$482+ Cheap flights from Boise (BOI) to Portugal
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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LIS
Nov 21 — Nov 281
Round-trip
1 adult, Economy
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Find cheap flights from Boise to Portugal 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
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Cheapest flights from Boise to PortugalExplore the most affordable flight options available from Boise to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 22, 2026.
Explore the most affordable flight options available from Boise to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 22, 2026.
This United Airlines deal was found by Cheapflights users on 10/18. 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 12/14:24 pm -
2 stops31h 31m
Thu 12/1010:55 am -
2 stops41h 32m
Deal found 10/18![United Airlines logo]()
$713
This American Airlines deal was found by Cheapflights users on 10/21. 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 12/11:24 pm -
2 stops18h 26m
Thu 12/106:30 am -
2 stops23h 16m
Deal found 10/21![American Airlines logo]()
$717
This United Airlines deal was found by Cheapflights users on 10/19. 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.
Thu 12/36:15 am -
2 stops21h 05m
Thu 12/1010:55 am -
2 stops41h 32m
Deal found 10/19![United Airlines logo]()
$765
This United deal was found by Cheapflights users on 10/18. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/235:00 am -
2 stops22h 40m
Thu 12/38:55 am -
2 stops45h 04m
Deal found 10/18![Multiple Airlines logo]()
$782
This United Airlines deal was found by Cheapflights users on 10/18. 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 11/225:44 pm -
2 stops32h 46m
Fri 12/46:00 am -
2 stops22h 27m
Deal found 10/18![United Airlines logo]()
$783
This Delta deal was found by Cheapflights users on 10/18. 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 11/2211:10 pm -
2 stops28h 25m
Wed 12/211:15 am -
2 stops38h 23m
Deal found 10/18![Delta logo]()
$784
This Air France deal was found by Cheapflights users on 10/17. 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.
Tue 11/241:19 pm -
2 stops18h 51m
Tue 12/83:35 pm -
2 stops32h 41m
Deal found 10/17![Multiple Airlines logo]()
$792
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Sat 12/55:35 pm -
2 stops36h 55m
Sat 12/1212:25 pm -
2 stops53h 43m
Deal found 10/20![United Airlines logo]()
$807
This United Airlines deal was found by Cheapflights users on 10/18. 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 11/235:00 am -
2 stops22h 40m
Wed 12/212:25 pm -
2 stops36h 34m
Deal found 10/18![United Airlines logo]()
$822
This Air France deal was found by Cheapflights users on 10/18. 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.
Mon 11/231:17 pm -
2 stops25h 43m
Tue 12/14:10 pm -
2 stops32h 43m
Deal found 10/18![Multiple Airlines logo]()
$823
This Delta deal was found by Cheapflights users on 10/18. 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 11/2412:13 pm -
2 stops20h 12m
Tue 12/111:15 am -
2 stops35h 49m
Deal found 10/18![Delta logo]()
$827
This Air France deal was found by Cheapflights users on 10/19. 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.
Mon 12/75:15 am -
2 stops22h 20m
Mon 12/145:00 am -
2 stops24h 58m
Deal found 10/19![Multiple Airlines logo]()
$828
Best flights from Boise to PortugalDiscover carefully curated flight deals from Boise to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 22, 2026.
Discover carefully curated flight deals from Boise to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 22, 2026.
This United Airlines deal was found by Cheapflights users on 10/18. 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
Mon 5/312:00 pm -
2 stops38h 16m
Deal found 10/18![United Airlines logo]()
$749
This Delta deal was found by Cheapflights users on 10/18. 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 1/68:40 am -
2 stops30h 20m
Wed 1/2011:15 am -
2 stops40h 02m
Deal found 10/18![Delta logo]()
$789
This Air France deal was found by Cheapflights users on 10/20. 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.
Tue 11/105:30 am -
2 stops22h 05m
Thu 11/195:00 am -
2 stops19h 19m
Deal found 10/20![Multiple Airlines logo]()
$834
This United Airlines deal was found by Cheapflights users on 10/19. 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.
Thu 12/36:15 am -
2 stops21h 05m
Thu 12/1010:55 am -
2 stops41h 32m
Deal found 10/19![United Airlines logo]()
$765
This Delta deal was found by Cheapflights users on 10/18. 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 1/68:40 am -
2 stops30h 20m
Thu 1/145:00 am -
2 stops18h 49m
Deal found 10/18![Delta logo]()
$789
This United Airlines deal was found by Cheapflights users on 10/21. 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 2/16:00 am -
2 stops26h 25m
Mon 2/156:00 am -
3 stops63h 56m
Deal found 10/21![United Airlines logo]()
$772
This Delta deal was found by Cheapflights users on 10/18. 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 11/2412:13 pm -
2 stops20h 12m
Tue 12/111:15 am -
2 stops35h 49m
Deal found 10/18![Delta logo]()
$827
This United Airlines deal was found by Cheapflights users on 10/17. 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.
Sat 4/105:00 am -
2 stops46h 30m
Sat 4/171:00 pm -
2 stops51h 43m
Deal found 10/17![United Airlines logo]()
$787
This Delta deal was found by Cheapflights users on 10/18. 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 11/2510:37 am -
2 stops21h 48m
Tue 12/111:15 am -
2 stops35h 49m
Deal found 10/18![Delta logo]()
$827
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Sat 12/55:35 pm -
2 stops36h 55m
Sat 12/1212:25 pm -
2 stops53h 43m
Deal found 10/20![United Airlines logo]()
$807
This United Airlines deal was found by Cheapflights users on 10/18. 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 11/235:00 am -
2 stops22h 40m
Wed 12/212:25 pm -
2 stops36h 34m
Deal found 10/18![United Airlines logo]()
$822
This United Airlines deal was found by Cheapflights users on 10/17. 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 10/17![United Airlines logo]()
$833
This United Airlines deal was found by Cheapflights users on 10/18. 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 12/66:15 am -
2 stops18h 55m
Wed 12/911:20 am -
2 stops33h 19m
Deal found 10/18![United Airlines logo]()
$1,189
This United Airlines deal was found by Cheapflights users on 10/21. 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 1/116:00 am -
2 stops19h 10m
Thu 1/1410:15 am -
2 stops30h 44m
Deal found 10/21![United Airlines logo]()
$1,219
This United Airlines deal was found by Cheapflights users on 10/18. 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 11/2510:34 am -
2 stops16h 46m
Tue 12/812:50 pm -
3 stops31h 49m
Deal found 10/18![United Airlines logo]()
$3,574
This United Airlines deal was found by Cheapflights users on 10/17. 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 11/308:28 am -
2 stops18h 52m
Mon 12/1411:20 am -
3 stops33h 19m
Deal found 10/17![United Airlines logo]()
$3,579
This United Airlines deal was found by Cheapflights users on 10/20. 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 11/292:51 pm -
2 stops35h 29m
Mon 12/1411:20 am -
3 stops33h 19m
Deal found 10/20![United Airlines logo]()
$3,582
Last-minute flights from Boise to PortugalDiscover last-minute flight deals from Boise to Portugal. Data last updated October 22, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to Portugal. Data last updated October 22, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/19. 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 10/19![United Airlines logo]()
$833
This Air France deal was found by Cheapflights users on 10/20. 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.
Tue 11/101:19 pm -
2 stops25h 41m
Tue 11/174:10 pm -
2 stops30h 55m
Deal found 10/20![Multiple Airlines logo]()
$834
This Delta deal was found by Cheapflights users on 10/18. 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.
Thu 11/1910:37 am -
2 stops21h 48m
Thu 12/35:00 am -
2 stops18h 04m
Deal found 10/18![Delta logo]()
$838
This United Airlines deal was found by Cheapflights users on 10/18. 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.
Sat 11/215:44 pm -
2 stops32h 46m
Fri 12/412:35 pm -
2 stops28h 24m
Deal found 10/18![United Airlines logo]()
$832
This United Airlines deal was found by Cheapflights users on 10/18. 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 11/225:44 pm -
2 stops32h 46m
Fri 12/46:00 am -
2 stops22h 27m
Deal found 10/18![United Airlines logo]()
$783
This Delta deal was found by Cheapflights users on 10/18. 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 11/2211:10 pm -
2 stops28h 25m
Wed 12/211:15 am -
2 stops38h 23m
Deal found 10/18![Delta logo]()
$784
This United Airlines deal was found by Cheapflights users on 10/18. 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 11/225:44 pm -
2 stops32h 46m
Tue 12/112:35 pm -
2 stops39h 55m
Deal found 10/18![United Airlines logo]()
$829
This United deal was found by Cheapflights users on 10/18. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/235:00 am -
2 stops22h 40m
Thu 12/38:55 am -
2 stops45h 04m
Deal found 10/18![Multiple Airlines logo]()
$782
This United Airlines deal was found by Cheapflights users on 10/18. 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 11/235:00 am -
2 stops22h 40m
Wed 12/212:25 pm -
2 stops36h 34m
Deal found 10/18![United Airlines logo]()
$822
This Air France deal was found by Cheapflights users on 10/18. 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.
Mon 11/231:17 pm -
2 stops25h 43m
Tue 12/14:10 pm -
2 stops32h 43m
Deal found 10/18![Multiple Airlines logo]()
$823
This Air France deal was found by Cheapflights users on 10/17. 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.
Tue 11/241:19 pm -
2 stops18h 51m
Tue 12/83:35 pm -
2 stops32h 41m
Deal found 10/17![Multiple Airlines logo]()
$792
This Delta deal was found by Cheapflights users on 10/18. 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 11/2412:13 pm -
2 stops20h 12m
Tue 12/111:15 am -
2 stops35h 49m
Deal found 10/18![Delta logo]()
$827
One-way flights from Boise to PortugalSearch for one-way flight options from Boise to Portugal. Find affordable one-way fares based on user searches. Data last updated October 22, 2026.
Search for one-way flight options from Boise to Portugal. Find affordable one-way fares based on user searches. Data last updated October 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/19. 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.
Fri 1/155:46 am -
3 stops31h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Multiple Airlines logo]()
$482
This Delta deal was found by Cheapflights users on 10/20. 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 1/47:15 am -
2 stops17h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Delta logo]()
$583
This United Airlines deal was found by Cheapflights users on 10/17. 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 1/48:05 am -
3 stops41h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/17![United Airlines logo]()
$613
This KAYAK deal was found by Cheapflights users on 10/21. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/47:38 am -
1 stop21h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$944
Find flight deals from Boise to Portugal
Keep the following information in mind while searching for Boise to Portugal flight deals. Data was last updated October 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $713 (United Airlines) |
One-way from | $482 (Kiwi.com) |
Popular in | December |
Cheapest in | April |
Average price | $873 |
Cheapflights 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, Cheapflights users made 7,457,451 searches. Data last updated October 22, 2026.
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
Cheapest round-trip
BoiseLisbon
BOI Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado
BOILIS
Boise Air Term. Gowen Fld
Fri 1/15
3:01 pm-10:45 pm
2 stops24h 44m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$537
Quickest round-trip
BoiseLisbon
BOI Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado
BOILIS
Boise Air Term. Gowen Fld
Mon 1/4
7:15 am-8:00 am
2 stops17h 45m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$583
BoiseLisbon
BOI Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado
BOILIS
Boise Air Term. Gowen Fld
Mon 1/4
8:05 am-8:10 am
3 stops41h 05m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$613
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Sun 4/18
7:00 am-9:45 am
2 stops19h 45m
Porto
Mon 5/3
12:00 pm-7:16 pm
2 stops38h 16m
$749
BoiseLisbon
BOI Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado
BOILIS
Boise Air Term. Gowen Fld
Thu 12/3
6:15 am-10:20 am
2 stops21h 05m
Lisbon Humberto Delgado
Thu 12/10
10:55 am-9:27 pm
2 stops41h 32m
$765
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Mon 2/1
6:00 am-3:25 pm
2 stops26h 25m
Porto
Mon 2/15
6:00 am-2:56 pm
3 stops63h 56m
$772
BoiseLisbon
BOI Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado
BOILIS
Boise Air Term. Gowen Fld
Sat 4/10
5:00 am-10:30 am
2 stops46h 30m
Lisbon Humberto Delgado
Sat 4/17
1:00 pm-9:43 am
2 stops51h 43m
$787
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Wed 1/6
8:40 am-10:00 pm
2 stops30h 20m
Porto
Wed 1/20
11:15 am-8:17 pm
2 stops40h 02m
$789
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Wed 1/6
8:40 am-10:00 pm
2 stops30h 20m
Porto
Thu 1/14
5:00 am-4:49 pm
2 stops18h 49m
$789
BoiseLisbon
BOI Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado
BOILIS
Boise Air Term. Gowen Fld
Sat 12/5
5:35 pm-1:30 pm
2 stops36h 55m
Lisbon Humberto Delgado
Sat 12/12
12:25 pm-11:08 am
2 stops53h 43m
$807
Showing 1-10 of 20 resultsSorted by cheapest first
Best time to book a flight from Boise to Portugal
Have a flexible travel schedule? Discover the best time to fly to Portugal from Boise with our price prediction graph.
BOI-LIS
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.
Cheapflights Insights
Everything you need to know about your flight from Boise to Portugal
BOI-PT0
BOI-LIS
BOI-OPO
No data available for this route at this time. Please check back soon.
Reviews of airlines servicing Portugal
Get insights into the airlines that provide service to Portugal. 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 Portugal. Reviews last updated October 22, 2026.
Get a feel of what it's like to fly with Delta and United Airlines from Boise to Portugal by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Overall
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Overall
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Related info for your journey
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Top 2 airlines flying from Boise to Portugal
Discover the top 2 airlines that operate flights from Boise to Portugal. 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 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$549 | Average$853 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$737 | Average$1,050 | FlexibilityNo cancel fee | On-time69% |