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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LIS
25 Sep — 2 Oct1
Return
1 adult
Economy
Return
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 Monday or Friday and return on a Monday
Cheap flight deals from Boston to Lisbon
Enter your travel dates to find the best prices.
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Best
Direct
Last-minute
One-way
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 26 August 2026.
Mon 9/1119:50 -
1 stop12h 00m
Thu 19/1114:00 -
1 stop32h 50m
Deal found 23/8£473
Sun 18/1015:35 -
1 stop12h 45m
Fri 20/1111:20 -
2 stops31h 11m
Deal found 23/8£482
Thu 5/1112:00 -
1 stop15h 10m
Tue 10/1112:50 -
2 stops30h 09m
Deal found 24/8£483
Mon 19/1019:00 -
1 stop32h 20m
Thu 12/1108:55 -
1 stop30h 03m
Deal found 23/8£484
Sun 18/1006:00 -
2 stops22h 20m
Sun 15/1110:40 -
2 stops31h 51m
Deal found 23/8£485
Fri 16/1012:30 -
1 stop17h 35m
Tue 10/1112:50 -
2 stops30h 09m
Deal found 23/8£486
Thu 12/1109:30 -
1 stop19h 50m
Mon 16/1111:20 -
2 stops32h 12m
Deal found 24/8£487
Sat 17/1020:25 -
1 stop30h 55m
Sat 21/1111:20 -
1 stop31h 58m
Deal found 23/8£488
Fri 6/1120:05 -
2 stops31h 50m
Tue 17/1112:50 -
2 stops28h 36m
Deal found 23/8£489
Thu 12/1119:41 -
2 stops31h 29m
Fri 27/1111:20 -
1 stop32h 33m
Deal found 23/8£491
Thu 15/1005:50 -
1 stop22h 30m
Thu 19/1108:55 -
1 stop10h 58m
Deal found 23/8£492
Thu 31/1217:00 -
1 stop10h 10m
Thu 14/108:55 -
1 stop15h 07m
Deal found 22/8£493
Best flights from Boston to Lisbon
Discover carefully curated flight deals from Boston to Lisbon that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 26 August 2026.
Mon 28/907:38 -
2 stops20h 42m
Sun 11/1006:15 -
1 stop16h 25m
Deal found 24/8£620
Fri 18/916:40 -
1 stop13h 15m
Sun 27/905:00 -
1 stop16h 35m
Deal found 25/8£696
Sun 6/922:40 -
Nonstop6h 35m
Sat 12/908:05 -
1 stop17h 15m
Deal found 25/8£752
Sun 6/923:00 -
2 stops15h 15m
Sat 12/908:45 -
2 stops15h 05m
Deal found 22/8£1,142
Sun 6/921:55 -
1 stop20h 10m
Sat 12/918:55 -
2 stops27h 00m
Deal found 23/8£1,149
Tue 6/1023:25 -
Nonstop6h 20m
Mon 12/1012:45 -
Nonstop7h 43m
Deal found 26/8£761
Direct flights from Boston to Lisbon
Explore direct flight options from Boston to Lisbon based on user searches, and compare prices and availability for your desired travel dates. Data last updated 26 August 2026.
Thu 29/1022:35 -
Nonstop6h 20m
Wed 11/1111:15 -
Nonstop7h 44m
Deal found 25/8£503
Mon 21/922:45 -
Nonstop6h 35m
Thu 1/1012:00 -
Nonstop7h 45m
Deal found 22/8£506
Tue 20/1023:25 -
Nonstop6h 20m
Sat 21/1111:15 -
Nonstop7h 44m
Deal found 23/8£512
Thu 3/1221:30 -
Nonstop6h 25m
Wed 9/1211:15 -
Nonstop7h 44m
Deal found 24/8£513
Sun 18/1023:25 -
Nonstop6h 20m
Thu 29/1011:15 -
Nonstop7h 44m
Deal found 25/8£515
Wed 28/1022:40 -
Nonstop6h 20m
Thu 5/1111:15 -
Nonstop7h 44m
Deal found 26/8£524
Sun 18/1023:25 -
Nonstop6h 20m
Sun 1/1111:15 -
Nonstop7h 44m
Deal found 25/8£525
Sat 20/221:40 -
Nonstop6h 20m
Tue 2/311:15 -
Nonstop7h 45m
Deal found 24/8£529
Tue 20/1023:25 -
Nonstop6h 20m
Fri 30/1010:55 -
Nonstop7h 44m
Deal found 25/8£534
Mon 19/1022:45 -
Nonstop6h 35m
Mon 26/1017:00 -
Nonstop7h 55m
Deal found 25/8£535
Mon 21/923:25 -
Nonstop6h 20m
Thu 8/1012:45 -
Nonstop7h 43m
Deal found 24/8£537
Sun 3/121:35 -
Nonstop6h 25m
Sun 21/311:15 -
Nonstop7h 45m
Deal found 25/8£538
Last-minute flights from Boston to Lisbon
Discover last-minute flight deals from Boston to Lisbon. Data last updated 26 August 2026 and is based on user searches.
Wed 9/922:55 -
1 stop28h 35m
Wed 16/919:10 -
1 stop30h 55m
Deal found 22/8£518
Wed 9/922:55 -
1 stop28h 35m
Tue 15/921:15 -
1 stop28h 50m
Deal found 22/8£522
Wed 16/922:55 -
1 stop13h 15m
Wed 30/919:10 -
1 stop30h 55m
Deal found 22/8£507
Sun 20/923:35 -
1 stop27h 55m
Wed 30/917:45 -
1 stop32h 20m
Deal found 23/8£517
Mon 21/922:45 -
Nonstop6h 35m
Thu 1/1012:00 -
Nonstop7h 45m
Deal found 22/8£506
Mon 21/918:50 -
1 stop9h 30m
Thu 1/1011:25 -
1 stop32h 16m
Deal found 22/8£510
Mon 21/918:55 -
1 stop11h 05m
Thu 1/1011:25 -
2 stops16h 15m
Deal found 22/8£526
Tue 22/914:28 -
1 stop15h 02m
Tue 29/911:25 -
2 stops32h 30m
Deal found 24/8£527
Thu 24/922:55 -
1 stop17h 35m
Thu 1/1009:10 -
1 stop16h 55m
Deal found 24/8£514
Mon 28/922:45 -
Nonstop6h 35m
Sun 11/1023:45 -
1 stop25h 35m
Deal found 24/8£518
Mon 28/920:50 -
1 stop12h 00m
Sun 18/1015:00 -
1 stop11h 45m
Deal found 23/8£521
One-way flights from Boston to Lisbon
Search for one-way flight options from Boston to Lisbon. Find affordable one-way fares based on user searches. Data last updated 26 August 2026.
Thu 5/1119:10 -
1 stop14h 40m
Deal found 24/8£245
Thu 1/1022:55 -
1 stop17h 35m
Deal found 26/8£251
Mon 15/219:50 -
2 stops14h 50m
Deal found 25/8£257
Mon 15/218:00 -
Nonstop6h 35m
Deal found 25/8£261
Sun 13/923:35 -
1 stop27h 55m
Deal found 23/8£264
Sat 7/1117:50 -
1 stop19h 25m
Deal found 23/8£271
Wed 9/922:55 -
1 stop28h 35m
Deal found 24/8£276
Thu 1/1022:55 -
1 stop17h 35m
Deal found 22/8£279
Mon 21/923:25 -
Nonstop6h 20m
Deal found 24/8£304
Mon 26/1010:35 -
1 stop20h 05m
Deal found 25/8£306
Tue 22/914:28 -
1 stop15h 02m
Deal found 24/8£306
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 26 August 2026.
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 7,457,451 searches. Data last updated 26 August 2026.
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 return flight
BostonLisbon
BOS Boston Logan Intl - LIS Lisbon Humberto Delgado
BOSLIS
Boston Logan Intl
Mon 28/9
07:38-09:20
2 stops20h 42m
Lisbon Humberto Delgado
Sun 11/10
06:15-17:40
1 stop16h 25m
£620
BostonLisbon
BOS Boston Logan Intl - LIS Lisbon Humberto Delgado
BOSLIS
Boston Logan Intl
Fri 18/9
16:40-10:55
1 stop13h 15m
Lisbon Humberto Delgado
Sun 27/9
05:00-16:35
1 stop16h 35m
£696
BostonLisbon
BOS Boston Logan Intl - LIS Lisbon Humberto Delgado
BOSLIS
Boston Logan Intl
Sun 6/9
22:40-10:15
Nonstop6h 35m
Lisbon Humberto Delgado
Sat 12/9
08:05-20:20
1 stop17h 15m
£752
Fastest return journey
BostonLisbon
BOS Boston Logan Intl - LIS Lisbon Humberto Delgado
BOSLIS
Boston Logan Intl
Tue 6/10
23:25-10:45
Nonstop6h 20m
Lisbon Humberto Delgado
Mon 12/10
12:45-15:28
Nonstop7h 43m
£761
BostonLisbon
BOS Boston Logan Intl - LIS Lisbon Humberto Delgado
BOSLIS
Boston Logan Intl
Sun 6/9
23:00-19:15
2 stops15h 15m
Lisbon Humberto Delgado
Sat 12/9
08:45-18:50
2 stops15h 05m
£1,142
BostonLisbon
BOS Boston Logan Intl - LIS Lisbon Humberto Delgado
BOSLIS
Boston Logan Intl
Sun 6/9
21:55-23:05
1 stop20h 10m
Lisbon Humberto Delgado
Sat 12/9
18:55-16:55
2 stops27h 00m
£1,149
Cheapest one-way
Fastest single journey
BostonLisbon
BOS Boston Logan Intl - LIS Lisbon Humberto Delgado
BOSLIS
Boston Logan Intl
Mon 5/10
23:25-10:45
Nonstop6h 20m
£304
BostonLisbon
BOS Boston Logan Intl - LIS Lisbon Humberto Delgado
BOSLIS
Boston Logan Intl
Tue 29/9
23:25-10:45
Nonstop6h 20m
£304
BostonLisbon
BOS Boston Logan Intl - LIS Lisbon Humberto Delgado
BOSLIS
Boston Logan Intl
Mon 21/9
23:25-10:45
Nonstop6h 20m
£304
BostonLisbon
BOS Boston Logan Intl - LIS Lisbon Humberto Delgado
BOSLIS
Boston Logan Intl
Thu 24/9
07:38-10:30
2 stops21h 52m
£350
Flights are sorted by cheapest return flights first.
Deals found on 25/8
Showing 1-10 of 18 resultsSorted by cheapest first
1
2
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.
BOS-LIS
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
Prices
Airlines
Delays
How far ahead should I book a flight from Boston to Lisbon?
The best time to book flights from Boston to Lisbon is 14 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 £477). Flying from Boston to Lisbon in June is currently the most expensive (average of £801). 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 26 August 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.
How much does it cost for a return flight from Boston to Lisbon?
Airfare is below average for this route at the moment.
Boston to Lisbon flights typically cost between £564 and £787 in February.The cheapest return price found within the last 5 days was £471 on Icelandair (17 Feb–23 Feb).
Weekly flight availability from Boston to Lisbon
Explore weekly flight availability from Boston to Lisbon. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 26 August 2026.
The most flights from BOS to LIS are scheduled on a Monday (10 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (6 on average).
How often are flights from Boston to Lisbon delayed?
About 16% of weekly flights between Boston and Lisbon have experienced delays in the past year, with the average delay time being 139 minutes.
What is the most punctual flight time for Boston to Lisbon flights?
Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Boston to Lisbon flights?
Over the past year, TAP AIR PORTUGAL have had the lowest number of delays on this route, with just 15% of flights being delayed.
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, 4 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 35m. Fly via United Airlines, KLM, or TAP AIR PORTUGAL 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 Emirates (73%), JetBlue (71%) or TAP AIR PORTUGAL (71%) 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 £477). Flying from Boston to Lisbon in June is currently the most expensive (average of £801). 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.
Explore flights to Lisbon departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 26 August 2026.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Boston to Lisbon?
Deals for Boston to Lisbon flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.
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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