Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Boise to Portugal from $623

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Boise to Portugal departing on 10/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Boise to Portugal

Cheap round-trip flights

Iberia Logo
1:33 pm - 4:05 pmBOI-LIS
19h 32m2 stops
Iberia Logo
4:45 pm - 10:27 pmLIS-BOI
36h 42m2 stops
$623Iberia
Find Deal
Sun, Oct 19 - Mon, Nov 3
Air Canada Logo
5:20 pm - 9:20 amBOI-LIS
58h 00m2 stops
Air Canada Logo
11:20 am - 9:59 amLIS-BOI
29h 39m2 stops
$648Air Canada
Find Deal
Sat, Nov 1 - Sat, Dec 13
United Airlines Logo
9:45 am - 9:20 amBOI-LIS
40h 35m2 stops
United Airlines Logo
5:00 am - 10:45 pmLIS-BOI
24h 45m2 stops
$650United Airlines
Find Deal
Sun, Oct 19 - Mon, Nov 3
Finnair Logo
7:00 am - 11:05 pmBOI-LIS
33h 05m2 stops
Finnair Logo
4:10 pm - 10:27 pmLIS-BOI
37h 17m2 stops
$654Finnair
Find Deal
Sun, Oct 19 - Mon, Nov 3
United Airlines Logo
5:39 pm - 10:30 amBOI-LIS
33h 51m2 stops
United Airlines Logo
10:15 am - 10:58 amLIS-BOI
30h 43m2 stops
$673United Airlines
Find Deal
Sat, Oct 18 - Sat, Nov 1
United Airlines Logo
12:35 pm - 8:20 amBOI-LIS
36h 45m3 stops
United Airlines Logo
10:15 am - 10:58 amLIS-BOI
30h 43m2 stops
$728United Airlines
Find Deal
Sat, Oct 18 - Sat, Nov 1
United Airlines Logo
6:15 am - 10:15 amBOI-LIS
21h 00m2 stops
United Airlines Logo
11:20 am - 9:16 pmLIS-BOI
40h 56m2 stops
$731United Airlines
Find Deal
Sun, Nov 23 - Mon, Dec 1
Logo
8:00 am - 9:05 amBOI-LIS
18h 05m2 stops
Logo
11:05 am - 11:22 pmLIS-BOI
19h 17m2 stops
$825
Find Deal
Tue, Oct 7 - Wed, Oct 15
Logo
7:00 am - 9:05 amBOI-LIS
19h 05m2 stops
Logo
11:05 am - 10:03 pmLIS-BOI
17h 58m2 stops
$889
Find Deal
Sat, Nov 22 - Sun, Nov 30
Scandinavian Airlines Logo
3:05 pm - 4:05 pmBOI-LIS
42h 00m2 stops
Scandinavian Airlines Logo
7:05 am - 11:04 pmLIS-BOI
22h 59m2 stops
$978Scandinavian Airlines
Find Deal
Sat, Dec 6 - Wed, Dec 10

United Airlines flights from Boise to Portugal

Our best United Airlines deals on Boise to Portugal flight tickets
United Airlines
Oct 19
BOI9:45 amBoise Air Term. Gowen Fld
40h 35m
2 stops
LIS9:20 amLisbon Humberto Delgado
Nov 3
LIS5:00 amLisbon Humberto Delgado
24h 45m
2 stops
BOI10:45 pmBoise Air Term. Gowen Fld
$650
Find similar
United Airlines
Oct 18
BOI5:39 pmBoise Air Term. Gowen Fld
33h 51m
2 stops
LIS10:30 amLisbon Humberto Delgado
Nov 1
LIS10:15 amLisbon Humberto Delgado
30h 43m
2 stops
BOI10:58 amBoise Air Term. Gowen Fld
$673
Find similar
United Airlines
Oct 18
BOI12:35 pmBoise Air Term. Gowen Fld
36h 45m
3 stops
LIS8:20 amLisbon Humberto Delgado
Nov 1
LIS10:15 amLisbon Humberto Delgado
30h 43m
2 stops
BOI10:58 amBoise Air Term. Gowen Fld
$728
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Boise to Portugal 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, momondo users made 832,500 searches. Data last updated August 18, 2025.
Use the filters below to find and compare flights from Boise to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sun 10/19

1:33 pm-4:05 pm

2 stops19h 32m

Lisbon Humberto Delgado

Mon 11/3

4:45 pm-10:27 pm

2 stops36h 42m

$623

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sat 11/1

5:20 pm-9:20 am

2 stops58h 00m

Lisbon Humberto Delgado

Sat 12/13

11:20 am-9:59 am

2 stops29h 39m

$648

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sun 10/19

9:45 am-9:20 am

2 stops40h 35m

Lisbon Humberto Delgado

Mon 11/3

5:00 am-10:45 pm

2 stops24h 45m

$650

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sun 10/19

7:00 am-11:05 pm

2 stops33h 05m

Lisbon Humberto Delgado

Mon 11/3

4:10 pm-10:27 pm

2 stops37h 17m

$654

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sat 10/18

5:39 pm-10:30 am

2 stops33h 51m

Lisbon Humberto Delgado

Sat 11/1

10:15 am-10:58 am

2 stops30h 43m

$673

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sat 10/18

12:35 pm-8:20 am

3 stops36h 45m

Lisbon Humberto Delgado

Sat 11/1

10:15 am-10:58 am

2 stops30h 43m

$728

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sun 11/23

6:15 am-10:15 am

2 stops21h 00m

Lisbon Humberto Delgado

Mon 12/1

11:20 am-9:16 pm

2 stops40h 56m

$731

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Tue 10/7

8:00 am-9:05 am

2 stops18h 05m

Lisbon Humberto Delgado

Wed 10/15

11:05 am-11:22 pm

2 stops19h 17m

$825

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sat 11/22

7:00 am-9:05 am

2 stops19h 05m

Lisbon Humberto Delgado

Sun 11/30

11:05 am-10:03 pm

2 stops17h 58m

$889

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sat 12/6

3:05 pm-4:05 pm

2 stops42h 00m

Lisbon Humberto Delgado

Wed 12/10

7:05 am-11:04 pm

2 stops22h 59m

$978

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Portugal from

How to get the cheapest flight ticket from Boise to Portugal

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Portugal?

The cheapest month to fly to Portugal from Boise is in November. Flight prices, which tend to average around $710, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to Portugal from Boise during February instead. Flights to Portugal in February, while not as cheap as those in November, still average around $726.

What is the cheapest day to depart on your flight to Portugal?

According to our data, Wednesday is the cheapest day to fly to Portugal from Boise. The lowest ticket price found for a Wednesday departure recently was $1,041. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Portugal is Saturday, with ticket prices averaging around $1,444.

What is the cheapest time of day to depart on your flight to Portugal?

Our most recent data shows that the best time of day to fly to Portugal is in the afternoon. Flights from Boise to Portugal during this time can be as low as $1,071. In the evening is when there is more demand to fly to Portugal, so prices are often more expensive at around $1,393 per ticket.

How far in advance should I book a flight to Portugal?

You are more likely to see cheaper flights to Portugal from Boise when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $1,039 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from Boise for as low as $722 on momondo.

Cheap Boise to Portugal flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boise to Portugal

Best Price Found

$623

Fastest flight time

15h 38m

Direct flights

None

Airports in Portugal

1 airport
The best flight deal from Boise to Portugal found on momondo in the last 72 hours is $623
The fastest flight from Boise to Portugal takes 15h 38m
There are no direct flights from Boise to Portugal. Popular non-direct route for this connection is Boise Air Term. Gowen Fld Airport - Lisbon Humberto Delgado Airport.
There is 1 airport near Portugal: Lisbon Humberto Delgado (LIS)
Search flight deals

  • When did momondo last update prices for flights from Boise Air Term. Gowen Fld Airport to Portugal?

    Prices for flights from Boise Air Term. Gowen Fld Airport to Portugal are updated daily.

  • How many operators does momondo search for flights from Boise Air Term. Gowen Fld Airport to Portugal?

  • How old do you have to be to fly from Boise Air Term. Gowen Fld Airport to Portugal?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Boise Air Term. Gowen Fld Airport to Portugal.

  • What documentation or ID do you need to fly to Portugal?

    The required travel and health documents for your Portugal trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Portugal. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Boise to Portugal

Compare and see reviews for airlines that fly from Boise to Portugal with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $601Free CancellationRating
7.4
8,925 reviews
Search United Airlines flights
Air CanadaPriceFrom $602Free CancellationRating
7.1
9,992 reviews
Search Air Canada flights
American AirlinesPriceFrom $621Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $654Free CancellationRating
8.0
7,981 reviews
Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from Boise to Portugal?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Boise to Portugal. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Boise to Portugal with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Portugal from Boise with this policy.

How can momondo help me find flights from Boise to Portugal?

momondo helps you find the best flight between Boise and Portugal by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Boise to Portugal right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Portugal, momondo offers a useful price alert feature which will track prices for flights to Portugal from Boise and alert you when they change.

An easier way to manage your Portugal trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 8/23
Sat 8/30
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal

Popular cities in Portugal

Popular flights according to clicks in the last 7 days on momondo
Flights to Lisbonfrom $356
Flights to Portofrom $340
Flights to Funchalfrom $383
Flights to Farofrom $377
Flights to Ponta Delgadafrom $450
Flights to Lajesfrom $522
Flights to Hortafrom $589
Flights to Pico Islandfrom $559
Flights to Porto Santofrom $580
Flights to Velasfrom $591