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Cheap flights from Montana to Portugal from $374

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Montana to Portugal departing on 7/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Montana to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
3:15 pm - 5:50 pm
BZN
-
LIS
19h 35m
2 stops
Delta Logo
5:00 am - 10:40 pm
LIS
-
BZN
24h 40m
2 stops
$720Delta
Sat, Apr 25 - Sat, May 2
KLM Logo
6:30 pm - 6:45 pm
BZN
-
LIS
17h 15m
2 stops
KLM Logo
5:00 am - 8:11 pm
LIS
-
BZN
22h 11m
2 stops
$739KLM
Wed, Apr 8 - Wed, Apr 15
KLM Logo
6:30 pm - 6:45 pm
BZN
-
LIS
17h 15m
2 stops
KLM Logo
5:00 am - 5:54 pm
LIS
-
BZN
19h 54m
2 stops
$740KLM
Wed, Apr 8 - Wed, Apr 15
American Airlines Logo
1:43 pm - 5:55 pm
BZN
-
LIS
21h 12m
2 stops
American Airlines Logo
11:05 am - 12:53 pm
LIS
-
BZN
32h 48m
2 stops
$745American Airlines
Wed, Apr 8 - Wed, Apr 15
American Airlines Logo
1:43 pm - 5:55 pm
BZN
-
LIS
21h 12m
2 stops
American Airlines Logo
11:05 am - 12:53 pm
LIS
-
BZN
32h 48m
2 stops
$795American Airlines
Wed, Apr 8 - Wed, Apr 15
Multiple Airlines Logo
1:40 pm - 6:45 pm
MSO
-
LIS
22h 05m
2 stops
Multiple Airlines Logo
5:35 am - 11:40 pm
LIS
-
MSO
25h 05m
2 stops
$895Multiple Airlines
Mon, May 4 - Sun, May 10
Air France Logo
3:30 pm - 10:25 pm
MSO
-
LIS
23h 55m
2 stops
Air France Logo
9:50 am - 11:40 pm
LIS
-
MSO
20h 50m
2 stops
$905Air France
Thu, May 7 - Thu, May 14
United Airlines Logo
4:19 pm - 11:00 am
MSO
-
LIS
59h 41m
2 stops
United Airlines Logo
11:25 am - 11:34 am
LIS
-
MSO
31h 09m
2 stops
$941United Airlines
Fri, Sep 4 - Tue, Sep 8
United Airlines Logo
5:32 pm - 11:00 am
MSO
-
LIS
58h 28m
2 stops
United Airlines Logo
11:25 am - 1:27 pm
LIS
-
MSO
33h 02m
2 stops
$991United Airlines
Fri, Sep 4 - Tue, Sep 8
Multiple Airlines Logo
1:18 pm - 2:35 pm
MSO
-
LIS
18h 17m
2 stops
Multiple Airlines Logo
5:35 am - 11:44 pm
LIS
-
MSO
25h 09m
2 stops
$1,245Multiple Airlines
Mon, Jun 8 - Sat, Jun 20

Delta flights from Montana to Portugal

Our best Delta deals on Montana to Portugal flight tickets
Delta
Apr 25
BZN3:15 pmBozeman Gallatin Field
19h 35m
2 stops
LIS5:50 pmLisbon Humberto Delgado
May 2
LIS5:00 amLisbon Humberto Delgado
24h 40m
2 stops
BZN10:40 pmBozeman Gallatin Field
$720
Delta
May 12
BZN4:02 pmBozeman Gallatin Field
18h 48m
2 stops
LIS5:50 pmLisbon Humberto Delgado
May 19
LIS5:00 amLisbon Humberto Delgado
25h 21m
2 stops
BZN11:21 pmBozeman Gallatin Field
$879
Delta
May 16
BZN4:02 pmBozeman Gallatin Field
18h 48m
2 stops
LIS5:50 pmLisbon Humberto Delgado
May 24
LIS5:00 amLisbon Humberto Delgado
24h 02m
2 stops
BZN10:02 pmBozeman Gallatin Field
$949

United Airlines flights from Montana to Portugal

Our best United Airlines deals on Montana to Portugal flight tickets
United Airlines
Apr 25
BZN2:40 pmBozeman Gallatin Field
36h 50m
3 stops
LIS10:30 amLisbon Humberto Delgado
May 2
LIS5:05 amLisbon Humberto Delgado
48h 34m
2 stops
BZN10:39 pmBozeman Gallatin Field
$921
United Airlines
Sep 4
MSO4:19 pmMissoula Johnson-Bell Field
59h 41m
2 stops
LIS11:00 amLisbon Humberto Delgado
Sep 8
LIS11:25 amLisbon Humberto Delgado
31h 09m
2 stops
MSO11:34 amMissoula Johnson-Bell Field
$941
United Airlines
Sep 4
MSO5:32 pmMissoula Johnson-Bell Field
58h 28m
2 stops
LIS11:00 amLisbon Humberto Delgado
Sep 8
LIS11:25 amLisbon Humberto Delgado
33h 02m
2 stops
MSO1:27 pmMissoula Johnson-Bell Field
$991

momondo 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, momondo users made 832,500 searches. Data last updated March 28, 2026.
Use the filters below to find and compare flights from Montana to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Sat 4/25

3:15 pm-5:50 pm

2 stops19h 35m

Lisbon Humberto Delgado

Sat 5/2

5:00 am-10:40 pm

2 stops24h 40m

$720

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Wed 4/8

6:30 pm-6:45 pm

2 stops17h 15m

Lisbon Humberto Delgado

Wed 4/15

5:00 am-8:11 pm

2 stops22h 11m

$739
Quickest round-trip

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Wed 4/8

6:30 pm-6:45 pm

2 stops17h 15m

Lisbon Humberto Delgado

Wed 4/15

5:00 am-5:54 pm

2 stops19h 54m

$740

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Wed 4/8

1:43 pm-5:55 pm

2 stops21h 12m

Lisbon Humberto Delgado

Wed 4/15

11:05 am-12:53 pm

2 stops32h 48m

$745

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Wed 4/8

1:43 pm-5:55 pm

2 stops21h 12m

Lisbon Humberto Delgado

Wed 4/15

11:05 am-12:53 pm

2 stops32h 48m

$795

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Mon 5/4

1:40 pm-6:45 pm

2 stops22h 05m

Lisbon Humberto Delgado

Sun 5/10

5:35 am-11:40 pm

2 stops25h 05m

$895

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Thu 5/7

3:30 pm-10:25 pm

2 stops23h 55m

Lisbon Humberto Delgado

Thu 5/14

9:50 am-11:40 pm

2 stops20h 50m

$905

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Fri 9/4

4:19 pm-11:00 am

2 stops59h 41m

Lisbon Humberto Delgado

Tue 9/8

11:25 am-11:34 am

2 stops31h 09m

$941

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Fri 9/4

5:32 pm-11:00 am

2 stops58h 28m

Lisbon Humberto Delgado

Tue 9/8

11:25 am-1:27 pm

2 stops33h 02m

$991

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Mon 6/8

1:18 pm-2:35 pm

2 stops18h 17m

Lisbon Humberto Delgado

Sat 6/20

5:35 am-11:44 pm

2 stops25h 09m

$1,245

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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

Can stopping save me money on Montana to Portugal flights?

You could potentially save up to 21% 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

Fastest flight time

19h 43m

Direct flights

None
The fastest flight from Montana to Portugal takes 19h 43m
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?

  • 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 AirlinesPriceFrom $498Free CancellationRating
7.4
9,499 reviews
Search United Airlines flights
DeltaPriceFrom $501Free CancellationRating
7.9
8,356 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.

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Find better results for your trip to Portugal

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