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Big Sky

$74+ 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 1/6. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — BZN
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to Big Sky are usually found in January or September, booked 37 days in advance, depart on a Tuesday or Wednesday and return on a Thursday

Cheap 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 December 15, 2025.

This Southwest deal was found by Cheapflights users on 12/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/195:20 amPDX - BZN
1 stop5h 35mSouthwest
Sun 12/213:40 pmBZN - PDX
1 stop10h 25mSouthwest
Deal found 12/13$391
This United Airlines deal was found by Cheapflights users on 12/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/182:45 pmPDX - BZN
1 stop5h 23mUnited Airlines
Thu 12/254:26 pmBZN - PDX
1 stop7h 20mUnited Airlines
Deal found 12/13$399
This Southwest deal was found by Cheapflights users on 12/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/183:55 pmPDX - BZN
1 stop7h 20mSouthwest
Sun 12/213:40 pmBZN - PDX
1 stop10h 25mSouthwest
Deal found 12/13$404
This Delta deal was found by Cheapflights users on 12/14. 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.
Sun 12/285:25 pmPDX - BZN
1 stop4h 06mDelta
Wed 12/317:19 amBZN - PDX
1 stop5h 19mDelta
Deal found 12/14$408
This Delta deal was found by Cheapflights users on 12/13. 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.
Mon 12/229:19 amPDX - BZN
1 stop6h 20mDelta
Fri 12/265:30 pmBZN - PDX
1 stop5h 29mDelta
Deal found 12/13$418
This Alaska Airlines deal was found by Cheapflights users on 12/14. 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.
Mon 12/299:40 pmPDX - BZN
1 stop16h 37mAlaska Airlines
Thu 1/13:57 pmBZN - PDX
Nonstop2h 03mAlaska Airlines
Deal found 12/14$426
This Southwest deal was found by Cheapflights users on 12/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/162:35 pmPDX - BZN
1 stop7h 10mSouthwest
Sun 12/215:30 pmBZN - PDX
1 stop7h 55mSouthwest
Deal found 12/14$446
This Alaska Airlines deal was found by Cheapflights users on 12/13. 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.
Mon 12/227:55 pmPDX - BZN
Nonstop1h 33mAlaska Airlines
Fri 12/267:56 pmBZN - PDX
1 stop5h 16mAlaska Airlines
Deal found 12/13$448

Find 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 December 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$136
(Kiwi.com)

One-way from

$74
(Delta)

Popular in

June

Cheapest in

January

Average price

$293
Provider with most accurate pricing for Portland-Bozeman Gallatin Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Bozeman Gallatin Field flights.
Search Deals
From Portland to Big Sky
Search Deals
One-way flight from Portland to Big Sky
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($54 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 15, 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

Tue 1/27

10:32 am-1:06 pm

Nonstop1h 34m

Bozeman Gallatin Field

Sat 1/31

1:46 pm-2:43 pm

Nonstop1h 57m

$137

PortlandBozeman

PDX - BZN

PDXBZN

Portland

Wed 1/14

10:32 am-1:06 pm

Nonstop1h 34m

Bozeman Gallatin Field

Wed 1/21

4:03 pm-5:00 pm

Nonstop1h 57m

$137

PortlandBozeman

PDX - BZN

PDXBZN

Portland

Wed 1/21

5:15 pm-10:27 pm

1 stop4h 12m

Bozeman Gallatin Field

Tue 1/27

3:00 pm-6:50 pm

1 stop4h 50m

$147

PortlandBozeman

PDX - BZN

PDXBZN

Portland

Wed 1/14

5:15 pm-10:27 pm

1 stop4h 12m

Bozeman Gallatin Field

Wed 1/21

3:00 pm-8:59 pm

1 stop6h 59m

$147

PortlandBozeman

PDX - BZN

PDXBZN

Portland

Sat 1/24

7:10 am-2:20 pm

1 stop6h 10m

Bozeman Gallatin Field

Mon 1/26

3:00 pm-6:50 pm

1 stop4h 50m

$157

PortlandBozeman

PDX - BZN

PDXBZN

Portland

Sat 1/17

5:50 am-11:00 am

1 stop4h 10m

Bozeman Gallatin Field

Sun 1/18

5:15 am-9:03 am

1 stop4h 48m

$157

PortlandBozeman

PDX - BZN

PDXBZN

Portland

Wed 1/21

2:15 pm-10:15 pm

1 stop7h 00m

Bozeman Gallatin Field

Mon 1/26

3:50 pm-10:15 pm

1 stop7h 25m

$159

PortlandBozeman

PDX - BZN

PDXBZN

Portland

Sat 1/24

9:30 am-8:30 pm

2 stops10h 00m

Bozeman Gallatin Field

Mon 1/26

3:50 pm-10:15 pm

1 stop7h 25m

$164

PortlandBozeman

PDX - BZN

PDXBZN

Portland

Tue 1/6

10:30 am-1:03 pm

Nonstop1h 33m

$139

PortlandBozeman

PDX - BZN

PDXBZN

Portland

Wed 1/21

5:35 pm-11:56 pm

1 stop5h 21m

$153

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Showing 1-10 of 14 results
1
2

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 December 12, 2025.

The best time to book flights from Portland to Big Sky is 37 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, August is the cheapest month in which you can book a flight from Portland to Big Sky (average of $135). Flying from Portland to Big Sky in June is currently the most expensive (average of $230). 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 December 15, 2025.

One of the essential ways to save on airfare from Portland to Big Sky is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 47% on airfare.

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 Wednesday afternoons when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 15, 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
11,453 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Alaska Airlines
8.0
Very good
11,453 reviews
Alaska Airlines
8.0
Very good
11,453 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Delta
7.9
Good
8,008 reviews
Alaska Airlines
8.0
Very good
11,453 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Hawaiian Airlines
7.8
Good
2,819 reviews
Alaska Airlines
8.0
Very good
11,453 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
United Airlines
7.4
Good
9,093 reviews
Alaska Airlines
8.0
Very good
11,453 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

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 is 1 flight from Portland to Big Sky per day from 4 different airlines.

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

    For as low as $137, Alaska Airlines can have you in Big Sky from Portland in 1h 34m. 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 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: Horizon Air (96%), Hawaiian Airlines (94%), British Airways( 91%).

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

    The cheapest flight price from Portland to Big Sky is $98. On average you can expect to pay $210. The most popular route, (Portland - Bozeman Gallatin Field), can usually be booked for $147.

  • 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, August is the cheapest month in which you can book a flight from Portland to Big Sky (average of $135). Flying from Portland to Big Sky in June is currently the most expensive (average of $230). 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.

See more FAQs

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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 4 airlines flying from Portland to Big Sky

Discover the top 4 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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$137Average$268FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$137Average$384FlexibilityNo cancel feeOn-time75%
DeltaCheapest$166Average$401FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$176Average$274FlexibilityNo cancel feeOn-time69%

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