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$174+ Cheap flights from Billings to San Diego (BIL - 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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — SAN
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Billings Logan Intl to San Diego are usually found in January or October, booked 37 days in advance, depart on a Friday or Saturday and return on a Tuesday

Cheap flight deals from Billings to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Billings (BIL) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$241
(Kiwi.com)

One-way from

$174
(Alaska Airlines)

Popular in

June

Cheapest in

January

Average price

$420
From Billings Logan Intl to San Diego
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One-way flight from Billings Logan Intl to San Diego
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Highest demand for flights based on searches. 5% potential increase in price ($22 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 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 Billings to San Diego

Cheapest flights from Billings to San Diego
Explore the most affordable flight options available from Billings to San Diego. 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 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/812:11 pmBIL - SAN
1 stop20h 15mMultiple Airlines
Sun 10/124:06 pmSAN - BIL
1 stop16h 06mMultiple Airlines
Deal found 9/10$241
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/99:35 pmBIL - SAN
1 stop15h 42mMultiple Airlines
Sun 10/126:25 amSAN - BIL
1 stop25h 47mMultiple Airlines
Deal found 9/10$260
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1911:14 amBIL - SAN
1 stop10h 10mMultiple Airlines
Sun 11/238:34 amSAN - BIL
1 stop23h 20mMultiple Airlines
Deal found 9/10$263
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.
Sat 11/12:00 pmBIL - SAN
1 stop6h 12mHawaiian Airlines
Wed 11/57:00 amSAN - BIL
1 stop5h 20mHawaiian Airlines
Deal found 9/10$272
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/122:00 pmBIL - SAN
1 stop7h 56mAlaska Airlines
Wed 12/32:09 pmSAN - BIL
1 stop8h 59mAlaska Airlines
Deal found 9/10$273
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/12:30 pmBIL - SAN
2 stops9h 11mDelta
Wed 11/55:25 pmSAN - BIL
1 stop4h 00mDelta
Deal found 9/10$278
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/143:40 pmBIL - SAN
1 stop5h 49mAlaska Airlines
Tue 12/24:25 pmSAN - BIL
1 stop6h 43mAlaska Airlines
Deal found 9/10$283
This Delta deal was found by Cheapflights users on 9/11. 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 12/85:15 amBIL - SAN
2 stops10h 01mDelta
Tue 12/164:55 pmSAN - BIL
1 stop6h 27mDelta
Deal found 9/11$288
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/186:00 amBIL - SAN
2 stops9h 07mAlaska Airlines
Wed 12/32:09 pmSAN - BIL
1 stop8h 59mAlaska Airlines
Deal found 9/10$289
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/143:40 pmBIL - SAN
1 stop5h 49mAlaska Airlines
Sun 11/168:45 pmSAN - BIL
1 stop15h 35mAlaska Airlines
Deal found 9/10$292
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/195:18 amBIL - SAN
2 stops11h 06mDelta
Sun 11/235:10 pmSAN - BIL
1 stop5h 39mDelta
Deal found 9/10$297

Cheapflights Fare Finder

 
Customize your flight search to find flights from Billings 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 September 11, 2025.
Use the filters below to find and compare flights from Billings to San Diego that are best for you.

Fly from

Billings

Fly to

San Diego

Route

Depart

Return

Price

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Tue 11/18

3:40 pm-8:38 pm

1 stop5h 58m

San Diego

Tue 12/2

2:09 pm-12:08 am

1 stop8h 59m

$273

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Fri 11/14

3:40 pm-8:29 pm

1 stop5h 49m

San Diego

Tue 12/2

4:25 pm-12:08 am

1 stop6h 43m

$283

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Mon 11/17

2:00 pm-7:12 pm

1 stop6h 12m

San Diego

Tue 12/2

4:25 pm-12:08 am

1 stop6h 43m

$283

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Mon 12/8

5:15 am-2:16 pm

2 stops10h 01m

San Diego

Tue 12/16

7:07 pm-12:22 am

1 stop4h 15m

$288

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Fri 11/14

3:40 pm-8:29 pm

1 stop5h 49m

San Diego

Mon 11/17

7:00 am-1:20 pm

1 stop5h 20m

$292

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Wed 2/25

3:35 pm-8:06 pm

1 stop5h 31m

San Diego

Sat 3/7

9:40 am-10:43 pm

1 stop12h 03m

$294

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Wed 2/25

5:40 am-6:00 pm

2 stops13h 20m

San Diego

Sat 3/7

5:00 pm-10:37 pm

1 stop4h 37m

$300

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Sun 11/16

5:18 am-12:46 pm

2 stops8h 28m

San Diego

Sat 11/22

5:30 pm-11:10 pm

1 stop4h 40m

$310

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Sat 11/15

2:00 pm-7:06 pm

1 stop6h 06m

San Diego

Wed 12/3

12:43 pm-12:08 am

2 stops10h 25m

$310

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Tue 3/10

5:40 am-9:11 am

1 stop4h 31m

San Diego

Wed 3/11

5:00 pm-10:37 pm

1 stop4h 37m

$311

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 17 results
1
2

Best time to book a flight from Billings to San Diego

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

How far ahead should I book a flight from Billings to San Diego?

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

Booking 37 days in advance of your planned departure date is, on average, the best time to get cheap flights from Billings to San Diego. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, August is the cheapest month in which you can book a flight from Billings to San Diego (average of $286). Flying from Billings 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 BIL to SAN?

Find hourly flight availability from Billings 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 September 11, 2025.

It’s optimal to fly from Billings to San Diego at noon. By choosing this option you can save up to 22% on the cost of your flight, compared to a flight in the morning.

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 September 11, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and United Airlines from Billings to San Diego have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

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

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

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

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

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.
United Airlines
7.4
Good
8,937 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

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.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

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 Billings to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Billings to San Diego?

    For as low as $273, Alaska Airlines can have you in San Diego from Billings in 5h 58m. Billings and San Diego are separated by a distance of 1013 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Billings to San Diego round-trip?

    Cheapflights users have booked flights from Billings to San Diego round-trip from $220. Other airlines that can offer you cheap pricing are Alaska Airlines, from $258, and United Airlines, from $274. These flights start at 42% lower than the current average price 3 months from now.

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

    To fly one-way, consider booking your trip with Alaska Airlines, which is currently one of the cheapest options available, starting at $174. Delta flights start at $186 while deals on Hawaiian Airlines start at $235 one-way.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Billings to San Diego (average of $286). Flying from Billings 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
La Mesa
Poway
Lemon Grove
Coronado
Imperial Beach
National City
Alpine

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Top 4 airlines flying from Billings to San Diego

Discover the top 4 airlines that operate flights from Billings 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$220Average$347FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$258Average$409FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$274Average$424FlexibilityNo cancel feeOn-time69%
DeltaCheapest$274Average$358FlexibilityNo cancel feeOn-timeN/A

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