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 $272. Other airlines that can offer you cheap pricing are American Airlines, from $297, and United Airlines, from $302. These flights start at 33% lower than the current average price 3 months from now.

What is the cheapest day to fly from Billings to San Diego?

Travelers seeking maximum savings on their Billings to San Diego flight should consider departing on Saturday at noon when fares are most often at their lowest. Wednesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from Billings to San Diego?

The most popular airlines flying from Billings to San Diego are American Airlines, Alaska Airlines and Delta. Something to consider prior to booking your flight.

What is the cheapest day to fly round-trip from Billings to San Diego?

Flying to your destination on a Sunday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to San Diego. Check prices with Cheapflights to find a great deal for your trip.

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

To save up to 98% on this flight, we recommend booking at least 42 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Billings to San Diego from $545 1-2 weeks out and tickets from $759 for flights departing within the next 72 hours.

What is the cheapest month to fly from Billings to San Diego?

Our data shows that January tends to be the cheapest month to fly to San Diego from Billings. Users have commonly found prices around $411 for the month, but tickets can be as low as $220. Due to multiple factors, prepare for potentially higher prices in July.

Most accurate provider : When it comes to deals on Billings-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Billings-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Billings-San Diego flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Billings-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Billings-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

$173+ Save on Flights from Billings to San Diego

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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.

Cheapflights Tip: The best prices from Billings Logan Intl to San Diego are usually found in January or February, booked 63 days in advance, depart on a Friday or Saturday and return on a Tuesday

Cheap flight deals from Billings to San Diego

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$173 (Mytrip)
Popular in	July
Cheapest in	January
Average price	$409

Provider with most accurate pricing for Billings Logan Intl-San Diego flight deals.

Search Deals

Provider most trusted by Cheapflights users for Billings Logan Intl-San Diego flights.

Search Deals

From Billings Logan Intl to San Diego

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($38 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 2025

Search Deals

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 March 25, 2025.

Mon 4/710:09 amBIL - SAN

1 stop22h 07mMultiple Airlines

Fri 4/116:15 amSAN - BIL

1 stop6h 45mMultiple Airlines

Deal found 3/23

$173

Wed 5/145:59 pmBIL - SAN

1 stop6h 54mDelta

Mon 5/197:18 pmSAN - BIL

1 stop4h 01mDelta

Deal found 3/23

$272

Wed 6/41:58 pmBIL - SAN

1 stop7h 48mAmerican Airlines

Wed 6/111:00 pmSAN - BIL

1 stop8h 56mAmerican Airlines

Deal found 3/24

$297

Tue 7/17:00 amBIL - SAN

1 stop6h 52mUnited Airlines

Tue 7/810:43 amSAN - BIL

2 stops11h 04mUnited Airlines

Deal found 3/23

$302

Wed 5/143:47 pmBIL - SAN

2 stops16h 52mAlaska Airlines

Mon 5/197:57 pmSAN - BIL

2 stops16h 20mAlaska Airlines

Deal found 3/23

$361

Mon 3/242:55 pmBIL - SAN

1 stop7h 35mHawaiian Airlines

Mon 3/314:00 pmSAN - BIL

1 stop6h 19mHawaiian Airlines

Deal found 3/24

$575

Best flights from Billings to San Diego
Discover carefully curated flight deals from Billings to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 25, 2025.

Mon 4/710:09 amBIL - SAN

1 stop22h 07mMultiple Airlines

Fri 4/116:15 amSAN - BIL

1 stop6h 45mMultiple Airlines

Deal found 3/23

$173

Wed 5/145:59 pmBIL - SAN

1 stop6h 54mDelta

Mon 5/197:18 pmSAN - BIL

1 stop4h 01mDelta

Deal found 3/23

$272

Wed 6/41:58 pmBIL - SAN

1 stop7h 48mAmerican Airlines

Wed 6/111:00 pmSAN - BIL

1 stop8h 56mAmerican Airlines

Deal found 3/24

$297

Tue 7/17:00 amBIL - SAN

1 stop6h 52mUnited Airlines

Tue 7/810:43 amSAN - BIL

2 stops11h 04mUnited Airlines

Deal found 3/23

$302

Wed 5/143:47 pmBIL - SAN

2 stops16h 52mAlaska Airlines

Mon 5/197:57 pmSAN - BIL

2 stops16h 20mAlaska Airlines

Deal found 3/23

$361

Last-minute flights from Billings to San Diego
Discover last-minute flight deals from Billings to San Diego. Data last updated March 25, 2025 and is based on user searches.

Mon 3/242:55 pmBIL - SAN

1 stop7h 35mHawaiian Airlines

Mon 3/314:00 pmSAN - BIL

1 stop6h 19mHawaiian Airlines

Deal found 3/24

$575

Mon 3/316:26 pmBIL - SAN

1 stop6h 27mDelta

Sat 4/126:15 amSAN - BIL

2 stops9h 46mDelta

Deal found 3/22

$398

Mon 3/312:40 pmBIL - SAN

2 stops10h 19mUnited Airlines

Sat 4/1210:16 amSAN - BIL

2 stops9h 42mUnited Airlines

Deal found 3/22

$483

Tue 4/17:45 amBIL - SAN

1 stop6h 02mAlaska Airlines

Wed 4/96:15 amSAN - BIL

1 stop6h 23mAlaska Airlines

Deal found 3/22

$450

Sat 4/55:20 amBIL - SAN

1 stop4h 41mDelta

Sat 4/126:15 amSAN - BIL

2 stops9h 46mDelta

Deal found 3/22

$378

Mon 4/710:09 amBIL - SAN

1 stop22h 07mMultiple Airlines

Fri 4/116:15 amSAN - BIL

1 stop6h 45mMultiple Airlines

Deal found 3/23

$173

Thu 4/105:00 amBIL - SAN

1 stop5h 24mUnited Airlines

Thu 4/177:09 amSAN - BIL

1 stop5h 09mUnited Airlines

Deal found 3/24

$423

One-way flights from Billings to San Diego
Search for one-way flight options from Billings to San Diego. Find affordable one-way fares based on user searches. Data last updated March 25, 2025.

Fri 5/26:26 pmBIL - SAN

1 stop6h 17mDelta

Deal found 3/24

$268

Fri 5/27:00 amBIL - SAN

2 stops17h 59mUnited Airlines

Deal found 3/24

$472

Cheapflights Fare Finder

Use the filters below to find and compare flights from Billings to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Mon 4/7

10:09 am-7:16 am

1 stop22h 07m

San Diego

Fri 4/11

6:15 am-2:00 pm

1 stop6h 45m

$173

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Wed 5/14

5:59 pm-11:53 pm

1 stop6h 54m

San Diego

Mon 5/19

7:18 pm-12:19 am

1 stop4h 01m

$272

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Wed 6/4

1:58 pm-8:46 pm

1 stop7h 48m

San Diego

Wed 6/11

1:00 pm-10:56 pm

1 stop8h 56m

$297

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Tue 7/1

7:00 am-12:52 pm

1 stop6h 52m

San Diego

Tue 7/8

10:43 am-10:47 pm

2 stops11h 04m

$302

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Wed 5/14

3:47 pm-7:39 am

2 stops16h 52m

San Diego

Mon 5/19

7:57 pm-1:17 pm

2 stops16h 20m

$361

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Fri 5/2

6:26 pm-11:43 pm

1 stop6h 17m

$268

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Fri 5/2

7:00 am-11:59 pm

2 stops17h 59m

$472

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Compare providers for flights from Billings to San Diego

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Billings to San Diego in March.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Billings-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Billings-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Billings-San Diego flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Billings-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Billings-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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?

Booking 62 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?

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

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

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

Read through reviews of airlines operating flights from Billings to San Diego, such as Alaska Airlines, Delta and United Airlines. 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

9,785 reviews

Reviews

1 / 20

10.0

Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Alaska Airlines

8.0

Very good

9,785 reviews

Alaska Airlines

8.0

Very good

9,785 reviews

Reviews

1 / 20

10.0

Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Delta

8.0

Very good

7,890 reviews

Alaska Airlines

8.0

Very good

9,785 reviews

Reviews

1 / 20

10.0

Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

United Airlines

7.4

Good

8,605 reviews

Alaska Airlines

8.0

Very good

9,785 reviews

Reviews

1 / 20

10.0

Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,785 reviews

Reviews

1 / 20

10.0

Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Related info for your journey

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 $272. Other airlines that can offer you cheap pricing are American Airlines, from $297, and United Airlines, from $302. These flights start at 33% lower than the current average price 3 months from now.
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

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Other flights to San Diego

Top 4 airlines flying from Billings to San Diego

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$220	Average$347	FlexibilityNo cancel fee	On-time71%
Alaska Airlines	Cheapest$258	Average$409	FlexibilityNo cancel fee	On-time75%
United Airlines	Cheapest$274	Average$468	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$274	Average$381	FlexibilityNo cancel fee	On-timeN/A

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$173+ Cheap flights from Billings to San Diego (BIL - SAN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/7. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Billings to San Diego with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Billings Logan Intl to San Diego are usually found in January or February, booked 63 days in advance, depart on a Friday or Saturday and return on a Tuesday

Cheap flight deals from Billings to San Diego

Most accurate provider

Most trusted provider

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Billings to San Diego

Cheapest flights from Billings to San DiegoExplore 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 March 25, 2025.

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 March 25, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Billings to San Diego that are best for you.

Compare providers for flights from Billings to San Diego

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Billings to San Diego in March.

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.

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 March 21, 2025.

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

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 March 25, 2025.

Rainfall in San Diego by month

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

Temperature in San Diego by month

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

Reviews of airlines servicing San Diego

Read through reviews of airlines operating flights from Billings to San Diego, such as Alaska Airlines, Delta and United Airlines. 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.

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?

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

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

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

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

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Top 4 airlines flying from Billings to San Diego

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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 March 25, 2025.