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Big Sky

$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 2/28. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — BZN
nov. 28 — dic. 51
vie. 11/28
vie. 12/5
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to Big Sky are usually found in January or August, booked 44 days in advance, depart on a Tuesday or Monday 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 octubre 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$137
(Alaska Airlines)

One-way from

$78
(Alaska Airlines)

Popular in

December

Cheapest in

January

Average price

$257
Provider with most accurate pricing for Portland-Bozeman Gallatin Field flight deals.
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Provider most trusted by Cheapflights users for Portland-Bozeman Gallatin Field flights.
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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. 0% potential increase in price ($0 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in October 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 octubre 29, 2025.

This Delta deal was found by Cheapflights users on 10/28. 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.
sáb. 12/65:25 amPDX - BZN
1 stop4h 25mDelta
sáb. 12/135:30 amBZN - PDX
1 stop4h 40mDelta
Deal found 10/28$147
This Delta deal was found by Cheapflights users on 10/28. 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.
jue. 12/117:09 pmPDX - BZN
1 stop4h 09mDelta
sáb. 12/135:30 amBZN - PDX
1 stop4h 40mDelta
Deal found 10/28$157
This Southwest deal was found by Cheapflights users on 10/27. 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.
sáb. 12/65:40 amPDX - BZN
1 stop5h 35mSouthwest
mar. 12/95:30 amBZN - PDX
2 stops9h 00mSouthwest
Deal found 10/27$162
This Alaska Airlines deal was found by Cheapflights users on 10/27. 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.
sáb. 12/610:30 amPDX - BZN
Nonstop1h 34mAlaska Airlines
mar. 12/97:00 amBZN - PDX
1 stop6h 42mAlaska Airlines
Deal found 10/27$167
This Delta deal was found by Cheapflights users on 10/26. 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.
vie. 12/127:09 pmPDX - BZN
1 stop4h 09mDelta
lun. 12/155:30 amBZN - PDX
1 stop4h 40mDelta
Deal found 10/26$177
This Delta deal was found by Cheapflights users on 10/28. 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.
lun. 11/247:22 pmPDX - BZN
1 stop3h 48mDelta
sáb. 11/297:25 amBZN - PDX
1 stop17h 49mDelta
Deal found 10/28$186
This Alaska Airlines deal was found by Cheapflights users on 10/27. 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.
vie. 12/125:49 pmPDX - BZN
1 stop4h 28mAlaska Airlines
dom. 1/48:20 amBZN - PDX
Nonstop2h 05mAlaska Airlines
Deal found 10/27$187
This Orbitz deal was found by Cheapflights users on 10/27. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/1310:30 amPDX - BZN
Nonstop1h 34mAlaska Airlines
sáb. 12/278:20 amBZN - PDX
Nonstop2h 05mAlaska Airlines
Deal found 10/27$188
This Delta deal was found by Cheapflights users on 10/28. 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.
lun. 11/247:22 pmPDX - BZN
1 stop3h 48mDelta
vie. 11/283:00 pmBZN - PDX
1 stop18h 31mDelta
Deal found 10/28$196

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 octubre 29, 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

vie. 1/9

10:32 am-1:06 pm

Nonstop1h 34m

Bozeman Gallatin Field

lun. 1/12

4:03 pm-5:00 pm

Nonstop1h 57m

$157

PortlandBozeman

PDX - BZN

PDXBZN

Portland

lun. 12/8

5:05 pm-12:18 am

1 stop6h 13m

Bozeman Gallatin Field

sáb. 12/13

5:30 am-9:10 am

1 stop4h 40m

$157

PortlandBozeman

PDX - BZN

PDXBZN

Portland

vie. 1/23

10:40 am-3:23 pm

1 stop3h 43m

Bozeman Gallatin Field

mié. 1/28

3:03 pm-6:56 pm

1 stop4h 53m

$166

PortlandBozeman

PDX - BZN

PDXBZN

Portland

mar. 2/17

8:40 am-2:25 pm

1 stop4h 45m

Bozeman Gallatin Field

jue. 2/19

7:13 pm-12:03 am

1 stop5h 50m

$166

PortlandBozeman

PDX - BZN

PDXBZN

Portland

vie. 1/23

6:00 am-11:00 am

1 stop4h 00m

Bozeman Gallatin Field

mar. 1/27

3:00 pm-6:50 pm

1 stop4h 50m

$167

PortlandBozeman

PDX - BZN

PDXBZN

Portland

sáb. 1/24

9:10 am-2:09 pm

1 stop3h 59m

Bozeman Gallatin Field

mié. 1/28

4:03 pm-5:00 pm

Nonstop1h 57m

$167

PortlandBozeman

PDX - BZN

PDXBZN

Portland

mar. 2/17

2:25 pm-10:40 pm

1 stop7h 15m

Bozeman Gallatin Field

jue. 2/19

12:45 pm-9:10 pm

2 stops9h 25m

$172

PortlandBozeman

PDX - BZN

PDXBZN

Portland

vie. 1/23

10:40 am-3:23 pm

1 stop3h 43m

Bozeman Gallatin Field

lun. 1/26

3:03 pm-8:47 pm

1 stop6h 44m

$176

PortlandBozeman

PDX - BZN

PDXBZN

Portland

vie. 12/12

7:09 pm-12:18 am

1 stop4h 09m

Bozeman Gallatin Field

lun. 12/15

5:30 am-9:10 am

1 stop4h 40m

$177

PortlandBozeman

PDX - BZN

PDXBZN

Portland

sáb. 12/6

5:15 pm-10:26 pm

1 stop4h 11m

Bozeman Gallatin Field

sáb. 12/13

5:30 am-10:37 pm

2 stops18h 07m

$181

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 21 results
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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 October 24, 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, 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 octubre 29, 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 evening could potentially save you up to 36% 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 afternoons 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 octubre 29, 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
11,206 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Alaska Airlines
8.0
Very good
11,206 reviews
Alaska Airlines
8.0
Very good
11,206 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Delta
7.9
Good
7,994 reviews
Alaska Airlines
8.0
Very good
11,206 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Hawaiian Airlines
7.8
Good
2,794 reviews
Alaska Airlines
8.0
Very good
11,206 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
United Airlines
7.4
Good
9,001 reviews
Alaska Airlines
8.0
Very good
11,206 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

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 3 flights 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 $157, 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 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 Delta and Southwest, 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: Horizon Air (97%), Alaska Airlines (96%), Hawaiian Airlines( 96%).

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

    The cheapest flight price from Portland to Big Sky is $93. On average you can expect to pay $290. 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 octubre 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$137Average$268FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$157Average$365FlexibilityNo cancel feeOn-time75%
DeltaCheapest$166Average$387FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$176Average$274FlexibilityNo cancel feeOn-time69%

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