$258+ 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 7/11. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — HLN
Jul 13 — Jul 201
Round-trip
1 adult, Economy
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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
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Best
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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 June 13, 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 June 13, 2026.
This Expedia deal was found by Cheapflights users on 6/10. 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.
Tue 9/156:27 pm
SAN
- HLN
2 stops21h 14m
Alaska Airlines
Sat 9/195:18 pm
HLN
- SAN
1 stop7h 26m
Alaska Airlines
Deal found 6/10![Alaska Airlines logo]()
$421
This Delta deal was found by Cheapflights users on 6/8. 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.
Tue 9/811:05 am
SAN
- HLN
2 stops24h 18m
Delta
Sat 9/1212:50 pm
HLN
- SAN
2 stops10h 58m
Delta
Deal found 6/8![Delta logo]()
$433
This Alaska Airlines deal was found by Cheapflights users on 6/8. 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 9/87:15 am
SAN
- HLN
1 stop8h 26m
Alaska Airlines
Sat 9/125:18 pm
HLN
- SAN
1 stop7h 28m
Alaska Airlines
Deal found 6/8![Alaska Airlines logo]()
$442
This flugladen.de deal was found by Cheapflights users on 6/11. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/610:09 am
SAN
- HLN
1 stop5h 23m
Alaska Airlines
Wed 8/125:09 pm
HLN
- SAN
2 stops15h 15m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$471
This Alaska Airlines deal was found by Cheapflights users on 6/9. 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.
Mon 8/1710:09 am
SAN
- HLN
1 stop5h 23m
Alaska Airlines
Fri 8/215:32 pm
HLN
- SAN
1 stop18h 07m
Alaska Airlines
Deal found 6/9![Alaska Airlines logo]()
$474
This Delta deal was found by Cheapflights users on 6/8. 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 9/95:00 pm
SAN
- HLN
1 stop4h 34m
Delta
Sat 9/1212:50 pm
HLN
- SAN
2 stops10h 58m
Delta
Deal found 6/8![Delta logo]()
$476
This Orbitz deal was found by Cheapflights users on 6/8. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/86:15 am
SAN
- HLN
1 stop9h 26m
Alaska Airlines
Fri 9/115:18 pm
HLN
- SAN
1 stop7h 28m
Alaska Airlines
Deal found 6/8![Alaska Airlines logo]()
$481
This Alaska Airlines deal was found by Cheapflights users on 6/9. 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 10/109:08 am
SAN
- HLN
1 stop6h 03m
Alaska Airlines
Wed 10/144:48 pm
HLN
- SAN
1 stop8h 11m
Alaska Airlines
Deal found 6/9![Alaska Airlines logo]()
$493
This Delta deal was found by Cheapflights users on 6/11. 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 8/66:29 am
SAN
- HLN
1 stop4h 46m
Delta
Wed 8/1212:55 pm
HLN
- SAN
1 stop4h 01m
Delta
Deal found 6/11![Delta logo]()
$495
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 June 13, 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 June 13, 2026.
This Alaska Airlines deal was found by Cheapflights users on 6/8. 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.
Wed 9/99:31 am
SAN
- HLN
1 stop6h 10m
Alaska Airlines
Sat 9/125:18 pm
HLN
- SAN
1 stop7h 28m
Alaska Airlines
Deal found 6/8![Alaska Airlines logo]()
$442
This Delta deal was found by Cheapflights users on 6/11. 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 8/66:29 am
SAN
- HLN
1 stop4h 46m
Delta
Wed 8/1212:55 pm
HLN
- SAN
1 stop4h 01m
Delta
Deal found 6/11![Delta logo]()
$495
This Orbitz deal was found by Cheapflights users on 6/8. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/86:15 am
SAN
- HLN
1 stop9h 26m
Alaska Airlines
Fri 9/115:18 pm
HLN
- SAN
1 stop7h 28m
Alaska Airlines
Deal found 6/8![Alaska Airlines logo]()
$481
This Alaska Airlines deal was found by Cheapflights users on 6/8. 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.
Wed 9/99:31 am
SAN
- HLN
1 stop6h 10m
Alaska Airlines
Fri 9/115:18 pm
HLN
- SAN
1 stop7h 28m
Alaska Airlines
Deal found 6/8![Alaska Airlines logo]()
$481
This Alaska Airlines deal was found by Cheapflights users on 6/9. 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.
Mon 8/177:18 am
SAN
- HLN
1 stop8h 14m
Alaska Airlines
Fri 8/215:32 pm
HLN
- SAN
2 stops25h 15m
Alaska Airlines
Deal found 6/9![Alaska Airlines logo]()
$484
This Trip.com deal was found by Cheapflights users on 6/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/67:48 am
SAN
- HLN
2 stops7h 44m
Alaska Airlines
Wed 8/125:09 pm
HLN
- SAN
2 stops25h 38m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$504
This Alaska Airlines deal was found by Cheapflights users on 6/9. 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 stop7h 47m
Alaska Airlines
Deal found 6/9![Alaska Airlines logo]()
$510
Last-minute flights from San Diego to HelenaDiscover last-minute flight deals from San Diego to Helena. Data last updated June 13, 2026 and is based on user searches.
Discover last-minute flight deals from San Diego to Helena. Data last updated June 13, 2026 and is based on user searches.
This Alaska Airlines deal was found by Cheapflights users on 6/9. 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 stop7h 47m
Alaska Airlines
Deal found 6/9![Alaska Airlines logo]()
$510
This Delta deal was found by Cheapflights users on 6/11. 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 7/95:01 pm
SAN
- HLN
1 stop4h 38m
Delta
Tue 7/1412:55 pm
HLN
- SAN
1 stop6h 11m
Delta
Deal found 6/11![Delta logo]()
$525
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 June 13, 2026.
Search for one-way flight options from San Diego to Helena. Find affordable one-way fares based on user searches. Data last updated June 13, 2026.
This Delta deal was found by Cheapflights users on 6/9. 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 6/9![Delta logo]()
$258
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 June 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $421 (Expedia) |
One-way from | $258 (Delta) |
Popular in | June |
Cheapest in | August |
Average price | $655 |
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 June 13, 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 9/9
9:31 am-4:41 pm
1 stop6h 10m
Helena
Sat 9/12
5:18 pm-11:46 pm
1 stop7h 28m
$442
San DiegoHelena
SAN - HLN
SANHLN
San Diego
Tue 9/8
6:15 am-4:41 pm
1 stop9h 26m
Helena
Fri 9/11
5:18 pm-11:46 pm
1 stop7h 28m
$481
San DiegoHelena
SAN - HLN
SANHLN
San Diego
Wed 9/9
9:31 am-4:41 pm
1 stop6h 10m
Helena
Fri 9/11
5:18 pm-11:46 pm
1 stop7h 28m
$481
San DiegoHelena
SAN - HLN
SANHLN
San Diego
Mon 8/17
7:18 am-4:32 pm
1 stop8h 14m
Helena
Fri 8/21
5:32 pm-5:47 pm
2 stops25h 15m
$484
Quickest round-trip
San DiegoHelena
SAN - HLN
SANHLN
San Diego
Thu 8/6
6:29 am-12:15 pm
1 stop4h 46m
Helena
Wed 8/12
12:55 pm-3:56 pm
1 stop4h 01m
$495
San DiegoHelena
SAN - HLN
SANHLN
San Diego
Thu 8/6
7:48 am-4:32 pm
2 stops7h 44m
Helena
Wed 8/12
5:09 pm-5:47 pm
2 stops25h 38m
$504
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-11:56 pm
1 stop7h 47m
$510
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
$258
Sorted 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 June.
| 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 June 13, 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.
Entertainment
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Overall
7.9
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentMichael,Sep 2023
SMF - ATL
Entertainment
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Overall
7.9
Comfort
7.8
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.
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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 June 13, 2026.
San Diego and Helena flights
Browse other San Diego and Helena flight options. Last updated on June 13, 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 June 13, 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 June 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$278 | Average$482 | FlexibilityNo cancel fee | On-timeN/A |