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$78+ Cheap flights from Portland (PDX) to Big Sky, MT

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — BZN
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to Big Sky are usually found in January or October, booked 44 days in advance, depart on a Monday or Tuesday and return on a Thursday

Cheap flight deals from Portland to Big Sky

Keep the following information in mind while searching for Portland to Big Sky flight deals. Data was last updated September 11, 2025.

Round-trip from

$136
(Kiwi.com)

One-way from

$78
(Alaska Airlines)

Popular in

December

Cheapest in

January

Average price

$273
From Portland to Big Sky
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One-way flight from Portland to Big Sky
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Highest demand for flights based on searches. 1% potential increase in price ($6 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Portland to Big Sky

Cheapest flights from Portland to Big Sky
Explore the most affordable flight options available from Portland to Big Sky. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/309:30 pmPDX - BZN
Nonstop1h 42mHawaiian Airlines
Sat 10/45:25 amBZN - PDX
Nonstop1h 54mHawaiian Airlines
Deal found 9/9$128
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2510:30 amPDX - BZN
Nonstop1h 32mHawaiian Airlines
Sat 11/11:42 pmBZN - PDX
1 stop3h 49mHawaiian Airlines
Deal found 9/9$136
This Alaska Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/309:30 pmPDX - BZN
Nonstop1h 42mAlaska Airlines
Tue 10/76:00 amBZN - PDX
Nonstop1h 54mAlaska Airlines
Deal found 9/9$137
This Hawaiian Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/71:25 pmPDX - BZN
1 stop4h 15mHawaiian Airlines
Tue 10/146:00 amBZN - PDX
Nonstop1h 54mHawaiian Airlines
Deal found 9/10$147
This KAYAK deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1010:30 amPDX - BZN
Nonstop1h 32mAlaska Airlines
Sat 11/155:00 amBZN - PDX
Nonstop2h 04mAlaska Airlines
Deal found 9/10$152
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/307:00 amPDX - BZN
1 stop6h 14mHawaiian Airlines
Tue 10/76:00 amBZN - PDX
Nonstop1h 54mHawaiian Airlines
Deal found 9/9$153
This Delta deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/305:30 amPDX - BZN
1 stop4h 35mDelta
Wed 10/112:00 pmBZN - PDX
1 stop5h 15mDelta
Deal found 9/9$157
This lastminute.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/46:00 pmPDX - BZN
1 stop3h 37mAlaska Airlines
Mon 10/61:42 pmBZN - PDX
1 stop3h 40mAlaska Airlines
Deal found 9/10$160
This KAYAK deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/39:30 pmPDX - BZN
Nonstop1h 42mAlaska Airlines
Wed 10/86:00 amBZN - PDX
Nonstop1h 54mAlaska Airlines
Deal found 9/8$161
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/181:25 pmPDX - BZN
1 stop4h 15mHawaiian Airlines
Mon 10/206:00 amBZN - PDX
Nonstop1h 54mHawaiian Airlines
Deal found 9/9$164

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Big Sky 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, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Portland to Big Sky that are best for you.

Fly from

Portland

Fly to

Big Sky

Route

Depart

Return

Price

PortlandBozeman

PDX - BZN

PDXBZN

Portland

Sat 10/25

1:25 pm-6:40 pm

1 stop4h 15m

Bozeman Gallatin Field

Sat 11/1

1:42 pm-4:31 pm

1 stop3h 49m

$139

PortlandBozeman

PDX - BZN

PDXBZN

Portland

Sat 10/11

6:00 pm-10:37 pm

1 stop3h 37m

Bozeman Gallatin Field

Wed 10/15

6:00 am-6:54 am

Nonstop1h 54m

$147

PortlandBozeman

PDX - BZN

PDXBZN

Portland

Tue 9/30

5:30 am-11:05 am

1 stop4h 35m

Bozeman Gallatin Field

Wed 10/1

12:00 pm-4:15 pm

1 stop5h 15m

$157

PortlandBozeman

PDX - BZN

PDXBZN

Portland

Mon 10/27

9:30 pm-12:15 am

Nonstop1h 45m

Bozeman Gallatin Field

Sat 11/1

4:02 pm-4:56 pm

Nonstop1h 54m

$167

PortlandBozeman

PDX - BZN

PDXBZN

Portland

Sat 10/18

10:30 am-1:02 pm

Nonstop1h 32m

Bozeman Gallatin Field

Thu 10/23

6:00 am-6:54 am

Nonstop1h 54m

$167

PortlandBozeman

PDX - BZN

PDXBZN

Portland

Mon 10/20

8:20 pm-11:02 pm

Nonstop1h 42m

Bozeman Gallatin Field

Sat 10/25

1:47 pm-2:40 pm

Nonstop1h 53m

$167

PortlandBozeman

PDX - BZN

PDXBZN

Portland

Fri 10/3

7:30 am-3:16 pm

1 stop6h 46m

Bozeman Gallatin Field

Wed 10/8

4:19 pm-10:45 pm

1 stop7h 26m

$177

PortlandBozeman

PDX - BZN

PDXBZN

Portland

Mon 10/27

9:30 pm-12:15 am

Nonstop1h 45m

Bozeman Gallatin Field

Sat 11/1

1:42 pm-4:31 pm

1 stop3h 49m

$177

PortlandBozeman

PDX - BZN

PDXBZN

Portland

Sun 11/23

10:30 am-1:03 pm

Nonstop1h 33m

Bozeman Gallatin Field

Thu 11/27

5:00 am-6:06 am

Nonstop2h 06m

$197

PortlandBozeman

PDX - BZN

PDXBZN

Portland

Tue 10/21

1:25 pm-6:40 pm

1 stop4h 15m

Bozeman Gallatin Field

Fri 10/24

6:00 am-6:54 am

Nonstop1h 54m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 19 results
1
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Best time to book a flight from Portland to Big Sky

Have a flexible travel schedule? Discover the best time to fly to Big Sky from Portland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portland to Big Sky

How far ahead should I book a flight from Portland to Big Sky?

Use this chart to determine the optimal time to book a round-trip flight from Portland to Big Sky. Price data was last updated on August 29, 2025.

The best time to book flights from Portland to Big Sky is 44 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Portland to Big Sky?

Currently, October is the cheapest month in which you can book a flight from Portland to Big Sky (average of $371). Flying from Portland to Big Sky in May is currently the most expensive (average of $477). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PDX to BS1?

Find hourly flight availability from Portland to Big Sky. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portland to Big Sky as you normally would.

What is the cheapest day to fly from Portland to Big Sky?

Use this chart to determine the cheapest time to fly round-trip from Portland to Big Sky. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Portland to Big Sky flight should consider departing on Friday evenings when fares are most often at their lowest. Thursday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Portland to Big Sky

Explore weekly flight availability from Portland to Big Sky. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 11, 2025.

The most flights from PDX to BS1 are scheduled on a Monday (5 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 on average).

Reviews of airlines servicing Big Sky

Get insights into the airlines that provide service to Big Sky. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Big Sky. Reviews last updated September 11, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and Hawaiian Airlines from Portland to Big Sky have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
8.0
Very good
7,960 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Hawaiian Airlines
7.8
Good
2,723 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

Related info for your journey

Find useful and relevant information for your journey from Portland to Big Sky. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Portland to Big Sky?

    If you book a flight to Big Sky from Portland, you will be flying from Portland, which is the city’s only airport. Portland (PDX) is located 6.0 mi from the center of Portland. There are 4 flights from Portland to Big Sky per day from 3 different airlines.

  • How long is the flight from Portland to Big Sky?

    For as low as $139, Hawaiian Airlines can have you in Big Sky from Portland in 4h 15m. There are 552 mi between Portland and Big Sky. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Portland to Big Sky one-way?

    The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as $78. However, be on the lookout for offers from Hawaiian Airlines and Delta, as they are both options that can get you from Portland to Big Sky for a low price.

  • What are the most reliable airlines from Portland to Big Sky?

    Before booking your flight to Big Sky from Portland, check out the most reliable airlines to get you to your destination on time: SkyWest Airlines (100%), Alaska Airlines (93%), British Airways( 92%).

  • What are the cheapest flights from Portland to Big Sky?

    The cheapest flight price from Portland to Big Sky is $99. On average you can expect to pay $271. The most popular route, (Portland - Bozeman Gallatin Field), can usually be booked for $137.

  • Can I find deals for flights from Portland to Big Sky that include hotel bookings?

    Yes. In addition to deals on Portland to Big Sky flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Big Sky?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Big Sky.

  • Can I find deals for business class flights from Portland to Big Sky?

    Yes. Cheapflights offers flight deals from Portland to Big Sky by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portland to Big Sky?

    Currently, October is the cheapest month in which you can book a flight from Portland to Big Sky (average of $371). Flying from Portland to Big Sky in May is currently the most expensive (average of $477). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Alternative routes for Portland to Big Sky

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Portland to Big Sky

Discover the top 3 airlines that operate flights from Portland to Big Sky. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$137Average$268FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$157Average$375FlexibilityNo cancel feeOn-time75%
DeltaCheapest$166Average$401FlexibilityNo cancel feeOn-timeN/A

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