$382 Find Cheap Flights from Boise to Portugal

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boise to Portugal departing on 7/27. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Boise to Portugal

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbon2 stops$775
Porto
Porto2 stops$892
Lisbon
Lisbon2 stops$775
Porto
Porto2 stops$892

Book Cheap Boise to Portugal Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boise to Portugal 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 Portugal

mån, apr 20 - tis, maj 5
Multiple Airlines Logo
3:44 pm - 5:50 pm
BOI
-
LIS
19h 06m
2 stops
Multiple Airlines Logo
5:00 am - 8:29 pm
LIS
-
BOI
22h 29m
2 stops
$775Multiple Airlines
tis, apr 21 - tis, maj 5
Multiple Airlines Logo
4:15 pm - 5:55 pm
BOI
-
LIS
18h 40m
2 stops
Multiple Airlines Logo
6:35 am - 10:38 pm
LIS
-
BOI
23h 03m
2 stops
$781Multiple Airlines
mån, apr 20 - tis, maj 5
Finnair Logo
1:29 pm - 11:25 pm
BOI
-
LIS
26h 56m
2 stops
Finnair Logo
6:35 am - 10:38 pm
LIS
-
BOI
23h 03m
2 stops
$782Finnair
tis, apr 14 - tis, apr 28
Delta Logo
8:30 am - 2:55 pm
BOI
-
LIS
23h 25m
2 stops
Delta Logo
5:00 am - 10:24 pm
LIS
-
BOI
24h 24m
2 stops
$785Delta
tis, apr 14 - tis, apr 28
KLM Logo
3:44 pm - 6:45 pm
BOI
-
LIS
20h 01m
2 stops
KLM Logo
5:00 am - 8:00 pm
LIS
-
BOI
22h 00m
2 stops
$789KLM
tis, apr 14 - tis, apr 28
KLM Logo
3:23 pm - 6:45 pm
BOI
-
LIS
20h 22m
2 stops
KLM Logo
5:00 am - 8:00 pm
LIS
-
BOI
22h 00m
2 stops
$790KLM
ons, apr 22 - ons, maj 13
Multiple Airlines Logo
3:44 pm - 5:50 pm
BOI
-
LIS
19h 06m
2 stops
Multiple Airlines Logo
5:00 am - 5:09 pm
LIS
-
BOI
19h 09m
2 stops
$832Multiple Airlines
tis, maj 5 - lör, maj 16
Multiple Airlines Logo
2:18 pm - 5:50 pm
BOI
-
LIS
20h 32m
2 stops
Multiple Airlines Logo
8:55 am - 10:13 pm
LIS
-
BOI
20h 18m
2 stops
$837Multiple Airlines
tors, apr 16 - tis, apr 21
Iberia Logo
1:41 pm - 6:25 pm
BOI
-
LIS
21h 44m
2 stops
Iberia Logo
8:45 pm - 9:07 pm
LIS
-
BOI
31h 22m
2 stops
$839Iberia
sön, sep 20 - tors, okt 8
Delta Logo
2:45 pm - 5:50 pm
BOI
-
LIS
20h 05m
2 stops
Delta Logo
5:00 am - 8:17 pm
LIS
-
BOI
22h 17m
2 stops
$843Delta
Booking Insights

KAYAK's insights & trends for Boise to Portugal flights

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

Which airlines provide the cheapest flights from Boise to Portugal?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Boise to Portugal were found on KLM ($789) and Delta ($1,006).

Good to know

Low seasonApril
Cheapest flight$382
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly and prices are also 41% lower on average.
Flight from Boise to Lisbon

FAQs - booking Portugal flights

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

    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 Portugal.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Boise to Portugal 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 Portugal?

    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 from Boise to Portugal with an airline and back with another airline.

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

    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 from Boise to Portugal 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 Portugal

 
Need help choosing which airline to fly with from Boise to Portugal? 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 8369 reviews
7.2Food
7.8Entertainment
8.1Boarding
8.5Crew
7.9Comfort
Airline reviews

my mom urmila patel needed a wheelchair which was not available on the curbside. she needed to walk almost 50 meters inside (at the risk of falling) and then had to wait in line to get a wheelchair (this is not ok). Once obtained she had to seat in it for 30-45 minutes for someone to take her in thru the checkin process (which was fairly smooth and easy). the lady who helped her with her checkin process was very courteous and helpful

10.0 ExcellentViraj, Apr 2026
JFK - SFO
Read more Delta reviews

my mom urmila patel needed a wheelchair which was not available on the curbside. she needed to walk almost 50 meters inside (at the risk of falling) and then had to wait in line to get a wheelchair (this is not ok). Once obtained she had to seat in it for 30-45 minutes for someone to take her in thru the checkin process (which was fairly smooth and easy). the lady who helped her with her checkin process was very courteous and helpful

On the return flight, flight attendant Britt went out of her way to inform passengers that several of us had tight connections.

Fast, lovely scenery, great info on the Delta flight screen about landmarks we were flying over. Great landing!

Staff at the check-in counter were friendly, happy and helpful. They tagged our bags and sent us to “bag drop off” but were not very clear about where that was. The airport was busy we headed off in what we thought was the right direction until a gentleman waved us down and actually came after us. He was the baggage handler for Delta and recognized our “deer in the headlights “ look-he brought us to the right area (which was marked as the Southwest Airlines Drop Off) and sent us on our way. Wonderful guy, low key and working with a big smile on his face. Loved it. Loved him.

During the flight, the only refreshments provided were crackers and soft drinks; no substantial food was offered despite the international route. Furthermore, our initial flight was delayed, causing us to miss the connecting flight in Atlanta. The airline did not hold the connection, and we were informed that the next available flight is not for another 24 hours. While I am aware of alternative options via JetBlue, they operate out of JFK, which is not a viable solution for us as a resident of New Jersey.

Arlene was a great flight attendant. I also liked how one of the other flight attendants gave us a heads up about snacks and asked everyone to remove their headphones when it was their turn to order. Good idea.

Long flight but comfortable and not freezing as I have experienced on Hawaiian flights to the islands. They gave us blankets just in case. Nice touch.

I haven’t flown economy in over 20 years but it was not bad. Room by my feet for my bag and seat was roomy enough. Surprised in a good way.

The flight was delayed 90 minutes The Gate was wrong The Restroom on Aircraft was not clean There was a half used water bottle in my seat

Delta is always a wonderful experience. A clean plane and the crew is really friendly.

I had a cancelled flight because of technical issues going to my destination, and a delayed flight coming home. All told it wasn’t a total bust.

Just a bad day to fly. Flight was delayed from scheduled 6:50 pm departure to 8:50 pm. Combination of factors mostly related to weather at the destination airport (which is where the incoming flight originated) which delayed the inbound flight over an hour. Once on board, we taxied but had to hold again on the taxiway for 10 minutes or so. We did not get wheels up until after 9 pm. The flight was smooth but about 18 minutes from our destination, we had to hold for several minutes more due to weather at ORD. We finally landed at ORD about 11:08 pm (accounting for the time difference, that was about a 3 hour delay from our scheduled departure time). It felt like we were never going to get to our destination. But the flight crew and attendants were very good. The movie selection onboard was also very nice. Got to watch half of a movie just during our taxi from the gate at ATL due to the delay!

Fine. The issues I had were associated with luggage being delayed from Turkey to Tanzania

No meal service to the back of the plane as it started late or was too slow to get it out before it was time to land.

Terrible, if possible won't be flying again anytime soon!

Efficient boarding and early departure. Very smooth flight. Early arrival in ATL. Great flight.

We purchase first class seats for the first time for multiples of standard economy ticket. There was no access to the club lounge and no priority boarding. The meal and the service once on the plane were superior and the seat was nicer, but not worth the price difference. I will be happy to seat in economy and spend the difference on more travel.

The business class seat is exceptional. I wish the food is more palatable.

Wonderful in-seat entertainment with seatback screens and huge selection of quality movies. The ability to bluetooth connect headphones was amazing.

the entire flight felt off. The crew seemed uninterested and disengaged. The food service was really bad - overcooked, bland, weird food service. They actually woke us up to serve chicken wraps in the middle of the night, after dinner and before breakfast. Made no sense. Ultimately, I was glad they did though, because the breakfast had been held for so long it was inedible. Eggs, potatoes, sausage - all disgusting. We were asked to "honor" the lavatories for premium customers and stay in our own cabin: this was also strange. So people in economy didn't pay enough to use the closest toilet to them??? It's a toilet. All in all, not the experience I have come to expect from United Airlines. The return flight from Paris to SFO was better, btw.

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

Information on your arrival and departure airports