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Cheap flights from Boston to Lisbon from £235

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 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LIS
15 Jan — 22 Jan1
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 58 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

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 16 December 2025.

Wed 31/1221:35BOS - LIS
1 stop12h 15mBritish Airways
Wed 7/118:35LIS - BOS
1 stop32h 20mBritish Airways
Deal found 15/12£510
Wed 31/1220:35BOS - LIS
Nonstop6h 25mKLM
Sun 11/105:00LIS - BOS
1 stop18h 55mKLM
Deal found 15/12£517
Tue 30/1205:30BOS - LIS
1 stop22h 50mUnited Airlines
Tue 13/111:20LIS - BOS
2 stops30h 53mUnited Airlines
Deal found 15/12£520
Wed 31/1214:15BOS - LIS
1 stop15h 00mUnited Airlines
Tue 13/111:20LIS - BOS
2 stops30h 53mUnited Airlines
Deal found 15/12£521
Mon 29/1220:35BOS - LIS
Nonstop6h 25mDelta
Tue 13/110:00LIS - BOS
1 stop17h 22mDelta
Deal found 15/12£525
Mon 29/1220:35BOS - LIS
Nonstop6h 25mDelta
Mon 12/111:25LIS - BOS
1 stop31h 05mDelta
Deal found 15/12£526
Wed 31/1219:44BOS - LIS
1 stop9h 31mUnited Airlines
Mon 12/110:15LIS - BOS
1 stop11h 59mUnited Airlines
Deal found 15/12£529
Tue 30/1205:30BOS - LIS
1 stop22h 50mUnited Airlines
Mon 12/110:15LIS - BOS
2 stops16h 23mUnited Airlines
Deal found 15/12£532
Tue 30/1220:35BOS - LIS
Nonstop6h 25mDelta
Tue 13/105:30LIS - BOS
2 stops21h 52mDelta
Deal found 15/12£533
Wed 31/1218:55BOS - LIS
1 stop14h 55mBritish Airways
Sat 10/118:40LIS - BOS
1 stop30h 05mBritish Airways
Deal found 14/12£555
Wed 31/1214:15BOS - LIS
1 stop15h 00mUnited Airlines
Tue 6/106:10LIS - BOS
1 stop17h 25mUnited Airlines
Deal found 15/12£631

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 16 December 2025.

Round-trip from

£383

One-way from

£235

Popular in

June

Cheapest in

November

Average price

£650
Delta
  • Delta
  • 23/1-2/2
  • 2 total stops
  • 44h 27m total
  • Boston to Lisbon
Search Deals
LEVEL
  • LEVEL
  • 6/5
  • 1 total stop
  • 17h 40m total
  • Boston to Lisbon
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£65 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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 16 December 2025.
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

Wed 28/1

14:20-08:10

2 stops12h 50m

Lisbon Humberto Delgado

Wed 4/2

14:00-23:49

2 stops14h 49m

£390

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Mon 16/2

18:30-17:30

1 stop18h 00m

Lisbon Humberto Delgado

Sun 1/3

10:00-22:48

1 stop17h 48m

£390

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Thu 19/3

21:30-17:30

1 stop16h 00m

Lisbon Humberto Delgado

Tue 24/3

16:50-14:20

1 stop25h 30m

£391

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sun 22/2

17:35-16:30

1 stop17h 55m

Lisbon Humberto Delgado

Thu 26/2

08:00-15:50

2 stops36h 50m

£401

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Tue 24/2

06:15-16:05

2 stops28h 50m

Lisbon Humberto Delgado

Fri 27/2

06:55-09:10

2 stops31h 15m

£440

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Mon 16/3

23:40-20:25

1 stop16h 45m

Lisbon Humberto Delgado

Sun 29/3

17:45-21:05

1 stop32h 20m

£445

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Mon 23/3

19:05-05:35

Nonstop6h 30m

Lisbon Humberto Delgado

Tue 31/3

23:45-19:55

1 stop25h 10m

£446

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Thu 19/3

21:40-08:00

Nonstop6h 20m

Lisbon Humberto Delgado

Thu 26/3

10:00-18:27

1 stop12h 27m

£450

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Fri 6/3

15:51-08:50

1 stop11h 59m

Lisbon Humberto Delgado

Sun 8/3

11:05-18:05

1 stop11h 00m

£453

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Wed 11/3

19:30-11:20

1 stop11h 50m

Lisbon Humberto Delgado

Mon 23/3

11:15-14:55

Nonstop7h 40m

£457

Flights are sorted by cheapest return flights first.

Deals found on 15/12

Showing 1-10 of 22 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 12 December 2025.

The best time to book flights from Boston to Lisbon is 58 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, February is the cheapest month in which you can book a flight from Boston to Lisbon (average of £262). Flying from Boston to Lisbon in June is currently the most expensive (average of £444). 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 16 December 2025.

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.

How much does it cost for a return flight 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?

    Within the past month, 8 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 12h 50m. Fly via United Airlines, Scandinavian Airlines, or Delta to get the fastest option. There are 3182 mi between Boston and Lisbon. This flight may include one or multiple stops.

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

    Consider JetBlue (84%), TAP AIR PORTUGAL (84%) or Emirates (80%) when booking your flight. These represent the most reliable airlines when flying from Boston to Lisbon.

  • 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, February is the cheapest month in which you can book a flight from Boston to Lisbon (average of £262). Flying from Boston to Lisbon in June is currently the most expensive (average of £444). 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
Madeira
Setúbal
Oeiras
Fátima
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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