How long is the flight from Montana to Portugal?

Average flight duration from Montana to Portugal depends on which airport you fly into and out of. Flying from Bozeman to Lisbon is 18h 52m on average, while flying from Missoula to Lisbon is 18h 55m on average. Lisbon is the most popular airport in Portugal.

What is the cheapest airline that flies from Montana to Portugal?

United Airlines is the most popular carrier operating from Montana to Portugal

When did momondo last update prices for flights from Montana to Portugal?

Prices for flights from Montana to Portugal are updated daily.

How many operators does momondo search for flights from Montana to Portugal?

There are 2 operators available for flights from Montana to Portugal as of September 2025.

How old do you have to be to fly from Montana to Portugal?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Montana to Portugal.

What documentation or ID do you need to fly to Portugal?

The travel and health documents you'll need for your trip to Portugal may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Portugal. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$447 Cheap Flights from Montana to Portugal in 2025/26

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Find the cheapest flights from Montana to Portugal

Round-trip

One-way

Cheap round-trip flights

6:00 am - 8:10 amMSO-LIS

19h 10m2 stops

11:20 am - 9:51 pmLIS-MSO

41h 31m2 stops

$539United Airlines

Find Deal

Fri, Jan 9 - Mon, Jan 19

6:30 am - 8:55 amBZN-LIS

19h 25m2 stops

11:20 am - 3:31 pmLIS-BZN

35h 11m2 stops

$545United Airlines

Find Deal

Wed, Dec 3 - Fri, Dec 12

12:50 pm - 8:55 amBZN-LIS

37h 05m2 stops

11:20 am - 11:48 amLIS-BZN

31h 28m2 stops

$551United Airlines

Find Deal

Tue, Dec 2 - Fri, Dec 12

10:49 am - 1:20 pmBZN-LIS

19h 31m2 stops

3:55 pm - 9:39 pmLIS-BZN

36h 44m2 stops

$696Lufthansa

Find Deal

Sat, Dec 6 - Fri, Dec 12

10:49 am - 1:20 pmBZN-LIS

19h 31m2 stops

5:00 am - 10:29 pmLIS-BZN

48h 29m2 stops

$785Lufthansa

Find Deal

Fri, Dec 5 - Wed, Dec 17

6:37 am - 9:05 amMSO-LIS

19h 28m2 stops

11:05 am - 1:01 pmLIS-MSO

31h 56m2 stops

$788Multiple Airlines

Find Deal

Fri, Oct 24 - Fri, Oct 31

1:58 pm - 2:50 pmBZN-LIS

18h 52m2 stops

7:05 am - 10:30 pmLIS-BZN

21h 25m2 stops

$816Multiple Airlines

Find Deal

Fri, Mar 13 - Fri, Mar 27

2:58 pm - 5:45 pmBZN-LIS

19h 47m2 stops

6:40 pm - 11:17 pmLIS-BZN

35h 37m2 stops

$870British Airways

Find Deal

Sun, Dec 7 - Sat, Dec 13

1:58 pm - 2:50 pmBZN-LIS

18h 52m2 stops

6:45 pm - 12:08 pmLIS-BZN

23h 23m2 stops

$1,009American Airlines

Find Deal

Sat, Mar 14 - Fri, Mar 20

3:04 pm - 11:10 pmBZN-LIS

49h 06m2 stops

6:40 pm - 10:37 pmLIS-BZN

34h 57m2 stops

$1,061British Airways

Find Deal

Fri, Oct 10 - Thu, Oct 23

United Airlines flights from Montana to Portugal

Our best United Airlines deals on Montana to Portugal flight tickets

United Airlines

Jan 9

MSO6:00 amMissoula Johnson-Bell Field

19h 10m

2 stops

LIS8:10 amLisbon Humberto Delgado

Jan 19

LIS11:20 amLisbon Humberto Delgado

41h 31m

2 stops

MSO9:51 pmMissoula Johnson-Bell Field

$539

Find similar

United Airlines

Dec 3

BZN6:30 amBozeman Gallatin Field

19h 25m

2 stops

LIS8:55 amLisbon Humberto Delgado

Dec 12

LIS11:20 amLisbon Humberto Delgado

35h 11m

2 stops

BZN3:31 pmBozeman Gallatin Field

$545

Find similar

United Airlines

Dec 2

BZN12:50 pmBozeman Gallatin Field

37h 05m

2 stops

LIS8:55 amLisbon Humberto Delgado

Dec 12

LIS11:20 amLisbon Humberto Delgado

31h 28m

2 stops

BZN11:48 amBozeman Gallatin Field

$551

Find similar

Lufthansa flights from Montana to Portugal

Our best Lufthansa deals on Montana to Portugal flight tickets

Lufthansa

Dec 6

BZN10:49 amBozeman Gallatin Field

19h 31m

2 stops

LIS1:20 pmLisbon Humberto Delgado

Dec 12

LIS3:55 pmLisbon Humberto Delgado

36h 44m

2 stops

BZN9:39 pmBozeman Gallatin Field

$696

Find similar

Lufthansa

Dec 5

BZN10:49 amBozeman Gallatin Field

19h 31m

2 stops

LIS1:20 pmLisbon Humberto Delgado

Dec 17

LIS5:00 amLisbon Humberto Delgado

48h 29m

2 stops

BZN10:29 pmBozeman Gallatin Field

$785

Find similar

Lufthansa

Nov 8

BZN2:43 pmBozeman Gallatin Field

25h 07m

2 stops

LIS10:50 pmLisbon Humberto Delgado

Nov 15

LIS5:00 amLisbon Humberto Delgado

23h 40m

2 stops

BZN9:40 pmBozeman Gallatin Field

$786

Find similar

Fly from

Fly to

Route

Depart

Return

Price

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Fri 1/9

6:00 am-8:10 am

2 stops19h 10m

Lisbon Humberto Delgado

Mon 1/19

11:20 am-9:51 pm

2 stops41h 31m

$539

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Wed 12/3

6:30 am-8:55 am

2 stops19h 25m

Lisbon Humberto Delgado

Fri 12/12

11:20 am-3:31 pm

2 stops35h 11m

$545

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Tue 12/2

12:50 pm-8:55 am

2 stops37h 05m

Lisbon Humberto Delgado

Fri 12/12

11:20 am-11:48 am

2 stops31h 28m

$551

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Sat 12/6

10:49 am-1:20 pm

2 stops19h 31m

Lisbon Humberto Delgado

Fri 12/12

3:55 pm-9:39 pm

2 stops36h 44m

$696

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Fri 12/5

10:49 am-1:20 pm

2 stops19h 31m

Lisbon Humberto Delgado

Wed 12/17

5:00 am-10:29 pm

2 stops48h 29m

$785

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Fri 10/24

6:37 am-9:05 am

2 stops19h 28m

Lisbon Humberto Delgado

Fri 10/31

11:05 am-1:01 pm

2 stops31h 56m

$788

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Fri 3/13

1:58 pm-2:50 pm

2 stops18h 52m

Lisbon Humberto Delgado

Fri 3/27

7:05 am-10:30 pm

2 stops21h 25m

$816

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Sun 12/7

2:58 pm-5:45 pm

2 stops19h 47m

Lisbon Humberto Delgado

Sat 12/13

6:40 pm-11:17 pm

2 stops35h 37m

$870

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Sat 3/14

1:58 pm-2:50 pm

2 stops18h 52m

Lisbon Humberto Delgado

Fri 3/20

6:45 pm-12:08 pm

2 stops23h 23m

$1,009

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Fri 10/10

3:04 pm-11:10 pm

2 stops49h 06m

Lisbon Humberto Delgado

Thu 10/23

6:40 pm-10:37 pm

2 stops34h 57m

$1,061

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first

How to get the cheapest flight ticket from Montana to Portugal

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest day to depart on your flight to Portugal?

According to our data, Wednesday is the cheapest day to fly to Portugal from Montana. The lowest ticket price found for a Wednesday departure recently was $759. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Portugal is Friday, with ticket prices averaging around $1,211.

What is the cheapest time of day to depart on your flight to Portugal?

Our most recent data shows that the best time of day to fly to Portugal is at noon. Flights from Montana to Portugal during this time can be as low as $957. In the afternoon is when there is more demand to fly to Portugal, so prices are often more expensive at around $1,188 per ticket.

Can stopping save me money on Montana to Portugal flights?

You could potentially save up to 22% on your flight if you consider stops on a Montana to Portugal flight.

Cheap Montana to Portugal flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Montana to Portugal

Direct flights	None

There are no direct flights from Montana to Portugal. There are no popular flight routes from Montana to Portugal.

Search flight deals

When did momondo last update prices for flights from Montana to Portugal?
Prices for flights from Montana to Portugal are updated daily.
How many operators does momondo search for flights from Montana to Portugal?
There are 2 operators available for flights from Montana to Portugal as of September 2025.
How old do you have to be to fly from Montana to Portugal?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Montana to Portugal.
What documentation or ID do you need to fly to Portugal?
The travel and health documents you'll need for your trip to Portugal may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Portugal. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Montana to Portugal

Compare and see reviews for airlines that fly from Montana to Portugal with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $587	Free Cancellation	Rating 7.4 8,928 reviews		Search United Airlines flights
Delta	PriceFrom $618	Free Cancellation	Rating 7.9 7,973 reviews		Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from Montana to Portugal?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Montana to Portugal. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Montana to Portugal with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Montana to Portugal flights to just show those with flexible booking policies.

How can momondo help me find flights from Montana to Portugal?

momondo helps you find the best flight between Montana and Portugal by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Montana to Portugal right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Montana to Portugal now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Portugal and let you know when they change.