Cheap United flights from Boston to Porto (BOS to OPO)

Find The Best Day To Fly from Boston to Porto

Amazing United BOS to OPO Flight Deals

The cheapest flights to Dr. Francisco de Sa Carneiro found within the past 7 days were $430 round trip and one way. Prices and availability subject to change. Additional terms may apply.

Mon, Mar 30 - Thu, Apr 9
BOS
Boston
OPO
Porto
$430 Roundtrip, found 20 hours ago
$430
Roundtrip
found 20 hours ago
Select United flight, departing Mon, Mar 30 from Boston to Porto, returning Thu, Apr 9, priced at $430 found 20 hours ago

OPO From BOS Economy Coach Packages on Similar Airlines

Price found within the past 48 hours. Click for updated prices.
YOUROPO - Collection

YOUROPO - Collection

2 out of 5
Save 100% on your flight
Price was $1,171, price is now $675 per person
$675
per person
Dec 4 - Dec 10
found 11 hours ago
Roundtrip non-stop flight included
Boston (BOS) to Porto (OPO)
YOUROPO - Clérigos

YOUROPO - Clérigos

4 out of 5
Save 100% on your flight
Price was $1,181, price is now $699 per person
$699
per person
Dec 4 - Dec 10
found 11 hours ago
Roundtrip non-stop flight included
Boston (BOS) to Porto (OPO)
YOUROPO - Market

YOUROPO - Market

3 out of 5
Save 100% on your flight
Price was $1,620, price is now $970 per person
$970
per person
Nov 10 - Nov 16
found 1 day ago
Roundtrip non-stop flight included
Boston (BOS) to Porto (OPO)
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Frequently asked questions

Can I catch a flight from Logan Intl. Airport to OPO right now?
For any current OPO quarantine requirements and travel advice, go to the Covid-19 Travel Advisor. Check before you book your flight, so you don't get caught out.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to Dr. Francisco de Sa Carneiro Airport (OPO), please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It's possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Discover our best United flight from Boston BOS to Porto OPO 

To find the best deals on flights to Boston from Porto with United, just enter your travel dates, filter by United, and hit search. You’ll find flights to choose from and can sort by price, flight duration, and arrival or departure time.  

 

Return flights from Boston BOS to Porto OPO with United 

If you’re planning a round trip, booking return flights with United is usually the most cost-effective option. With airfares ranging from $430 to $430, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way United flights from Boston BOS to Porto OPO 

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way United flight from Boston to Porto costs from . Prices and availability subject to change. Additional terms may apply. 

 

The easy way to find cheap flights to Porto OPO from  Boston BOS with United 

To find a cheap United flight from Boston BOS to Porto OPO, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference. 

 

How to find our best airfare deals on United flights from Boston BOS to Porto OPO 

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as March, or if you book a flight with a stopover. 

 

Find nonstop flights from Boston BOS to Porto OPO with United 

If you’re keen to be on Porto soil fast, don’t waste time with a stopover—filter your search results to show direct United flights only. The journey takes around hour(s) min(s) – so you’ll be there before you know it. 

 

Flexible airline tickets for United flights from Boston BOS to Porto OPO 

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.  

 

There are a lot of reasons to book your flights to Porto OPO from  Boston BOS with United on Travelocity 

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

United Airports
Hop on a(n) United flight today by flying to many destinations out of these domestic and international airports:
Airport code
Country
Airport name
Number of flights
ORDUSAO'Hare Intl.227
DENUSADenver Intl.226
IAHUSAGeorge Bush Intercontinental136
IADUSAWashington Dulles Intl.100
SFOUSASan Francisco Intl.64
LAXUSALos Angeles Intl.23
EWRUSALiberty Intl.20
FRADEUFrankfurt Intl.19
NRTJPNNarita Intl.19
PEKCHNCapital Intl.16

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*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.