$293+ Cheap flights from Boston (BOS) to Porto (OPO)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — OPO
Oct 15 — Oct 221
Round-trip
1 adult, Economy
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Find cheap flights from Boston to Porto 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 Boston Logan Intl to Porto are usually found in February or January, booked 36 days in advance, depart on a Tuesday or Thursday and return on a Tuesday
Cheap flight deals from Boston to Porto
Cheapest
Best
Last-minute
One-way
Cheapest flights from Boston to PortoExplore the most affordable flight options available from Boston to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2026.
Explore the most affordable flight options available from Boston to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2026.
This Justfly.com deal was found by Cheapflights users on 9/15. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2210:20 pm -
1 stop11h 40m
Sun 11/14:00 pm -
1 stop32h 55m
Deal found 9/15![TAP AIR PORTUGAL logo]()
$629
This Delta deal was found by Cheapflights users on 9/15. 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 10/137:05 pm -
1 stop15h 20m
Mon 10/1911:25 am -
1 stop34h 11m
Deal found 9/15![Delta logo]()
$630
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/1411:15 pm -
Nonstop6h 30m
Sat 10/245:40 pm -
Nonstop7h 40m
Deal found 9/15![TAP AIR PORTUGAL logo]()
$631
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2710:40 am -
2 stops21h 05m
Sun 11/86:00 am -
1 stop12h 45m
Deal found 9/14![United Airlines logo]()
$632
This FlightHub deal was found by Cheapflights users on 9/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/145:50 am -
1 stop20h 10m
Tue 10/2712:35 pm -
1 stop30h 10m
Deal found 9/15![Multiple Airlines logo]()
$633
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2410:45 pm -
Nonstop6h 45m
Tue 12/15:45 pm -
Nonstop7h 45m
Deal found 9/15![TAP AIR PORTUGAL logo]()
$634
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/2711:45 pm -
Nonstop6h 45m
Sun 11/15:45 pm -
Nonstop7h 45m
Deal found 9/15![TAP AIR PORTUGAL logo]()
$635
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1411:15 pm -
Nonstop6h 30m
Mon 10/195:50 pm -
Nonstop7h 30m
Deal found 9/15![TAP AIR PORTUGAL logo]()
$636
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:05 pm -
1 stop9h 25m
Wed 11/46:00 am -
1 stop12h 45m
Deal found 9/14![United Airlines logo]()
$637
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/149:51 am -
2 stops16h 09m
Thu 10/296:00 am -
2 stops19h 20m
Deal found 9/15![United Airlines logo]()
$638
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/178:31 pm -
2 stops32h 14m
Thu 10/296:00 am -
1 stop12h 45m
Deal found 9/15![United Airlines logo]()
$639
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/149:51 am -
2 stops16h 09m
Tue 10/2712:35 pm -
1 stop30h 10m
Deal found 9/15![United Airlines logo]()
$640
Best flights from Boston to PortoDiscover carefully curated flight deals from Boston to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2026.
Discover carefully curated flight deals from Boston to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2026.
This Vueling Global deal was found by Cheapflights users on 9/15. 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 Vueling Global is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/67:35 pm -
2 stops20h 40m
Mon 11/99:55 pm -
2 stops25h 05m
Deal found 9/15![Multiple Airlines logo]()
$639
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/309:12 am -
2 stops20h 18m
Fri 11/66:00 am -
1 stop12h 45m
Deal found 9/15![United Airlines logo]()
$642
This TAP AIR PORTUGAL deal was found by Cheapflights users on 9/15. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2711:45 pm -
Nonstop6h 45m
Wed 11/46:00 pm -
1 stop25h 30m
Deal found 9/15![TAP AIR PORTUGAL logo]()
$672
This Scandinavian Airlines deal was found by Cheapflights users on 9/10. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/145:30 pm -
1 stop12h 35m
Wed 2/1711:55 am -
1 stop32h 50m
Deal found 9/10![Scandinavian Airlines logo]()
$750
This Delta deal was found by Cheapflights users on 9/10. 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 10/28:25 pm -
1 stop14h 05m
Mon 10/1911:25 am -
1 stop30h 50m
Deal found 9/10![Delta logo]()
$806
This Vueling Global deal was found by Cheapflights users on 9/15. 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 Vueling Global is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:35 pm -
2 stops31h 35m
Sat 11/79:55 pm -
2 stops25h 05m
Deal found 9/15![Multiple Airlines logo]()
$646
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/316:00 am -
1 stop22h 30m
Wed 1/66:00 am -
1 stop12h 45m
Deal found 9/11![United Airlines logo]()
$679
This United Airlines deal was found by Cheapflights users on 9/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:00 am -
2 stops20h 10m
Wed 10/286:00 am -
2 stops21h 59m
Deal found 9/12![United Airlines logo]()
$680
This Delta deal was found by Cheapflights users on 9/10. 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.
Mon 2/156:20 pm -
1 stop22h 40m
Fri 2/195:55 am -
1 stop13h 25m
Deal found 9/10![Delta logo]()
$846
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/149:30 am -
2 stops16h 30m
Sun 10/186:00 am -
2 stops36h 50m
Deal found 9/11![United Airlines logo]()
$702
This United deal was found by Cheapflights users on 9/15. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/268:25 pm -
1 stop32h 20m
Sat 10/106:20 am -
1 stop16h 20m
Deal found 9/15![Multiple Airlines logo]()
$779
This Delta deal was found by Cheapflights users on 9/15. 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.
Mon 12/2111:25 pm -
1 stop17h 35m
Wed 1/611:15 am -
1 stop32h 08m
Deal found 9/15![Delta logo]()
$988
Last-minute flights from Boston to PortoDiscover last-minute flight deals from Boston to Porto. Data last updated September 15, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Porto. Data last updated September 15, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/511:15 pm -
Nonstop6h 40m
Sat 10/245:40 pm -
Nonstop7h 40m
Deal found 9/10![TAP AIR PORTUGAL logo]()
$634
This Delta deal was found by Cheapflights users on 9/15. 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 10/137:05 pm -
1 stop15h 20m
Mon 10/1911:25 am -
1 stop34h 11m
Deal found 9/15![Delta logo]()
$630
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/1411:15 pm -
Nonstop6h 30m
Sat 10/245:40 pm -
Nonstop7h 40m
Deal found 9/15![TAP AIR PORTUGAL logo]()
$631
This FlightHub deal was found by Cheapflights users on 9/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/145:50 am -
1 stop20h 10m
Tue 10/2712:35 pm -
1 stop30h 10m
Deal found 9/15![Multiple Airlines logo]()
$633
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1411:15 pm -
Nonstop6h 30m
Mon 10/195:50 pm -
Nonstop7h 30m
Deal found 9/15![TAP AIR PORTUGAL logo]()
$636
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/149:51 am -
2 stops16h 09m
Thu 10/296:00 am -
2 stops19h 20m
Deal found 9/15![United Airlines logo]()
$638
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/149:51 am -
2 stops16h 09m
Tue 10/2712:35 pm -
1 stop30h 10m
Deal found 9/15![United Airlines logo]()
$640
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/178:31 pm -
2 stops32h 14m
Thu 10/296:00 am -
1 stop12h 45m
Deal found 9/15![United Airlines logo]()
$639
This Justfly.com deal was found by Cheapflights users on 9/15. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2210:20 pm -
1 stop11h 40m
Sun 11/14:00 pm -
1 stop32h 55m
Deal found 9/15![TAP AIR PORTUGAL logo]()
$629
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2710:40 am -
2 stops21h 05m
Sat 11/76:00 am -
1 stop12h 45m
Deal found 9/14![United Airlines logo]()
$632
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/2711:45 pm -
Nonstop6h 45m
Sun 11/15:45 pm -
Nonstop7h 45m
Deal found 9/15![TAP AIR PORTUGAL logo]()
$635
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:05 pm -
1 stop9h 25m
Wed 11/46:00 am -
1 stop12h 45m
Deal found 9/14![United Airlines logo]()
$637
One-way flights from Boston to PortoSearch for one-way flight options from Boston to Porto. Find affordable one-way fares based on user searches. Data last updated September 15, 2026.
Search for one-way flight options from Boston to Porto. Find affordable one-way fares based on user searches. Data last updated September 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
Sun 11/157:50 pm -
3 stops35h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Multiple Airlines logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
Sun 10/410:05 am -
3 stops43h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Multiple Airlines logo]()
$304
This Kiwi.com deal was found by Cheapflights users on 9/12. 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 11/37:50 pm -
2 stops21h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Multiple Airlines logo]()
$309
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/1211:00 pm -
2 stops31h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Multiple Airlines logo]()
$315
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 12/97:50 pm -
2 stops31h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Multiple Airlines logo]()
$316
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/278:50 pm -
2 stops31h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Multiple Airlines logo]()
$317
This Kiwi.com deal was found by Cheapflights users on 9/12. 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 11/237:50 pm -
2 stops37h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Multiple Airlines logo]()
$319
This KAYAK deal was found by Cheapflights users on 9/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/69:25 pm -
1 stop9h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Azores Airlines logo]()
$321
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Sun 9/278:50 pm -
2 stops29h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Multiple Airlines logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 9/12. 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 10/67:30 pm -
3 stops21h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Multiple Airlines logo]()
$323
Find flight deals from Boston to Porto
Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Porto (OPO). 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 September 15, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $629 (United Airlines) |
One-way from | $293 (Kiwi.com) |
Popular in | July |
Cheapest in | February |
Average price | $751 |
Good round-trip deal | $671 or less |
Good one-way deal | $430 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Boston to Porto 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 September 15, 2026.
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
Cheapest round-trip
BostonPorto
BOS Boston Logan Intl - OPO Porto
BOSOPO
Boston Logan Intl
Sun 10/18
9:15 pm-11:40 am
1 stop9h 25m
Porto
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$398
BostonPorto
BOS Boston Logan Intl - OPO Porto
BOSOPO
Boston Logan Intl
Tue 9/22
9:15 pm-2:45 pm
2 stops12h 30m
Porto
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$436
BostonPorto
BOS Boston Logan Intl - OPO Porto
BOSOPO
Boston Logan Intl
Sat 10/3
9:15 pm-2:45 pm
2 stops12h 30m
Porto
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$436
BostonPorto
BOS Boston Logan Intl - OPO Porto
BOSOPO
Boston Logan Intl
Mon 10/12
5:50 am-7:00 am
1 stop20h 10m
Porto
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$492
BostonPorto
BOS Boston Logan Intl - OPO Porto
BOSOPO
Boston Logan Intl
Tue 2/16
10:45 pm-10:30 am
Nonstop6h 45m
Porto
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$507
BostonPorto
BOS Boston Logan Intl - OPO Porto
BOSOPO
Boston Logan Intl
Wed 9/30
10:36 am-9:45 am
2 stops18h 09m
Porto
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$564
BostonPorto
BOS Boston Logan Intl - OPO Porto
BOSOPO
Boston Logan Intl
Sat 9/26
11:15 pm-10:55 am
Nonstop6h 40m
Porto
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$566
BostonPorto
BOS Boston Logan Intl - OPO Porto
BOSOPO
Boston Logan Intl
Sun 10/4
5:45 am-9:45 am
2 stops23h 00m
Porto
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$570
BostonPorto
BOS Boston Logan Intl - OPO Porto
BOSOPO
Boston Logan Intl
Tue 12/22
5:45 am-9:30 am
2 stops46h 45m
Porto
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$606
BostonPorto
BOS Boston Logan Intl - OPO Porto
BOSOPO
Boston Logan Intl
Fri 11/6
7:35 pm-9:15 pm
2 stops20h 40m
Porto
Mon 11/9
9:55 pm-6:00 pm
2 stops25h 05m
$639
Showing 1-10 of 24 resultsSorted by cheapest first
Compare providers for flights from Boston to Porto
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 Boston to Porto in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Boston-Porto flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Boston-Porto flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Boston-Porto flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boston-Porto flights, Cheapflights users trust Ovago the most. Ovago 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 Boston-Porto 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 Boston to Porto
Have a flexible travel schedule? Discover the best time to fly to Porto from Boston with our price prediction graph.
BOS-OPO
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 Porto
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How far ahead should I book a flight from Boston to Porto?
To ensure you get the cheapest price possible for a flight from Boston to Porto, you should look to book at least 35 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
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 $407). Flying from Boston to Porto in July is currently the most expensive (average of $934). 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?
Find hourly flight availability from Boston to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2026.
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 often are flights from Boston to Porto delayed?
About 8% of weekly flights between Boston and Porto have experienced delays in the past year, with the average delay time being 155 minutes.
What is the most punctual flight time for Boston to Porto flights?
Historically, flights departing at night are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Thursday tends to have the lowest number of delays on this route, whereas Sunday 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 Porto flights?
Over the last year, TAP AIR PORTUGAL have had the lowest number of delays on this route, with just 8% of flights being delayed.
What’s the top layover airport for flights from Boston to Porto?
Share of 1-stop round-trip flights from Boston to Porto chosen by Cheapflights users in the past 12 months, using the same layover each way.
Zurich (ZRH) – chosen by Cheapflights users on 25% of 1-stop itineraries from Boston to Porto on Cheapflights.
What’s the cheapest layover airport for flights from Boston to Porto?
Average round-trip fare for 1-stop flights from Boston to Porto, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Zurich (ZRH) is the most affordable 1-stop option, with an average round-trip price of $439.
What’s the fastest layover option from Boston to Porto?
Shortest average travel time for 1-stop one-way flights from Boston to Porto, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Montreal (YUL) have the shortest average one-way travel time for 1-stop routes: 10h 20m.
Which airport typically offers the quickest layover for flights from Boston to Porto?
Average layover duration for 1-stop one-way flights from Boston to Porto, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Montreal (YUL) offer the fastest connection on this route, with an average layover time of 2h 07m.
Reviews of airlines servicing Porto
Get insights into the airlines that provide service to Porto. 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 Porto. Reviews last updated September 15, 2026.
Read through reviews of airlines operating flights from Boston to Porto, such as United Airlines,TAP AIR PORTUGAL, andAzores Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.7
Entertainment
7.1
Crew
8.1
Comfort
7.3
Food
6.7
Overall
7.4
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Boarding
7.7
Entertainment
7.1
Crew
8.1
Comfort
7.3
Food
6.7
Overall
7.4
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Boarding
7.7
Entertainment
7.1
Crew
8.1
Comfort
7.3
Food
6.7
Overall
7.4
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Boarding
7.7
Entertainment
7.1
Crew
8.1
Comfort
7.3
Food
6.7
Overall
7.4
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Boarding
7.7
Entertainment
7.1
Crew
8.1
Comfort
7.3
Food
6.7
Overall
7.4
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Boarding
7.7
Entertainment
7.1
Crew
8.1
Comfort
7.3
Food
6.7
Overall
7.4
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Related info for your journey
Find useful and relevant information for your journey from Boston to Porto. 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 Porto?
Book flights to Porto if you plan to visit one of these locationsVila Nova de Gaia
Arcos de Valdevez
Coimbra
Aveiro
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Top 10 airlines flying from Boston to Porto
Discover the top 10 airlines that operate flights from Boston to Porto. 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 7,457,451 searches. Data last updated September 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$360 | Average$589 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$361 | Average$813 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$370 | Average$674 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$375 | Average$846 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$376 | Average$649 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$384 | Average$669 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$394 | Average$733 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$394 | Average$795 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$407 | Average$783 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$434 | Average$771 | FlexibilityNo cancel fee | On-time67% |