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Cheap flights from Boston to Porto from £300

BOS — OPO
7 Oct — 14 Oct1
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 8/1212:00 -
1 stop16h 30m
Mon 14/1219:20 -
1 stop30h 00m
Deal found 2/9£480
Tue 20/1010:40 -
1 stop15h 20m
Wed 18/1112:35 -
1 stop25h 42m
Deal found 2/9£484
Sat 17/1020:25 -
1 stop32h 20m
Wed 18/1112:35 -
1 stop32h 15m
Deal found 4/9£485
Mon 19/1009:51 -
2 stops15h 59m
Thu 19/1112:35 -
1 stop24h 08m
Deal found 2/9£487
Mon 19/1017:05 -
1 stop12h 25m
Tue 17/1105:00 -
1 stop14h 13m
Deal found 2/9£488
Tue 20/1015:35 -
1 stop10h 25m
Wed 11/1106:00 -
1 stop12h 45m
Deal found 4/9£489
Mon 19/1009:51 -
2 stops15h 59m
Thu 12/1106:00 -
1 stop12h 45m
Deal found 4/9£493
Sat 17/1020:25 -
1 stop32h 20m
Tue 17/1106:00 -
1 stop12h 45m
Deal found 2/9£494
Sun 18/1017:06 -
1 stop12h 19m
Wed 18/1111:15 -
2 stops16h 40m
Deal found 4/9£496
Wed 14/1017:10 -
1 stop17h 15m
Mon 16/1111:15 -
1 stop31h 58m
Deal found 5/9£499

Find flight deals from Boston to Porto

Round-trip from

£476

One-way from

£256

Popular in

July

Cheapest in

February

Average price

£548
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 16/2-22/2
  • 2 total stops
  • 32h 25m total
  • Boston to Porto
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Lufthansa
  • Lufthansa
  • 3/1-31/12
  • 1 total stop
  • 11h 10m total
  • Boston to Porto
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£103 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 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.

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Route

Depart

Return

Price

Cheapest return flight

BostonPorto

BOS Boston Logan Intl - OPO Porto

BOSOPO

Boston Logan Intl

Tue 3/11

22:45-10:30

Nonstop6h 45m

Porto

Wed 31/12

00:00-18:00

Nonstop0h 00m

£348

BostonPorto

BOS Boston Logan Intl - OPO Porto

BOSOPO

Boston Logan Intl

Sun 4/10

05:45-09:45

2 stops23h 00m

Porto

Wed 31/12

00:00-18:00

Nonstop0h 00m

£365

BostonPorto

BOS Boston Logan Intl - OPO Porto

BOSOPO

Boston Logan Intl

Sun 18/10

09:51-09:45

1 stop18h 54m

Porto

Thu 19/11

12:35-21:59

1 stop14h 24m

£485

BostonPorto

BOS Boston Logan Intl - OPO Porto

BOSOPO

Boston Logan Intl

Thu 1/10

22:00-15:45

1 stop12h 45m

Porto

Wed 31/12

00:00-18:00

Nonstop0h 00m

£492

BostonPorto

BOS Boston Logan Intl - OPO Porto

BOSOPO

Boston Logan Intl

Sat 12/9

17:05-15:15

2 stops17h 10m

Porto

Wed 31/12

00:00-18:00

Nonstop0h 00m

£499

BostonPorto

BOS Boston Logan Intl - OPO Porto

BOSOPO

Boston Logan Intl

Wed 18/11

17:30-11:45

2 stops13h 15m

Porto

Mon 23/11

20:40-23:47

2 stops32h 07m

£519

BostonPorto

BOS Boston Logan Intl - OPO Porto

BOSOPO

Boston Logan Intl

Thu 15/10

17:05-10:30

1 stop12h 25m

Porto

Tue 24/11

05:00-14:13

1 stop14h 13m

£525

BostonPorto

BOS Boston Logan Intl - OPO Porto

BOSOPO

Boston Logan Intl

Sun 18/10

05:45-09:45

2 stops23h 00m

Porto

Sat 21/11

12:35-23:59

2 stops16h 24m

£525

BostonPorto

BOS Boston Logan Intl - OPO Porto

BOSOPO

Boston Logan Intl

Wed 25/11

19:05-09:30

1 stop9h 25m

Porto

Tue 1/12

12:35-18:38

1 stop11h 03m

£530

BostonPorto

BOS Boston Logan Intl - OPO Porto

BOSOPO

Boston Logan Intl

Wed 4/11

17:05-08:15

1 stop10h 10m

Porto

Mon 9/11

11:15-22:55

2 stops16h 40m

£533

Flights are sorted by cheapest return flights first.

Deals found on 3/9

Showing 1-10 of 21 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 return 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?

The price you pay for your flight from Boston to Porto may vary depending on when you book. For the best chance of a lower fare, look to book 35 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 Porto?

Currently, February is the cheapest month in which you can book a flight from Boston to Porto (average of £301). Flying from Boston to Porto in July is currently the most expensive (average of £691). 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?

When flying from Boston to Porto, 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 Porto?

Airfare is below average for this route at the moment.

Boston to Porto flights typically cost between £492 and £640 in February.
The cheapest return price found within the last 5 days was £476 on TAP AIR PORTUGAL (16 Feb–22 Feb).

Related info for your journey

  • How popular is this Boston to Porto flight route?

    This flight path from Boston Logan Intl to Porto was viewed by 1 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 Porto?

    Airlines like United Airlines and Delta fly from Boston to Porto in about 10h 10m. The time it takes to get you to your destination can typically vary by up to 5h 49m. The distance from Boston to Porto is about 3134 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • 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 holiday 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 £301). Flying from Boston to Porto in July is currently the most expensive (average of £691). 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

Travelling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Guimarães
Santa Maria da Feira
Chaves
Coimbra
Viseu
Aveiro
Vila Nova de Gaia

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Boston to Porto

Boston to Lisbon flights

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How does Cheapflights help users find flights from Boston to Porto?

Cheapflights helps you search for flights from Boston to Porto via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Boston to Porto?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Boston to Porto for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Boston to Porto with no change fees?

Yes, we can. To see specific flights from Boston to Porto with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Boston to Porto become cheaper?

Yes, Cheapflights offers price alerts on Boston to Porto flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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