$178+ 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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — SAN
Nov 22 — Nov 291
Round-trip
1 adult, Economy
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Find cheap flights from Billings to San Diego with Cheapflights
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.Cheap flight deals from Billings to San Diego
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Best
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One-way
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 October 23, 2026.
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 October 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 11/2510:11 pm -
1 stop10h 44m
Tue 12/112:32 pm -
1 stop26h 36m
Deal found 10/22![Multiple Airlines logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 10/19. 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.
Fri 11/205:57 pm -
1 stop14h 58m
Wed 11/258:50 am -
1 stop11h 31m
Deal found 10/19![Multiple Airlines logo]()
$295
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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 11/125:12 pm -
1 stop7h 25m
Mon 11/168:07 pm -
1 stop17h 45m
Deal found 10/22![Alaska Airlines logo]()
$391
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Wed 11/185:00 am -
2 stops7h 31m
Tue 12/16:45 am -
1 stop5h 39m
Deal found 10/20![United Airlines logo]()
$404
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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 11/203:33 pm -
1 stop5h 53m
Wed 11/252:55 pm -
1 stop8h 03m
Deal found 10/22![Alaska Airlines logo]()
$411
This Alaska Airlines deal was found by Cheapflights users on 10/20. 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 11/55:12 pm -
1 stop7h 25m
Mon 11/91:48 pm -
1 stop7h 55m
Deal found 10/20![Alaska Airlines logo]()
$426
Best flights from Billings to San DiegoDiscover 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 October 23, 2026.
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 October 23, 2026.
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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 1/287:00 am -
1 stop6h 56m
Sun 1/315:18 pm -
2 stops19h 36m
Deal found 10/22![Alaska Airlines logo]()
$394
This United Airlines deal was found by Cheapflights users on 10/19. 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 1/282:38 pm -
2 stops9h 03m
Mon 2/16:45 am -
1 stop5h 45m
Deal found 10/19![United Airlines logo]()
$396
This Delta deal was found by Cheapflights users on 10/18. 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 1/185:45 am -
1 stop4h 21m
Fri 1/229:45 am -
1 stop7h 04m
Deal found 10/18![Delta logo]()
$411
This Alaska Airlines deal was found by Cheapflights users on 10/19. 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.
Sat 1/307:00 am -
1 stop6h 56m
Wed 2/33:49 pm -
1 stop7h 02m
Deal found 10/19![Alaska Airlines logo]()
$407
This United Airlines deal was found by Cheapflights users on 10/22. 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.
Mon 1/184:13 pm -
1 stop5h 29m
Fri 1/229:39 am -
2 stops10h 36m
Deal found 10/22![United Airlines logo]()
$416
This Alaska Airlines deal was found by Cheapflights users on 10/23. 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 11/203:33 pm -
1 stop5h 53m
Wed 11/252:55 pm -
1 stop8h 03m
Deal found 10/23![Alaska Airlines logo]()
$411
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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 1/16:00 am -
1 stop27h 49m
Tue 1/54:50 pm -
1 stop6h 01m
Deal found 10/22![Alaska Airlines logo]()
$412
Last-minute flights from Billings to San DiegoDiscover last-minute flight deals from Billings to San Diego. Data last updated October 23, 2026 and is based on user searches.
Discover last-minute flight deals from Billings to San Diego. Data last updated October 23, 2026 and is based on user searches.
This Alaska Airlines deal was found by Cheapflights users on 10/20. 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 11/55:12 pm -
1 stop7h 25m
Mon 11/91:48 pm -
1 stop7h 55m
Deal found 10/20![Alaska Airlines logo]()
$426
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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 11/125:12 pm -
1 stop7h 25m
Mon 11/168:07 pm -
1 stop17h 45m
Deal found 10/22![Alaska Airlines logo]()
$391
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Wed 11/185:00 am -
2 stops7h 31m
Tue 12/16:45 am -
1 stop5h 39m
Deal found 10/20![United Airlines logo]()
$404
This Kiwi.com deal was found by Cheapflights users on 10/19. 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.
Fri 11/205:57 pm -
1 stop14h 58m
Wed 11/258:50 am -
1 stop11h 31m
Deal found 10/19![Multiple Airlines logo]()
$295
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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 11/203:33 pm -
1 stop5h 53m
Wed 11/252:55 pm -
1 stop8h 03m
Deal found 10/22![Alaska Airlines logo]()
$411
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 11/2510:11 pm -
1 stop10h 44m
Tue 12/112:32 pm -
1 stop26h 36m
Deal found 10/22![Multiple Airlines logo]()
$284
One-way flights from Billings to San DiegoSearch for one-way flight options from Billings to San Diego. Find affordable one-way fares based on user searches. Data last updated October 23, 2026.
Search for one-way flight options from Billings to San Diego. Find affordable one-way fares based on user searches. Data last updated October 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/18. 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.
Fri 12/46:44 pm -
1 stop23h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/18![Multiple Airlines logo]()
$178
This United Airlines deal was found by Cheapflights users on 10/18. 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 12/34:04 pm -
1 stop7h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/18![United Airlines logo]()
$196
This Delta deal was found by Cheapflights users on 10/21. 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 12/56:21 pm -
1 stop5h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Delta logo]()
$216
This United Airlines deal was found by Cheapflights users on 10/18. 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.
Fri 12/44:04 pm -
2 stops9h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/18![United Airlines logo]()
$221
This Kiwi.com deal was found by Cheapflights users on 10/21. 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.
Mon 11/27:59 pm -
2 stops20h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$235
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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.
Sat 12/53:32 pm -
2 stops21h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Alaska Airlines logo]()
$238
This Travelocity deal was found by Cheapflights users on 10/21. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/33:32 pm -
2 stops7h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Alaska Airlines logo]()
$242
This American Airlines deal was found by Cheapflights users on 10/21. 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.
Mon 11/21:23 pm -
1 stop8h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![American Airlines logo]()
$271
This United Airlines deal was found by Cheapflights users on 10/21. 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.
Sat 12/52:33 pm -
2 stops8h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![United Airlines logo]()
$276
Find 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 October 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $295 (Kiwi.com) |
One-way from | $178 (Kiwi.com) |
Popular in | November |
Cheapest in | January |
Average price | $529 |
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 7,457,451 searches. Data last updated October 23, 2026.
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
Cheapest round-trip
BillingsSan Diego
BIL Billings Logan Intl - SAN San Diego
BILSAN
Billings Logan Intl
Thu 12/3
4:04 pm-10:30 pm
1 stop7h 26m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$196
Quickest round-trip
BillingsSan Diego
BIL Billings Logan Intl - SAN San Diego
BILSAN
Billings Logan Intl
Sat 12/5
6:21 pm-10:45 pm
1 stop5h 24m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$216
BillingsSan Diego
BIL Billings Logan Intl - SAN San Diego
BILSAN
Billings Logan Intl
Sat 12/5
3:32 pm-10:33 pm
1 stop8h 01m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$216
BillingsSan Diego
BIL Billings Logan Intl - SAN San Diego
BILSAN
Billings Logan Intl
Mon 11/2
7:59 pm-3:58 pm
2 stops20h 59m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$235
BillingsSan Diego
BIL Billings Logan Intl - SAN San Diego
BILSAN
Billings Logan Intl
Thu 12/3
3:32 pm-9:50 pm
2 stops7h 18m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$242
BillingsSan Diego
BIL Billings Logan Intl - SAN San Diego
BILSAN
Billings Logan Intl
Fri 12/4
6:44 pm-8:02 am
3 stops38h 18m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$274
BillingsSan Diego
BIL Billings Logan Intl - SAN San Diego
BILSAN
Billings Logan Intl
Sat 12/5
2:33 pm-10:27 pm
2 stops8h 54m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$276
BillingsSan Diego
BIL Billings Logan Intl - SAN San Diego
BILSAN
Billings Logan Intl
Thu 1/28
7:00 am-12:56 pm
1 stop6h 56m
San Diego
Sun 1/31
5:18 pm-1:54 pm
2 stops19h 36m
$394
BillingsSan Diego
BIL Billings Logan Intl - SAN San Diego
BILSAN
Billings Logan Intl
Thu 1/28
2:38 pm-10:41 pm
2 stops9h 03m
San Diego
Mon 2/1
6:45 am-1:30 pm
1 stop5h 45m
$396
BillingsSan Diego
BIL Billings Logan Intl - SAN San Diego
BILSAN
Billings Logan Intl
Sat 1/30
7:00 am-12:56 pm
1 stop6h 56m
San Diego
Wed 2/3
3:49 pm-11:51 pm
1 stop7h 02m
$407
Showing 1-10 of 14 resultsSorted by cheapest first
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 October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
BIL-SAN
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
What is the cheapest month to book a flight from Billings to San Diego?
Currently, January is the cheapest month in which you can book a flight from Billings to San Diego (average of $310). Flying from Billings to San Diego in November is currently the most expensive (average of $598). 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.
How much does it cost to fly round-trip from Billings to San Diego?
Airfare is below average for this route at the moment.
Billings to San Diego flights typically cost between $435 and $628 in November.The cheapest round-trip price found within the last 5 days was $284 on Multiple Airlines (Nov 25-Dec 1).
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 October 23, 2026.
See what other customers who have flown with Alaska Airlines,Delta, andUnited 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.
Food
7.0
Entertainment
7.0
Comfort
7.8
Overall
7.9
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Food
7.0
Entertainment
7.0
Comfort
7.8
Overall
7.9
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Food
7.0
Entertainment
7.0
Comfort
7.8
Overall
7.9
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Food
7.0
Entertainment
7.0
Comfort
7.8
Overall
7.9
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
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.
Traveling to a place near San Diego?
Book flights to San Diego if you plan to visit one of these locationsEl Cajon
National City
Chula Vista
San Ysidro
Poway
Coronado
La Mesa
Julian
Santee
Lemon Grove
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Billings and San Diego flights
Browse other Billings and San Diego flight options. Last updated on October 23, 2026.
Other flights from Billings
Browse through other flights departing from Billings. Flights are based on user searches made on Cheapflights and were last updated on October 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to San Diego
Explore flights to San Diego departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 23, 2026.
Top 3 airlines flying from Billings to San Diego
Discover the top 3 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 7,457,451 searches. Data last updated October 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$236 | Average$313 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$293 | Average$458 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$294 | Average$457 | FlexibilityNo cancel fee | On-timeN/A |