SAN - BIL

$157 Find Cheap Flights from San Diego to Billings - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Diego to Billings departing on 8/30. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$283
Typical prices: $340-$610
Alaska Airlines
Wed 9/9Sat 9/12
SAN - BIL • 1 stop
Cheapest one-way
$156
Typical prices: $314-$380
Multiple Airlines
Sun 8/30
SAN - BIL • 1 stop
Top airlines
Cheapest • from $283 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between San Diego and Billings. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $376 (round-trip)
Shortest trip • 4h 52m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 31% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Billings!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from San Diego to Billings (SAN-BIL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Diego to Billings that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Diego to Billings

Wed, Sep 9 - Sat, Sep 12
Alaska Airlines Logo
9:31 am - 6:49 pm
SAN
-
BIL
8h 18m
1 stop
Alaska Airlines Logo
6:14 am - 2:42 pm
BIL
-
SAN
9h 28m
1 stop
$283Alaska Airlines
Wed, Sep 9 - Sat, Sep 12
Alaska Airlines Logo
7:15 am - 6:49 pm
SAN
-
BIL
10h 34m
1 stop
Alaska Airlines Logo
6:14 am - 11:45 am
BIL
-
SAN
6h 31m
1 stop
$283Alaska Airlines
Tue, Oct 27 - Sat, Oct 31
Alaska Airlines Logo
12:10 pm - 6:52 pm
SAN
-
BIL
5h 42m
1 stop
Alaska Airlines Logo
7:41 am - 2:38 pm
BIL
-
SAN
7h 57m
1 stop
$283Alaska Airlines
Fri, Sep 4 - Sun, Sep 6
United Airlines Logo
12:33 pm - 9:00 pm
SAN
-
BIL
7h 27m
1 stop
United Airlines Logo
2:29 pm - 8:34 pm
BIL
-
SAN
7h 05m
1 stop
$375United Airlines
Sat, Sep 5 - Wed, Sep 9
United Airlines Logo
2:24 pm - 10:07 pm
SAN
-
BIL
6h 43m
2 stops
United Airlines Logo
5:57 pm - 10:28 pm
BIL
-
SAN
5h 31m
1 stop
$378United Airlines
Fri, Sep 4 - Sun, Sep 6
United Airlines Logo
12:33 pm - 9:00 pm
SAN
-
BIL
7h 27m
1 stop
United Airlines Logo
5:07 am - 11:35 am
BIL
-
SAN
7h 28m
2 stops
$380United Airlines
Sat, Aug 22 - Mon, Aug 24
Delta Logo
5:01 pm - 10:53 pm
SAN
-
BIL
4h 52m
1 stop
Delta Logo
5:20 am - 8:41 am
BIL
-
SAN
4h 21m
1 stop
$391Delta
Wed, Sep 9 - Sat, Sep 12
Delta Logo
7:00 am - 5:53 pm
SAN
-
BIL
9h 53m
2 stops
Delta Logo
5:20 am - 12:42 pm
BIL
-
SAN
8h 22m
2 stops
$484Delta
Sat, Aug 22 - Mon, Aug 24
Delta Logo
5:01 pm - 10:53 pm
SAN
-
BIL
4h 52m
1 stop
Delta Logo
5:20 am - 12:39 pm
BIL
-
SAN
8h 19m
2 stops
$517Delta
Sat, Aug 22 - Mon, Aug 24
American Airlines Logo
10:45 pm - 10:05 am
SAN
-
BIL
10h 20m
1 stop
American Airlines Logo
7:00 am - 1:07 pm
BIL
-
SAN
7h 07m
1 stop
$571American Airlines
Booking Insights

KAYAK's insights & trends for San Diego to Billings flights

Get data-powered insights and trends into flights from San Diego to Billings to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from San Diego to Billings?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Diego to Billings, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from San Diego to Billings is November, where tickets cost $304 (return) on average. On the other hand, the most expensive months are September and June, where the average cost of round-trip tickets is $558 and $543 respectively.

Good to know

Low season

April

Cheapest flight

$157
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly and prices are also 31% lower on average.
Flight from San Diego to Billings

When to book flights from San Diego to Billings

Are your dates flexible? Find out the best times to travel from San Diego to Billings based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from San Diego to Billings

  • What is the cheapest flight from San Diego to Billings?

    In the last 5 days, the lowest price for a flight from San Diego to Billings was $157 for a one-way ticket and $283 for a round-trip.

  • Do I need a passport to fly between San Diego and Billings?

    No

  • Which aircraft models fly most regularly from San Diego to Billings?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from San Diego to Billings?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between San Diego and Billings, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from San Diego to Billings, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from San Diego to Billings are Alaska Airlines and Delta. With an average price for the route of $348 and an overall rating of 7.9, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $414 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from San Diego to Billings?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Diego to Billings.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Diego to Billings?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Billings from San Diego is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Diego to Billings?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Billings with an airline and back to San Diego with another airline. Booking your flights between San Diego and BIL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Diego to Billings?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Billings from San Diego up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from San Diego to Billings

 
See real verified KAYAK customer reviews for airlines flying from San Diego to Billings. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Diego to Billings? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
Alaska AirlinesOverall score based on 12755 reviews
7.0Entertainment
8.5Crew
8.1Boarding
7.0Food
7.8Comfort
Airline reviews

The flight was very late departing the gate, for unknown reasons.

8.0 ExcellentPaul, Jul 2026
SAN - SFO
Read more Alaska Airlines reviews

The flight was very late departing the gate, for unknown reasons.

Now that Spirit is not around Alaska took over the title of cheap and worse airlines with high prices for garbage cheap planes. Seats recline the entire 2”. What’s the purpose? Just make the stationary. Crew is on steroids. Food is like McDonald’s happy meal. Only happy in the name rest is garbage

Loved being about to check my carry on for free then getting to board earlier ( Group c rather than F) Crew was very nice and accommodating. Enjoyed the beverage and pretzels - I'll fly Alaska again if given the opportunity

Only issue is that when you board last they make you check your carry on due to lack of space. Did not care for that.

delay was longer than the entire flight. I didn’t stop flying with delta for this.

The flight 2161 was cancelled after repeated delays; for some reason the crew and not the tower located in Billings, Montana made the call. A cancelled flight is not a big deal, it happens. It was very disappointing that upon cancelling the flight it was a free for all to get to the counter for rebooking. Priority seating and first class ticket holders should have been giving priority to get on the next available flight. Most would agree that the process of moving states away, w/a cat, is stressful. A cancelled flight, 90 minutes to rebook, no place to stay, medication that was to be refrigerated and trying to find a local pet friendly hotel significantly added to the stress. Had I been able to rebook (per priority boarding SOP) I could have called the place I had just checked out of as my room most likely was just as I'd left it, including with pet supplies (which also had to be repurchased). While waiting to rebook, many of us called Alaska Airlines 800 number hoping to get a new flight; the waiting time -- this is not a joke -- was eight (8) hours, which dropped to "just" two (2) hours about 45-minutes later. Due to the cancellation I had to spend $268.75 and I still have not been refunded for the change in ticket (first class to regular). Each time I've call, five times now, the wait time was absurd, or a message of call back is given. Hopefully visiting the airport and talking with an agent face to face will be the final chapter to this experience. Alaska has been my go to air travel for years, hopefully this trip was just a hiccup. A system that forces customer's to spend hours of their time (money) to get a just due refund is not a working system. I suggest Alaska Airlines hire more representatives to handle calls; time is more valuable than money, spending 90 minutes to rebook a flight, without the difference being automatic is absurd. There are things called computers, they do amazing things. Once the flight was cancelled, only three agents were working to rebook the PAX, This too was unacceptable. First class ticket holders pay for first-class service, this should include rebooking on flights that are cancelled. I recall a time when flights were cancelled the airline would offer a hotel should the next flight not be until the following day? I had no idea that was no longer SOP; many could return home, several of us could not. The agents were pleasant once the PAX had their turn to rebook, this was true down in baggage area as well. The flight out the next day was also what I'd come to find of Alaska Airlines.

Wheelchair assistance was provided in Seattle and was very gratefully accepted. Thank you to the Alaska staff.

Food and entertainment aren’t a thing on these regional flights. But it was a smooth flight. Could see gorgeous countryside through the large windows. The earplugs are a nice touch for the prop engines but the hum of the engines did not bother me. Grateful the option exists to easily get from A to B.

The cold air vent in our seat isle had a leak in the overhead panel (10 C&D). On the ground and part of the flight After take off and before landing in Billings. We had very cold air blow on us.

I think everything was just fine I wouldn't change nothing

Very good flight. Crew was great. No issues and we even arrived early.

Loved the crew! Sucks that we went from 1 hour and 8 minute layover to a 3 hour layover. But weather sucks like that.

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Delta flight was great from the check in all the way to arrival. However, I had a very bad experience. I requested a wheelchair and the wheelchair employee that went to pick me up from the plane in Boston to bring me to the baggage claims told me I have to pay him. I was under the impression that it was a free service and I usually give tips but the person forced me to pay and since I said no because I was upset with his demand when my daughter walked in to pick me up he demanded payment from my daughter who paid him thinking maybe now it is a charged service.

There was a loud squeaky sound the whole time we were flying.

The landing was bad and the hostess came two times and i was sleeping but when she served the person that nexts to me I woke up and she didn’t even asked me if I need any drink or snacks two times!!!!

Waited 3 hours on a plane to de-ice due to manpower issues. Waited another hour and a half once we landed because of a gate issue. Missed my connections. Created. A total of 13 hours of delay.

Like most domestic flights in the US, you are basically on your own with this airline when it comes to food, so be sure to purchase meals and drinks ahead of time or expect to arrive starving and dehydrated (like I was).

Service was professional and quick. Premium economy seat was comfortable given the class

The staff was extremely helpful and friendly at all times! They went above and beyond to get us into an earlier flight in San Diego to make our connection in SFO possible, because our original flight did actually not make it! I did so much appreciate the UA team and how they made this possible. We also didn’t have seats together on the long flight to Singapore, but they found us seats together last moment with no additional cost! Nobody sat next to us, so that we were able to sleep! Thanks to UA for improving their service and Underpricer for booking this trip! Please be careful: 1,5 hrs for transfer in San Francisco might not be enough time in the future

Over 2.5 hour maintenance delay on first morning flight with no acknowledgement, compensation or even gesture of good will. Aircraft had overnighted at airport so issue should have been addressed prior to boarding. Over 3.5 hours before first slow and deliberate beverage service.

Complimentary light meal would be appreciated. But great flight crew service on all legs

The food was terrible this time. Otherwise pleasant, quiet, on-time.

I was in first class. The outlets at my seat did not work. The plane was shabby and run down. I had prepurchsed a day subscription for internet that was not redeemable. I had to repurchase the internet for my flight and then it didn’t work anyway. Quite disappointed in what was supposed to be the launch of a great vacation.

As usual, United scheduling is completely misleading. A 54-minute layover at O’Hare is too short to make a lot of connections, especially since the flight landed “on time” but had to wait on the taxiway 15 minutes for a gate to open up. Then it takes another 10 minutes to exit the plane before one can run to another concourse to catch a connecting flight.

Flight was ok. Unfortunately it was a Boeing 737, which is a cramped / tight airplane. I prefer the Airbus as they are a more comfortable flight experience.

We were traveling as a family of 5 and they refused to seat us together. There were entire rows open, and my 13 year old daughter had to sit alone. Ridiculous!

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

Everything you need to know for your flight from San Diego to Billings

Information on your arrival and departure airports