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Cheap flights from Montana to Portugal from $354

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 11/7. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Montana to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
Virgin Atlantic Logo
2:00 pm - 10:45 am
BZN
-
LIS
37h 45m
2 stops
Virgin Atlantic Logo
10:00 am - 12:10 am
LIS
-
BZN
21h 10m
2 stops
$577Virgin Atlantic
Wed, Oct 14 - Sat, Oct 24
United Airlines Logo
4:22 pm - 8:10 am
BZN
-
LIS
32h 48m
2 stops
United Airlines Logo
1:00 pm - 3:13 pm
LIS
-
BZN
33h 13m
2 stops
$726United Airlines
Sun, Nov 8 - Wed, Nov 11
United Airlines Logo
7:00 am - 10:05 am
BZN
-
LIS
20h 05m
2 stops
United Airlines Logo
5:00 am - 9:07 pm
LIS
-
BZN
23h 07m
2 stops
$729United Airlines
Sun, Nov 8 - Wed, Nov 11
United Airlines Logo
6:15 am - 8:10 am
MSO
-
LIS
18h 55m
2 stops
United Airlines Logo
1:00 pm - 9:26 pm
LIS
-
MSO
39h 26m
2 stops
$754United Airlines
Sun, Dec 6 - Thu, Dec 10
United Airlines Logo
6:15 am - 8:10 am
MSO
-
LIS
18h 55m
2 stops
United Airlines Logo
5:00 am - 9:26 pm
LIS
-
MSO
23h 26m
2 stops
$757United Airlines
Sun, Dec 6 - Thu, Dec 10
United Airlines Logo
6:30 am - 9:20 am
BZN
-
LIS
19h 50m
2 stops
United Airlines Logo
11:25 am - 7:12 pm
LIS
-
BZN
38h 47m
2 stops
$765United Airlines
Tue, Oct 13 - Wed, Oct 21
Delta Logo
6:10 pm - 8:00 am
MSO
-
LIS
30h 50m
2 stops
Delta Logo
11:30 am - 8:12 pm
LIS
-
MSO
39h 42m
2 stops
$781Delta
Sat, Nov 7 - Sun, Nov 15
Multiple Airlines Logo
6:27 pm - 6:45 pm
MSO
-
LIS
17h 18m
2 stops
Multiple Airlines Logo
6:50 pm - 5:37 pm
LIS
-
MSO
29h 47m
2 stops
$1,094Multiple Airlines
Fri, Sep 4 - Tue, Sep 8
Multiple Airlines Logo
6:27 pm - 6:45 pm
MSO
-
LIS
17h 18m
2 stops
Multiple Airlines Logo
3:55 pm - 5:37 pm
LIS
-
MSO
32h 42m
2 stops
$1,121Multiple Airlines
Fri, Sep 4 - Tue, Sep 8
American Airlines Logo
1:25 pm - 6:00 pm
MSO
-
LIS
21h 35m
2 stops
American Airlines Logo
11:00 am - 12:11 pm
LIS
-
MSO
32h 11m
2 stops
$1,137American Airlines
Fri, Sep 4 - Tue, Sep 8

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United Airlines flights from Montana to Portugal

Our best United Airlines deals on Montana to Portugal flight tickets
United Airlines
Nov 8
BZN4:22 pmBozeman Gallatin Field
32h 48m
2 stops
LIS8:10 amLisbon Humberto Delgado
Nov 11
LIS1:00 pmLisbon Humberto Delgado
33h 13m
2 stops
BZN3:13 pmBozeman Gallatin Field
$726
United Airlines
Nov 8
BZN7:00 amBozeman Gallatin Field
20h 05m
2 stops
LIS10:05 amLisbon Humberto Delgado
Nov 11
LIS5:00 amLisbon Humberto Delgado
23h 07m
2 stops
BZN9:07 pmBozeman Gallatin Field
$729
United Airlines
Dec 6
MSO6:15 amMissoula Johnson-Bell Field
18h 55m
2 stops
LIS8:10 amLisbon Humberto Delgado
Dec 10
LIS1:00 pmLisbon Humberto Delgado
39h 26m
2 stops
MSO9:26 pmMissoula Johnson-Bell Field
$754

Delta flights from Montana to Portugal

Our best Delta deals on Montana to Portugal flight tickets
Delta
Oct 11
BZN3:40 pmBozeman Gallatin Field
19h 10m
2 stops
LIS5:50 pmLisbon Humberto Delgado
Oct 22
LIS5:00 amLisbon Humberto Delgado
19h 55m
2 stops
BZN5:55 pmBozeman Gallatin Field
$819
Delta
Oct 11
BZN3:40 pmBozeman Gallatin Field
19h 10m
2 stops
LIS5:50 pmLisbon Humberto Delgado
Oct 24
LIS5:35 amLisbon Humberto Delgado
19h 20m
2 stops
BZN5:55 pmBozeman Gallatin Field
$886
Delta
Oct 17
BZN8:30 amBozeman Gallatin Field
23h 25m
2 stops
LIS2:55 pmLisbon Humberto Delgado
Oct 24
LIS5:35 amLisbon Humberto Delgado
23h 46m
2 stops
BZN10:21 pmBozeman Gallatin Field
$893

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 June 27, 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

Wed 10/14

2:00 pm-10:45 am

2 stops37h 45m

Lisbon Humberto Delgado

Sat 10/24

10:00 am-12:10 am

2 stops21h 10m

$577

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Sun 11/8

4:22 pm-8:10 am

2 stops32h 48m

Lisbon Humberto Delgado

Wed 11/11

1:00 pm-3:13 pm

2 stops33h 13m

$726

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Sun 11/8

7:00 am-10:05 am

2 stops20h 05m

Lisbon Humberto Delgado

Wed 11/11

5:00 am-9:07 pm

2 stops23h 07m

$729

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Sun 12/6

6:15 am-8:10 am

2 stops18h 55m

Lisbon Humberto Delgado

Thu 12/10

1:00 pm-9:26 pm

2 stops39h 26m

$754
Quickest round-trip

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Sun 12/6

6:15 am-8:10 am

2 stops18h 55m

Lisbon Humberto Delgado

Thu 12/10

5:00 am-9:26 pm

2 stops23h 26m

$757

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Tue 10/13

6:30 am-9:20 am

2 stops19h 50m

Lisbon Humberto Delgado

Wed 10/21

11:25 am-7:12 pm

2 stops38h 47m

$765

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Sat 11/7

6:10 pm-8:00 am

2 stops30h 50m

Lisbon Humberto Delgado

Sun 11/15

11:30 am-8:12 pm

2 stops39h 42m

$781

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Fri 9/4

6:27 pm-6:45 pm

2 stops17h 18m

Lisbon Humberto Delgado

Tue 9/8

6:50 pm-5:37 pm

2 stops29h 47m

$1,094

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Fri 9/4

6:27 pm-6:45 pm

2 stops17h 18m

Lisbon Humberto Delgado

Tue 9/8

3:55 pm-5:37 pm

2 stops32h 42m

$1,121

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Fri 9/4

1:25 pm-6:00 pm

2 stops21h 35m

Lisbon Humberto Delgado

Tue 9/8

11:00 am-12:11 pm

2 stops32h 11m

$1,137

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
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See travel insights to Portugal from

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

What is the cheapest month to fly to Portugal?

The cheapest month to fly to Portugal from Montana is in October. Flight prices, which tend to average around $498, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of October, then book flights to Portugal from Montana during March instead. Flights to Portugal in March, while not as cheap as those in October, still average around $499.

Can stopping save me money on Montana to Portugal flights?

You could potentially save up to 59% 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

18h 55m

Direct flights

None
The fastest flight from Montana to Portugal takes 18h 55m
There are no direct flights from Montana to Portugal. There are no popular flight routes from Montana to Portugal.
Search flight deals

Frequently asked questions about flying 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?

  • 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
9,896 reviews
Search United Airlines flights
DeltaPriceFrom $501Free CancellationRating
7.8
8,451 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

Popular cities in Portugal

Popular flights according to clicks in the last 7 days on momondo
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