Cheap Flights from Billings to San Diego

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Find the cheapest month to fly from Billings to San Diego

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Billings to San Diego flights are currently cheapest in October.

Alternative Billings to San Diego routes

Looking for the cheapest, fastest or easiest route from Billings to San Diego? You could fly into the following airports instead.

Billings to San Diego: Flight information

The things to know before you go.
Cheapest flight foundج.م.‏ 4,437
Cheapest month to flyOctober

Finding cheap flights from Billings to San Diego: Frequently asked questions

There are 2 airports in San Diego: San Diego International and McClellan-Palomar.
The best price we found for a return flight from Billings to San Diego is ج.م.‏ 12,335. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Billings to San Diego. But we found flights with one or more stops from ج.م.‏ 12,335.
As of September 2025, there are no flights flying from Billings to San Diego.
The cheapest month to fly from Billings to San Diego is usually October.
If you're flying from Billings Airport, the cheapest airport near San Diego is San Diego International – which is 4.1 km away from the centre of San Diego. We've found flights into this airport from ج.م.‏ 12,335.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Billings Airport to San Diego on Monday, 6 October 2025.
No airlines currently offer direct flights between Billings Airport and San Diego. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Diego but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Diego is around 40 days in advance, so don’t leave your flight to the last minute.
In September, the average temperature is usually around 22°C. August is typically the warmest month in San Diego, when it usually averages around 28°C. You can expect the least rain in June. The coldest month is December, with temperatures averaging 10°C. The rainiest month is February.
Currently, Allegiant Air offers the cheapest flight tickets to San Diego.

Travelling from Billings Logan International Airport (BIL) to San Diego: what you need to know

  • San Diego is one hour behind Billings, where Billings Logan International Airport is located. San Diego observes the UTC-7 timezone.

  • Give yourself plenty of time to make your BIL to San Diego flight. Generally, it's best to arrive two hours before international departures and an hour ahead for domestic flights.

  • Taking off during a peak period like a bank holiday? Expect longer queues at check-in and security. To give yourself peace of mind, arrive up to four hours before international flights and two hours before domestic departures.

  • The journey from central Billings to BIL takes around 25 minutes by public transport. If you drive, ride-share or get a cab, you'll cover the 3 kilometres in 10 minutes or so, depending on traffic conditions.

  • Searching for a hotel near BIL? If you're catching an early flight from Billings Logan International Airport to San Diego, these stays will put you moments from check-in:

  • 75.96% of flights taking off from Billings Logan International Airport arrive at their destination on time.

  • The address for BIL is 1901 Terminal Circle, Room 216.

How to find the cheapest flights from Billings Logan International Airport (BIL) to San Diego

  • ج.م.‏ 4,437 is currently the lowest price for a one-way Billings Logan International Airport to San Diego flight. Return flight tickets start at ج.م.‏ 12,335. These prices can change based on demand.

  • Booking ahead of time is often the key to securing a cheap flight from BIL to San Diego. Flight prices rise as demand increases, so the nearer you get to departure, the more you'll likely spend.

  • If you're willing to be flexible with your travel dates, try using the 'Whole month' tool. It'll give you the cheapest price across each month when looking for a Billings Logan International Airport to San Diego ticket.

  • Locking in a cheap flight from BIL to San Diego is easy with Price Alerts. Simply create one of these automatic notifications and we'll let you know as soon as a lower fare pops up.

  • Save on your flight from Billings Logan International Airport to San Diego with the help of our filters. Choose your preferred times, number of stops and airlines, then sort the results by 'Cheapest' to see the best deals.

Airports in San Diego

San Diego International Airport (SAN)

  • San Diego International Airport (SAN) is around 5 kilometres from central San Diego. If you're opting for a ride-share or a cab, the drive takes about 10 minutes.

  • Travelling to the centre by public transport takes about 20 minutes.

  • The last thing you need is a long journey to your hotel if you're arriving on a late flight from Billings Logan International Airport to San Diego. Book one of these accommodation options near SAN instead:

  • Begin your adventure by picking up a San Diego International Airport rental car. Grab your wheels from Thrifty, Dollar or Budget and experience the lesser-explored corners of San Diego and beyond.

  • For the lowest price, book your vehicle from San Diego International Airport around two weeks ahead of your flight from BIL to San Diego.

  • You'll find SAN at N Harbour Dr.

McClellan-Palomar Airport (CLD)

  • After your flight from Billings Logan International Airport to San Diego has hit the runway, you can get to the city centre in around 40 minutes by car. Central San Diego is roughly 56 kilometres from McClellan-Palomar Airport (CLD).

  • If you're travelling on public transport, it'll take around 2 hours 15 minutes.

  • After stepping off your BIL to San Diego flight, unwind at a hotel close to CLD. These are some comfortable options that'll help you slip into relaxation mode:

  • Budget, Hertz and Avis make picking up a McClellan-Palomar Airport rental car simple. These providers are located in or around the terminal and will have you ready to go in a flash.

  • Pick the vehicle you actually want, not just what's available, by booking your ride from CLD ahead of your arrival. You'll also avoid paying more than you have to, especially during busy airport times.

Best time to go to San Diego

  • Plan your trip to San Diego in peak season if you want a bustling atmosphere, but remember that prices are generally higher. Alternatively, book your flights from Billings Logan International Airport to San Diego in the off-season when prices are cheaper and it's less crowded.

  • Book a Billings Logan International Airport to San Diego flight ticket with a departure in August to explore the city during its warmest month. You can expect temperatures to range from 17ºC to 28ºC.

  • For cooler conditions, look for a cheap ticket from BIL to San Diego in February when temperatures average between 7ºC and 23ºC.

More about San Diego

  • When it comes to looking for somewhere to lay your head, you'll find the top stays in San Diego right here. Explore these options once you've booked your flight from Billings Logan International Airport to San Diego:

  • USS Midway Museum and San Diego Zoo are a couple of popular attractions to put on your San Diego itinerary. Keep the momentum going by heading to SeaWorld San Diego.

Explore more of United States

  • You've seen San Diego, now it's time to discover other corners of United States. Travel about 177 kilometres north-west to Los Angeles to tick off its top attractions. From Griffith Observatory to The Broad and La Brea Tar Pits & Museum, you'll have a full itinerary ahead.

  • Phoenix is another well-known destination in United States and is around 483 kilometres east of San Diego. No trip is complete without a visit to Desert Botanical Garden, Heard Museum and Papago Park.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.