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 14/10. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LIS
18 Sep — 25 Sep1
Round-trip
1 adult
Economy
Round-trip
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.
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Best
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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 19 August 2026.
Sat 14/116:00 p.m. -
Nonstop6h 35m
Sat 21/1111:40 a.m. -
Nonstop8h 00m
Deal found 15/8C$ 893
Sat 7/117:50 p.m. -
1 stop12h 00m
Thu 19/112:00 p.m. -
1 stop32h 50m
Deal found 16/8C$ 894
Thu 1/1010:55 p.m. -
1 stop14h 30m
Sat 10/107:20 p.m. -
1 stop31h 25m
Deal found 18/8C$ 895
Thu 24/910:55 p.m. -
1 stop17h 35m
Wed 30/97:10 p.m. -
1 stop30h 55m
Deal found 14/8C$ 902
Fri 13/1110:10 p.m. -
Nonstop6h 35m
Sat 21/1111:40 a.m. -
Nonstop8h 00m
Deal found 15/8C$ 911
Sat 7/117:50 p.m. -
1 stop12h 00m
Tue 17/112:00 p.m. -
1 stop32h 50m
Deal found 16/8C$ 912
Thu 5/119:00 a.m. -
1 stop18h 10m
Thu 26/118:55 a.m. -
2 stops32h 31m
Deal found 17/8C$ 913
Tue 3/116:00 a.m. -
1 stop21h 10m
Thu 12/118:55 a.m. -
1 stop30h 03m
Deal found 18/8C$ 915
Wed 11/119:00 a.m. -
2 stops16h 55m
Tue 17/1112:50 p.m. -
2 stops28h 36m
Deal found 16/8C$ 919
Thu 12/119:30 a.m. -
1 stop19h 50m
Mon 16/1111:20 a.m. -
2 stops32h 12m
Deal found 18/8C$ 920
Wed 4/116:00 a.m. -
1 stop21h 10m
Sat 14/1111:20 a.m. -
1 stop27h 57m
Deal found 18/8C$ 922
Fri 13/112:00 p.m. -
1 stop13h 00m
Fri 20/1111:15 a.m. -
Nonstop7h 44m
Deal found 15/8C$ 924
Best flights from Boston to Lisbon
Discover carefully curated flight deals from Boston to Lisbon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 19 August 2026.
Sun 15/119:10 a.m. -
1 stop17h 50m
Sun 22/1111:15 a.m. -
Nonstop7h 44m
Deal found 15/8C$ 924
Sun 15/113:41 p.m. -
1 stop11h 29m
Sun 22/1110:40 a.m. -
1 stop28h 18m
Deal found 15/8C$ 930
Thu 19/119:30 a.m. -
2 stops18h 50m
Sun 29/113:35 p.m. -
1 stop33h 45m
Deal found 16/8C$ 980
Fri 13/113:41 p.m. -
1 stop11h 29m
Sun 22/1110:40 a.m. -
1 stop15h 48m
Deal found 15/8C$ 930
Fri 13/115:00 p.m. -
1 stop10h 00m
Sat 21/1110:00 a.m. -
1 stop13h 55m
Deal found 15/8C$ 933
Sat 14/112:40 p.m. -
2 stops12h 30m
Sat 21/1112:20 p.m. -
1 stop11h 37m
Deal found 15/8C$ 933
Tue 15/129:10 a.m. -
1 stop17h 50m
Thu 24/1210:00 a.m. -
1 stop17h 26m
Deal found 18/8C$ 972
Wed 18/116:00 a.m. -
1 stop21h 10m
Sun 29/1110:40 a.m. -
1 stop33h 13m
Deal found 17/8C$ 956
Tue 15/126:00 a.m. -
1 stop21h 00m
Sun 20/1210:00 a.m. -
1 stop17h 26m
Deal found 18/8C$ 972
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 19 August 2026.
Sat 14/116:00 p.m. -
Nonstop6h 35m
Sat 21/1111:40 a.m. -
Nonstop8h 00m
Deal found 15/8C$ 893
Fri 13/1110:10 p.m. -
Nonstop6h 35m
Sat 21/1111:40 a.m. -
Nonstop8h 00m
Deal found 15/8C$ 911
Sun 1/119:40 p.m. -
Nonstop6h 20m
Tue 17/1111:15 a.m. -
Nonstop7h 44m
Deal found 18/8C$ 922
Sat 24/1010:40 p.m. -
Nonstop6h 20m
Sat 31/1011:15 a.m. -
Nonstop7h 44m
Deal found 17/8C$ 963
Tue 15/129:35 p.m. -
Nonstop6h 25m
Tue 22/1211:15 a.m. -
Nonstop7h 44m
Deal found 18/8C$ 965
Mon 12/1011:25 p.m. -
Nonstop6h 20m
Mon 19/1012:45 p.m. -
Nonstop7h 43m
Deal found 17/8C$ 966
Sat 12/129:35 p.m. -
Nonstop6h 25m
Sat 19/1211:15 a.m. -
Nonstop7h 44m
Deal found 19/8C$ 969
Sat 7/119:40 p.m. -
Nonstop6h 20m
Tue 17/1111:15 a.m. -
Nonstop7h 44m
Deal found 19/8C$ 970
Sun 10/16:00 p.m. -
Nonstop6h 35m
Tue 26/111:40 a.m. -
Nonstop8h 00m
Deal found 19/8C$ 979
Fri 16/1011:25 p.m. -
Nonstop6h 20m
Tue 10/1111:15 a.m. -
Nonstop7h 44m
Deal found 18/8C$ 992
Mon 7/911:25 p.m. -
Nonstop6h 20m
Mon 14/912:45 p.m. -
Nonstop7h 35m
Deal found 17/8C$ 1,005
Last-minute flights from Boston to Lisbon
Discover last-minute flight deals from Boston to Lisbon. Data last updated 19 August 2026 and is based on user searches.
Wed 26/88:50 p.m. -
1 stop19h 30m
Thu 3/910:20 p.m. -
1 stop28h 25m
Deal found 17/8C$ 955
Sun 30/811:20 p.m. -
Nonstop6h 25m
Sun 15/1111:15 a.m. -
Nonstop7h 44m
Deal found 16/8C$ 922
Sun 30/811:20 p.m. -
Nonstop6h 25m
Mon 16/1110:00 a.m. -
1 stop17h 55m
Deal found 16/8C$ 936
Thu 10/910:55 p.m. -
1 stop14h 30m
Tue 22/97:10 p.m. -
1 stop30h 55m
Deal found 16/8C$ 958
Wed 16/910:55 p.m. -
1 stop28h 35m
Wed 23/99:15 p.m. -
1 stop28h 50m
Deal found 18/8C$ 941
Thu 24/910:55 p.m. -
1 stop17h 35m
Wed 30/97:10 p.m. -
1 stop30h 55m
Deal found 14/8C$ 902
Thu 24/910:55 p.m. -
1 stop17h 35m
Wed 14/107:10 p.m. -
1 stop30h 55m
Deal found 18/8C$ 919
Thu 24/910:55 p.m. -
1 stop13h 15m
Tue 29/97:10 p.m. -
1 stop30h 55m
Deal found 15/8C$ 942
Sun 27/911:35 p.m. -
1 stop27h 55m
Thu 15/109:10 a.m. -
1 stop16h 55m
Deal found 18/8C$ 952
Tue 29/95:45 a.m. -
1 stop23h 45m
Thu 3/128:55 a.m. -
1 stop30h 03m
Deal found 19/8C$ 956
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 19 August 2026.
Wed 14/1010:55 p.m. -
1 stop14h 30m
Deal found 17/8C$ 440
Thu 1/1010:55 p.m. -
1 stop17h 35m
Deal found 16/8C$ 457
Sun 11/1011:35 p.m. -
1 stop27h 55m
Deal found 18/8C$ 465
Thu 24/910:55 p.m. -
1 stop17h 35m
Deal found 18/8C$ 472
Thu 15/1010:55 p.m. -
1 stop13h 15m
Deal found 18/8C$ 480
Sun 27/911:35 p.m. -
1 stop27h 55m
Deal found 14/8C$ 489
Wed 16/910:55 p.m. -
1 stop13h 15m
Deal found 17/8C$ 497
Wed 9/910:55 p.m. -
1 stop28h 35m
Deal found 16/8C$ 498
Wed 23/99:05 p.m. -
1 stop20h 10m
Deal found 19/8C$ 505
Sun 13/911:35 p.m. -
1 stop16h 05m
Deal found 15/8C$ 512
Mon 4/17:10 p.m. -
1 stop14h 45m
Deal found 19/8C$ 540
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 19 August 2026.
Customize 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 19 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 round-trip
BostonLisbon
BOS Boston Logan Intl - LIS Lisbon Humberto Delgado
BOSLIS
Boston Logan Intl
Sun 15/11
9:10 a.m.-8:00 a.m.
1 stop17h 50m
Lisbon Humberto Delgado
Sun 22/11
11:15 a.m.-1:59 p.m.
Nonstop7h 44m
C$ 924
BostonLisbon
BOS Boston Logan Intl - LIS Lisbon Humberto Delgado
BOSLIS
Boston Logan Intl
Sun 15/11
3:41 p.m.-8:10 a.m.
1 stop11h 29m
Lisbon Humberto Delgado
Sun 22/11
10:40 a.m.-9:58 a.m.
1 stop28h 18m
C$ 930
BostonLisbon
BOS Boston Logan Intl - LIS Lisbon Humberto Delgado
BOSLIS
Boston Logan Intl
Fri 13/11
3:41 p.m.-8:10 a.m.
1 stop11h 29m
Lisbon Humberto Delgado
Sun 22/11
10:40 a.m.-9:28 p.m.
1 stop15h 48m
C$ 930
Quickest round-trip
BostonLisbon
BOS Boston Logan Intl - LIS Lisbon Humberto Delgado
BOSLIS
Boston Logan Intl
Fri 13/11
5:00 p.m.-8:00 a.m.
1 stop10h 00m
Lisbon Humberto Delgado
Sat 21/11
10:00 a.m.-6:55 p.m.
1 stop13h 55m
C$ 933
BostonLisbon
BOS Boston Logan Intl - LIS Lisbon Humberto Delgado
BOSLIS
Boston Logan Intl
Sat 14/11
2:40 p.m.-8:10 a.m.
2 stops12h 30m
Lisbon Humberto Delgado
Sat 21/11
12:20 p.m.-6:57 p.m.
1 stop11h 37m
C$ 933
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$ 956
BostonLisbon
BOS Boston Logan Intl - LIS Lisbon Humberto Delgado
BOSLIS
Boston Logan Intl
Tue 15/12
9:10 a.m.-8:00 a.m.
1 stop17h 50m
Lisbon Humberto Delgado
Thu 24/12
10:00 a.m.-10:26 p.m.
1 stop17h 26m
C$ 972
BostonLisbon
BOS Boston Logan Intl - LIS Lisbon Humberto Delgado
BOSLIS
Boston Logan Intl
Tue 15/12
6:00 a.m.-8:00 a.m.
1 stop21h 00m
Lisbon Humberto Delgado
Sun 20/12
10:00 a.m.-10:26 p.m.
1 stop17h 26m
C$ 972
BostonLisbon
BOS Boston Logan Intl - LIS Lisbon Humberto Delgado
BOSLIS
Boston Logan Intl
Thu 19/11
9:30 a.m.-9:20 a.m.
2 stops18h 50m
Lisbon Humberto Delgado
Sun 29/11
3:35 p.m.-8:20 p.m.
1 stop33h 45m
C$ 980
Cheapest one-way
BostonLisbon
BOS Boston Logan Intl - LIS Lisbon Humberto Delgado
BOSLIS
Boston Logan Intl
Sun 27/9
11:35 p.m.-8:30 a.m.
1 stop27h 55m
C$ 489
Flights are sorted by cheapest round-trip flights first.
Deals found on 14/8
Showing 1-10 of 19 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 round-trip 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 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$ 895). Flying from Boston to Lisbon in June is currently the most expensive (average of C$ 1,517). 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 19 August 2026.
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$ 1,070 and C$ 1,478 in January.The cheapest round-trip price found within the last 5 days was C$ 893 on Icelandair (9 Jan-19 Jan).
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 19 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 has 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?
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$ 922, LEVEL can have you in Lisbon from Boston in 6h 20m. The distance from Boston to Lisbon is about 5121 km. This flight may include one or multiple stops.
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%).
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$ 895). Flying from Boston to Lisbon in June is currently the most expensive (average of C$ 1,517). 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 19 August 2026.
Find the best flight deals on Cheapflights, where travelers 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?
Cheapflights makes it easy to find Boston to Lisbon flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
Why should you use Cheapflights to find cheap flight tickets from Boston to Lisbon?
Cheapflights helps you find that perfect flight to Lisbon from Boston by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!
Can Cheapflights find flights from Boston to Lisbon with no change fees?
Certainly. Search results for flights to Lisbon from Boston shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.
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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