airlines
Wed 29/406:35
LIS
-
BOS
1 stop14h 35m
Multiple Airlines
Deal found 13/2£376
Tue 7/408:30
BOS
-
LIS
2 stops19h 50m
United Airlines
Tue 14/411:25
LIS
-
BOS
2 stops27h 39m
United Airlines
Deal found 14/2£377
Fri 10/422:50
BOS
-
LIS
1 stop28h 40m
LEVEL
Mon 13/421:20
LIS
-
BOS
1 stop28h 45m
LEVEL
Deal found 13/2£378
Sun 15/321:40
BOS
-
LIS
Nonstop6h 20m
Delta
Tue 24/312:20
LIS
-
BOS
1 stop30h 10m
Delta
Deal found 11/2£379

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 15 February 2026.

Round-trip from

£369

One-way from

£234

Popular in

June

Cheapest in

November

Average price

£469

Good round-trip deal

£487 or less
Virgin Atlantic
  • Virgin Atlantic
  • 26/4-6/5
  • 1 total stop
  • 20h 58m total
  • Boston to Lisbon
Search Deals
LEVEL
  • LEVEL
  • 4/8
  • 1 total stop
  • 13h 10m total
  • Boston to Lisbon
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£62 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Boston Logan Intl to Lisbon Humberto Delgado.
Search Deals

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 15 February 2026.
Use the filters below to find and compare flights from Boston to Lisbon that are best for you.

Fly from

Boston

Fly to

Lisbon

Route

Depart

Return

Price

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Mon 16/3

19:34-10:15

1 stop10h 41m

Lisbon Humberto Delgado

Wed 25/3

10:15-17:19

1 stop11h 04m

£372

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Mon 20/4

17:25-08:20

1 stop9h 55m

Lisbon Humberto Delgado

Tue 28/4

11:25-10:04

2 stops27h 39m

£375

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Wed 8/4

07:25-23:00

1 stop10h 35m

Lisbon Humberto Delgado

Wed 29/4

08:55-16:10

1 stop12h 15m

£376

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Mon 13/4

17:25-08:20

1 stop9h 55m

Lisbon Humberto Delgado

Wed 6/5

10:25-00:59

2 stops19h 34m

£376

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Wed 18/3

21:40-08:00

Nonstop6h 20m

Lisbon Humberto Delgado

Wed 25/3

05:30-23:30

2 stops22h 00m

£377

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Tue 7/4

16:35-18:45

1 stop21h 10m

Lisbon Humberto Delgado

Thu 16/4

12:45-15:21

Nonstop7h 36m

£384

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Wed 8/4

21:50-23:15

1 stop20h 25m

Lisbon Humberto Delgado

Wed 15/4

07:20-22:35

1 stop20h 15m

£409

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sat 14/3

08:30-09:55

1 stop21h 25m

Lisbon Humberto Delgado

Wed 25/3

12:55-22:55

1 stop14h 00m

£409

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Tue 7/4

05:45-09:20

2 stops22h 35m

Lisbon Humberto Delgado

Mon 13/4

11:25-10:04

2 stops27h 39m

£414

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sun 12/4

17:40-16:00

2 stops17h 20m

Lisbon Humberto Delgado

Sun 19/4

07:00-19:38

2 stops17h 38m

£417

Flights are sorted by cheapest return flights first.

Deals found on 11/2

Showing 1-10 of 21 results
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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 return 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?

Use this chart to determine the optimal time to book a return flight from Boston to Lisbon. Price data was last updated on 6 February 2026.

The best time to book flights from Boston to Lisbon is 85 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Boston to Lisbon?

Currently, July is the cheapest month in which you can book a flight from Boston to Lisbon (average of £236). Flying from Boston to Lisbon in June is currently the most expensive (average of £434). 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 15 February 2026.

When flying from Boston to Lisbon, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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?

    Within the past month, 7 users have taken a look at flights from Boston Logan Intl to Lisbon Humberto Delgado.

  • How long is the flight from Boston to Lisbon?

    There are many flights that can get you from Boston to Lisbon in 10h 41m. Fly via United Airlines to get the fastest option. There are 3182 mi between Boston and Lisbon.

  • What are the most reliable airlines from Boston to Lisbon?

    Consider KLM (78%), Air France (78%) or Delta (78%) when booking your flight. These represent the most reliable airlines when flying from Boston to Lisbon.

  • What are the cheapest flights from Boston to Lisbon?

    While on average a flight from Boston to Lisbon is generally £526, our data shows the cheapest flight currently is £323. When looking at the most popular route, (Boston Logan Intl - Lisbon Humberto Delgado), you can expect to pay £353 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 holiday 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, July is the cheapest month in which you can book a flight from Boston to Lisbon (average of £236). Flying from Boston to Lisbon in June is currently the most expensive (average of £434). 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
Setúbal
Oeiras
Fátima
Madeira
Estoril
Óbidos
Almada
Beja
Sintra
Costa da Caparica
Nazaré
Sesimbra
Peniche

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Can Cheapflights find flights from Boston to Lisbon with no change fees?

Need flexible booking options for your flight to Lisbon from Boston? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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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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