HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Diego

$95+ Cheap flights from Montana to San Diego (SAN)

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 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — SAN
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Montana to San Diego with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Montana to San Diego

Keep the following information in mind while searching for Montana to San Diego flight deals. Data was last updated July 31, 2025.

Round-trip from

$152
(Mytrip)

One-way from

$95
(Mytrip)

Popular in

December

Cheapest in

April

Average price

$297

Good round-trip deal

$502 or less

Good one-way deal

$138 or less
From Montana to San Diego
Search Deals
One-way flight from Montana to San Diego
Search Deals
High demand for flights, 3% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals
Price to beat on a round-trip flight from Montana to San Diego.
Search Deals
Price to beat on a one-way flight from Montana to San Diego.
Search Deals

Find flight deals from Montana to San Diego

Cheapest flights from Montana to San Diego
Explore the most affordable flight options available from Montana to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

This Mytrip deal was found by Cheapflights users on 7/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/115:33 pmFCA - SAN
1 stop6h 51mMultiple Airlines
Sun 9/146:15 amSAN - FCA
1 stop9h 28mMultiple Airlines
Deal found 7/29$152
This United Airlines deal was found by Cheapflights users on 7/29. 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.
Wed 10/292:43 pmBZN - SAN
1 stop7h 11mUnited Airlines
Sun 11/25:45 amSAN - BZN
1 stop5h 50mUnited Airlines
Deal found 7/29$177
This Southwest deal was found by Cheapflights users on 7/29. 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 8/295:00 pmBZN - SAN
1 stop7h 15mSouthwest
Tue 9/211:20 amSAN - BZN
1 stop4h 30mSouthwest
Deal found 7/29$197
This Mytrip deal was found by Cheapflights users on 7/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2910:27 pmMSO - SAN
1 stop9h 54mMultiple Airlines
Mon 9/16:15 amSAN - MSO
1 stop12h 16mMultiple Airlines
Deal found 7/29$206
This Delta deal was found by Cheapflights users on 7/29. 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 10/266:20 pmBZN - SAN
1 stop6h 28mDelta
Wed 11/53:15 pmSAN - BZN
1 stop5h 59mDelta
Deal found 7/29$237
This Delta deal was found by Cheapflights users on 7/30. 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.
Thu 9/183:33 pmMSO - SAN
1 stop9h 09mDelta
Mon 9/225:05 pmSAN - MSO
1 stop6h 13mDelta
Deal found 7/30$241
This Mytrip deal was found by Cheapflights users on 7/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/159:12 pmBIL - SAN
1 stop11h 09mMultiple Airlines
Mon 8/186:15 amSAN - BIL
1 stop13h 52mMultiple Airlines
Deal found 7/29$250
This Delta deal was found by Cheapflights users on 7/29. 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.
Fri 11/76:10 pmBTM - SAN
1 stop6h 38mDelta
Tue 11/1110:05 amSAN - BTM
1 stop6h 00mDelta
Deal found 7/29$254
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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 10/282:00 pmBIL - SAN
1 stop7h 56mAlaska Airlines
Wed 11/51:41 pmSAN - BIL
2 stops9h 26mAlaska Airlines
Deal found 7/29$254
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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 10/281:42 pmBZN - SAN
1 stop8h 32mAlaska Airlines
Wed 11/52:47 pmSAN - BZN
2 stops8h 28mAlaska Airlines
Deal found 7/29$258
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 9/136:00 amBIL - SAN
1 stop7h 56mHawaiian Airlines
Sat 9/2011:46 amSAN - BIL
1 stop5h 52mHawaiian Airlines
Deal found 7/29$261
This Mytrip deal was found by Cheapflights users on 7/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/296:07 pmGTF - SAN
1 stop14h 14mMultiple Airlines
Mon 9/16:15 amSAN - GTF
1 stop10h 02mMultiple Airlines
Deal found 7/29$264

Cheapflights Fare Finder

 
Customize your flight search to find flights from Montana to San Diego 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 July 31, 2025.
Use the filters below to find and compare flights from Montana to San Diego that are best for you.

Fly from

Montana

Fly to

San Diego

Route

Depart

Return

Price

KalispellSan Diego

FCA - SAN

FCASAN

Kalispell Glacier Park

Thu 9/11

5:33 pm-11:24 pm

1 stop6h 51m

San Diego

Sun 9/14

6:15 am-4:43 pm

1 stop9h 28m

$152

BozemanSan Diego

BZN - SAN

BZNSAN

Bozeman Gallatin Field

Wed 10/29

2:43 pm-8:54 pm

1 stop7h 11m

San Diego

Sun 11/2

5:45 am-12:35 pm

1 stop5h 50m

$177

BozemanSan Diego

BZN - SAN

BZNSAN

Bozeman Gallatin Field

Fri 8/29

5:00 pm-11:15 pm

1 stop7h 15m

San Diego

Tue 9/2

11:20 am-4:50 pm

1 stop4h 30m

$197

MissoulaSan Diego

MSO - SAN

MSOSAN

Missoula Johnson-Bell Field

Fri 8/29

10:27 pm-7:21 am

1 stop9h 54m

San Diego

Mon 9/1

6:15 am-7:31 pm

1 stop12h 16m

$206

BozemanSan Diego

BZN - SAN

BZNSAN

Bozeman Gallatin Field

Sun 10/26

6:20 pm-11:48 pm

1 stop6h 28m

San Diego

Wed 11/5

3:15 pm-10:14 pm

1 stop5h 59m

$237

MissoulaSan Diego

MSO - SAN

MSOSAN

Missoula Johnson-Bell Field

Thu 9/18

3:33 pm-11:42 pm

1 stop9h 09m

San Diego

Mon 9/22

5:05 pm-12:18 am

1 stop6h 13m

$241

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Fri 8/15

9:12 pm-7:21 am

1 stop11h 09m

San Diego

Mon 8/18

6:15 am-9:07 pm

1 stop13h 52m

$250

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Tue 10/28

2:00 pm-8:56 pm

1 stop7h 56m

San Diego

Wed 11/5

1:41 pm-12:07 am

2 stops9h 26m

$254

ButteSan Diego

BTM - SAN

BTMSAN

Butte Silver Bow Co

Fri 11/7

6:10 pm-11:48 pm

1 stop6h 38m

San Diego

Tue 11/11

10:05 am-5:05 pm

1 stop6h 00m

$254

BozemanSan Diego

BZN - SAN

BZNSAN

Bozeman Gallatin Field

Tue 10/28

1:42 pm-9:14 pm

1 stop8h 32m

San Diego

Wed 11/5

2:47 pm-12:15 am

2 stops8h 28m

$258

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 57 results
1
2
3
...
6

Best time to book a flight from Montana to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Montana 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 Montana to San Diego

What is the cheapest month to book a flight from Montana to San Diego?

Currently, August is the cheapest month in which you can book a flight from Montana to San Diego (average of $286). Flying from Montana to San Diego in March is currently the most expensive (average of $366). 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 MT to SAN?

Find hourly flight availability from Montana to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 31, 2025.

When flying from Montana to San Diego, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. 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 San Diego. Reviews last updated July 31, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from Montana to San Diego by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Entertainment

7.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Entertainment

7.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,241 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Entertainment

7.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Entertainment

7.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Entertainment

7.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Entertainment

7.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Montana to San Diego. 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 into for flights to San Diego from Montana?

    Located just 2.6 mi from the city center, San Diego (SAN) is the airport most travelers will use when flying to San Diego from Montana.

  • What are the cheapest airlines to fly from Montana to San Diego one-way?

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $106. Users have also found prices from $115 and $119 on Frontier and Delta, respectively.

  • What are the most popular routes from Montana to San Diego?

    The most popular flight routes from Montana to San Diego are Bozeman Gallatin Field - San Diego, Missoula Johnson-Bell Field - San Diego and Kalispell Glacier Park - San Diego.

  • What are the most reliable airlines from Montana to San Diego?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Montana to San Diego on time: SkyWest Airlines (79%), American Airlines (79%), Alaska Airlines (79%).

  • What are the cheapest flights from Montana to San Diego?

    On average you can expect to pay $238 for a flight from Montana to San Diego. The cheapest flight overall is $138 while the most popular route, (Bozeman Gallatin Field - San Diego) is currently priced at $195.

  • Can I find deals for flights from Montana to San Diego that include hotel bookings?

    Yes. In addition to deals on Montana to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Montana to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Montana to San Diego.

  • Can I find deals for business class flights from Montana to San Diego?

    Yes. Cheapflights offers flight deals from Montana to San Diego 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 Montana to San Diego?

    Currently, August is the cheapest month in which you can book a flight from Montana to San Diego (average of $286). Flying from Montana to San Diego in March is currently the most expensive (average of $366). 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

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
Coronado
Poway
National City
Lemon Grove
Imperial Beach
La Mesa
Alpine

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Montana to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Los Angeles flights
John F Kennedy Intl to Las Vegas flights
Dallas/Fort Worth to Las Vegas flights
Newark to Los Angeles flights
Los Angeles to Las Vegas flights
John F Kennedy Intl to San Francisco flights
Dallas/Fort Worth to Los Angeles flights
Newark to San Francisco flights
Los Angeles to San Jose flights
Hobby to Las Vegas flights
Los Angeles to San Francisco flights
O'Hare Intl to Las Vegas flights
Newark to Las Vegas flights
Ontario to San Francisco flights
Denver to Las Vegas flights
LaGuardia to Los Angeles flights
Santa Ana to Las Vegas flights
LaGuardia to Las Vegas flights
Burbank to Las Vegas flights
Santa Ana to San Francisco flights
San Francisco to Los Angeles flights
Seattle to Los Angeles flights
Seattle to Las Vegas flights
San Jose to Los Angeles flights
Dulles Intl to Las Vegas flights
Boston to Las Vegas flights
Seattle to San Francisco flights
San Francisco to Ontario flights
San Francisco to Santa Ana flights
George Bush Intcntl to Las Vegas flights
San Francisco to Las Vegas flights
Seattle to San Diego flights
Baltimore to Las Vegas flights
Boston to Los Angeles flights
Oakland to Los Angeles flights
Dallas/Fort Worth to San Francisco flights
LaGuardia to San Francisco flights
O'Hare Intl to Los Angeles flights
San Jose to Las Vegas flights
Reagan-National to Los Angeles flights
Atlanta to Las Vegas flights
John F Kennedy Intl to Ontario flights
Fort Lauderdale to Las Vegas flights
O'Hare Intl to San Francisco flights
Santa Ana to Oakland flights
Oakland to Las Vegas flights
Newark to Burbank flights
Newark to San Diego flights
John F Kennedy Intl to San Diego flights
Dulles Intl to Los Angeles flights

Top 6 airlines flying from Montana to San Diego

Discover the top 6 airlines that operate flights from Montana to San Diego. 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$176Average$395FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$194Average$314FlexibilityNo cancel feeOn-time63%
DeltaCheapest$216Average$392FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$216Average$369FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$220Average$347FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$286Average$355FlexibilityNo cancel feeOn-time85%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.