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Cheap flights from Montana to Portugal from $378

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 11/17. 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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Cheap round-trip flights

Air France Logo
8:00 am - 8:00 amMSO-LIS
18h 00m2 stops
Air France Logo
5:30 am - 9:18 pmLIS-MSO
22h 48m2 stops
$625Air France
Find Deal
Wed, Oct 29 - Sat, Nov 8
Delta Logo
8:00 am - 8:00 amMSO-LIS
17h 00m2 stops
Delta Logo
11:15 am - 12:32 amLIS-MSO
44h 17m2 stops
$626Delta
Find Deal
Wed, Nov 12 - Sun, Nov 16
United Airlines Logo
10:49 am - 8:10 amBZN-LIS
14h 21m2 stops
United Airlines Logo
10:50 am - 9:39 pmLIS-BZN
41h 49m2 stops
$643United Airlines
Find Deal
Wed, Dec 3 - Sun, Dec 7
United Airlines Logo
4:35 pm - 9:20 amBZN-LIS
58h 45m2 stops
United Airlines Logo
6:10 am - 10:00 amLIS-BZN
34h 50m2 stops
$676United Airlines
Find Deal
Sat, Nov 1 - Sat, Nov 15
Lufthansa Logo
2:41 pm - 10:05 pmBZN-LIS
24h 24m2 stops
Lufthansa Logo
5:05 am - 9:07 pmLIS-BZN
23h 02m2 stops
$784Lufthansa
Find Deal
Wed, Sep 24 - Wed, Oct 1
Lufthansa Logo
2:41 pm - 11:30 pmBZN-LIS
25h 49m2 stops
Lufthansa Logo
5:05 am - 6:58 pmLIS-BZN
44h 53m2 stops
$791Lufthansa
Find Deal
Wed, Sep 24 - Fri, Oct 3
American Airlines Logo
4:19 pm - 6:25 pmBZN-LIS
19h 06m2 stops
American Airlines Logo
12:30 pm - 10:39 amLIS-BZN
29h 09m2 stops
$842American Airlines
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Sat, Sep 20 - Fri, Oct 3
Logo
2:35 pm - 5:40 pmMSO-LIS
20h 05m2 stops
Logo
7:05 am - 11:39 pmLIS-MSO
23h 34m2 stops
$844
Find Deal
Tue, Dec 16 - Tue, Dec 30
Logo
6:37 am - 9:05 amMSO-LIS
19h 28m2 stops
Logo
11:05 am - 12:18 pmLIS-MSO
32h 13m2 stops
$939
Find Deal
Thu, Oct 9 - Sat, Oct 18
American Airlines Logo
1:39 pm - 7:45 amBZN-LIS
35h 06m2 stops
American Airlines Logo
6:35 am - 12:49 pmLIS-BZN
37h 14m2 stops
$1,053American Airlines
Find Deal
Sun, Sep 21 - Sat, Oct 4

United Airlines flights from Montana to Portugal

Our best United Airlines deals on Montana to Portugal flight tickets
United Airlines
Dec 3
BZN10:49 amBozeman Gallatin Field
14h 21m
2 stops
LIS8:10 amLisbon Humberto Delgado
Dec 7
LIS10:50 amLisbon Humberto Delgado
41h 49m
2 stops
BZN9:39 pmBozeman Gallatin Field
$643
Find similar
United Airlines
Nov 1
BZN4:35 pmBozeman Gallatin Field
58h 45m
2 stops
LIS9:20 amLisbon Humberto Delgado
Nov 15
LIS6:10 amLisbon Humberto Delgado
34h 50m
2 stops
BZN10:00 amBozeman Gallatin Field
$676
Find similar
United Airlines
Sep 22
BZN7:00 amBozeman Gallatin Field
20h 30m
2 stops
LIS10:30 amLisbon Humberto Delgado
Oct 7
LIS5:05 amLisbon Humberto Delgado
23h 02m
2 stops
BZN9:07 pmBozeman Gallatin Field
$762
Find similar

Delta flights from Montana to Portugal

Our best Delta deals on Montana to Portugal flight tickets
Delta
Nov 12
MSO8:00 amMissoula Johnson-Bell Field
17h 00m
2 stops
LIS8:00 amLisbon Humberto Delgado
Nov 16
LIS11:15 amLisbon Humberto Delgado
44h 17m
2 stops
MSO12:32 amMissoula Johnson-Bell Field
$626
Find similar
Delta
Nov 12
MSO6:10 pmMissoula Johnson-Bell Field
31h 50m
2 stops
LIS9:00 amLisbon Humberto Delgado
Nov 16
LIS11:15 amLisbon Humberto Delgado
39h 57m
2 stops
MSO8:12 pmMissoula Johnson-Bell Field
$628
Find similar
Delta
Sep 20
MSO5:45 amMissoula Johnson-Bell Field
26h 05m
2 stops
LIS2:50 pmLisbon Humberto Delgado
Sep 27
LIS5:40 amLisbon Humberto Delgado
24h 33m
2 stops
MSO11:13 pmMissoula Johnson-Bell Field
$728
Find similar

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 August 7, 2025.
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

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Wed 10/29

8:00 am-8:00 am

2 stops18h 00m

Lisbon Humberto Delgado

Sat 11/8

5:30 am-9:18 pm

2 stops22h 48m

$625

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Wed 11/12

8:00 am-8:00 am

2 stops17h 00m

Lisbon Humberto Delgado

Sun 11/16

11:15 am-12:32 am

2 stops44h 17m

$626

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Wed 12/3

10:49 am-8:10 am

2 stops14h 21m

Lisbon Humberto Delgado

Sun 12/7

10:50 am-9:39 pm

2 stops41h 49m

$643

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Sat 11/1

4:35 pm-9:20 am

2 stops58h 45m

Lisbon Humberto Delgado

Sat 11/15

6:10 am-10:00 am

2 stops34h 50m

$676

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Wed 9/24

2:41 pm-10:05 pm

2 stops24h 24m

Lisbon Humberto Delgado

Wed 10/1

5:05 am-9:07 pm

2 stops23h 02m

$784

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Wed 9/24

2:41 pm-11:30 pm

2 stops25h 49m

Lisbon Humberto Delgado

Fri 10/3

5:05 am-6:58 pm

2 stops44h 53m

$791

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Sat 9/20

4:19 pm-6:25 pm

2 stops19h 06m

Lisbon Humberto Delgado

Fri 10/3

12:30 pm-10:39 am

2 stops29h 09m

$842

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Tue 12/16

2:35 pm-5:40 pm

2 stops20h 05m

Lisbon Humberto Delgado

Tue 12/30

7:05 am-11:39 pm

2 stops23h 34m

$844

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Thu 10/9

6:37 am-9:05 am

2 stops19h 28m

Lisbon Humberto Delgado

Sat 10/18

11:05 am-12:18 pm

2 stops32h 13m

$939

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Sun 9/21

1:39 pm-7:45 am

2 stops35h 06m

Lisbon Humberto Delgado

Sat 10/4

6:35 am-12:49 pm

2 stops37h 14m

$1,053

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 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 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 40% 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

Best Price Found

$378

Fastest flight time

12h 05m

Direct flights

None

Airports in Portugal

1 airport
The best one-way flight to Portugal from Montana in the past 72 hours is $378. The best round-trip flight deal from Montana to Portugal found on momondo in the last 72 hours is $625.
The fastest flight from Montana to Portugal takes 12h 05m
There are no direct flights from Montana to Portugal. Popular non-direct routes for this connection are Bozeman Gallatin Field Airport - Lisbon Humberto Delgado Airport and Missoula Johnson-Bell Field Airport - Lisbon Humberto Delgado Airport.
There is 1 airport near Portugal: Lisbon Humberto Delgado (LIS)
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  • 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 $549Free CancellationRating
7.4
8,917 reviews
Search United Airlines flights
DeltaPriceFrom $618Free CancellationRating
8.0
7,985 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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