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Portugal

$258+ 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 4/26. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — LIS
Feb 11 — Feb 181
Wed 2/11
Wed 2/18
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 January 12, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$476
(KLM)

One-way from

$258
(United Airlines)

Popular in

June

Cheapest in

February

Average price

$666
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. 22% potential increase in price ($277 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 12, 2026.

This KLM deal was found by Cheapflights users on 1/11. 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.
Mon 3/235:58 amBZN - LIS
2 stops20h 02mMultiple Airlines
Sat 4/258:55 amLIS - BZN
2 stops20h 45mMultiple Airlines
Deal found 1/11$476
This Delta deal was found by Cheapflights users on 1/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/811:50 amBZN - LIS
2 stops23h 55mDelta
Wed 4/1510:00 amLIS - BZN
2 stops21h 14mDelta
Deal found 1/11$493
This United Airlines deal was found by Cheapflights users on 1/11. 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.
Wed 4/84:19 pmBZN - LIS
2 stops35h 11mUnited Airlines
Wed 4/151:00 pmLIS - BZN
2 stops31h 34mUnited Airlines
Deal found 1/11$496
This American Airlines deal was found by Cheapflights users on 1/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/221:42 pmBZN - LIS
2 stops25h 13mAmerican Airlines
Fri 2/68:20 amLIS - BZN
2 stops20h 42mAmerican Airlines
Deal found 1/11$502
This United Airlines deal was found by Cheapflights users on 1/9. 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 3/164:30 pmBZN - LIS
2 stops25h 00mUnited Airlines
Tue 3/245:00 amLIS - BZN
2 stops37h 14mUnited Airlines
Deal found 1/9$503
This United Airlines deal was found by Cheapflights users on 1/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1012:30 pmBZN - LIS
3 stops36h 40mUnited Airlines
Sat 11/215:00 amLIS - BZN
2 stops35h 47mUnited Airlines
Deal found 1/10$510
This Expedia deal was found by Cheapflights users on 1/10. 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.
Wed 4/82:40 pmBZN - LIS
2 stops24h 35mLufthansa
Wed 4/157:25 amLIS - BZN
2 stops21h 07mLufthansa
Deal found 1/10$515
This United Airlines deal was found by Cheapflights users on 1/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/236:00 amMSO - LIS
2 stops19h 10mUnited Airlines
Tue 1/276:10 amLIS - MSO
2 stops40h 55mUnited Airlines
Deal found 1/10$523
This United Airlines deal was found by Cheapflights users on 1/11. 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.
Fri 4/1712:39 pmBZN - LIS
2 stops26h 16mUnited Airlines
Fri 4/2411:25 amLIS - BZN
2 stops33h 09mUnited Airlines
Deal found 1/11$530
This United Airlines deal was found by Cheapflights users on 1/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/168:00 amBZN - LIS
2 stops24h 50mUnited Airlines
Wed 3/2511:55 amLIS - BZN
3 stops33h 33mUnited Airlines
Deal found 1/10$532
This Air France deal was found by Cheapflights users on 1/10. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/216:00 amBZN - LIS
2 stops26h 10mAir France
Sun 2/15:30 amLIS - BZN
2 stops23h 57mAir France
Deal found 1/10$537
This United Airlines deal was found by Cheapflights users on 1/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/2212:05 pmBZN - LIS
1 stop13h 05mUnited Airlines
Fri 2/610:55 amLIS - BZN
2 stops41h 38mUnited Airlines
Deal found 1/10$542

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 January 12, 2026.
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

Mon 3/23

5:58 am-8:00 am

2 stops20h 02m

Lisbon Humberto Delgado

Sat 4/25

8:55 am-10:40 pm

2 stops20h 45m

$476

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Wed 4/8

11:50 am-6:45 pm

2 stops23h 55m

Lisbon Humberto Delgado

Wed 4/15

10:00 am-12:14 am

2 stops21h 14m

$493

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Wed 4/8

4:19 pm-10:30 am

2 stops35h 11m

Lisbon Humberto Delgado

Wed 4/15

1:00 pm-1:34 pm

2 stops31h 34m

$496

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Wed 1/21

2:13 pm-2:50 pm

2 stops17h 37m

Lisbon Humberto Delgado

Sat 1/31

6:30 am-10:57 pm

2 stops23h 27m

$502

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Mon 3/16

4:30 pm-11:30 pm

2 stops25h 00m

Lisbon Humberto Delgado

Tue 3/24

5:00 am-12:14 pm

2 stops37h 14m

$503

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Fri 1/23

6:00 am-8:10 am

2 stops19h 10m

Lisbon Humberto Delgado

Tue 1/27

6:10 am-4:05 pm

2 stops40h 55m

$523

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Fri 4/17

12:39 pm-9:55 pm

2 stops26h 16m

Lisbon Humberto Delgado

Fri 4/24

11:25 am-1:34 pm

2 stops33h 09m

$530

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Mon 3/16

8:00 am-2:50 pm

2 stops24h 50m

Lisbon Humberto Delgado

Wed 3/25

11:55 am-11:40 am

2 stops29h 45m

$532

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Thu 1/22

12:05 pm-8:10 am

1 stop13h 05m

Lisbon Humberto Delgado

Fri 2/6

10:55 am-9:33 pm

2 stops41h 38m

$542

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Fri 1/23

12:05 pm-8:10 am

1 stop13h 05m

Lisbon Humberto Delgado

Tue 1/27

5:00 am-2:42 pm

2 stops40h 42m

$545

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/11

Showing 1-10 of 18 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, March is the cheapest month in which you can book a flight from Montana to Portugal (average of $499). 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 $502, Delta can have you in Portugal from Montana in 17h 37m. 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, March is the cheapest month in which you can book a flight from Montana to Portugal (average of $499). 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

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 January 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$499Average$917FlexibilityNo cancel feeOn-time69%
DeltaCheapest$600Average$943FlexibilityNo cancel feeOn-timeN/A

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