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$399+ 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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — LIS
dic. 5 — dic. 121
vie. 12/5
vie. 12/12
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 noviembre 5, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$489
(United Airlines)

One-way from

$399
(United Airlines)

Popular in

May

Cheapest in

November

Average price

$669
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 November 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 noviembre 5, 2025.

This United Airlines deal was found by Cheapflights users on 11/4. 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.
mié. 12/32:42 pmBZN - LIS
2 stops35h 38mUnited Airlines
dom. 12/710:50 amLIS - BZN
2 stops33h 45mUnited Airlines
Deal found 11/4$489
This United Airlines deal was found by Cheapflights users on 11/4. 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.
mié. 12/32:35 pmMSO - LIS
2 stops35h 45mUnited Airlines
dom. 12/710:50 amLIS - MSO
2 stops41h 28mUnited Airlines
Deal found 11/4$489
This Delta deal was found by Cheapflights users on 11/3. 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.
mié. 12/35:30 amBZN - LIS
2 stops19h 30mDelta
dom. 12/711:25 amLIS - BZN
2 stops43h 12mDelta
Deal found 11/3$501
This Delta deal was found by Cheapflights users on 11/3. 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.
mié. 12/37:45 amMSO - LIS
2 stops17h 15mDelta
dom. 12/711:25 amLIS - MSO
2 stops44h 11mDelta
Deal found 11/3$501
This United deal was found by Cheapflights users on 11/3. 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.
mié. 12/35:20 pmMSO - LIS
2 stops31h 50mMultiple Airlines
dom. 12/710:50 amLIS - MSO
2 stops41h 28mMultiple Airlines
Deal found 11/3$537
This United Airlines deal was found by Cheapflights users on 11/3. 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.
mié. 11/196:20 amMSO - LIS
2 stops18h 50mUnited Airlines
mié. 11/265:00 amLIS - MSO
2 stops23h 47mUnited Airlines
Deal found 11/3$640
This United Airlines deal was found by Cheapflights users on 11/3. 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.
jue. 11/206:20 amMSO - LIS
2 stops18h 50mUnited Airlines
mié. 11/265:00 amLIS - MSO
2 stops23h 47mUnited Airlines
Deal found 11/3$880
This United Airlines deal was found by Cheapflights users on 11/3. 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.
sáb. 11/225:10 pmMSO - LIS
2 stops56h 35mUnited Airlines
jue. 11/276:10 amLIS - MSO
2 stops38h 23mUnited Airlines
Deal found 11/3$1,003
This United Airlines deal was found by Cheapflights users on 11/4. 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.
mar. 12/166:15 amMSO - LIS
2 stops21h 00mUnited Airlines
mar. 12/305:00 amLIS - MSO
2 stops23h 41mUnited Airlines
Deal found 11/4$1,122
This United Airlines deal was found by Cheapflights users on 11/3. 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.
mié. 11/196:20 amMSO - LIS
2 stops20h 55mUnited Airlines
vie. 11/285:00 amLIS - MSO
2 stops23h 47mUnited Airlines
Deal found 11/3$1,177

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 noviembre 5, 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

jue. 1/22

6:15 am-9:20 am

2 stops20h 05m

Lisbon Humberto Delgado

dom. 2/1

10:50 am-9:33 pm

2 stops41h 43m

$489

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

mié. 12/3

2:42 pm-9:20 am

2 stops35h 38m

Lisbon Humberto Delgado

dom. 12/7

10:50 am-1:35 pm

2 stops33h 45m

$489

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

mié. 12/3

2:35 pm-9:20 am

2 stops35h 45m

Lisbon Humberto Delgado

dom. 12/7

10:50 am-9:18 pm

2 stops41h 28m

$489

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

vie. 1/9

6:00 am-8:10 am

2 stops19h 10m

Lisbon Humberto Delgado

jue. 1/22

5:00 am-9:51 pm

2 stops23h 51m

$492

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

lun. 1/12

6:00 am-9:20 am

2 stops20h 20m

Lisbon Humberto Delgado

dom. 1/25

10:50 am-1:35 pm

2 stops33h 45m

$496

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

vie. 1/9

6:00 am-9:20 am

2 stops20h 20m

Lisbon Humberto Delgado

mié. 1/21

11:20 am-1:35 pm

2 stops33h 15m

$496

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

mié. 1/7

5:15 pm-9:20 am

2 stops57h 05m

Lisbon Humberto Delgado

lun. 1/19

11:20 am-1:35 pm

2 stops33h 15m

$496

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

sáb. 1/10

2:37 pm-9:20 am

2 stops35h 43m

Lisbon Humberto Delgado

vie. 1/23

11:20 am-1:35 pm

2 stops33h 15m

$496

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

mié. 1/7

5:15 pm-9:20 am

2 stops57h 05m

Lisbon Humberto Delgado

dom. 1/25

10:50 am-1:35 pm

2 stops33h 45m

$496

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

vie. 1/9

6:00 am-9:20 am

2 stops20h 20m

Lisbon Humberto Delgado

vie. 1/23

11:20 am-1:35 pm

2 stops33h 15m

$496

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/5

Showing 1-10 of 29 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 $501, United Airlines can have you in Portugal from Montana in 19h 30m. 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, 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 3 airlines flying from Montana to Portugal

Discover the top 3 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 noviembre 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$551Average$951FlexibilityNo cancel feeOn-time69%
DeltaCheapest$618Average$893FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$745Average$930FlexibilityNo cancel feeOn-time75%

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