SAN - BIL

$165 Find Cheap Flights from San Diego to Billings

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 5/4. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Billings

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Diego to Billings, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Diego to Billings, as well as popular online travel agencies
Travelers love KAYAK
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Everything you should know

Cheapest round-trip
$303
Overall average: $292
Multiple Airlines
Thu 8/6Mon 8/10
SAN - BIL • 1 stop
Cheapest one-way
$165
Typical prices: $300-$347
Delta
Mon 5/4
SAN - BIL • 1 stop
Top airlines
Cheapest • from $309 (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 $426 (round-trip)
Shortest trip • 4h 48m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 26% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
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

Thu, Aug 6 - Mon, Aug 10
Multiple Airlines Logo
9:53 pm - 9:10 am
SAN
-
BIL
10h 17m
1 stop
Multiple Airlines Logo
10:00 am - 8:58 pm
BIL
-
SAN
11h 58m
1 stop
$303Multiple Airlines
Sat, Jul 11 - Sat, Jul 25
Multiple Airlines Logo
4:17 pm - 5:06 pm
SAN
-
BIL
23h 49m
1 stop
Multiple Airlines Logo
3:40 pm - 3:32 pm
BIL
-
SAN
24h 52m
1 stop
$305Multiple Airlines
Tue, Apr 28 - Sat, May 2
Delta Logo
5:00 pm - 10:54 pm
SAN
-
BIL
4h 54m
1 stop
Delta Logo
5:20 am - 8:42 am
BIL
-
SAN
4h 22m
1 stop
$309Delta
Tue, Apr 28 - Sat, May 2
Delta Logo
11:40 am - 10:54 pm
SAN
-
BIL
10h 14m
2 stops
Delta Logo
5:20 am - 8:42 am
BIL
-
SAN
4h 22m
1 stop
$314Delta
Thu, Apr 23 - Wed, May 13
Delta Logo
5:00 pm - 10:24 pm
SAN
-
BIL
4h 24m
1 stop
Delta Logo
5:30 am - 8:45 am
BIL
-
SAN
4h 15m
1 stop
$319Delta
Thu, Apr 23 - Wed, May 13
Delta Logo
11:58 am - 8:06 pm
SAN
-
BIL
7h 08m
1 stop
Delta Logo
5:30 am - 2:57 pm
BIL
-
SAN
10h 27m
2 stops
$324Delta
Fri, Apr 17 - Fri, Apr 24
Delta Logo
11:58 am - 8:06 pm
SAN
-
BIL
7h 08m
1 stop
Delta Logo
6:18 pm - 11:42 pm
BIL
-
SAN
6h 24m
1 stop
$329Delta
Fri, Apr 17 - Mon, Apr 20
Delta Logo
11:58 am - 8:06 pm
SAN
-
BIL
7h 08m
1 stop
Delta Logo
5:20 am - 2:50 pm
BIL
-
SAN
10h 30m
2 stops
$334Delta
Mon, May 11 - Mon, May 18
Multiple Airlines Logo
10:07 pm - 1:51 pm
SAN
-
BIL
38h 44m
2 stops
Multiple Airlines Logo
3:41 pm - 3:31 pm
BIL
-
SAN
24h 50m
1 stop
$336Multiple Airlines
Sat, May 2 - Sat, May 9
Delta Logo
11:58 am - 8:06 pm
SAN
-
BIL
7h 08m
1 stop
Delta Logo
6:19 pm - 9:55 pm
BIL
-
SAN
4h 36m
1 stop
$337Delta
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 April, where tickets cost $284 (return) on average. On the other hand, the most expensive months are September and March, where the average cost of round-trip tickets is $558 and $502 respectively.

Good to know

Low seasonFebruary
Cheapest flight$165
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly with an average 11% increase in price.
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 3 days, the lowest price for a flight from San Diego to Billings was $165 for a one-way ticket and $274 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, Delta or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from San Diego to Billings are Delta and Alaska Airlines. With an average price for the route of $324 and an overall rating of 7.9, Delta is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $329 and an overall rating of 7.9.

  • 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 12093 reviews
8.1Boarding
7.0Food
7.8Comfort
8.5Crew
7.0Entertainment
Airline reviews

I had a problem with my reservation and no one could help me understand what happened. I booked my flight months ago and received a confirmation email. In the confirmation email, it said that the flight would depart at 3:15 p.m. A few hours before the flight, I tried to go online and check in, and suddenly it said that the flight was leaving an hour earlier. I had to rush to get to the airport and almost didn't make it. No one could help me understand why this happened, and I'm really concerned that it might happen in the future. I would appreciate some support in this matter.

6.0 GoodAnonymous, Mar 2026
SAN - EUG
Read more Alaska Airlines reviews

I had a problem with my reservation and no one could help me understand what happened. I booked my flight months ago and received a confirmation email. In the confirmation email, it said that the flight would depart at 3:15 p.m. A few hours before the flight, I tried to go online and check in, and suddenly it said that the flight was leaving an hour earlier. I had to rush to get to the airport and almost didn't make it. No one could help me understand why this happened, and I'm really concerned that it might happen in the future. I would appreciate some support in this matter.

It was a super old plane so the first class experience was just not luxurious

Good as usual. Just wished my seat was assigned at online check in. Thanks anyways

This was my first trip with Alaska Airlines (round trip DCA to San Diego). Despite a slight delay on the return flight, I feel compelled to post a RAVE review! I cannot praise the airline and the crew enough! Everyone was kind, professional, and courteous, every step of the way- excellent service, snacks, and entertainment! On both legs of the trip I inquired whether there were any free seating upgrades and my request were granted BOTH times! I’ve flown on other airlines where they won’t do that, even when those premium seats are empty. As a customer service professional myself, I can say I left my experience feeling like a valued customer and not just a number. I NEVER expected to praise an airline lol I’ll definitely go out of my way to fly with Alaska on future trips. Thank you for such an awesome experience!

I bought tickets MONTHS ago for a flight that left SAN at 14:30. That is what it says on our tickets. I was never notified of any time changes. During online check-in. I discovered the flight time had been changed to 15:45. This was unacceptable and had I been notified, I would have changed flights, or airlines. That departure time was unworkable with our plans. We called Alaska and asked for an explanation. They said flight time was changed 11/08/25. No proof of notification could be offered. We asked to be moved to an earlier flight. After much pleading, the rep said she would allow a “one time exception..” While I appreciate being moved, this was YOUR fault Alaska Airlines.

The room for legs is adequate for a 6’ tall man and the flight was comfortable. The cabin is clean and the crew is very friendly and pleasant.

Worst first/business class I have ever flown after 75 years on planes. Barely acceptable seats, terrible food, uninterested attendants, unavailable WiFi. I’ll never fly this airline again.

Again, very smooth and all of the Alaska folks were great. They continue to meet all my needs.

The whole experience went smoothly with no hitches along the way.

My Alaska Airlines return flight, although worked out in the end, didn't start off well. The initial plane that my family and I boarded was grounded because of a mishap that happened to one of the engines and everyone on board had to disembark the plane. Thankfully we were accommodated with a another plane but our initial flight was supposed to have departed at 11 pm San Diego time for Orlando but instead we ended up leaving at 1:40 am San Diego time. All Passengers were informed that part of the delay was that the plane had to be inspected by the captain, the food had to be stocked and the individuals responsible for fueling the plane left for the evening and had to be summoned to return to fill up our. The Alaska Airlines crew at the airport and on the plane were awesome and apologetic. I know that the crew wasn't responsible for the mishap of the engine but I think in the future the airline should offer a complimentary drink or (1) item of food other than pretzels, nuts or chips to all passengers since we're not to blame for the extreme set backs. The airline in general is good and I recommend to all flyers.

My recent experience was excellent on Delta! I flew with Delta Comfort and I was really comfortable in my seat. I enjoyed the in-flight service. The flight attendants were so friendly and hospitable. I love the snack on the flight as well. This was my first time flying on Delta and I will definitely consider flying with them again.

My flight was canceled on Sunday. Rebooking took three hours. Had to pay for accommodations another night. New flight was delayed for 5 hours, all that was sent was a 12 dollar food voucher, which doesn’t tell you how to use it. Then when we landed we had to sit on the plane for an hour before we could get off.

I was in first class and literally the men behind me were so aggressively loud I moved myself to economy. This has become so common on Delta - people using audio without headphones, and men on 12am / late night flights drinking and yelling to talk to each other which prevents anyone around them from resting. Pretty crazy to have to move from first to economy (poorer service, less comfort...). Wild wild. Looking into other airlines.

Flight was delayed by 3-hours and their fix was… complimentary pretzels.

The crew, and fellow passengers, were super gracious and kind. There seemed to be plenty of bin space even though the plane was full. It’s nice to get a glass of wine with dinner in Premiere seating, and there was a lot of food.

Everything I mentioned earlier - the airbus was more comfortable indeed and the experience was further enhanced.

The plane was an older model, so it wasn’t as comfortable as others. The flight attendants were not helpful during onboarding. It was a full flight so there was chaos finding space for baggage.

Awesome! On time flight, early arrival, and a complimentary upgrade!

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

Delta’s staff is unmatched. From the gate agents, to the pilots, to the flight attendants… all top of the industry.

My flight was canceled a few hours before boarding. I was rebooked on Copa airlines and missed an important meeting .

OK, we were delayed and had to de plane and reboard.

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

Staff were good. My seat was in need of repair, but for a short flight was not problematic. Usual basic snack and drink setup that you'll find on any US carrier. Over, a decent, basic flight.

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

Flight delayed for more than 16 hrs and no effort was spent to provide an alternate

Women boarding passengers at the gate was absolutely rude and disrespectful of passengers. The flight attendant was absolutely delightful! Smiling and connected with the passengers. So happy. The seats are cramped and uncomfortable but I guess that’s just the way it is Communication regarding flight was excellent

it was a very short flight so my expectations were low.

Very disappointing given gate agent behavior. Filed a formal complaint with United.

Crew was great (professional, attentive, prompt). Snacks for 4 hrs flight is deplorable.

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

Information on your arrival and departure airports