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Cheap flights from Billings to San Diego from $137

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Billings to San Diego departing on 10/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Billings to San Diego

Cheap round-trip flights

Delta Logo
6:24 pm - 12:03 amBIL-SAN
6h 39m1 stop
Delta Logo
4:55 pm - 12:22 amSAN-BIL
6h 27m1 stop
$273Delta
Find Deal
Tue, Dec 9 - Tue, Dec 16
Hawaiian Airlines Logo
2:00 pm - 8:56 pmBIL-SAN
7h 56m1 stop
Hawaiian Airlines Logo
3:43 pm - 12:07 amSAN-BIL
7h 24m1 stop
$274Hawaiian Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
Delta Logo
5:15 am - 3:23 pmBIL-SAN
11h 08m2 stops
Delta Logo
2:08 pm - 11:45 pmSAN-BIL
8h 37m1 stop
$278Delta
Find Deal
Tue, Dec 9 - Tue, Dec 16
Delta Logo
5:15 am - 2:16 pmBIL-SAN
10h 01m2 stops
Delta Logo
4:55 pm - 12:22 amSAN-BIL
6h 27m1 stop
$281Delta
Find Deal
Mon, Dec 8 - Tue, Dec 16
Alaska Airlines Logo
3:35 pm - 8:06 pmBIL-SAN
5h 31m1 stop
Alaska Airlines Logo
9:40 am - 10:43 pmSAN-BIL
12h 03m1 stop
$292Alaska Airlines
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Mon, Feb 2 - Thu, Feb 5
Multiple Airlines Logo
6:31 pm - 1:26 pmBIL-SAN
19h 55m1 stop
Multiple Airlines Logo
8:11 am - 5:41 pmSAN-BIL
8h 30m1 stop
$315Multiple Airlines
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Fri, Oct 24 - Mon, Oct 27
Alaska Airlines Logo
2:00 pm - 8:56 pmBIL-SAN
7h 56m1 stop
Alaska Airlines Logo
8:45 pm - 1:20 pmSAN-BIL
15h 35m1 stop
$320Alaska Airlines
Find Deal
Thu, Oct 30 - Sun, Nov 2
United Airlines Logo
2:30 pm - 12:15 amBIL-SAN
10h 45m2 stops
United Airlines Logo
11:08 am - 10:46 pmSAN-BIL
10h 38m2 stops
$381United Airlines
Find Deal
Wed, Oct 1 - Sun, Oct 5
United Airlines Logo
2:30 pm - 12:15 amBIL-SAN
10h 45m2 stops
United Airlines Logo
4:10 pm - 10:49 pmSAN-BIL
5h 39m1 stop
$403United Airlines
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Fri, Oct 24 - Mon, Oct 27
Multiple Airlines Logo
9:24 am - 11:59 pmBIL-SAN
15h 35m2 stops
Multiple Airlines Logo
3:49 pm - 9:05 amSAN-BIL
16h 16m1 stop
$421Multiple Airlines
Find Deal
Thu, Nov 27 - Sun, Nov 30

Alaska Airlines flights from Billings to San Diego

Our best Alaska Airlines deals on Billings to San Diego flight tickets
Alaska Airlines
Feb 2
BIL3:35 pmBillings Logan Intl
5h 31m
1 stop
SAN8:06 pmSan Diego
Feb 5
SAN9:40 amSan Diego
12h 03m
1 stop
BIL10:43 pmBillings Logan Intl
$292
Find similar
Alaska Airlines
Oct 30
BIL2:00 pmBillings Logan Intl
7h 56m
1 stop
SAN8:56 pmSan Diego
Nov 2
SAN8:45 pmSan Diego
15h 35m
1 stop
BIL1:20 pmBillings Logan Intl
$320
Find similar
Alaska Airlines
Oct 24
BIL7:15 pmBillings Logan Intl
16h 37m
1 stop
SAN10:52 amSan Diego
Oct 26
SAN7:00 amSan Diego
5h 20m
1 stop
BIL1:20 pmBillings Logan Intl
$348
Find similar

Delta flights from Billings to San Diego

Our best Delta deals on Billings to San Diego flight tickets
Delta
Dec 9
BIL6:24 pmBillings Logan Intl
6h 39m
1 stop
SAN12:03 amSan Diego
Dec 16
SAN4:55 pmSan Diego
6h 27m
1 stop
BIL12:22 amBillings Logan Intl
$273
Find similar
Delta
Dec 9
BIL5:15 amBillings Logan Intl
11h 08m
2 stops
SAN3:23 pmSan Diego
Dec 16
SAN2:08 pmSan Diego
8h 37m
1 stop
BIL11:45 pmBillings Logan Intl
$278
Find similar
Delta
Dec 8
BIL5:15 amBillings Logan Intl
10h 01m
2 stops
SAN2:16 pmSan Diego
Dec 16
SAN4:55 pmSan Diego
6h 27m
1 stop
BIL12:22 amBillings Logan Intl
$281
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated September 17, 2025.
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

Tue 12/9

6:24 pm-12:03 am

1 stop6h 39m

San Diego

Tue 12/16

4:55 pm-12:22 am

1 stop6h 27m

$273

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Thu 10/30

2:00 pm-8:56 pm

1 stop7h 56m

San Diego

Thu 11/6

3:43 pm-12:07 am

1 stop7h 24m

$274

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Tue 12/9

5:15 am-3:23 pm

2 stops11h 08m

San Diego

Tue 12/16

2:08 pm-11:45 pm

1 stop8h 37m

$278

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

4:55 pm-12:22 am

1 stop6h 27m

$281

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Mon 2/2

3:35 pm-8:06 pm

1 stop5h 31m

San Diego

Thu 2/5

9:40 am-10:43 pm

1 stop12h 03m

$292

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Fri 10/24

6:31 pm-1:26 pm

1 stop19h 55m

San Diego

Mon 10/27

8:11 am-5:41 pm

1 stop8h 30m

$315

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Thu 10/30

2:00 pm-8:56 pm

1 stop7h 56m

San Diego

Sun 11/2

8:45 pm-1:20 pm

1 stop15h 35m

$320

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Wed 10/1

2:30 pm-12:15 am

2 stops10h 45m

San Diego

Sun 10/5

11:08 am-10:46 pm

2 stops10h 38m

$381

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Fri 10/24

2:30 pm-12:15 am

2 stops10h 45m

San Diego

Mon 10/27

4:10 pm-10:49 pm

1 stop5h 39m

$403

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Thu 11/27

9:24 am-11:59 pm

2 stops15h 35m

San Diego

Sun 11/30

3:49 pm-9:05 am

1 stop16h 16m

$421

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Diego from

How to get the cheapest flight ticket from Billings to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Diego?

If you are unable to visit San Diego during the month of January, then departing from Billings during the month October is also very affordable. Most momondo users find prices during this month for around $310.

What is the cheapest day to depart on your flight to San Diego?

The cheapest day to depart from Billings to San Diego is on a Friday. Travelers who choose to depart for San Diego on a Friday will often find tickets for as low as $387. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $497. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.

What is the cheapest time of day to depart on your flight to San Diego?

The cheapest time of day to fly to San Diego is at noon when flights can be purchased for as low as $335. Flights in the morning are often more expensive with an average ticket price of $429.

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

You are more likely to see cheaper flights to San Diego from Billings when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $378 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from Billings for as low as $295 on momondo.

How have Billings to San Diego flight prices changed over time?

As of September 2025, prices for Billings to San Diego flights are approximately 45% cheaper when compared to flights at the same time last year.

When to book flights from Billings to San Diego

Are you open to changing your travel dates? Check out the ideal times to fly from Billings to San Diego according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Billings to San Diego (BIL to SAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Billings to San Diego

Direct flights

None
There are no direct flights from Billings to San Diego. There are no popular flight routes from Billings to San Diego.
Search flight deals

  • How far is Billings Logan Intl to San Diego by plane?

    The distance between Billings Logan Intl and San Diego is about 1012.6 mi. Typically, this will take 4h 15m by plane in normal conditions.

  • When did momondo last update prices for flights from Billings Logan Intl Airport to San Diego Airport?

    Prices for flights from Billings Logan Intl Airport to San Diego Airport are updated daily.

  • How many operators does momondo search for flights from Billings Logan Intl Airport to San Diego Airport?

  • How old do you have to be to fly from Billings Logan Intl Airport to San Diego Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Billings Logan Intl Airport to San Diego Airport.

  • What documentation or ID do you need to fly to San Diego Airport?

    The required travel and health documents for your San Diego Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Diego Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Billings to San Diego?

Best airlines flying from Billings to San Diego

Compare and see reviews for airlines that fly from Billings to San Diego with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $220Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $258Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $274Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
DeltaPriceFrom $274Free CancellationRating
7.9
7,961 reviews
Search Delta flights

Traveling to a place near San Diego?

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

Why use momondo?

Why should I use momondo to find a flight deal from Billings to San Diego?

It is quick and easy to find Billings to San Diego flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Diego that suits you.

Can I find flights from Billings to San Diego with flexible booking policies on momondo?

Yes. All flights to San Diego from Billings on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Billings to San Diego?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Diego from Billings.

I’m not ready to book a flight from Billings to San Diego right now. Can momondo alert me if prices change?

Price alerts on flights to San Diego from Billings are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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