Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Montana to Portugal from $718

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Montana to Portugal departing on 10/26. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Montana to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
12:30 pm - 10:15 am
BZN
-
LIS
15h 45m
2 stops
United Airlines Logo
11:20 am - 11:33 am
LIS
-
BZN
31h 13m
2 stops
$718United Airlines
Mon, Oct 26 - Tue, Nov 3
United Airlines Logo
12:30 pm - 10:15 am
BZN
-
LIS
14h 45m
2 stops
United Airlines Logo
11:20 am - 11:33 am
LIS
-
BZN
31h 13m
2 stops
$719United Airlines
Tue, Nov 3 - Tue, Nov 17
United Airlines Logo
12:30 pm - 10:15 am
BZN
-
LIS
15h 45m
2 stops
United Airlines Logo
5:00 am - 9:07 pm
LIS
-
BZN
23h 07m
3 stops
$726United Airlines
Mon, Oct 26 - Tue, Nov 3
United Airlines Logo
2:37 pm - 9:50 am
BZN
-
LIS
37h 13m
3 stops
United Airlines Logo
5:00 am - 9:07 pm
LIS
-
BZN
23h 07m
3 stops
$730United Airlines
Mon, Oct 26 - Tue, Nov 3
United Airlines Logo
5:32 pm - 8:10 am
MSO
-
LIS
55h 38m
2 stops
United Airlines Logo
5:00 am - 9:26 pm
LIS
-
MSO
23h 26m
2 stops
$770United Airlines
Fri, Nov 6 - Fri, Nov 20
United Airlines Logo
6:30 am - 11:05 am
BZN
-
LIS
21h 35m
2 stops
United Airlines Logo
11:25 am - 3:23 pm
LIS
-
BZN
34h 58m
2 stops
$783United Airlines
Tue, Oct 13 - Wed, Oct 21
Air France Logo
3:40 pm - 5:50 pm
BZN
-
LIS
19h 10m
2 stops
Air France Logo
5:30 am - 10:21 pm
LIS
-
BZN
22h 51m
2 stops
$911Air France
Mon, Oct 12 - Mon, Oct 26
Lufthansa Logo
11:30 am - 8:20 am
BZN
-
LIS
13h 50m
1 stop
Lufthansa Logo
11:55 am - 9:47 am
LIS
-
BZN
27h 52m
2 stops
$964Lufthansa
Mon, Oct 12 - Mon, Oct 26
Delta Logo
5:55 am - 2:55 pm
MSO
-
LIS
26h 00m
2 stops
Delta Logo
5:00 am - 5:49 pm
LIS
-
MSO
19h 49m
2 stops
$1,168Delta
Tue, Jun 23 - Thu, Jul 2
Delta Logo
1:17 pm - 10:45 am
MSO
-
LIS
38h 28m
2 stops
Delta Logo
5:00 am - 12:28 am
LIS
-
MSO
26h 28m
2 stops
$1,183Delta
Sat, Jun 20 - Thu, Jul 2

British Airways flights from Montana to Portugal

Our best British Airways deals on Montana to Portugal flight tickets
British Airways
Jun 20
MSO5:00 pmMissoula Johnson-Bell Field
23h 10m
2 stops
LIS11:10 pmLisbon Humberto Delgado
Jun 27
LIS4:25 pmLisbon Humberto Delgado
38h 31m
2 stops
MSO11:56 pmMissoula Johnson-Bell Field
$1,595
British Airways
Jun 20
MSO5:00 pmMissoula Johnson-Bell Field
23h 10m
2 stops
LIS11:10 pmLisbon Humberto Delgado
Jun 29
LIS6:45 pmLisbon Humberto Delgado
36h 11m
2 stops
MSO11:56 pmMissoula Johnson-Bell Field
$1,597
British Airways
Jun 20
MSO5:00 pmMissoula Johnson-Bell Field
23h 10m
2 stops
LIS11:10 pmLisbon Humberto Delgado
Jun 28
LIS7:20 amLisbon Humberto Delgado
23h 36m
2 stops
MSO11:56 pmMissoula Johnson-Bell Field
$1,958

Delta flights from Montana to Portugal

Our best Delta deals on Montana to Portugal flight tickets
Delta
Jul 27
BZN3:54 pmBozeman Gallatin Field
18h 56m
2 stops
LIS5:50 pmLisbon Humberto Delgado
Aug 3
LIS10:00 amLisbon Humberto Delgado
21h 04m
2 stops
BZN12:04 amBozeman Gallatin Field
$1,025
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
$1,111
Delta
Jun 23
MSO5:55 amMissoula Johnson-Bell Field
26h 00m
2 stops
LIS2:55 pmLisbon Humberto Delgado
Jul 2
LIS5:00 amLisbon Humberto Delgado
19h 49m
2 stops
MSO5:49 pmMissoula Johnson-Bell Field
$1,168

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 May 10, 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

Mon 10/26

12:30 pm-10:15 am

2 stops15h 45m

Lisbon Humberto Delgado

Tue 11/3

11:20 am-11:33 am

2 stops31h 13m

$718

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Tue 11/3

12:30 pm-10:15 am

2 stops14h 45m

Lisbon Humberto Delgado

Tue 11/17

11:20 am-11:33 am

2 stops31h 13m

$719
Quickest round-trip

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Mon 10/26

12:30 pm-10:15 am

2 stops15h 45m

Lisbon Humberto Delgado

Tue 11/3

5:00 am-9:07 pm

3 stops23h 07m

$726

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Mon 10/26

2:37 pm-9:50 am

3 stops37h 13m

Lisbon Humberto Delgado

Tue 11/3

5:00 am-9:07 pm

3 stops23h 07m

$730

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Fri 11/6

5:32 pm-8:10 am

2 stops55h 38m

Lisbon Humberto Delgado

Fri 11/20

5:00 am-9:26 pm

2 stops23h 26m

$770

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Tue 10/13

6:30 am-11:05 am

2 stops21h 35m

Lisbon Humberto Delgado

Wed 10/21

11:25 am-3:23 pm

2 stops34h 58m

$783

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Mon 10/12

3:40 pm-5:50 pm

2 stops19h 10m

Lisbon Humberto Delgado

Mon 10/26

5:30 am-10:21 pm

2 stops22h 51m

$911

BozemanLisbon

BZN - LIS

BZNLIS

Bozeman Gallatin Field

Mon 10/12

11:30 am-8:20 am

1 stop13h 50m

Lisbon Humberto Delgado

Mon 10/26

11:55 am-9:47 am

2 stops27h 52m

$964

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Tue 6/23

5:55 am-2:55 pm

2 stops26h 00m

Lisbon Humberto Delgado

Thu 7/2

5:00 am-5:49 pm

2 stops19h 49m

$1,168

MissoulaLisbon

MSO - LIS

MSOLIS

Missoula Johnson-Bell Field

Sat 6/20

1:17 pm-10:45 am

2 stops38h 28m

Lisbon Humberto Delgado

Thu 7/2

5:00 am-12:28 am

2 stops26h 28m

$1,183

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 March. Flight prices, which tend to average around $499, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of March, then book flights to Portugal from Montana during November instead. Flights to Portugal in November, while not as cheap as those in March, still average around $501.

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

14h 45m

Direct flights

None
The fastest flight from Montana to Portugal takes 14h 45m
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
9,694 reviews
Search United Airlines flights
DeltaPriceFrom $600Free CancellationRating
7.9
8,454 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.

An easier way to manage your Portugal trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 6/9
Tue 6/16
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal

Popular cities in Portugal

Popular flights according to clicks in the last 7 days on momondo
Flights to Lisbonfrom $435
Flights to Portofrom $438
Flights to Funchalfrom $620
Flights to Farofrom $621
Flights to Ponta Delgadafrom $542
Flights to Lajesfrom $621
Flights to Pico Islandfrom $663
Flights to Hortafrom $777
Flights to Porto Santofrom $1,061
Flights to Velasfrom $771