$436+ Cheap flights from Boise (BOI) 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 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — OPO
Nov 29 — Dec 61
Round-trip
1 adult, Economy
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Find cheap flights from Boise 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.Cheap flight deals from Boise to Porto
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Cheapest flights from Boise to PortoExplore the most affordable flight options available from Boise to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.
Explore the most affordable flight options available from Boise to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.
This United Airlines deal was found by Cheapflights users on 10/25. 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 12/96:15 am -
2 stops20h 15m
Wed 12/166:00 am -
2 stops24h 34m
Deal found 10/25![United Airlines logo]()
$789
This Air France deal was found by Cheapflights users on 10/26. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/265:30 am -
2 stops22h 05m
Thu 12/35:00 am -
2 stops18h 04m
Deal found 10/26![Multiple Airlines logo]()
$835
This United Airlines deal was found by Cheapflights users on 10/26. 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 11/105:00 am -
2 stops21h 30m
Thu 11/196:00 am -
2 stops19h 03m
Deal found 10/26![United Airlines logo]()
$839
This KLM deal was found by Cheapflights users on 10/27. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/115:15 am -
2 stops20h 00m
Fri 12/185:55 am -
2 stops24h 47m
Deal found 10/27![Multiple Airlines logo]()
$917
This Air France deal was found by Cheapflights users on 10/26. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/294:45 pm -
2 stops22h 10m
Fri 12/411:15 am -
2 stops19h 55m
Deal found 10/26![Multiple Airlines logo]()
$1,195
This United Airlines deal was found by Cheapflights users on 10/27. 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 12/118:00 am -
2 stops18h 30m
Fri 12/187:00 am -
3 stops21h 43m
Deal found 10/27![United Airlines logo]()
$1,461
This United Airlines deal was found by Cheapflights users on 10/26. 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.
Sun 11/2910:34 am -
2 stops15h 56m
Fri 12/47:00 am -
3 stops22h 59m
Deal found 10/26![United Airlines logo]()
$1,887
Best flights from Boise to PortoDiscover carefully curated flight deals from Boise to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.
Discover carefully curated flight deals from Boise to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.
This KLM deal was found by Cheapflights users on 10/25. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/103:22 pm -
2 stops20h 58m
Tue 3/165:00 am -
2 stops21h 17m
Deal found 10/25![KLM logo]()
$720
This Delta deal was found by Cheapflights users on 10/26. 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.
Wed 1/2710:33 am -
2 stops28h 27m
Wed 2/311:15 am -
2 stops43h 34m
Deal found 10/26![Delta logo]()
$726
This United Airlines deal was found by Cheapflights users on 10/25. 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 12/96:15 am -
2 stops20h 15m
Wed 12/166:00 am -
2 stops24h 34m
Deal found 10/25![United Airlines logo]()
$789
This Delta deal was found by Cheapflights users on 10/26. 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.
Sun 1/241:43 pm -
2 stops25h 12m
Tue 2/211:15 am -
2 stops38h 18m
Deal found 10/26![Delta logo]()
$726
This KLM deal was found by Cheapflights users on 10/25. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/103:22 pm -
2 stops20h 58m
Sun 3/145:00 am -
2 stops21h 17m
Deal found 10/25![KLM logo]()
$770
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Sun 4/187:00 am -
2 stops19h 45m
Tue 5/46:00 am -
2 stops24h 06m
Deal found 10/27![United Airlines logo]()
$792
This Delta deal was found by Cheapflights users on 10/26. 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.
Sun 1/247:15 am -
2 stops31h 40m
Mon 2/111:15 am -
2 stops58h 07m
Deal found 10/26![Delta logo]()
$726
This Delta deal was found by Cheapflights users on 10/25. 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.
Wed 3/1012:42 pm -
2 stops26h 18m
Mon 3/1511:15 am -
2 stops41h 26m
Deal found 10/25![Delta logo]()
$726
This United Airlines deal was found by Cheapflights users on 10/26. 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.
Sun 4/185:00 am -
2 stops21h 45m
Mon 5/36:00 am -
2 stops48h 06m
Deal found 10/26![United Airlines logo]()
$814
This Delta deal was found by Cheapflights users on 10/26. 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 1/2510:33 am -
2 stops28h 27m
Tue 2/211:15 am -
2 stops40h 18m
Deal found 10/26![Delta logo]()
$726
This United Airlines deal was found by Cheapflights users on 10/25. 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 3/107:00 am -
2 stops19h 30m
Mon 3/156:00 am -
3 stops43h 46m
Deal found 10/25![United Airlines logo]()
$821
This Delta deal was found by Cheapflights users on 10/27. 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 2/15:30 am -
2 stops22h 05m
Mon 2/155:00 am -
2 stops22h 17m
Deal found 10/27![Delta logo]()
$776
Last-minute flights from Boise to PortoDiscover last-minute flight deals from Boise to Porto. Data last updated October 30, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to Porto. Data last updated October 30, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/26. 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 11/105:00 am -
2 stops21h 30m
Thu 11/196:00 am -
2 stops19h 03m
Deal found 10/26![United Airlines logo]()
$839
This Air France deal was found by Cheapflights users on 10/26. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/265:30 am -
2 stops22h 05m
Thu 12/35:00 am -
2 stops18h 04m
Deal found 10/26![Multiple Airlines logo]()
$835
This Air France deal was found by Cheapflights users on 10/26. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/294:45 pm -
2 stops22h 10m
Fri 12/411:15 am -
2 stops19h 55m
Deal found 10/26![Multiple Airlines logo]()
$1,195
This United Airlines deal was found by Cheapflights users on 10/26. 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.
Sun 11/2910:34 am -
2 stops15h 56m
Fri 12/47:00 am -
3 stops22h 59m
Deal found 10/26![United Airlines logo]()
$1,887
One-way flights from Boise to PortoSearch for one-way flight options from Boise to Porto. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
Search for one-way flight options from Boise to Porto. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/25. 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 11/118:30 am -
3 stops23h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Multiple Airlines logo]()
$436
Find flight deals from Boise to Porto
Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) 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 October 30, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $716 (Air France) |
One-way from | $436 (Kiwi.com) |
Cheapflights Fare Finder
Customize your flight search to find flights from Boise 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 October 30, 2026.
Use the filters below to find and compare flights from Boise to Porto that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Wed 11/11
8:30 am-3:00 pm
3 stops23h 30m
Porto
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$436
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Wed 3/10
3:22 pm-7:20 pm
2 stops20h 58m
Porto
Tue 3/16
5:00 am-8:17 pm
2 stops21h 17m
$720
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Wed 1/27
10:33 am-10:00 pm
2 stops28h 27m
Porto
Wed 2/3
11:15 am-11:49 pm
2 stops43h 34m
$726
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Sun 1/24
1:43 pm-9:55 pm
2 stops25h 12m
Porto
Tue 2/2
11:15 am-6:33 pm
2 stops38h 18m
$726
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Sun 1/24
7:15 am-9:55 pm
2 stops31h 40m
Porto
Mon 2/1
11:15 am-2:22 pm
2 stops58h 07m
$726
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Wed 3/10
12:42 pm-10:00 pm
2 stops26h 18m
Porto
Mon 3/15
11:15 am-10:41 pm
2 stops41h 26m
$726
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Mon 1/25
10:33 am-10:00 pm
2 stops28h 27m
Porto
Tue 2/2
11:15 am-8:33 pm
2 stops40h 18m
$726
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Wed 3/10
3:22 pm-7:20 pm
2 stops20h 58m
Porto
Sun 3/14
5:00 am-7:17 pm
2 stops21h 17m
$770
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Mon 2/1
5:30 am-10:35 am
2 stops22h 05m
Porto
Mon 2/15
5:00 am-8:17 pm
2 stops22h 17m
$776
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Wed 12/9
6:15 am-9:30 am
2 stops20h 15m
Porto
Wed 12/16
6:00 am-11:34 pm
2 stops24h 34m
$789
Showing 1-10 of 13 resultsSorted by cheapest first
Compare providers for flights from Boise 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 Boise to Porto in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Boise-Porto flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Boise-Porto flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Boise-Porto flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boise-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 Boise-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 Boise to Porto
Have a flexible travel schedule? Discover the best time to fly to Porto from Boise with our price prediction graph.
BOI-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.
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 October 30, 2026.
Peruse reviews from past customers who have flown with Delta and United Airlines from Boise to Porto to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.2
Overall
7.8
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Food
7.2
Overall
7.8
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Food
7.2
Overall
7.8
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Related info for your journey
Find useful and relevant information for your journey from Boise 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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Find flights from Boise to Porto, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Boise and Porto flights
Browse other Boise and Porto flight options. Last updated on October 30, 2026.
Other flights from Boise
Browse through other flights departing from Boise. Flights are based on user searches made on Cheapflights and were last updated on October 30, 2026.
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Other flights to Porto
Explore flights to Porto departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 30, 2026.
Top 2 airlines flying from Boise to Porto
Discover the top 2 airlines that operate flights from Boise 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 October 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$737 | Average$1,050 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$783 | Average$929 | FlexibilityNo cancel fee | On-timeN/A |