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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 16 — Oct 231
Thu 10/16
Thu 10/23
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 16, 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 16, 2025.

This United Airlines deal was found by Cheapflights users on 9/15. 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 12/106:15 amMSO - LIS
2 stops18h 55mUnited Airlines
Wed 12/2411:00 amLIS - MSO
2 stops41h 41mUnited Airlines
Deal found 9/15$551
This United Airlines deal was found by Cheapflights users on 9/15. 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 12/316:00 amMSO - LIS
2 stops19h 10mUnited Airlines
Thu 1/155:00 amLIS - MSO
2 stops23h 51mUnited Airlines
Deal found 9/15$561
This United Airlines deal was found by Cheapflights users on 9/15. 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 12/106:15 amMSO - LIS
2 stops18h 55mUnited Airlines
Thu 12/2510:15 amLIS - MSO
2 stops18h 26mUnited Airlines
Deal found 9/15$568
This United Airlines deal was found by Cheapflights users on 9/15. 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 12/286:00 amMSO - LIS
2 stops34h 30mUnited Airlines
Wed 1/1411:20 amLIS - MSO
2 stops41h 31mUnited Airlines
Deal found 9/15$569
This United Airlines deal was found by Cheapflights users on 9/15. 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 12/106:15 amMSO - LIS
2 stops18h 55mUnited Airlines
Tue 12/2311:20 amLIS - MSO
2 stops41h 21mUnited Airlines
Deal found 9/15$573
This United Airlines deal was found by Cheapflights users on 9/15. 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 12/286:00 amMSO - LIS
2 stops34h 30mUnited Airlines
Thu 1/155:00 amLIS - MSO
2 stops23h 51mUnited Airlines
Deal found 9/15$579
This United Airlines deal was found by Cheapflights users on 9/15. 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 12/302:38 pmMSO - LIS
2 stops41h 12mUnited Airlines
Wed 1/1411:20 amLIS - MSO
2 stops35h 45mUnited Airlines
Deal found 9/15$580
This United Airlines deal was found by Cheapflights users on 9/15. 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 12/302:38 pmMSO - LIS
2 stops41h 12mUnited Airlines
Thu 1/155:00 amLIS - MSO
2 stops23h 51mUnited Airlines
Deal found 9/15$589
This United Airlines deal was found by Cheapflights users on 9/15. 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 12/286:00 amMSO - LIS
2 stops34h 30mUnited Airlines
Tue 1/1310:15 amLIS - MSO
2 stops18h 36mUnited Airlines
Deal found 9/15$590
This United Airlines deal was found by Cheapflights users on 9/15. 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 12/116:15 amMSO - LIS
2 stops20h 05mUnited Airlines
Wed 12/2411:00 amLIS - MSO
2 stops41h 41mUnited Airlines
Deal found 9/15$597
This United Airlines deal was found by Cheapflights users on 9/15. 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 12/302:38 pmMSO - LIS
2 stops41h 12mUnited Airlines
Tue 1/1310:15 amLIS - MSO
2 stops18h 36mUnited Airlines
Deal found 9/15$600
This United Airlines deal was found by Cheapflights users on 9/15. 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 12/316:00 amMSO - LIS
2 stops19h 10mUnited Airlines
Mon 1/1211:20 amLIS - MSO
2 stops33h 15mUnited Airlines
Deal found 9/15$601

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 16, 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 1/13

6:00 am-9:20 am

2 stops20h 20m

Lisbon Humberto Delgado

Tue 1/27

5:00 am-9:51 pm

2 stops23h 51m

$556

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Mon 1/5

5:15 pm-9:20 am

2 stops57h 05m

Lisbon Humberto Delgado

Fri 1/23

11:20 am-1:35 pm

2 stops33h 15m

$559

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Mon 1/5

5:15 pm-9:20 am

2 stops57h 05m

Lisbon Humberto Delgado

Wed 1/21

11:20 am-1:35 pm

2 stops33h 15m

$559

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Sun 12/28

6:00 am-11:30 pm

2 stops34h 30m

Lisbon Humberto Delgado

Wed 1/14

11:20 am-9:51 pm

2 stops41h 31m

$569

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Wed 12/31

6:00 am-10:15 am

2 stops21h 15m

Lisbon Humberto Delgado

Thu 1/15

5:00 am-1:35 pm

3 stops39h 35m

$573

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Sun 12/28

6:00 am-11:30 pm

2 stops34h 30m

Lisbon Humberto Delgado

Tue 1/13

10:15 am-9:51 pm

2 stops18h 36m

$590

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Thu 1/8

6:00 am-8:10 am

2 stops19h 10m

Lisbon Humberto Delgado

Wed 1/21

11:20 am-1:35 pm

2 stops33h 15m

$601

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Sun 1/11

6:00 am-8:10 am

2 stops19h 10m

Lisbon Humberto Delgado

Mon 1/26

11:20 am-1:35 pm

2 stops33h 15m

$601

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Thu 1/8

6:00 am-8:10 am

2 stops19h 10m

Lisbon Humberto Delgado

Fri 1/23

11:20 am-1:35 pm

2 stops33h 15m

$601

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

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, 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.

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

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $383. However, be on the lookout for offers from Air France and Lufthansa, 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, 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 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$587Average$1,013FlexibilityNo cancel feeOn-time69%
DeltaCheapest$618Average$884FlexibilityNo cancel feeOn-timeN/A

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