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$443+ Cheap flights from Montana to Portugal

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/17. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — LIS
Nov 21 — Nov 281
Fri 11/21
Fri 11/28
1 adult, Economy
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Cheap flight deals from Montana to Portugal

Keep the following information in mind while searching for Montana to Portugal flight deals. Data was last updated October 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$543
(United Airlines)

One-way from

$443
(Delta)

Popular in

May

Cheapest in

November

Average price

$859
Provider with most accurate pricing for Bozeman Gallatin Field-Lisbon Humberto Delgado flight deals.
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Provider most trusted by Cheapflights users for Bozeman Gallatin Field-Lisbon Humberto Delgado flights.
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From Montana to Portugal
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One-way flight from Montana to Portugal
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Highest demand for flights based on searches. 18% potential increase in price ($213 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($36 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Montana to Portugal

Cheapest flights from Montana to Portugal
Explore the most affordable flight options available from Montana to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 22, 2025.

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.
Fri 12/56:30 amBZN - LIS
2 stops20h 45mUnited Airlines
Fri 12/1211:20 amLIS - BZN
2 stops41h 19mUnited Airlines
Deal found 10/21$543
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/37:25 amBZN - LIS
2 stops24h 45mDelta
Sun 12/75:00 amLIS - BZN
2 stops24h 26mDelta
Deal found 10/21$549
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.
Wed 10/296:20 amMSO - LIS
2 stops21h 55mUnited Airlines
Sat 11/85:00 amLIS - MSO
2 stops39h 33mUnited Airlines
Deal found 10/19$552
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.
Tue 10/286:35 amBZN - LIS
2 stops20h 45mUnited Airlines
Fri 11/75:00 amLIS - BZN
2 stops37h 43mUnited Airlines
Deal found 10/21$563
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.
Wed 10/291:31 pmMSO - LIS
2 stops22h 09mMultiple Airlines
Sat 11/810:45 amLIS - MSO
2 stops32h 34mMultiple Airlines
Deal found 10/21$624
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.
Wed 11/128:00 amMSO - LIS
2 stops20h 20mDelta
Sun 11/1612:20 pmLIS - MSO
2 stops42h 59mDelta
Deal found 10/20$634
This Air France 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/128:00 amMSO - LIS
2 stops17h 00mAir France
Sun 11/164:10 pmLIS - MSO
2 stops32h 24mAir France
Deal found 10/21$676
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 11/112:45 pmBZN - LIS
2 stops39h 30mUnited Airlines
Sat 11/155:00 amLIS - BZN
2 stops23h 40mUnited Airlines
Deal found 10/20$695
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.
Tue 12/167:45 amMSO - LIS
2 stops18h 15mDelta
Tue 12/3010:00 amLIS - MSO
2 stops21h 33mDelta
Deal found 10/20$910
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.
Thu 11/206:20 amMSO - LIS
2 stops18h 50mUnited Airlines
Thu 11/2710:55 amLIS - MSO
2 stops33h 38mUnited Airlines
Deal found 10/21$920
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.
Tue 12/166:15 amMSO - LIS
2 stops18h 55mUnited Airlines
Tue 12/305:00 amLIS - MSO
2 stops23h 41mUnited Airlines
Deal found 10/21$1,223
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/134:22 pmMSO - LIS
2 stops18h 33mMultiple Airlines
Sat 1/310:40 amLIS - MSO
2 stops33h 08mMultiple Airlines
Deal found 10/20$2,003

Cheapflights Fare Finder

 
Customize your flight search to find flights from Montana 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 2,558,603 searches. Data last updated October 22, 2025.
Use the filters below to find and compare flights from Montana to Portugal that are best for you.

Fly from

Montana

Fly to

Portugal

Route

Depart

Return

Price

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Fri 12/5

6:30 am-10:15 am

2 stops20h 45m

Lisbon Humberto Delgado

Fri 12/12

11:20 am-9:39 pm

2 stops41h 19m

$543

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Tue 2/24

8:00 am-11:20 am

2 stops20h 20m

Lisbon Humberto Delgado

Tue 3/10

5:00 pm-5:27 pm

2 stops30h 27m

$549

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Wed 12/3

2:36 pm-8:55 am

2 stops35h 19m

Lisbon Humberto Delgado

Sun 12/7

11:25 am-11:37 pm

2 stops43h 12m

$550

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Thu 12/4

7:25 am-8:55 am

2 stops18h 30m

Lisbon Humberto Delgado

Thu 12/11

11:25 am-10:26 pm

2 stops42h 01m

$550

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Tue 2/24

6:15 am-10:15 am

2 stops21h 00m

Lisbon Humberto Delgado

Tue 3/10

5:00 am-9:29 pm

3 stops22h 29m

$555

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Wed 11/12

8:00 am-11:20 am

2 stops20h 20m

Lisbon Humberto Delgado

Sun 11/16

12:20 pm-12:19 am

2 stops42h 59m

$634

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Tue 4/7

10:41 am-9:20 am

2 stops39h 39m

Lisbon Humberto Delgado

Thu 4/16

11:25 am-11:33 am

2 stops31h 08m

$648

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Mon 3/30

8:10 am-10:30 am

2 stops19h 20m

Lisbon Humberto Delgado

Wed 4/8

12:50 pm-9:07 pm

2 stops39h 17m

$653

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Sun 3/29

12:50 pm-10:45 am

1 stop14h 55m

Lisbon Humberto Delgado

Wed 4/8

5:00 am-12:04 am

2 stops26h 04m

$655

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Fri 4/3

5:32 pm-1:35 pm

2 stops37h 03m

Lisbon Humberto Delgado

Fri 4/17

12:50 pm-4:10 pm

2 stops34h 20m

$665

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/20

Showing 1-10 of 22 results
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Best time to book a flight from Montana to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Montana with our price prediction graph.
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 Montana to Portugal

What is the cheapest month to book a flight from Montana to Portugal?

Currently, November is the cheapest month in which you can book a flight from Montana to Portugal (average of $551). Flying from Montana to Portugal in September is currently the most expensive (average of $924). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Montana to Portugal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Montana to Portugal?

    For as low as $676, United Airlines can have you in Portugal from Montana in 17h. Montana and Portugal are separated by a distance of 4926 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Montana to Portugal one-way?

    The cheapest airline one-way is Air France, with whom users have recently found tickets for as low as $443. However, be on the lookout for offers from Delta and United Airlines, as they are both options that can get you from Montana to Portugal for a low price.

  • Can I find deals for flights from Montana to Portugal that include hotel bookings?

    Yes. In addition to deals on Montana to Portugal flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Montana to Portugal?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Montana to Portugal.

  • Can I find deals for business class flights from Montana to Portugal?

    Yes. Cheapflights offers flight deals from Montana to Portugal by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Montana to Portugal?

    Currently, November is the cheapest month in which you can book a flight from Montana to Portugal (average of $551). Flying from Montana to Portugal in September is currently the most expensive (average of $924). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Montana to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Montana to Portugal

Discover the top 2 airlines that operate flights from Montana 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 2,558,603 searches. Data last updated October 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$551Average$953FlexibilityNo cancel feeOn-time69%
DeltaCheapest$618Average$844FlexibilityNo cancel feeOn-timeN/A

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