Cheap flights from Boston to Lisbon from $311

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Lisbon departing on 9/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Boston to Lisbon (BOS-LIS)

Cheap round-trip flights

Iberia Logo
4:34 pm - 11:25 pmBOS-LIS
25h 51m2 stops
Iberia Logo
6:35 am - 7:50 pmLIS-BOS
18h 15m1 stop
$505Iberia
Find Deal
Sat, Sep 27 - Fri, Oct 10
Iberia Logo
1:01 pm - 7:45 amBOS-LIS
13h 44m2 stops
Iberia Logo
12:30 pm - 8:50 pmLIS-BOS
12h 20m1 stop
$506Iberia
Find Deal
Thu, Oct 16 - Mon, Oct 27
Aer Lingus Logo
9:25 pm - 9:35 pmBOS-LIS
19h 10m1 stop
Aer Lingus Logo
11:25 am - 6:45 pmLIS-BOS
12h 20m1 stop
$507Aer Lingus
Find Deal
Sat, Sep 27 - Sat, Oct 11
Scandinavian Airlines Logo
5:35 pm - 2:55 pmBOS-LIS
16h 20m1 stop
Scandinavian Airlines Logo
8:05 am - 3:50 pmLIS-BOS
36h 45m2 stops
$508Scandinavian Airlines
Find Deal
Thu, Nov 6 - Thu, Nov 20
Air Canada Logo
5:30 am - 9:20 amBOS-LIS
23h 50m1 stop
Air Canada Logo
11:25 am - 9:27 pmLIS-BOS
15h 02m1 stop
$509Air Canada
Find Deal
Tue, Oct 28 - Thu, Apr 9
Iberia Logo
1:05 pm - 7:40 amBOS-LIS
13h 35m2 stops
Iberia Logo
6:30 am - 7:50 pmLIS-BOS
18h 20m1 stop
$510Iberia
Find Deal
Tue, Feb 24 - Sat, Mar 7
Air Canada Logo
6:15 am - 8:55 amBOS-LIS
22h 40m1 stop
Air Canada Logo
11:25 am - 7:12 pmLIS-BOS
12h 47m1 stop
$516Air Canada
Find Deal
Wed, Oct 29 - Wed, Apr 8
United Airlines Logo
10:10 am - 10:15 amBOS-LIS
20h 05m2 stops
United Airlines Logo
11:25 am - 7:12 pmLIS-BOS
12h 47m1 stop
$518United Airlines
Find Deal
Mon, Oct 27 - Wed, Apr 8
United Airlines Logo
4:23 pm - 8:20 amBOS-LIS
10h 57m1 stop
United Airlines Logo
11:55 am - 9:30 amLIS-BOS
25h 35m2 stops
$519United Airlines
Find Deal
Sun, Oct 12 - Wed, Oct 29
British Airways Logo
7:15 am - 10:05 amBOS-LIS
21h 50m1 stop
British Airways Logo
3:10 pm - 10:40 pmLIS-BOS
12h 30m1 stop
$545British Airways
Find Deal
Fri, Oct 10 - Wed, Oct 22

United Airlines flights from Boston to Lisbon

Our best United Airlines deals on Boston to Lisbon flight tickets
United Airlines
Oct 27
BOS10:10 amBoston Logan Intl
20h 05m
2 stops
LIS10:15 amLisbon Humberto Delgado
Apr 8
LIS11:25 amLisbon Humberto Delgado
12h 47m
1 stop
BOS7:12 pmBoston Logan Intl
United Airlines
Oct 12
BOS4:23 pmBoston Logan Intl
10h 57m
1 stop
LIS8:20 amLisbon Humberto Delgado
Oct 29
LIS11:55 amLisbon Humberto Delgado
25h 35m
2 stops
BOS9:30 amBoston Logan Intl
United Airlines
Sep 25
BOS6:00 amBoston Logan Intl
24h 05m
2 stops
LIS11:05 amLisbon Humberto Delgado
Oct 2
LIS7:30 amLisbon Humberto Delgado
13h 25m
1 stop
BOS3:55 pmBoston Logan Intl

TAP AIR PORTUGAL flights from Boston to Lisbon

Our best TAP AIR PORTUGAL deals on Boston to Lisbon flight tickets
TAP AIR PORTUGAL
Sep 2
BOS10:40 pmBoston Logan Intl
6h 30m
LIS10:10 amLisbon Humberto Delgado
Sep 10
LIS5:35 pmLisbon Humberto Delgado
7h 30m
BOS8:05 pmBoston Logan Intl
TAP AIR PORTUGAL
Sep 1
BOS11:15 pmBoston Logan Intl
18h 00m
1 stop
LIS10:15 pmLisbon Humberto Delgado
Sep 10
LIS11:45 amLisbon Humberto Delgado
7h 35m
BOS2:20 pmBoston Logan Intl
TAP AIR PORTUGAL
Sep 3
BOS11:05 pmBoston Logan Intl
12h 55m
1 stop
LIS5:00 pmLisbon Humberto Delgado
Sep 10
LIS11:45 amLisbon Humberto Delgado
7h 35m
BOS2:20 pmBoston Logan Intl

momondo Fare Finder

 
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, momondo users made 832,500 searches. Data last updated August 28, 2025.
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

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sat 9/27

4:34 pm-11:25 pm

2 stops25h 51m

Lisbon Humberto Delgado

Fri 10/10

6:35 am-7:50 pm

1 stop18h 15m

$505

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Thu 10/16

1:01 pm-7:45 am

2 stops13h 44m

Lisbon Humberto Delgado

Mon 10/27

12:30 pm-8:50 pm

1 stop12h 20m

$506

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sat 9/27

9:25 pm-9:35 pm

1 stop19h 10m

Lisbon Humberto Delgado

Sat 10/11

11:25 am-6:45 pm

1 stop12h 20m

$507

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Thu 11/6

5:35 pm-2:55 pm

1 stop16h 20m

Lisbon Humberto Delgado

Thu 11/20

8:05 am-3:50 pm

2 stops36h 45m

$508

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Tue 10/28

5:30 am-9:20 am

1 stop23h 50m

Lisbon Humberto Delgado

Thu 4/9

11:25 am-9:27 pm

1 stop15h 02m

$509

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Tue 2/24

1:05 pm-7:40 am

2 stops13h 35m

Lisbon Humberto Delgado

Sat 3/7

6:30 am-7:50 pm

1 stop18h 20m

$510

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Wed 10/29

6:15 am-8:55 am

1 stop22h 40m

Lisbon Humberto Delgado

Wed 4/8

11:25 am-7:12 pm

1 stop12h 47m

$516

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Mon 10/27

10:10 am-10:15 am

2 stops20h 05m

Lisbon Humberto Delgado

Wed 4/8

11:25 am-7:12 pm

1 stop12h 47m

$518

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sun 10/12

4:23 pm-8:20 am

1 stop10h 57m

Lisbon Humberto Delgado

Wed 10/29

11:55 am-9:30 am

2 stops25h 35m

$519

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Fri 10/10

7:15 am-10:05 am

1 stop21h 50m

Lisbon Humberto Delgado

Wed 10/22

3:10 pm-10:40 pm

1 stop12h 30m

$545

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Lisbon from

How to get the cheapest flight ticket from Boston to Lisbon

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Lisbon?

In general, January is the cheapest month to fly from Boston to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $649. If you are unable to visit Lisbon during the month of January, then departing from Boston during the month February is also very affordable. Most momondo users find prices during this month for around $650.

What is the cheapest day to depart on your flight to Lisbon?

Our data shows that Monday is the least expensive day to fly to Lisbon. Tickets to fly out on this day can be as low as $800. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Boston to Lisbon for around $872.

What is the cheapest time of day to depart on your flight to Lisbon?

The cheapest time of day to fly to Lisbon is at noon when flights can be purchased for as low as $351. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $831 on average. Flights to Lisbon from Boston in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Boston Logan Intl to Lisbon Humberto Delgado flight route?

Fly from Boston Logan Intl to Lisbon Humberto Delgado for the best Boston Logan Intl - Lisbon Humberto Delgado flight prices

How far in advance should I book a flight to Lisbon?

You are more likely to see cheaper flights to Lisbon from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Lisbon for around $795 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Lisbon from Boston for as low as $711 on momondo.

What cabin class options are available on Boston Logan Intl to Lisbon Humberto Delgado flights?

There are 3 cabin classes available to choose from on Boston Logan Intl to Lisbon Humberto Delgado flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Boston to Lisbon flight prices changed over time?

As of August 2025, prices for Boston to Lisbon flights are approximately 34% cheaper when compared to flights at the same time last year.

When to book flights from Boston to Lisbon

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Lisbon according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to Lisbon (BOS to LIS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Lisbon

Best Price Found

$266

Fastest flight time

6h 20m

Direct flights

Every day

Airports in Lisbon

1 airport
The best one-way flight to Lisbon from Boston in the past 72 hours is $266. The best round-trip flight deal from Boston to Lisbon found on momondo in the last 72 hours is $550.
The fastest flight from Boston to Lisbon takes 6h 20m
Direct flights go from Boston to Lisbon every day.
There is 1 airport near Lisbon: Lisbon Humberto Delgado (LIS)
  • How far is Boston Logan Intl to Lisbon Humberto Delgado by plane?

    Lisbon Humberto Delgado is 3186.3 mi away from Boston Logan Intl. Typically, this will take 9h 15m by plane in normal conditions.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Lisbon Humberto Delgado Airport?

    Prices for flights from Boston Logan Intl Airport to Lisbon Humberto Delgado Airport were last updated today.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to Lisbon Humberto Delgado Airport?

  • How old do you have to be to fly from Boston Logan Intl Airport to Lisbon Humberto Delgado Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to Lisbon Humberto Delgado Airport.

  • What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?

    The travel and health documents you'll need for your trip to Lisbon Humberto Delgado Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lisbon Humberto Delgado Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Boston to Lisbon?

  • What is the most popular airline from Boston to Lisbon?

Best airlines flying from Boston to Lisbon

Compare and see reviews for airlines that fly from Boston to Lisbon with momondo
Airline
Rating
Free Cancellation
Price
VuelingPriceFrom $165Free CancellationRating
7.1
1,181 reviews
Search Vueling flights
LEVELPriceFrom $227Free CancellationRating
4.0
4 reviews
Search LEVEL flights
Azores AirlinesPriceFrom $322Free CancellationRating
7.5
73 reviews
Search Azores Airlines flights
Scandinavian AirlinesPriceFrom $323Free CancellationRating
7.4
1,481 reviews
Search Scandinavian Airlines flights
PLAYPriceFrom $333Free CancellationRating
7.0
103 reviews
Search PLAY flights
IberiaPriceFrom $347Free CancellationRating
7.0
2,892 reviews
Search Iberia flights
IcelandairPriceFrom $386Free CancellationRating
7.0
534 reviews
Search Icelandair flights
American AirlinesPriceFrom $492Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SWISSPriceFrom $499Free CancellationRating
7.6
1,712 reviews
Search SWISS flights
LufthansaPriceFrom $503Free CancellationRating
6.8
7,368 reviews
Search Lufthansa flights
  • Emirates Flights From Boston to Lisbon

    Emirates is one of the most popular airlines flying from Boston to Lisbon, operating 4 flights/week on average for this route. A good Emirates flight deal for Boston to Lisbon starts from $637 round-trip, up to an average price of $831. Our users have rated Emirates at 8.1/10.

  • KLM Flights From Boston to Lisbon

    $622 is the best KLM flight deal from Boston to Lisbon found on momondo over the last 72 hours. The average KLM ticket price found was closer to $817, however, with flight time and availability significantly affecting the price. KLM (7.8/10 from 1,382 user reviews) flies into Lisbon from Boston 4 times in an average week so prices can vary.

Traveling to a place near Lisbon?

Book flights to Lisbon if you plan to visit one of these locations
Sintra
Fátima
Nazaré
Ericeira
Setúbal
Oeiras
Almada
Tomar
Peniche
Evora
Estoril
Sesimbra
Leiria
Figueira da Foz
Zambujeira do Mar
Torres Vedras
Batalha
Óbidos
Comporta
Costa da Caparica

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Lisbon?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Boston to Lisbon for you.

Can I find flights from Boston to Lisbon with flexible booking policies on momondo?

All flight searches from Boston to Lisbon on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Boston to Lisbon?

momondo helps you find the best flight between Boston and Lisbon by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Boston to Lisbon right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Lisbon, momondo offers a useful price alert feature which will track prices for flights to Lisbon from Boston and alert you when they change.

An easier way to manage your Lisbon trip

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1 adult
Tue 9/2
Tue 9/9

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