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$91+ 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 6/25. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — SAN
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$200
(Mytrip)

One-way from

$91
(Mytrip)

Popular in

July

Cheapest in

January

Average price

$488
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. 15% potential increase in price ($74 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/2710:24 pmBIL - SAN
1 stop26h 05mMultiple Airlines
Tue 7/17:31 pmSAN - BIL
1 stop20h 51mMultiple Airlines
Deal found 6/10$200
This Delta deal was found by Cheapflights users on 6/9. 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.
Sat 8/165:25 amBIL - SAN
1 stop4h 14mDelta
Sat 8/235:02 pmSAN - BIL
1 stop5h 00mDelta
Deal found 6/9$267
This American Airlines deal was found by Cheapflights users on 6/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/167:00 amBIL - SAN
2 stops9h 25mAmerican Airlines
Sat 8/231:52 pmSAN - BIL
1 stop6h 38mAmerican Airlines
Deal found 6/9$272
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/257:18 pmBIL - SAN
1 stop15h 56mAlaska Airlines
Sun 9/287:00 amSAN - BIL
1 stop5h 24mAlaska Airlines
Deal found 6/11$312
This United Airlines deal was found by Cheapflights users on 6/12. 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 8/74:15 pmBIL - SAN
1 stop6h 59mUnited Airlines
Mon 8/116:45 amSAN - BIL
1 stop7h 39mUnited Airlines
Deal found 6/12$328
This Hawaiian Airlines deal was found by Cheapflights users on 6/12. 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.
Thu 6/262:03 pmBIL - SAN
1 stop7h 51mHawaiian Airlines
Sun 6/293:35 pmSAN - BIL
1 stop7h 33mHawaiian Airlines
Deal found 6/12$734

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 June 12, 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

Fri 6/27

10:24 pm-11:29 pm

1 stop26h 05m

San Diego

Tue 7/1

7:31 pm-5:22 pm

1 stop20h 51m

$200

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Sat 8/16

5:25 am-8:39 am

1 stop4h 14m

San Diego

Sat 8/23

5:02 pm-11:02 pm

1 stop5h 00m

$267

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Sat 8/16

7:00 am-3:25 pm

2 stops9h 25m

San Diego

Sat 8/23

1:52 pm-9:30 pm

1 stop6h 38m

$272

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Thu 9/25

7:18 pm-10:14 am

1 stop15h 56m

San Diego

Sun 9/28

7:00 am-1:24 pm

1 stop5h 24m

$312

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Thu 8/7

4:15 pm-10:14 pm

1 stop6h 59m

San Diego

Mon 8/11

6:45 am-3:24 pm

1 stop7h 39m

$328

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Thu 6/26

2:03 pm-8:54 pm

1 stop7h 51m

San Diego

Sun 6/29

3:35 pm-12:08 am

1 stop7h 33m

$734

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Wed 6/25

6:39 pm-11:29 pm

1 stop5h 50m

$91

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Thu 7/24

4:15 pm-10:14 pm

1 stop6h 59m

$146

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Tue 7/15

5:20 am-12:50 pm

2 stops8h 30m

$151

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Thu 7/24

10:04 pm-6:10 pm

2 stops21h 06m

$207

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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 June 9, 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 June 12, 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.

Rainfall in San Diego by month

Plan your trip to San Diego by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Diego ranges from 0.0 - 2.3 inches per month. February is typically the wettest month, when rainfall can reach 2.3 in. July is typically the driest time to visit San Diego when rainfall is around 0.0 in.

Temperature in San Diego by month

Plan your trip to San Diego by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

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 June 12, 2025.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

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

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

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
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

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
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

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
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Allegiant Air
7.3
Good
725 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

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 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.

  • 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 $267. Other airlines that can offer you cheap pricing are American Airlines, from $272, and Alaska Airlines, from $312. These flights start at 33% 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 United Airlines, which is currently one of the cheapest options available, starting at $146. Delta flights start at $151 while deals on Allegiant Air start at $207 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 Billings?

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

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$220Average$347FlexibilityNo cancel feeOn-time71%
DeltaCheapest$254Average$365FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$258Average$409FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$274Average$448FlexibilityNo cancel feeOn-time69%

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