Cheap flights from San Diego to Helena from $315
This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from San Diego to Helena departing on 5/2. 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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Cheap round-trip flights
Alaska Airlines flights from San Diego to Helena
Our best Alaska Airlines deals on San Diego to Helena flight tickets
Delta flights from San Diego to Helena
Our best Delta deals on San Diego to Helena flight tickets
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How to get the cheapest flight ticket from San Diego to Helena
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 day to depart on your flight to Helena?
The cheapest day to depart from San Diego to Helena is on a Saturday. Travelers who choose to depart for Helena on a Saturday will often find tickets for as low as $378. The most expensive day to fly to Helena is Wednesday, with ticket prices averaging around $578.
What is the cheapest time of day to depart on your flight to Helena?
According to our data, the cheapest time of day to fly to Helena is in the morning. momondo users have found flights departing from San Diego to Helena in the morning for as low as $442. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Helena is in the afternoon when prices are around $464.
When to book flights from San Diego to Helena
Cheap San Diego to Helena (SAN to HLN) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from San Diego to Helena
How far is San Diego to Helena by plane?
San Diego and Helena are 995.5 mi apart from one another. In terms of flight time, this usually takes a little over 4h 23m.
When did momondo last update prices for flights from San Diego Airport to Helena Airport?
Prices for flights from San Diego Airport to Helena Airport are updated daily.
How many operators does momondo search for flights from San Diego Airport to Helena Airport?
As of April 2025, there is 1 operator available to choose from for flights from San Diego Airport to Helena Airport.
How old do you have to be to fly from San Diego Airport to Helena 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 San Diego Airport to Helena Airport.
What documentation or ID do you need to fly to Helena Airport?
The required travel and health documents for your Helena 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 Helena 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 San Diego to Helena?
Based on momondo bookings for this flight route, the most popular airline on flight routes from San Diego to Helena is Delta (100% of total bookings).
Best airlines flying from San Diego to Helena
Compare and see reviews for airlines that fly from San Diego to Helena with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $242 | Free Cancellation | Rating 8.0 7,897 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from San Diego to Helena?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from San Diego to Helena. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from San Diego to Helena with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Helena from San Diego with this policy.
How can momondo help me find flights from San Diego to Helena?
Once you have performed a search for San Diego to Helena flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from San Diego to Helena right now. Can momondo alert me if prices change?
If you are not ready to book a flight from San Diego to Helena now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Helena and let you know when they change.