$580+ 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 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — OPO
Oct 14 — Oct 211
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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Best
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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 September 14, 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 September 14, 2026.
This United Airlines deal was found by Cheapflights users on 9/11. 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 11/106:30 am -
2 stops20h 00m
Thu 11/1912:35 pm -
2 stops17h 24m
Deal found 9/11![United Airlines logo]()
$580
This Iberia deal was found by Cheapflights users on 9/10. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:00 am -
2 stops21h 45m
Thu 11/198:40 pm -
2 stops34h 09m
Deal found 9/10![Iberia logo]()
$592
This Delta deal was found by Cheapflights users on 9/12. 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.
Tue 10/275:30 am -
2 stops23h 05m
Tue 11/35:55 am -
2 stops24h 09m
Deal found 9/12![Delta logo]()
$609
This Expedia deal was found by Cheapflights users on 9/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:00 am -
2 stops31h 05m
Tue 11/38:40 pm -
2 stops33h 02m
Deal found 9/10![Iberia logo]()
$631
This KLM deal was found by Cheapflights users on 9/11. 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.
Sat 10/243:00 pm -
2 stops18h 25m
Tue 11/35:00 am -
2 stops25h 04m
Deal found 9/11![KLM logo]()
$671
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Mon 10/265:00 am -
2 stops28h 20m
Mon 11/212:30 pm -
2 stops41h 21m
Deal found 9/11![United Airlines logo]()
$687
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Mon 10/56:25 am -
2 stops20h 20m
Mon 10/1912:10 pm -
2 stops54h 18m
Deal found 9/13![United Airlines logo]()
$904
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Mon 9/147:05 pm -
2 stops37h 40m
Mon 9/2112:10 pm -
2 stops36h 48m
Deal found 9/14![United Airlines logo]()
$2,947
This American Airlines deal was found by Cheapflights users on 9/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/512:14 pm -
2 stops20h 46m
Mon 10/198:20 am -
3 stops21h 09m
Deal found 9/13![Multiple Airlines logo]()
$3,432
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:00 am -
2 stops21h 45m
Thu 11/198:20 am -
3 stops21h 00m
Deal found 9/10![Multiple Airlines logo]()
$6,777
This American Airlines deal was found by Cheapflights users on 9/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:00 am -
2 stops18h 40m
Tue 11/38:20 am -
3 stops21h 00m
Deal found 9/12![Multiple Airlines logo]()
$7,527
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 September 14, 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 September 14, 2026.
This United Airlines deal was found by Cheapflights users on 9/11. 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 11/106:30 am -
2 stops20h 00m
Thu 11/1912:35 pm -
2 stops17h 24m
Deal found 9/11![United Airlines logo]()
$580
This Expedia deal was found by Cheapflights users on 9/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:00 am -
2 stops21h 45m
Thu 11/198:40 pm -
2 stops34h 09m
Deal found 9/14![Iberia logo]()
$592
This Delta deal was found by Cheapflights users on 9/12. 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.
Tue 10/275:30 am -
2 stops23h 05m
Tue 11/35:55 am -
2 stops24h 09m
Deal found 9/12![Delta logo]()
$609
This KLM deal was found by Cheapflights users on 9/11. 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.
Sat 10/243:00 pm -
2 stops18h 25m
Tue 11/35:00 am -
2 stops25h 04m
Deal found 9/11![KLM logo]()
$671
This Expedia deal was found by Cheapflights users on 9/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:00 am -
2 stops31h 05m
Tue 11/38:40 pm -
2 stops33h 02m
Deal found 9/10![Iberia logo]()
$631
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Mon 10/266:20 am -
2 stops27h 00m
Mon 11/26:00 am -
3 stops41h 42m
Deal found 9/11![United Airlines logo]()
$780
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Mon 10/56:25 am -
2 stops20h 20m
Mon 10/1912:10 pm -
2 stops54h 18m
Deal found 9/13![United Airlines logo]()
$904
This American Airlines deal was found by Cheapflights users on 9/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/512:14 pm -
2 stops20h 46m
Mon 10/198:20 am -
3 stops21h 09m
Deal found 9/13![Multiple Airlines logo]()
$3,432
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:00 am -
2 stops21h 45m
Thu 11/198:20 am -
3 stops21h 00m
Deal found 9/14![Multiple Airlines logo]()
$6,777
Last-minute flights from Boise to PortoDiscover last-minute flight deals from Boise to Porto. Data last updated September 14, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to Porto. Data last updated September 14, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Mon 9/147:05 pm -
2 stops37h 40m
Mon 9/2112:10 pm -
2 stops36h 48m
Deal found 9/14![United Airlines logo]()
$2,947
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Mon 10/56:25 am -
2 stops20h 20m
Mon 10/1912:10 pm -
2 stops54h 18m
Deal found 9/13![United Airlines logo]()
$904
This American Airlines deal was found by Cheapflights users on 9/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/512:14 pm -
2 stops20h 46m
Mon 10/198:20 am -
3 stops21h 09m
Deal found 9/13![Multiple Airlines logo]()
$3,432
This Expedia deal was found by Cheapflights users on 9/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:00 am -
2 stops31h 05m
Tue 11/38:40 pm -
2 stops33h 02m
Deal found 9/10![Iberia logo]()
$631
This KLM deal was found by Cheapflights users on 9/11. 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.
Sat 10/243:00 pm -
2 stops18h 25m
Tue 11/35:00 am -
2 stops25h 04m
Deal found 9/11![KLM logo]()
$671
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Mon 10/265:00 am -
2 stops28h 20m
Mon 11/212:30 pm -
2 stops41h 21m
Deal found 9/11![United Airlines logo]()
$687
This Delta deal was found by Cheapflights users on 9/12. 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.
Tue 10/275:30 am -
2 stops23h 05m
Tue 11/35:55 am -
2 stops24h 09m
Deal found 9/12![Delta logo]()
$609
This American Airlines deal was found by Cheapflights users on 9/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:00 am -
2 stops18h 40m
Tue 11/38:20 am -
3 stops21h 00m
Deal found 9/12![Multiple Airlines logo]()
$7,527
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 September 14, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $580 (United Airlines) |
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 September 14, 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
Tue 11/10
6:30 am-9:30 am
2 stops20h 00m
Porto
Thu 11/19
12:35 pm-10:59 pm
2 stops17h 24m
$580
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Tue 11/10
7:00 am-11:45 am
2 stops21h 45m
Porto
Thu 11/19
8:40 pm-11:49 pm
2 stops34h 09m
$592
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Tue 10/27
5:30 am-10:35 am
2 stops23h 05m
Porto
Tue 11/3
5:55 am-11:04 pm
2 stops24h 09m
$609
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Sat 10/24
7:00 am-9:05 pm
2 stops31h 05m
Porto
Tue 11/3
8:40 pm-10:42 pm
2 stops33h 02m
$631
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Sat 10/24
3:00 pm-4:25 pm
2 stops18h 25m
Porto
Tue 11/3
5:00 am-11:04 pm
2 stops25h 04m
$671
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Mon 10/26
6:20 am-3:20 pm
2 stops27h 00m
Porto
Mon 11/2
6:00 am-4:42 pm
3 stops41h 42m
$780
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Mon 10/5
6:25 am-9:45 am
2 stops20h 20m
Porto
Mon 10/19
12:10 pm-11:28 am
2 stops54h 18m
$904
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Mon 10/5
12:14 pm-4:00 pm
2 stops20h 46m
Porto
Mon 10/19
8:20 am-10:29 pm
3 stops21h 09m
$3,432
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Tue 11/10
7:00 am-11:45 am
2 stops21h 45m
Porto
Thu 11/19
8:20 am-10:20 pm
3 stops21h 00m
$6,777
Sorted 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 September.
| 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 September 14, 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.
Comfort
7.8
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.8
Boarding
8.1
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Comfort
7.8
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.8
Boarding
8.1
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Comfort
7.8
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.8
Boarding
8.1
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
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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Boise and Porto flights
Browse other Boise and Porto flight options. Last updated on September 14, 2026.
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Browse through other flights departing from Boise. Flights are based on user searches made on Cheapflights and were last updated on September 14, 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 September 14, 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 September 14, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$737 | Average$1,050 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$783 | Average$896 | FlexibilityNo cancel fee | On-timeN/A |