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Portugal

$374+ 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 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — LIS
Oct 14 — Oct 211
Tue 10/14
Tue 10/21
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 September 14, 2025.

Round-trip from

$551
(United Airlines)

One-way from

$374
(Kiwi.com)

Popular in

May

Cheapest in

November

Average price

$1,187
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 ($227 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 14, 2025.

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.
Tue 10/285:10 pmMSO - LIS
2 stops24h 20mUnited Airlines
Tue 11/45:00 amLIS - MSO
2 stops23h 47mUnited Airlines
Deal found 9/13$579
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.
Wed 12/36:15 amMSO - LIS
2 stops18h 55mUnited Airlines
Wed 12/1711:00 amLIS - MSO
2 stops41h 41mUnited Airlines
Deal found 9/13$606
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.
Wed 10/296:20 amMSO - LIS
2 stops21h 55mUnited Airlines
Wed 11/55:00 amLIS - MSO
2 stops23h 47mUnited Airlines
Deal found 9/14$611
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.
Wed 12/36:30 amBZN - LIS
2 stops18h 40mUnited Airlines
Sun 12/710:50 amLIS - BZN
2 stops35h 41mUnited Airlines
Deal found 9/13$618
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.
Sat 11/112:45 pmBZN - LIS
2 stops39h 30mUnited Airlines
Sat 11/155:00 amLIS - BZN
2 stops38h 31mUnited Airlines
Deal found 9/13$620
This Virgin Atlantic 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/36:00 amBZN - LIS
2 stops19h 00mVirgin Atlantic
Sun 12/711:15 amLIS - BZN
2 stops20h 02mVirgin Atlantic
Deal found 9/14$626
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.
Wed 10/291:31 pmMSO - LIS
2 stops22h 09mMultiple Airlines
Sat 11/810:30 amLIS - MSO
2 stops32h 49mMultiple Airlines
Deal found 9/12$648
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.
Wed 11/125:25 amMSO - LIS
2 stops19h 35mDelta
Sun 11/1612:20 pmLIS - MSO
2 stops36h 18mDelta
Deal found 9/12$650
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.
Wed 10/111:10 amBZN - LIS
1 stop14h 10mUnited Airlines
Fri 10/2412:20 pmLIS - BZN
2 stops32h 02mUnited Airlines
Deal found 9/14$870
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.
Tue 12/166:15 amMSO - LIS
2 stops21h 00mUnited Airlines
Tue 12/3011:20 amLIS - MSO
2 stops33h 16mUnited Airlines
Deal found 9/13$959
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/36:29 amMSO - LIS
2 stops19h 36mMultiple Airlines
Wed 12/1711:25 amLIS - MSO
1 stop32h 23mMultiple Airlines
Deal found 9/13$1,120
This TAP AIR PORTUGAL 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/111:10 amBZN - LIS
1 stop16h 40mMultiple Airlines
Fri 10/245:55 pmLIS - BZN
1 stop23h 04mMultiple Airlines
Deal found 9/14$1,835

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 September 14, 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

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Wed 1/7

6:00 am-8:10 am

2 stops19h 10m

Lisbon Humberto Delgado

Wed 1/21

11:20 am-4:05 pm

2 stops35h 45m

$551

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Tue 10/28

5:10 pm-11:30 pm

2 stops24h 20m

Lisbon Humberto Delgado

Tue 11/4

5:00 am-9:47 pm

2 stops23h 47m

$579

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Wed 12/3

6:15 am-8:10 am

2 stops18h 55m

Lisbon Humberto Delgado

Wed 12/17

11:00 am-9:41 pm

2 stops41h 41m

$606

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Wed 10/29

6:20 am-10:15 am

2 stops21h 55m

Lisbon Humberto Delgado

Wed 11/5

5:00 am-9:47 pm

2 stops23h 47m

$611

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Wed 12/3

6:30 am-8:10 am

2 stops18h 40m

Lisbon Humberto Delgado

Sun 12/7

10:50 am-3:31 pm

2 stops35h 41m

$618

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Wed 12/3

6:00 am-8:00 am

2 stops19h 00m

Lisbon Humberto Delgado

Sun 12/7

11:15 am-12:17 am

2 stops20h 02m

$626

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Wed 10/29

1:31 pm-5:40 pm

2 stops22h 09m

Lisbon Humberto Delgado

Sat 11/8

10:30 am-12:19 pm

2 stops32h 49m

$648

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Wed 11/12

5:25 am-8:00 am

2 stops19h 35m

Lisbon Humberto Delgado

Sun 11/16

12:20 pm-5:38 pm

2 stops36h 18m

$650

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Fri 3/13

4:22 pm-9:20 am

2 stops58h 58m

Lisbon Humberto Delgado

Sun 3/22

11:55 am-2:35 pm

2 stops32h 40m

$797

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Wed 10/1

11:10 am-8:20 am

1 stop14h 10m

Lisbon Humberto Delgado

Fri 10/24

12:20 pm-1:22 pm

2 stops32h 02m

$870

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 14 results
1
2

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, January is the cheapest month in which you can book a flight from Montana to Portugal (average of $612). Flying from Montana to Portugal in June is currently the most expensive (average of $1,127). 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 $626, United Airlines can have you in Portugal from Montana in 19h. Montana and Portugal are separated by a distance of 4860 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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, January is the cheapest month in which you can book a flight from Montana to Portugal (average of $612). Flying from Montana to Portugal in June is currently the most expensive (average of $1,127). 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

Browse thousands of different options on Cheapflights for your next trip

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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 September 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$587Average$1,013FlexibilityNo cancel feeOn-time69%
DeltaCheapest$618Average$884FlexibilityNo cancel feeOn-timeN/A

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