$495+ Cheap flights from Lisbon (LIS) to Boston (BOS)
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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — BOS
Sep 8 — Sep 151
Round-trip
1 adult, Economy
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Find cheap flights from Lisbon to Boston with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Lisbon Humberto Delgado to Boston Logan Intl are usually found in March or October, booked 68 days in advance, depart on a Thursday or Friday and return on a Tuesday
Cheap flight deals from Lisbon to Boston
Cheapest
Best
Last-minute
One-way
Cheapest flights from Lisbon to BostonExplore the most affordable flight options available from Lisbon to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 9, 2026.
Explore the most affordable flight options available from Lisbon to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 9, 2026.
This Finnair deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/216:30 am -
2 stops22h 17m
Sat 11/286:45 pm -
1 stop15h 05m
Deal found 8/6![Multiple Airlines logo]()
$502
This Finnair deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/228:45 pm -
1 stop24h 25m
Wed 9/309:50 pm -
1 stop15h 05m
Deal found 8/5![Multiple Airlines logo]()
$503
This Expedia deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/511:05 am -
1 stop11h 51m
Tue 11/179:30 pm -
1 stop15h 10m
Deal found 8/5![British Airways logo]()
$505
This American Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:35 am -
1 stop14h 35m
Mon 9/218:05 pm -
1 stop22h 05m
Deal found 8/4![American Airlines logo]()
$506
This American Airlines deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:25 am -
1 stop16h 25m
Wed 9/239:50 pm -
1 stop20h 25m
Deal found 8/7![American Airlines logo]()
$507
This American Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/168:55 am -
1 stop15h 35m
Fri 9/255:28 pm -
2 stops19h 32m
Deal found 8/4![American Airlines logo]()
$508
This SmartFares deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1712:00 pm -
Nonstop7h 45m
Wed 9/2310:45 pm -
Nonstop6h 35m
Deal found 8/5![TAP AIR PORTUGAL logo]()
$509
This SmartFares deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:40 pm -
Nonstop7h 40m
Thu 9/246:05 pm -
Nonstop6h 35m
Deal found 8/4![TAP AIR PORTUGAL logo]()
$510
This American Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/58:20 am -
2 stops18h 17m
Mon 11/96:35 pm -
1 stop12h 30m
Deal found 8/4![American Airlines logo]()
$511
This American Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:35 am -
2 stops19h 01m
Wed 9/239:50 pm -
1 stop20h 25m
Deal found 8/4![American Airlines logo]()
$512
Best flights from Lisbon to BostonDiscover carefully curated flight deals from Lisbon to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 9, 2026.
Discover carefully curated flight deals from Lisbon to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 9, 2026.
This Finnair deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/216:30 am -
2 stops22h 17m
Sat 11/287:15 pm -
1 stop11h 55m
Deal found 8/7![Multiple Airlines logo]()
$503
This British Airways deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/173:00 pm -
1 stop12h 35m
Thu 9/249:50 pm -
1 stop31h 15m
Deal found 8/8![British Airways logo]()
$527
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/245:00 am -
1 stop14h 13m
Wed 12/304:55 pm -
1 stop13h 25m
Deal found 8/4![Delta logo]()
$533
This British Airways deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2610:35 am -
1 stop16h 15m
Sun 11/15:30 pm -
1 stop10h 35m
Deal found 8/7![British Airways logo]()
$533
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/45:00 am -
1 stop13h 19m
Fri 9/115:10 pm -
1 stop10h 40m
Deal found 8/4![Delta logo]()
$533
This British Airways deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/177:20 am -
1 stop20h 15m
Thu 9/241:02 pm -
2 stops13h 43m
Deal found 8/8![Multiple Airlines logo]()
$548
This Delta deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1111:55 am -
1 stop11h 35m
Tue 9/225:10 pm -
1 stop10h 40m
Deal found 8/8![Delta logo]()
$534
This Delta deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:00 am -
1 stop13h 19m
Thu 9/2411:25 pm -
Nonstop6h 20m
Deal found 8/9![Delta logo]()
$538
This Delta deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1712:45 pm -
Nonstop7h 35m
Wed 9/235:10 pm -
1 stop10h 40m
Deal found 8/6![Delta logo]()
$552
Last-minute flights from Lisbon to BostonDiscover last-minute flight deals from Lisbon to Boston. Data last updated August 9, 2026 and is based on user searches.
Discover last-minute flight deals from Lisbon to Boston. Data last updated August 9, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:35 am -
2 stops19h 25m
Tue 9/227:25 am -
1 stop10h 45m
Deal found 8/4![American Airlines logo]()
$523
This American Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/168:55 am -
1 stop15h 35m
Fri 9/255:28 pm -
2 stops19h 32m
Deal found 8/4![American Airlines logo]()
$508
This American Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:35 am -
2 stops19h 01m
Wed 9/239:50 pm -
1 stop20h 25m
Deal found 8/4![American Airlines logo]()
$512
This British Airways deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1611:05 am -
1 stop15h 44m
Sat 9/265:28 pm -
2 stops17h 52m
Deal found 8/4![British Airways logo]()
$518
This British Airways deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1611:05 am -
1 stop15h 44m
Thu 9/243:15 pm -
2 stops26h 50m
Deal found 8/4![British Airways logo]()
$520
This American Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:35 am -
1 stop14h 35m
Mon 9/218:05 pm -
1 stop22h 05m
Deal found 8/4![American Airlines logo]()
$506
This American Airlines deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:25 am -
1 stop16h 25m
Wed 9/239:50 pm -
1 stop20h 25m
Deal found 8/7![American Airlines logo]()
$507
This SmartFares deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1712:00 pm -
Nonstop7h 45m
Wed 9/2310:45 pm -
Nonstop6h 35m
Deal found 8/5![TAP AIR PORTUGAL logo]()
$509
This SmartFares deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:40 pm -
Nonstop7h 40m
Thu 9/246:05 pm -
Nonstop6h 35m
Deal found 8/4![TAP AIR PORTUGAL logo]()
$510
This Finnair deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/228:45 pm -
1 stop24h 25m
Wed 9/309:50 pm -
1 stop15h 05m
Deal found 8/5![Multiple Airlines logo]()
$503
One-way flights from Lisbon to BostonSearch for one-way flight options from Lisbon to Boston. Find affordable one-way fares based on user searches. Data last updated August 9, 2026.
Search for one-way flight options from Lisbon to Boston. Find affordable one-way fares based on user searches. Data last updated August 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:20 pm -
3 stops41h 49m
Deal found 8/4![Multiple Airlines logo]()
$495
This Iberia deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/48:45 pm -
1 stop28h 00m
Deal found 8/4![Iberia logo]()
$497
This Kiwi.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/93:00 pm -
3 stops32h 35m
Deal found 8/7![Multiple Airlines logo]()
$498
This Kiwi.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/911:35 am -
1 stop26h 30m
Deal found 8/7![Multiple Airlines logo]()
$499
This Mytrip deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:15 am -
1 stop17h 40m
Deal found 8/6![Air Transat logo]()
$500
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/185:30 pm -
2 stops31h 50m
Deal found 8/4![Multiple Airlines logo]()
$502
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1410:00 pm -
3 stops26h 55m
Deal found 8/4![Multiple Airlines logo]()
$503
This Kiwi.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/29:10 pm -
3 stops40h 59m
Deal found 8/7![Multiple Airlines logo]()
$504
This Iberia deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:35 am -
2 stops18h 30m
Deal found 8/4![Iberia logo]()
$505
This Mytrip deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1710:40 am -
1 stop12h 55m
Deal found 8/7![Multiple Airlines logo]()
$507
Find flight deals from Lisbon to Boston
Discover tips and strategies to find the most affordable flight options for your journey from Lisbon (LIS) to Boston (BOS). 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 August 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $502 (Finnair) |
One-way from | $495 (Kiwi.com) |
Popular in | July |
Cheapest in | March |
Average price | $868 |
Good round-trip deal | $513 or less |
Good one-way deal | $624 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Lisbon to Boston 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 2,558,603 searches. Data last updated August 9, 2026.
Use the filters below to find and compare flights from Lisbon to Boston that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
LisbonBoston
LIS Lisbon Humberto Delgado - BOS Boston Logan Intl
LISBOS
Lisbon Humberto Delgado
Sat 11/21
6:30 am-11:47 pm
2 stops22h 17m
Boston Logan Intl
Sat 11/28
7:15 pm-12:10 pm
1 stop11h 55m
$503
LisbonBoston
LIS Lisbon Humberto Delgado - BOS Boston Logan Intl
LISBOS
Lisbon Humberto Delgado
Thu 9/17
3:00 pm-10:35 pm
1 stop12h 35m
Boston Logan Intl
Thu 9/24
9:50 pm-10:05 am
1 stop31h 15m
$527
LisbonBoston
LIS Lisbon Humberto Delgado - BOS Boston Logan Intl
LISBOS
Lisbon Humberto Delgado
Tue 11/24
5:00 am-2:13 pm
1 stop14h 13m
Boston Logan Intl
Wed 12/30
4:55 pm-11:20 am
1 stop13h 25m
$533
LisbonBoston
LIS Lisbon Humberto Delgado - BOS Boston Logan Intl
LISBOS
Lisbon Humberto Delgado
Mon 10/26
10:35 am-10:50 pm
1 stop16h 15m
Boston Logan Intl
Sun 11/1
5:30 pm-9:05 am
1 stop10h 35m
$533
LisbonBoston
LIS Lisbon Humberto Delgado - BOS Boston Logan Intl
LISBOS
Lisbon Humberto Delgado
Fri 9/4
5:00 am-1:19 pm
1 stop13h 19m
Boston Logan Intl
Fri 9/11
5:10 pm-8:50 am
1 stop10h 40m
$533
LisbonBoston
LIS Lisbon Humberto Delgado - BOS Boston Logan Intl
LISBOS
Lisbon Humberto Delgado
Fri 9/11
11:55 am-6:30 pm
1 stop11h 35m
Boston Logan Intl
Tue 9/22
5:10 pm-8:50 am
1 stop10h 40m
$534
LisbonBoston
LIS Lisbon Humberto Delgado - BOS Boston Logan Intl
LISBOS
Lisbon Humberto Delgado
Thu 9/17
5:00 am-1:19 pm
1 stop13h 19m
Boston Logan Intl
Thu 9/24
11:25 pm-10:45 am
Nonstop6h 20m
$538
LisbonBoston
LIS Lisbon Humberto Delgado - BOS Boston Logan Intl
LISBOS
Lisbon Humberto Delgado
Thu 9/17
7:20 am-10:35 pm
1 stop20h 15m
Boston Logan Intl
Thu 9/24
1:02 pm-7:45 am
2 stops13h 43m
$548
Quickest round-trip
LisbonBoston
LIS Lisbon Humberto Delgado - BOS Boston Logan Intl
LISBOS
Lisbon Humberto Delgado
Thu 9/17
12:45 pm-3:20 pm
Nonstop7h 35m
Boston Logan Intl
Wed 9/23
5:10 pm-8:50 am
1 stop10h 40m
$552
Cheapest one-way
Quickest one-way
LisbonBoston
LIS Lisbon Humberto Delgado - BOS Boston Logan Intl
LISBOS
Lisbon Humberto Delgado
Thu 9/3
5:45 pm-8:20 pm
Nonstop7h 35m
$577
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from Lisbon to Boston
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Lisbon to Boston in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Lisbon-Boston flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Lisbon-Boston flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Lisbon-Boston flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Lisbon-Boston flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Lisbon-Boston flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Lisbon to Boston
Have a flexible travel schedule? Discover the best time to fly to Boston from Lisbon with our price prediction graph.
LIS-BOS
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 Lisbon to Boston
Prices
Airlines
Delays
How far ahead should I book a flight from Lisbon to Boston?
The best time to book flights from Lisbon to Boston is 67 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 Lisbon to Boston?
Currently, March is the cheapest month in which you can book a flight from Lisbon to Boston (average of $609). Flying from Lisbon to Boston in July is currently the most expensive (average of $930). 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 LIS to BOS?
Find hourly flight availability from Lisbon to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 9, 2026.
When flying from Lisbon to Boston, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
How often are flights from Lisbon to Boston delayed?
About 22% of weekly flights between Lisbon and Boston have experienced delays in the past year, with the average delay time being 127 minutes.
What is the most punctual flight time for Lisbon to Boston flights?
Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Monday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Lisbon to Boston flights?
Over the last year, Delta have had the lowest number of delays on this route, with just 17% of flights being delayed.
The best insider tips for Lisbon to Boston flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Lisbon to Boston trip
Our travel experts
Reviews of airlines servicing Boston
Get insights into the airlines that provide service to Boston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Boston. Reviews last updated August 9, 2026.
Read reviews from past customers who have flown KLM,Delta, andAir France from Lisbon to Boston. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.8
Comfort
7.7
Overall
7.8
Food
7.3
Entertainment
7.2
Crew
8.4
Reviews
1 / 20
4.0
OkaySubhash,Jul 2026
CDG - ATL
Boarding
7.8
Comfort
7.7
Overall
7.8
Food
7.3
Entertainment
7.2
Crew
8.4
Reviews
1 / 20
4.0
OkaySubhash,Jul 2026
CDG - ATL
Boarding
7.8
Comfort
7.7
Overall
7.8
Food
7.3
Entertainment
7.2
Crew
8.4
Reviews
1 / 20
4.0
OkaySubhash,Jul 2026
CDG - ATL
Boarding
7.8
Comfort
7.7
Overall
7.8
Food
7.3
Entertainment
7.2
Crew
8.4
Reviews
1 / 20
4.0
OkaySubhash,Jul 2026
CDG - ATL
Boarding
7.8
Comfort
7.7
Overall
7.8
Food
7.3
Entertainment
7.2
Crew
8.4
Reviews
1 / 20
4.0
OkaySubhash,Jul 2026
CDG - ATL
Boarding
7.8
Comfort
7.7
Overall
7.8
Food
7.3
Entertainment
7.2
Crew
8.4
Reviews
1 / 20
4.0
OkaySubhash,Jul 2026
CDG - ATL
Related info for your journey
Find useful and relevant information for your journey from Lisbon to Boston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Boston?
Book flights to Boston if you plan to visit one of these locationsWaltham
Randolph
Cambridge
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Cranston
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Warwick
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Chelsea
Londonderry
Swansea
Fitchburg
North Falmouth
Braintree
Revere
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Lisbon and Boston flights
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Top 5 airlines flying from Lisbon to Boston
Discover the top 5 airlines that operate flights from Lisbon to Boston. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$495 | Average$750 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$526 | Average$684 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$539 | Average$788 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$542 | Average$736 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$544 | Average$690 | FlexibilityNo cancel fee | On-time77% |