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Cheap flights from Boston to Lisbon from £228

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 18/4. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LIS
2 Mar — 9 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 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 31 January 2026.

Thu 26/220:40
BOS
-
LIS
Nonstop6h 20m
KLM
Mon 2/310:00
LIS
-
BOS
1 stop17h 48m
KLM
Deal found 29/1£367
Sun 8/321:40
BOS
-
LIS
Nonstop6h 20m
Delta
Tue 17/305:30
LIS
-
BOS
1 stop13h 00m
Delta
Deal found 30/1£368
Sun 1/320:40
BOS
-
LIS
Nonstop6h 20m
Delta
Thu 19/305:00
LIS
-
BOS
1 stop13h 20m
Delta
Deal found 30/1£369
Thu 26/209:45
BOS
-
LIS
2 stops17h 25m
United Airlines
Mon 2/306:10
LIS
-
BOS
1 stop17h 25m
United Airlines
Deal found 29/1£370
Mon 2/314:20
BOS
-
LIS
2 stops12h 50m
United Airlines
Mon 9/311:55
LIS
-
BOS
1 stop11h 41m
United Airlines
Deal found 30/1£370
Sun 1/320:40
BOS
-
LIS
Nonstop6h 20m
KLM
Sun 8/310:00
LIS
-
BOS
1 stop25h 15m
KLM
Deal found 30/1£371
Mon 2/310:03
BOS
-
LIS
1 stop17h 57m
Delta
Mon 16/311:25
LIS
-
BOS
1 stop30h 55m
Delta
Deal found 30/1£372
Mon 16/318:30
BOS
-
LIS
1 stop9h 40m
United Airlines
Tue 24/305:00
LIS
-
BOS
1 stop13h 10m
United Airlines
Deal found 29/1£373
Wed 4/309:30
BOS
-
LIS
1 stop19h 45m
United Airlines
Sun 8/305:00
LIS
-
BOS
1 stop13h 10m
United Airlines
Deal found 30/1£373
Tue 15/917:40
BOS
-
LIS
1 stop16h 55m
Multiple Airlines
Mon 21/907:00
LIS
-
BOS
2 stops20h 36m
Multiple Airlines
Deal found 29/1£374
Sun 15/321:40
BOS
-
LIS
Nonstop6h 20m
Delta
Wed 25/305:30
LIS
-
BOS
2 stops21h 24m
Delta
Deal found 30/1£375
Sun 15/321:40
BOS
-
LIS
Nonstop6h 20m
Delta
Tue 24/305:30
LIS
-
BOS
2 stops29h 53m
Delta
Deal found 30/1£376

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 31 January 2026.

Round-trip from

£367

One-way from

£228

Popular in

June

Cheapest in

November

Average price

£485
KLM
  • KLM
  • 26/2-2/3
  • 1 total stop
  • 24h 08m total
  • Boston to Lisbon
Search Deals
18/4
  • 18/4
  • 3 total stops
  • 27h 00m total
  • Boston to Lisbon
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£61 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 January 2026
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 31 January 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

Sun 1/3

09:30-10:15

1 stop19h 45m

Lisbon Humberto Delgado

Tue 17/3

06:10-19:35

1 stop17h 25m

£367

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sun 1/3

20:40-08:00

Nonstop6h 20m

Lisbon Humberto Delgado

Wed 11/3

10:00-18:27

1 stop12h 27m

£367

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Wed 4/3

09:30-10:15

1 stop19h 45m

Lisbon Humberto Delgado

Tue 10/3

06:10-19:35

1 stop17h 25m

£367

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sun 1/3

20:40-08:00

Nonstop6h 20m

Lisbon Humberto Delgado

Sun 15/3

11:25-14:20

1 stop30h 55m

£369

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Mon 2/3

20:40-08:00

Nonstop6h 20m

Lisbon Humberto Delgado

Sun 15/3

11:25-14:20

1 stop30h 55m

£369

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Thu 26/2

09:30-10:15

1 stop19h 45m

Lisbon Humberto Delgado

Sun 1/3

11:55-23:57

1 stop17h 02m

£370

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Wed 4/3

09:30-10:15

1 stop19h 45m

Lisbon Humberto Delgado

Sun 8/3

05:00-13:10

1 stop13h 10m

£373

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Wed 25/2

14:20-08:10

2 stops12h 50m

Lisbon Humberto Delgado

Sun 1/3

05:00-19:08

2 stops19h 08m

£384

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sun 1/3

17:35-16:30

1 stop17h 55m

Lisbon Humberto Delgado

Wed 11/3

07:05-22:54

2 stops19h 49m

£386

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Tue 5/5

22:50-17:10

1 stop13h 20m

Lisbon Humberto Delgado

Mon 11/5

21:20-21:05

1 stop28h 45m

£411

Flights are sorted by cheapest return flights first.

Deals found on 28/1

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 23 January 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 £258). Flying from Boston to Lisbon in June is currently the most expensive (average of £437). 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 31 January 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, 6 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 6h 20m. Fly via United 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 (82%), TAP AIR PORTUGAL (82%) or Emirates (82%) 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, July is the cheapest month in which you can book a flight from Boston to Lisbon (average of £258). Flying from Boston to Lisbon in June is currently the most expensive (average of £437). 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
Madeira
Fátima
Estoril
Óbidos
Almada
Beja
Sintra
Costa da Caparica
Nazaré
Sesimbra
Peniche

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Lisbon from Boston.

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.

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.

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