SAN - BIL

$149 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 8/24. 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

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
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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

Sat, Sep 6 - Sat, Sep 13
Hawaiian Airlines Logo
7:00 am - 1:24 pmSAN-BIL
5h 24m1 stop
Hawaiian Airlines Logo
6:00 am - 12:56 pmBIL-SAN
7h 56m1 stop
$264Hawaiian Airlines
Find Deal
Sat, Sep 6 - Sat, Sep 13
Alaska Airlines Logo
7:00 am - 1:24 pmSAN-BIL
5h 24m1 stop
Alaska Airlines Logo
6:00 am - 5:47 pmBIL-SAN
12h 47m2 stops
$269Alaska Airlines
Find Deal
Tue, Aug 26 - Sat, Aug 30
Alaska Airlines Logo
8:33 am - 6:38 pmSAN-BIL
9h 05m2 stops
Alaska Airlines Logo
3:43 pm - 8:18 pmBIL-SAN
5h 35m1 stop
$285Alaska Airlines
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Tue, Jul 29 - Tue, Aug 5
Delta Logo
5:00 pm - 12:07 amSAN-BIL
6h 07m1 stop
Delta Logo
6:20 am - 12:51 pmBIL-SAN
7h 31m1 stop
$291Delta
Find Deal
Tue, Aug 26 - Sat, Aug 30
Alaska Airlines Logo
11:46 am - 6:38 pmSAN-BIL
5h 52m1 stop
Alaska Airlines Logo
3:43 pm - 8:18 pmBIL-SAN
5h 35m1 stop
$293Alaska Airlines
Find Deal
Tue, Aug 26 - Sat, Aug 30
Alaska Airlines Logo
8:59 pm - 3:03 pmSAN-BIL
17h 04m2 stops
Alaska Airlines Logo
3:43 pm - 8:29 amBIL-SAN
17h 46m2 stops
$295Alaska Airlines
Find Deal
Tue, Jul 29 - Mon, Aug 4
Delta Logo
4:00 pm - 12:07 amSAN-BIL
7h 07m2 stops
Delta Logo
5:20 am - 8:39 amBIL-SAN
4h 19m1 stop
$296Delta
Find Deal
Tue, Jul 29 - Tue, Aug 5
Delta Logo
4:00 pm - 12:07 amSAN-BIL
7h 07m2 stops
Delta Logo
5:20 am - 12:50 pmBIL-SAN
8h 30m2 stops
$301Delta
Find Deal
Sat, Jul 26 - Tue, Aug 5
United Airlines Logo
10:49 am - 9:03 pmSAN-BIL
9h 14m2 stops
United Airlines Logo
5:00 am - 3:06 pmBIL-SAN
11h 06m2 stops
$384United Airlines
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Sat, Jul 26 - Fri, Aug 8
United Airlines Logo
10:49 am - 9:03 pmSAN-BIL
9h 14m2 stops
United Airlines Logo
5:00 am - 9:09 amBIL-SAN
5h 09m1 stop
$404United Airlines
Find Deal
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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’s the cheapest day of the week to fly from San Diego to Billings?

The average price of all round-trip flights from San Diego to Billings clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from San Diego to Billings, look for departures on Tuesdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Billings, Friday is the cheapest day to fly and Monday is the most expensive.

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 February and January, where the average cost of round-trip tickets is $784 and $575 respectively.

Good to know

Low seasonFebruary
High seasonApril
Cheapest flight$149
Best time to beat the crowds but there is an average 88% increase in price.
Most popular time to fly and prices are also 32% 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 3 days, the lowest price for a flight from San Diego to Billings was $149 for a one-way ticket and $264 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?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between San Diego and Billings, with SkyTeam 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 $331 and an overall rating of 8.0, Delta is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $344 and an overall rating of 8.0.

  • 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.
8.0
Alaska AirlinesOverall score based on 10000 reviews
7.8Comfort
7.1Food
8.5Crew
8.1Boarding
7.1Entertainment
Airline reviews

I like the new adjustable headrest. Unfortunately 2 crying children were in front of us. But it was the first time and not holding Alaska accountable for that. Alaska always seems to have everything in order professional but comfortable.

8.0 ExcellentAnonymous, Jun 2025SAN - PDX
Read more Alaska Airlines reviews

I like the new adjustable headrest. Unfortunately 2 crying children were in front of us. But it was the first time and not holding Alaska accountable for that. Alaska always seems to have everything in order professional but comfortable.

Very bad, terrible food and late by 2 hours. Then no to open aircraft doors

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 plane was delayed a bit. It wasn't a huge problem though, as we were heading back home.

Flight was great. Boarding was crazy because another flight was boarding late next to ours so everyone was standing and in the way.

very good but no blankets for overnight flight or tv screens…

We were in 1st Class. Excellent service. Easy boarding. No too difficult to speak with someone on the phone. Breakfast was not eatable for me. No screen to watch movies. I don't have or want a tablet. This is first class there should be screens. Even if I had a tablet there was no place to put it. There is a place to put a tablet in economy. Seats were a bit lumpy.

A cheerful and effective crew. Tasty pre-order food options.

My youngest didn't have a assigned seat until we biard6the plane.

There was no seating at the gate, no where to charge your devices, super crowded. Boarding in group F meant all luggage space was taken when it was time for me to board. The boarding crew was short with everyone and seemed irritated. The luggage space was insufficient, the seat was too small for me (6'4") and very uncomfortable trip. I was in a middle seat between a person snoring the whole trip and a person with very strong body odor. The flight crew was terse and unfriendly, seemed irritated and impatient. Yelled a lot at people with earbuds in, understandable. Finally, we arrived 10 minutes early, only to sit on the tarmac for 20 minutes and wait for a gate. Worst flight experience I've had in years.

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

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

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

There are 4 flights in consecutive gates with about the same departure time. Two flights were boarding at the same time. One was delayed or boarding would be happening at the same time. I am not sure what Delta and LAX need to do to have a better layout at the end of Terminal 2

There was a security issue at the airport and we were unable to land. We circled endlessly and then landed at another airfield for fuel. We then circled the airport again, almost landed but didn’t fully touch down before circling again. I am thankful to the crew for keeping us safe- the issue was the airline and staff at the airport getting us seats on our connecting flights. That part was hours of searching for someone and getting in double my steps.

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.

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

737-800 in first class was pretty dumpy. Seat had an uncomfortable angle, storage under the seat was blocked so even my very modest backpack didn't fit, power outlet was flaky. Weird tiny seat pockets that couldn't hold a gallon ziploc bag, emesis bag missing, etc. etc. No in-flight service due to turbulence. Crew was excellent, boarding was smooth despite a full flight.

Delta flight was on time, seats were comfortable, and crew was nice.

Boarded plane and then delayed 1.5 hours while on the plane

Horrific. They missed my connecting flight to San Diego. I didn’t get there until Monday at 9am when I had a mandatory court settlement conference scheduled at 6am since we had parties on the east coast. This caused many issues. All because United apparently forgot to hold the doors open until my flight landed that only had a 10 minute delay. This was the last flight to Southern California. So I couldn’t even rent a car to finish the trip. United cannot be trusted when traveling on specific days and times since weather didn’t have anything to do with the delays.

Really good 😊 the woman at the gate entrance was a little rude checking in our carry-on but i dont think she worked for the airline, she worked for the airport at sacramento, other than that amazing.

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Boarding seemed to be organized bedlam. For what ever reason, preboarding took longer than 20 minutes. Made the plane 20 minutes late taking off. Luckily we arrived on time. Flight crew seemed very friendly. Only slight turbulence.

The personnel were professional and friendly. The Boeing 737 Max 9 is too claustrophobic and was very warm at both airport gates, and still warm in the air.

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

get E+, a must for 5 hours flight if you are tall

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