SAN - BIL

$122 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 6/2. 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

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
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Useful Info
Flights Deals

Cheap Flights from San Diego to Billings

 
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.

Recent round-trip flight deals from San Diego to Billings

KAYAK's recommended round-trip deals from the most popular airlines that fly from San Diego to Billings.
Discover the best prices for you by selecting your travel dates on KAYAK.
 Logo
6:58 pm - 9:36 pmSAN-BIL
25h 38m1 stop
 Logo
12:14 pm - 11:56 pmBIL-SAN
12h 42m1 stop
Thu, May 22 - Wed, May 28
 Logo
5:43 pm - 9:36 pmSAN-BIL
26h 53m1 stop
 Logo
12:14 pm - 4:45 pmBIL-SAN
29h 31m2 stops
Thu, May 22 - Wed, May 28
 Logo
6:15 am - 9:34 pmSAN-BIL
14h 19m1 stop
 Logo
10:24 pm - 11:29 pmBIL-SAN
26h 05m1 stop
Mon, Jun 16 - Fri, Jun 27
Delta Logo
9:47 am - 5:17 pmSAN-BIL
6h 30m1 stop
Delta Logo
5:59 pm - 11:53 pmBIL-SAN
6h 54m1 stop
$245Delta
Find Deal
Sat, May 24 - Tue, May 27
Delta Logo
1:55 pm - 10:49 pmSAN-BIL
7h 54m2 stops
Delta Logo
5:59 pm - 11:53 pmBIL-SAN
6h 54m1 stop
$250Delta
Find Deal
Sat, May 24 - Tue, May 27
Delta Logo
1:55 pm - 10:49 pmSAN-BIL
7h 54m2 stops
Delta Logo
5:20 am - 1:30 pmBIL-SAN
9h 10m2 stops
$255Delta
Find Deal
Sat, May 24 - Tue, May 27
 Logo
8:08 am - 9:36 pmSAN-BIL
36h 28m3 stops
 Logo
12:14 pm - 11:56 pmBIL-SAN
12h 42m1 stop
Thu, May 22 - Wed, May 28
Delta Logo
7:18 pm - 12:19 amSAN-BIL
4h 01m1 stop
Delta Logo
5:59 pm - 11:53 pmBIL-SAN
6h 54m1 stop
$265Delta
Find Deal
Fri, May 23 - Sun, Jun 1
Delta Logo
1:57 pm - 12:12 amSAN-BIL
9h 15m2 stops
Delta Logo
5:20 am - 8:41 amBIL-SAN
4h 21m1 stop
$276Delta
Find Deal
Mon, Jun 16 - Fri, Jun 27
Alaska Airlines Logo
9:07 pm - 3:05 pmSAN-BIL
16h 58m2 stops
Alaska Airlines Logo
6:05 am - 1:04 pmBIL-SAN
7h 59m2 stops
$362Alaska Airlines
Find Deal
Fri, May 23 - Sun, Jun 1
Useful Info

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.

How far in advance should I book a flight from San Diego to Billings?

To calculate weekly average prices, KAYAK takes all prices for each week before departure 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 average of all the values for each week.

To get a below average price on the flight from San Diego to Billings, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Low seasonFebruary
High seasonApril
Cheapest flight$122
Best time to beat the crowds but there is an average 82% increase in price.
Most popular time to fly and prices are also 34% 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 $122 for a one-way ticket and $175 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?

    SkyTeam, Star Alliance, 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 $369 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.

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 9972 reviews
8.5Crew
7.1Food
8.1Boarding
7.1Entertainment
7.9Comfort
Airline reviews

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

2.0 MediocreStephanie, Apr 2025SAN - SLC
Read more Alaska Airlines reviews

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.

The flight was delayed by 3 hours and 30 minutes without any explanation.

A little delay but nice flight, nice team. Thank you.

They lock the bathrooms too soon before landing! My bladder was bursting for over an hour. Then the plane had to sit on the taxiway for 1 hour. People started rushing to the bathroom. Creating a dangerous situation.

flight was late resulting in us missing our prepaid hotel shuttle

Only problem my credit card had over three pending credit card charges for luggages. I hope these charges do not post. I have already contacted my credit card companies.

Flight was late to board, then overweight. I booked a non stop flight for a reason, ended up having to re-fuel in Texas, arrived three hours late.

My seat was comfortable. There was no TV on the airplane.

Everything was good. Uneventful flight, which is the best kind.

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

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

It was terrible, if they ran flights on time it would make a big difference.

Delta seems to be improving in many areas, except they are super bad with the food available. Bring back normal food service on long flights.

I actually received a notification from kayak on email but not one by text from Delta when my departure gait changed and I almost missed my flight

New boarding doesn't make sense. Filling front first is slow.

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.

Horrible. Grateful to be alive but spent 13 hours at airport only to return back to my familys house and flight changed to next day. They tried to fix a part on plane, had no back up plane and after 10 hours , reattempted the flight and it STILL wasn't fixed. We got a meal voucher and rescheduled flight but there should be some other compensation for the 15 hours spent in airport

My seat was changed at the last minute and I was moved to the last row, right next to the bathroom despite selecting my seat well in advance. I was also made to check my carry on due to space but when I got on the plane there was significant empty overhead space. Picking up my carry on from the luggage carousel added time to my trip which had already been extended due to delay.

The gate was too far away for the connecting flight

Compared with other carriers business class for an overnight was not worth the extra expense.

Easy to board. Flight was super crowded though so I didn't sleep well on that cross country red-eye flight. The aisles seem ot have gotten narrower and the seat smaller whn luggage and people are getting bigger so it would be AWESOME to have more space and breathing room in general ;)

Pilot Erika DeLong made us feel safe and at ease in a frankly scary time to be flying. Her warm smile and greeting and excellent command of the aircraft in foggy bumpy weather helped us all to calm our nerves and get us home safely.

Plenty of room for me and the cat in Premium Economy. Seat was comfortable. Boarding was a breeze. The lady at the special check-in desk was great, super helpful and professional.

Wish movie and music choices changed more often. Mostly same from a month or two ago when I last flew.

It was good. Just that the seats could not be reclined. The people behind were not ready to let the chairs be reclined

Plane left & arrived early- 5 Crew great. Wi fi - paid for 2, only 1 worked - so so. Waste of $. Coolie was good

There was no USB plug in my section of the plane. So I could not charge my phone. Also, there was no screen to watch movie or anything like that. Wish I had known that in advance, I would’ve brought my iPad.

Made all groups except 2 check despite ample bin space. Inflight WiFi and entertainment didn’t work most of the time.

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

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.