BOI - OPO

Find cheap flights from Boise to Porto

1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Porto

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boise to Porto, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boise to Porto, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
Multiple Airlines
Mon 12/22
BOI - OPO • multi-stop
Cheapest one-way
Multiple Airlines
Mon 12/22
BOI - OPO • multi-stop
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We hope you love your trip to Porto!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boise to Porto (BOI-OPO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boise to Porto that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boise to Porto

Multiple Airlines Logo
BOI
-
OPO
5049 mimulti-stop
Multiple Airlines Logo
OPO
-
BOI
5049 mimulti-stop
Multiple Airlines
Booking Insights

KAYAK's insights & trends for Boise to Porto flights

Get data-powered insights and trends into flights from Boise to Porto to help you find the cheapest flights, the best time to fly and much more.

Which airlines fly non-stop between Boise and Porto?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Boise to Porto.

There are 2 airlines that fly nonstop from Boise to Porto. They are Delta and United Airlines. The cheapest airline for this route is United Airlines, with the best round-trip deal found costing $647. On average, the best prices for this route can be found at Delta.

Good to know

Low seasonNovember
Best time to beat the crowds with an average 40% drop in price.
Most popular time to fly and prices are also 17% lower on average.

When to book flights from Boise to Porto

Are your dates flexible? Find out the best times to travel from Boise to Porto based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boise to Porto

  • Do I need a passport to fly between Boise and Porto?

    A passport is required to fly from Boise to Porto.

  • Which aircraft models fly most regularly from Boise to Porto?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Boise to Porto?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Boise and Porto, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Boise to Porto, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Boise to Porto are Delta and United Airlines. With an average price for the route of $862 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,174 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Boise to Porto?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boise to Porto.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boise to Porto?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Boise is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boise to Porto?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to Boise with another airline. Booking your flights between Boise and OPO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boise to Porto?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from Boise up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Boise to Porto

 
See real verified KAYAK customer reviews for airlines flying from Boise to Porto. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boise to Porto? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8014 reviews
8.5Crew
7.9Entertainment
7.3Food
8.1Boarding
7.9Comfort
Airline reviews

Flight delays both to Detroits and return flight . The flight to Detroit was associated with mechanical difficulty

2.0 MediocreGina, Dec 2025
DTW - ELM
Read more Delta reviews

Flight delays both to Detroits and return flight . The flight to Detroit was associated with mechanical difficulty

I am extremely disappointed that delta internal pilot manuals now refer to the Gulf of Mexico as the “gulf of America”. You can bow down to the Orange turd on your own. I will never fly delta again

Wasn't a Delta issue I don't think, but seems there was a Delta flight at each of the 2 Dallas airports at the same exact time, both to Atlanta. I was evidently booked on the one at Love Airport, but the Carey transport shuttle took me to DFW instead and I ended up missing the flight by just a few minutes. Was able to book a Southwest flight from Love Airport, but was a big loss of time and an inconvenience.

Great. I had to modify a flight. That was easy and free. Thank You

I noticed that the planes seem to be outdated. There was no entertainment per se. Also, the waiting area did not have any working electrical outlets

None of the airplane features were available during the flight.

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

The food is terrible. The staff is wonderful. Comfort is good.

Left on time, a bit delayed due to headwinds most of the trip.

The Crew and the food was the worst I ever had in Business Class. First they told us there were no space for carry on. It was plenty of space over our 2 row seats, we had to ask to let us travel with it which was accepted. They were aware that we had to run for the connection due to the previous flight delay. Have us one hour waiting for more customers and not even offer a glass of water. Then started the service and they started to serve other passengers drinks in business and did not offer any drinks until they serve our pre ordered meal and I ask for something to drink. I had to wait until they finished to serve all passengers until Inget something. The crew was the worts I ever had for Business Class in my life.

Very turbulent trip made it pretty bearable, plus the lack of refreshments served and the lack of any air conditioning before takeoff which took an hour or more.

Flight was late - I was downgraded from first class to coach

Not good - outbound flight was delayed and missed my connection even though I got to the gate after running through the airport - the agent would not let me on because the door was closed (flight had not left). There was no notification from United - overall experience was very disappointing. Additionally, I was downgraded from first class to coach on the alternative flight

The flight was on time. I generally don’t drink or eat on short flights and the seats were good and the flight attendants were friendly. That’s all I expect

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

United overall experience is great these days. Airport experience was very organized. Staff on flight were great. App and information as good as it gets.

United have really come back. Airport and boarding process is clear and good, app and information also very good

They charged a fee for 1st bag checked. Others in same party were free.

Everything you need to know for your flight from Boise to Porto

Information on your arrival and departure airports