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Cheap flights from Boston to Porto from C$ 519

BOS — OPO
4 Nov — 11 Nov1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Boston to Porto

Enter your travel dates to find the best prices.

Cheapest flights from Boston to Porto

Tue 3/1111:55 a.m. -
2 stops16h 35m
Fri 13/1112:05 p.m. -
1 stop13h 15m
Deal found 1/10C$ 927
Tue 3/116:00 a.m. -
1 stop22h 30m
Thu 19/1112:35 p.m. -
1 stop14h 24m
Deal found 1/10C$ 933
Tue 8/129:50 p.m. -
1 stop32h 25m
Mon 21/127:20 p.m. -
1 stop30h 00m
Deal found 1/10C$ 939
Mon 2/115:30 a.m. -
2 stops23h 00m
Wed 18/1112:35 p.m. -
1 stop14h 24m
Deal found 1/10C$ 940
Mon 2/119:12 a.m. -
2 stops19h 18m
Tue 17/116:00 a.m. -
1 stop12h 45m
Deal found 1/10C$ 949
Sat 31/107:30 p.m. -
1 stop32h 45m
Tue 10/115:55 a.m. -
2 stops19h 30m
Deal found 1/10C$ 953
Sat 7/116:36 p.m. -
2 stops33h 54m
Thu 19/1112:35 p.m. -
1 stop14h 24m
Deal found 1/10C$ 955
Wed 4/114:55 p.m. -
1 stop12h 40m
Tue 10/115:00 a.m. -
1 stop14h 13m
Deal found 30/9C$ 959
Tue 8/125:45 a.m. -
2 stops22h 45m
Wed 16/127:20 p.m. -
1 stop30h 00m
Deal found 3/10C$ 962
Tue 17/113:41 p.m. -
1 stop12h 49m
Tue 24/1112:35 p.m. -
1 stop14h 24m
Deal found 5/10C$ 967
Mon 16/112:40 p.m. -
2 stops13h 50m
Tue 24/1112:35 p.m. -
2 stops26h 43m
Deal found 5/10C$ 973
Tue 17/119:00 a.m. -
1 stop19h 30m
Thu 26/1112:35 p.m. -
1 stop29h 56m
Deal found 5/10C$ 974

Find flight deals from Boston to Porto

Round-trip from

C$ 927

One-way from

C$ 519

Popular in

July

Cheapest in

February

Average price

C$ 1,061
SWISS
  • SWISS
  • 3/11-13/11
  • 3 total stops
  • 29h 50m total
  • Boston to Porto
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United Airlines
  • United Airlines
  • 28/2-31/12
  • 1 total stop
  • 20h 00m total
  • Boston to Porto
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Highest demand for flights based on searches. 19% potential increase in price (C$ 344 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 44 potential savings vs. average RT price).
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Average for round-trip flights in October 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Boston to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonPorto

BOS Boston Logan Intl - OPO Porto

BOSOPO

Boston Logan Intl

Sun 28/2

8:30 a.m.-9:30 a.m.

1 stop20h 00m

Porto

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 519

BostonPorto

BOS Boston Logan Intl - OPO Porto

BOSOPO

Boston Logan Intl

Wed 31/3

10:44 a.m.-9:45 a.m.

2 stops18h 01m

Porto

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 574
Quickest round-trip

BostonPorto

BOS Boston Logan Intl - OPO Porto

BOSOPO

Boston Logan Intl

Mon 29/3

10:30 p.m.-10:10 a.m.

Nonstop6h 40m

Porto

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 671

BostonPorto

BOS Boston Logan Intl - OPO Porto

BOSOPO

Boston Logan Intl

Thu 1/4

11:30 a.m.-6:30 p.m.

3 stops26h 00m

Porto

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 684

BostonPorto

BOS Boston Logan Intl - OPO Porto

BOSOPO

Boston Logan Intl

Tue 30/3

11:30 a.m.-7:55 a.m.

3 stops39h 25m

Porto

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 692

BostonPorto

BOS Boston Logan Intl - OPO Porto

BOSOPO

Boston Logan Intl

Tue 30/3

11:30 a.m.-3:30 p.m.

3 stops23h 00m

Porto

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 870

BostonPorto

BOS Boston Logan Intl - OPO Porto

BOSOPO

Boston Logan Intl

Sun 18/10

7:00 p.m.-9:45 a.m.

1 stop9h 45m

Porto

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 872

BostonPorto

BOS Boston Logan Intl - OPO Porto

BOSOPO

Boston Logan Intl

Sun 8/11

5:30 a.m.-9:30 a.m.

2 stops23h 00m

Porto

Thu 19/11

12:35 p.m.-9:59 p.m.

1 stop14h 24m

C$ 940

BostonPorto

BOS Boston Logan Intl - OPO Porto

BOSOPO

Boston Logan Intl

Sat 7/11

7:30 p.m.-8:15 a.m.

1 stop31h 45m

Porto

Tue 17/11

11:30 a.m.-10:55 p.m.

2 stops16h 25m

C$ 955

BostonPorto

BOS Boston Logan Intl - OPO Porto

BOSOPO

Boston Logan Intl

Wed 25/11

2:40 p.m.-9:30 a.m.

2 stops13h 50m

Porto

Tue 1/12

7:20 p.m.-8:20 p.m.

1 stop30h 00m

C$ 1,013

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/10

Showing 1-10 of 24 resultsSorted by cheapest first
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Best time to book a flight from Boston to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Boston with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Boston to Porto

How far ahead should I book a flight from Boston to Porto?

Booking 86 days in advance of your planned departure date is, on average, the best time to get cheap flights from Boston to Porto. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Boston to Porto?

Currently, February is the cheapest month in which you can book a flight from Boston to Porto (average of C$ 587). Flying from Boston to Porto in July is currently the most expensive (average of C$ 1,329). 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 OPO?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Boston to Porto as you normally would.

How much does it cost to fly round-trip from Boston to Porto?

Airfare is typical for this route at the moment.

Boston to Porto flights typically cost between C$ 861 and C$ 1,151 in November.
The cheapest round-trip price found within the last 5 days was C$ 927 on Multiple Airlines (3 Nov-13 Nov).

Related info for your journey

  • How popular is this Boston to Porto flight route?

    Within the past month, 2 users have taken a look at flights from Boston Logan Intl to Porto.

  • How long is the flight from Boston to Porto?

    Departing from Boston to Porto will take you 6h 45m. There are 5044 km between Boston and Porto. Both multi-stop and direct flights can be found to your destination and back.

  • Can I find deals for flights from Boston to Porto that include hotel bookings?

    Yes. In addition to deals on Boston to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Porto?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Porto.

  • Can I find deals for business class flights from Boston to Porto?

    Yes. Cheapflights offers flight deals from Boston to Porto 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 Porto?

    Currently, February is the cheapest month in which you can book a flight from Boston to Porto (average of C$ 587). Flying from Boston to Porto in July is currently the most expensive (average of C$ 1,329). 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

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Alternative routes for Boston to Porto

Boston to Lisbon flights

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Need flexible booking options for your flight to Porto from Boston? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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