$210+ Cheap flights from San Diego to Helena (SAN - HLN)
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 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — HLN
Jun 1 — Jun 81
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from San Diego to Helena 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 San Diego to Helena
Cheapest
Best
Last-minute
One-way
Cheapest flights from San Diego to HelenaExplore the most affordable flight options available from San Diego to Helena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 2, 2026.
Explore the most affordable flight options available from San Diego to Helena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 2, 2026.
This Expedia deal was found by Cheapflights users on 4/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/287:15 am
SAN
- HLN
1 stop7h 51m
Alaska Airlines
Mon 6/14:43 pm
HLN
- SAN
1 stop18h 39m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$377
This Delta deal was found by Cheapflights users on 4/27. 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.
Wed 5/206:15 am
SAN
- HLN
1 stop5h 08m
Delta
Sun 5/245:45 am
HLN
- SAN
1 stop4h 00m
Delta
Deal found 4/27![Delta logo]()
$388
This Delta deal was found by Cheapflights users on 4/27. 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.
Thu 5/286:15 am
SAN
- HLN
1 stop5h 08m
Delta
Sun 5/315:45 am
HLN
- SAN
1 stop4h 00m
Delta
Deal found 4/27![Delta logo]()
$419
This Delta deal was found by Cheapflights users on 4/30. 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.
Fri 5/295:01 pm
SAN
- HLN
1 stop4h 32m
Delta
Sun 5/315:45 am
HLN
- SAN
1 stop4h 00m
Delta
Deal found 4/30![Delta logo]()
$434
This Delta deal was found by Cheapflights users on 5/1. 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.
Fri 6/126:15 am
SAN
- HLN
1 stop5h 05m
Delta
Mon 6/155:35 am
HLN
- SAN
1 stop4h 07m
Delta
Deal found 5/1![Delta logo]()
$449
This Expedia deal was found by Cheapflights users on 4/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:15 am
SAN
- HLN
1 stop8h 51m
Alaska Airlines
Sun 5/314:43 pm
HLN
- SAN
2 stops16h 38m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$456
This Alaska Airlines deal was found by Cheapflights users on 4/29. 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 7/38:01 pm
SAN
- HLN
2 stops19h 31m
Alaska Airlines
Wed 7/85:09 pm
HLN
- SAN
1 stop5h 58m
Alaska Airlines
Deal found 4/29![Alaska Airlines logo]()
$467
This Expedia deal was found by Cheapflights users on 4/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/296:53 pm
SAN
- HLN
2 stops20h 13m
Alaska Airlines
Sun 5/314:43 pm
HLN
- SAN
1 stop8h 16m
Alaska Airlines
Deal found 4/30![Alaska Airlines logo]()
$481
This Alaska Airlines deal was found by Cheapflights users on 5/1. 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 6/128:15 pm
SAN
- HLN
2 stops19h 17m
Alaska Airlines
Mon 6/155:09 pm
HLN
- SAN
1 stop6h 54m
Alaska Airlines
Deal found 5/1![Alaska Airlines logo]()
$487
Best flights from San Diego to HelenaDiscover carefully curated flight deals from San Diego to Helena that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 2, 2026.
Discover carefully curated flight deals from San Diego to Helena that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 2, 2026.
This Delta deal was found by Cheapflights users on 4/27. 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.
Wed 5/206:15 am
SAN
- HLN
1 stop5h 08m
Delta
Sun 5/245:45 am
HLN
- SAN
1 stop4h 00m
Delta
Deal found 4/27![Delta logo]()
$388
This Expedia deal was found by Cheapflights users on 4/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:15 am
SAN
- HLN
1 stop8h 51m
Alaska Airlines
Mon 6/14:43 pm
HLN
- SAN
2 stops15h 32m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$417
This Delta deal was found by Cheapflights users on 4/27. 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.
Thu 5/286:15 am
SAN
- HLN
1 stop5h 08m
Delta
Sun 5/315:45 am
HLN
- SAN
1 stop4h 00m
Delta
Deal found 4/27![Delta logo]()
$419
This Alaska Airlines deal was found by Cheapflights users on 4/29. 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 7/38:01 pm
SAN
- HLN
2 stops19h 31m
Alaska Airlines
Wed 7/85:09 pm
HLN
- SAN
1 stop5h 58m
Alaska Airlines
Deal found 4/29![Alaska Airlines logo]()
$467
This Delta deal was found by Cheapflights users on 4/30. 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.
Fri 5/295:01 pm
SAN
- HLN
1 stop4h 32m
Delta
Sun 5/315:45 am
HLN
- SAN
1 stop4h 00m
Delta
Deal found 4/30![Delta logo]()
$434
This Alaska Airlines deal was found by Cheapflights users on 5/1. 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 6/128:15 pm
SAN
- HLN
2 stops19h 17m
Alaska Airlines
Mon 6/155:09 pm
HLN
- SAN
1 stop6h 54m
Alaska Airlines
Deal found 5/1![Alaska Airlines logo]()
$487
This Delta deal was found by Cheapflights users on 5/1. 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.
Fri 6/126:15 am
SAN
- HLN
1 stop5h 05m
Delta
Mon 6/155:35 am
HLN
- SAN
1 stop4h 07m
Delta
Deal found 5/1![Delta logo]()
$449
Last-minute flights from San Diego to HelenaDiscover last-minute flight deals from San Diego to Helena. Data last updated May 2, 2026 and is based on user searches.
Discover last-minute flight deals from San Diego to Helena. Data last updated May 2, 2026 and is based on user searches.
This Alaska Airlines deal was found by Cheapflights users on 4/27. 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.
Tue 5/1212:30 pm
SAN
- HLN
2 stops26h 36m
Alaska Airlines
Sat 5/164:43 pm
HLN
- SAN
2 stops16h 33m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$525
This Delta deal was found by Cheapflights users on 4/27. 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.
Wed 5/206:15 am
SAN
- HLN
1 stop5h 08m
Delta
Sun 5/245:45 am
HLN
- SAN
1 stop4h 00m
Delta
Deal found 4/27![Delta logo]()
$388
This Expedia deal was found by Cheapflights users on 4/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/287:15 am
SAN
- HLN
1 stop7h 51m
Alaska Airlines
Mon 6/14:43 pm
HLN
- SAN
1 stop18h 39m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$377
This Delta deal was found by Cheapflights users on 4/27. 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.
Thu 5/286:15 am
SAN
- HLN
1 stop5h 08m
Delta
Sun 5/315:45 am
HLN
- SAN
1 stop4h 00m
Delta
Deal found 4/27![Delta logo]()
$419
This Expedia deal was found by Cheapflights users on 4/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:15 am
SAN
- HLN
1 stop8h 51m
Alaska Airlines
Sun 5/314:43 pm
HLN
- SAN
2 stops16h 38m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$456
This Delta deal was found by Cheapflights users on 4/30. 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.
Fri 5/295:01 pm
SAN
- HLN
1 stop4h 32m
Delta
Sun 5/315:45 am
HLN
- SAN
1 stop4h 00m
Delta
Deal found 4/30![Delta logo]()
$434
This Expedia deal was found by Cheapflights users on 4/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/296:53 pm
SAN
- HLN
2 stops20h 13m
Alaska Airlines
Sun 5/314:43 pm
HLN
- SAN
1 stop8h 16m
Alaska Airlines
Deal found 4/30![Alaska Airlines logo]()
$481
This Delta deal was found by Cheapflights users on 5/1. 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.
Fri 6/126:15 am
SAN
- HLN
1 stop5h 05m
Delta
Mon 6/155:35 am
HLN
- SAN
1 stop4h 07m
Delta
Deal found 5/1![Delta logo]()
$449
This Alaska Airlines deal was found by Cheapflights users on 5/1. 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 6/128:15 pm
SAN
- HLN
2 stops19h 17m
Alaska Airlines
Mon 6/155:09 pm
HLN
- SAN
1 stop6h 54m
Alaska Airlines
Deal found 5/1![Alaska Airlines logo]()
$487
One-way flights from San Diego to HelenaSearch for one-way flight options from San Diego to Helena. Find affordable one-way fares based on user searches. Data last updated May 2, 2026.
Search for one-way flight options from San Diego to Helena. Find affordable one-way fares based on user searches. Data last updated May 2, 2026.
This Delta deal was found by Cheapflights users on 5/1. 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.
Fri 6/55:01 pm
SAN
- HLN
1 stop4h 32m
Delta
Deal found 5/1![Delta logo]()
$210
This Delta deal was found by Cheapflights users on 4/28. 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 7/116:15 am
SAN
- HLN
1 stop5h 00m
Delta
Deal found 4/28![Delta logo]()
$225
This Alaska Airlines deal was found by Cheapflights users on 5/1. 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 9/259:20 pm
SAN
- HLN
2 stops18h 21m
Alaska Airlines
Deal found 5/1![Alaska Airlines logo]()
$259
This Alaska Airlines deal was found by Cheapflights users on 5/1. 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 6/55:44 pm
SAN
- HLN
2 stops21h 22m
Alaska Airlines
Deal found 5/1![Alaska Airlines logo]()
$264
This deal was found by Cheapflights users on 4/28. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/116:30 am
SAN
- HLN
1 stop6h 03m
United Airlines
Deal found 4/28![United Airlines logo]()
$265
This Alaska Airlines deal was found by Cheapflights users on 5/1. 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 9/267:44 am
SAN
- HLN
2 stops7h 57m
Alaska Airlines
Deal found 5/1![Alaska Airlines logo]()
$268
This Alaska Airlines deal was found by Cheapflights users on 4/29. 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 7/115:58 pm
SAN
- HLN
2 stops21h 34m
Alaska Airlines
Deal found 4/29![Alaska Airlines logo]()
$309
This United Airlines deal was found by Cheapflights users on 4/27. 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 5/1512:40 pm
SAN
- HLN
1 stop8h 06m
United Airlines
Deal found 4/27![United Airlines logo]()
$317
This Delta deal was found by Cheapflights users on 4/30. 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.
Thu 5/75:01 pm
SAN
- HLN
1 stop4h 32m
Delta
Deal found 4/30![Delta logo]()
$470
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 5/153:30 pm
SAN
- HLN
3 stops23h 36m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$623
Find flight deals from San Diego to Helena
Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to Helena (HLN). 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 May 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $377 (Expedia) |
One-way from | $210 (Delta) |
Popular in | June |
Cheapest in | July |
Average price | $320 |
Cheapflights Fare Finder
Customize your flight search to find flights from San Diego to Helena 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 May 2, 2026.
Use the filters below to find and compare flights from San Diego to Helena that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San DiegoHelena
SAN - HLN
SANHLN
San Diego
Wed 5/20
6:15 am-12:23 pm
1 stop5h 08m
Helena
Sun 5/24
5:45 am-8:45 am
1 stop4h 00m
$388
San DiegoHelena
SAN - HLN
SANHLN
San Diego
Thu 5/28
6:15 am-4:06 pm
1 stop8h 51m
Helena
Mon 6/1
4:43 pm-7:15 am
2 stops15h 32m
$417
San DiegoHelena
SAN - HLN
SANHLN
San Diego
Thu 5/28
6:15 am-12:23 pm
1 stop5h 08m
Helena
Sun 5/31
5:45 am-8:45 am
1 stop4h 00m
$419
Quickest round-trip
San DiegoHelena
SAN - HLN
SANHLN
San Diego
Fri 5/29
5:01 pm-10:33 pm
1 stop4h 32m
Helena
Sun 5/31
5:45 am-8:45 am
1 stop4h 00m
$434
San DiegoHelena
SAN - HLN
SANHLN
San Diego
Fri 6/12
6:15 am-12:20 pm
1 stop5h 05m
Helena
Mon 6/15
5:35 am-8:42 am
1 stop4h 07m
$449
San DiegoHelena
SAN - HLN
SANHLN
San Diego
Fri 7/3
8:01 pm-4:32 pm
2 stops19h 31m
Helena
Wed 7/8
5:09 pm-10:07 pm
1 stop5h 58m
$467
San DiegoHelena
SAN - HLN
SANHLN
San Diego
Fri 6/12
8:15 pm-4:32 pm
2 stops19h 17m
Helena
Mon 6/15
5:09 pm-11:03 pm
1 stop6h 54m
$487
Cheapest one-way
Quickest one-way
San DiegoHelena
SAN - HLN
SANHLN
San Diego
Sat 7/11
6:15 am-12:15 pm
1 stop5h 00m
$225
San DiegoHelena
SAN - HLN
SANHLN
San Diego
Fri 9/25
9:20 pm-4:41 pm
2 stops18h 21m
$259
San DiegoHelena
SAN - HLN
SANHLN
San Diego
Sat 7/11
6:30 am-1:33 pm
1 stop6h 03m
$265
Showing 1-10 of 13 resultsSorted by cheapest first
Compare providers for flights from San Diego to Helena
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 San Diego to Helena in May.
| 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 San Diego-Helena flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Diego-Helena flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Diego-Helena flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Diego-Helena 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 San Diego-Helena 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 San Diego to Helena
Have a flexible travel schedule? Discover the best time to fly to Helena from San Diego with our price prediction graph.
SAN-HLN
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 San Diego to Helena
Reviews of airlines servicing Helena
Get insights into the airlines that provide service to Helena. 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 Helena. Reviews last updated May 2, 2026.
See what other customers who have flown with Delta from San Diego to Helena have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.2
Overall
7.9
Boarding
8.1
Comfort
7.9
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentMichael,Sep 2023
SMF - ATL
Food
7.2
Overall
7.9
Boarding
8.1
Comfort
7.9
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentMichael,Sep 2023
SMF - ATL
Related info for your journey
Find useful and relevant information for your journey from San Diego to Helena. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Helena flight routes
Other flight options
Other flights from San Diego
Popular flights
Alternative routes for San Diego to Helena
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Helena by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from San Diego to Helena by cabin class
Find flights from San Diego to Helena, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Helena
Explore flights to Helena departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on May 2, 2026.
San Diego and Helena flights
Browse other San Diego and Helena flight options. Last updated on May 2, 2026.
Other flights from San Diego
Browse through other flights departing from San Diego. Flights are based on user searches made on Cheapflights and were last updated on May 2, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top airline flying from San Diego to Helena
Discover the top airline that operate flights from San Diego to Helena. 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 May 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$219 | Average$397 | FlexibilityNo cancel fee | On-timeN/A |