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Cheap flights from Billings to San Diego from $124

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 3/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:14 am - 12:08 pm
BIL
-
SAN
26h 54m2 stops
Multiple Airlines Logo
2:50 pm - 9:49 am
SAN
-
BIL
17h 59m1 stop
$216Multiple Airlines
Mon, Jan 5 - Sun, Jan 11
Multiple Airlines Logo
12:20 pm - 1:51 pm
BIL
-
SAN
26h 31m1 stop
Multiple Airlines Logo
2:50 pm - 9:49 am
SAN
-
BIL
17h 59m1 stop
$231Multiple Airlines
Fri, Jan 9 - Sun, Jan 11
Alaska Airlines Logo
7:00 am - 1:19 pm
BIL
-
SAN
7h 19m1 stop
Alaska Airlines Logo
6:15 am - 11:38 pm
SAN
-
BIL
16h 23m1 stop
$245Alaska Airlines
Tue, Jan 27 - Tue, Mar 3
Alaska Airlines Logo
3:35 pm - 8:11 pm
BIL
-
SAN
5h 36m1 stop
Alaska Airlines Logo
6:15 am - 2:55 pm
SAN
-
BIL
7h 40m1 stop
$253Alaska Airlines
Fri, Jan 9 - Tue, Jan 13
Delta Logo
5:15 am - 8:50 am
BIL
-
SAN
4h 35m1 stop
Delta Logo
10:59 am - 10:26 pm
SAN
-
BIL
10h 27m2 stops
$254Delta
Tue, Jan 27 - Tue, Mar 3
Delta Logo
5:10 am - 8:45 am
BIL
-
SAN
4h 35m1 stop
Delta Logo
10:59 am - 10:26 pm
SAN
-
BIL
10h 27m2 stops
$257Delta
Wed, Feb 18 - Mon, Feb 23
Delta Logo
11:47 am - 10:42 pm
BIL
-
SAN
11h 55m2 stops
Delta Logo
10:59 am - 10:26 pm
SAN
-
BIL
10h 27m2 stops
$259Delta
Tue, Jan 27 - Tue, Mar 3
United Airlines Logo
4:13 pm - 8:42 pm
BIL
-
SAN
5h 29m1 stop
United Airlines Logo
11:08 am - 9:23 pm
SAN
-
BIL
9h 15m2 stops
$264United Airlines
Fri, Jan 9 - Sun, Jan 11
Multiple Airlines Logo
10:05 pm - 12:38 pm
BIL
-
SAN
15h 33m1 stop
Multiple Airlines Logo
2:50 pm - 9:49 am
SAN
-
BIL
17h 59m1 stop
$266Multiple Airlines
Sun, Jan 4 - Sun, Jan 11
Alaska Airlines Logo
7:00 am - 1:20 pm
BIL
-
SAN
7h 20m1 stop
Alaska Airlines Logo
7:00 am - 1:24 pm
SAN
-
BIL
5h 24m1 stop
$268Alaska Airlines
Wed, Feb 18 - Mon, Feb 23

United Airlines flights from Billings to San Diego

Our best United Airlines deals on Billings to San Diego flight tickets
United Airlines
Jan 9
BIL4:13 pmBillings Logan Intl
5h 29m
1 stop
SAN8:42 pmSan Diego
Jan 11
SAN11:08 amSan Diego
9h 15m
2 stops
BIL9:23 pmBillings Logan Intl
$264
Find similar
United Airlines
Jan 9
BIL10:52 amBillings Logan Intl
10h 02m
2 stops
SAN7:54 pmSan Diego
Jan 11
SAN11:08 amSan Diego
9h 15m
2 stops
BIL9:23 pmBillings Logan Intl
$269
Find similar
United Airlines
Jan 28
BIL2:45 pmBillings Logan Intl
10h 30m
2 stops
SAN12:15 amSan Diego
Feb 1
SAN6:30 amSan Diego
5h 54m
1 stop
BIL1:24 pmBillings Logan Intl
$274
Find similar

American Airlines flights from Billings to San Diego

Our best American Airlines deals on Billings to San Diego flight tickets
American Airlines
Dec 24
BIL6:50 amBillings Logan Intl
6h 14m
1 stop
SAN12:04 pmSan Diego
Dec 31
SAN4:25 pmSan Diego
5h 29m
1 stop
BIL10:54 pmBillings Logan Intl
$365
Find similar
American Airlines
Dec 24
BIL6:50 amBillings Logan Intl
6h 14m
1 stop
SAN12:04 pmSan Diego
Dec 31
SAN4:25 pmSan Diego
5h 29m
1 stop
BIL10:54 pmBillings Logan Intl
$389
Find similar
American Airlines
Dec 25
BIL6:50 amBillings Logan Intl
6h 14m
1 stop
SAN12:04 pmSan Diego
Dec 29
SAN4:25 pmSan Diego
5h 29m
1 stop
BIL10:54 pmBillings Logan Intl
$579
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 December 11, 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

Mon 1/5

10:14 am-12:08 pm

2 stops26h 54m

San Diego

Sun 1/11

2:50 pm-9:49 am

1 stop17h 59m

$216

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Fri 1/9

12:20 pm-1:51 pm

1 stop26h 31m

San Diego

Sun 1/11

2:50 pm-9:49 am

1 stop17h 59m

$231

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Tue 1/27

7:00 am-1:19 pm

1 stop7h 19m

San Diego

Tue 3/3

6:15 am-11:38 pm

1 stop16h 23m

$245

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Fri 1/9

3:35 pm-8:11 pm

1 stop5h 36m

San Diego

Tue 1/13

6:15 am-2:55 pm

1 stop7h 40m

$253

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Tue 1/27

5:15 am-8:50 am

1 stop4h 35m

San Diego

Tue 3/3

10:59 am-10:26 pm

2 stops10h 27m

$254

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Wed 2/18

5:10 am-8:45 am

1 stop4h 35m

San Diego

Mon 2/23

10:59 am-10:26 pm

2 stops10h 27m

$257

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Tue 1/27

11:47 am-10:42 pm

2 stops11h 55m

San Diego

Tue 3/3

10:59 am-10:26 pm

2 stops10h 27m

$259

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Fri 1/9

4:13 pm-8:42 pm

1 stop5h 29m

San Diego

Sun 1/11

11:08 am-9:23 pm

2 stops9h 15m

$264

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Sun 1/4

10:05 pm-12:38 pm

1 stop15h 33m

San Diego

Sun 1/11

2:50 pm-9:49 am

1 stop17h 59m

$266

BillingsSan Diego

BIL - SAN

BILSAN

Billings Logan Intl

Wed 2/18

7:00 am-1:20 pm

1 stop7h 20m

San Diego

Mon 2/23

7:00 am-1:24 pm

1 stop5h 24m

$268

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 February is also very affordable. Most momondo users find prices during this month for around $348.

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 have Billings to San Diego flight prices changed over time?

As of December 2025, prices for Billings to San Diego flights are approximately 1% more expensive 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

Fastest flight time

4h 38m

Direct flights

None
The fastest flight from Billings to San Diego takes 4h 38m
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 38m 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
11,050 reviews
Search American Airlines flights
DeltaPriceFrom $244Free CancellationRating
7.9
8,007 reviews
Search Delta flights
Alaska AirlinesPriceFrom $253Free CancellationRating
8.0
11,432 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $310Free CancellationRating
7.4
9,095 reviews
Search United Airlines 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
National City
Imperial Beach
Poway
La Mesa
Borrego Springs
San Ysidro
Alpine
Lemon Grove
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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