Cheap Flights from Missoula to San Diego

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Compare Missoula to San Diego flight deals

Find the cheapest month or even day of the year to fly to San Diego

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Flight deals from Missoula to San Diego

Looking for a cheap last-minute deal or the best return flight from Missoula Airport to San Diego? If you want to travel next month, return fares start from $769. Find the lowest prices on one-way and return tickets right here.

San Diego.$769 per passenger.Departing Mon, 4 Jan, returning Thu, 4 Mar.Return flight with United.Outbound indirect flight with United, departs from Missoula on Mon, 4 Jan, arriving in San Diego International.Inbound indirect flight with United, departs from San Diego International on Thu, 4 Mar, arriving in Missoula.Price includes taxes and charges.From $769, select.

San Diego.$769 per passenger.Departing Sun, 11 Oct, returning Wed, 14 Oct.Return flight with Allegiant Air and Alaska Airlines.Outbound indirect flight with Allegiant Air, departs from Missoula on Sun, 11 Oct, arriving in San Diego International.Inbound indirect flight with Alaska Airlines, departs from San Diego International on Wed, 14 Oct, arriving in Missoula.Price includes taxes and charges.From $769, select.

San Diego.$774 per passenger.Departing Thu, 29 Oct, returning Mon, 2 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from Missoula on Thu, 29 Oct, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Mon, 2 Nov, arriving in Missoula.Price includes taxes and charges.From $774, select.

San Diego.$774 per passenger.Departing Thu, 13 May, returning Tue, 25 May.Return flight with Delta.Outbound indirect flight with Delta, departs from Missoula on Thu, 13 May, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Tue, 25 May, arriving in Missoula.Price includes taxes and charges.From $774, select.

San Diego.$775 per passenger.Departing Tue, 15 Dec, returning Tue, 5 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from Missoula on Tue, 15 Dec, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Tue, 5 Jan, arriving in Missoula.Price includes taxes and charges.From $775, select.

San Diego.$778 per passenger.Departing Sat, 13 Mar, returning Sat, 20 Mar.Return flight with Delta.Outbound indirect flight with Delta, departs from Missoula on Sat, 13 Mar, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Sat, 20 Mar, arriving in Missoula.Price includes taxes and charges.From $778, select.

San Diego.$778 per passenger.Departing Fri, 12 Feb, returning Tue, 16 Feb.Return flight with Delta.Outbound indirect flight with Delta, departs from Missoula on Fri, 12 Feb, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Tue, 16 Feb, arriving in Missoula.Price includes taxes and charges.From $778, select.

San Diego.$814 per passenger.Departing Tue, 15 Dec, returning Thu, 31 Dec.Return flight with United.Outbound indirect flight with United, departs from Missoula on Tue, 15 Dec, arriving in San Diego International.Inbound indirect flight with United, departs from San Diego International on Thu, 31 Dec, arriving in Missoula.Price includes taxes and charges.From $814, select.

San Diego.$877 per passenger.Departing Mon, 16 Nov, returning Wed, 18 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from Missoula on Mon, 16 Nov, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Wed, 18 Nov, arriving in Missoula.Price includes taxes and charges.From $877, select.

San Diego.$1,058 per passenger.Departing Wed, 30 Sep, returning Mon, 5 Oct.Return flight with United.Outbound indirect flight with United, departs from Missoula on Wed, 30 Sep, arriving in San Diego International.Inbound indirect flight with United, departs from San Diego International on Mon, 5 Oct, arriving in Missoula.Price includes taxes and charges.From $1,058, select.

Find the cheapest month to fly from Missoula to San Diego

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

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Direct flights from Missoula to San Diego

Alternative Missoula to San Diego routes

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

San Diego International

4km from central San Diego

ClosestCheapest

from $769

Search flights

McClellan-Palomar

48km from central San Diego

Search flights

Missoula to San Diego: Flight information

The things to know before you go.

Cheapest flight found	$769
Cheapest month to fly	January
Average flight time	2 hrs, 52 mins
Most popular airline	Alaska Airlines
Average flights per week	3

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

How many airports are there in San Diego?

There are 2 airports in San Diego: San Diego International and McClellan-Palomar.

How much are return flights from Missoula to San Diego?

The best price we found for a return flight from Missoula to San Diego is $769. 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.

How long does it take to fly from Missoula to San Diego?

2 hours and 52 minutes is the average flight time from Missoula to San Diego.

Which airlines fly direct from Missoula to San Diego?

Alaska Airlines, Horizon Air and American Airlines fly direct from Missoula to San Diego.

How many flights are there a week from Missoula to San Diego?

As of September 2026, there are 3 flights per week flying from Missoula to San Diego.

When is the cheapest time to fly from Missoula to San Diego?

The cheapest month to fly from Missoula to San Diego is usually January.

Which is the cheapest airport to fly into in San Diego?

If you're flying from Missoula 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 $769.

Which upcoming date is cheapest to fly from Missoula Airport to San Diego on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Missoula Airport to San Diego on Monday, 4 January 2027.

Can I get a direct flight from Missoula Airport to San Diego?

Yes – the average flight time is 2 hours and 52 minutes.

How can I get the best flight deal from Missoula Airport to San Diego?

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.

When is the best time to book flights to San Diego?

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.

What’s the weather like in San Diego?

In September, the average temperature is usually around 21°C. September is typically the warmest month in San Diego, when it usually averages around 24°C. You can expect the least rain in July. The coldest month is March, with temperatures averaging 12°C. The rainiest month is March.

Which is the cheapest airline to fly from Missoula Airport to San Diego with?

Currently, United offers the cheapest flight tickets to San Diego.

Travelling from Missoula Montana Airport (MSO) to San Diego: what you need to know

Take a direct flight from Missoula Montana Airport to San Diego and you'll be travelling for an average of 2 hours 50 minutes.
Missoula Montana Airport is located in Missoula. Following the UTC-8 timezone, San Diego is one hour behind Missoula.
To avoid missing your MSO to San Diego flight, allow plenty of time to check in and drop off your luggage. Turning up two hours before international departures and one hour before domestic flights is the standard rule.
Flying during a popular month like July? Major public holidays and other high seasons can mean longer lines and delays at security. Play things extra safe and get there up to four hours before an international flight and two hours before domestic departures.
Direct Missoula Montana Airport to San Diego tickets are available for booking. San Diego International Airport (SAN) is where you'll disembark.
Alaska Airlines is a well-known airline that operates direct flights from Missoula Montana Airport to San Diego.
Travelling from central Missoula to MSO takes around 30 minutes on public transport. If you drive, ride-share or take a taxi, you'll cover the 8 kilometres in 15 minutes or so, depending on traffic.
Want an easy start to your travels? Stay near MSO. Whether you've booked an early flight from Missoula Montana Airport to San Diego or want to avoid feeling rushed, these hotels are all about convenience:
Missoula Montana Airport scores top marks for its on-time performance. 83% of flights that depart MSO reach their destination on time.
MSO is located at 5225 Highway 10 West.

How to find the cheapest flights from Missoula Montana Airport (MSO) to San Diego

$407 is the cheapest price we've found for a one-way Missoula Montana Airport to San Diego flight. A return ticket right now is $769. Depending on when you book and the availability, these fares may change.
Don't leave things to the last minute. You're more likely to find cheap flights from MSO to San Diego if you book early. Airlines often have some excellent early bird rates.
If you're willing to be flexible with your travel plans, use the 'Whole month' tool. It'll give you the cheapest price across every month when searching for a Missoula Montana Airport to San Diego ticket.
Locking in a cheap flight from MSO to San Diego is easy with Price Alerts. All you need to do is create one of these automatic notifications and we'll notify you as soon as a better deal is available.
Save on your flight from Missoula Montana Airport to San Diego with the help of our filters. Choose your ideal duration, number of stops and airlines, then sort the results by 'Cheapest' for the best deals.

Airports in San Diego

San Diego International Airport (SAN)

San Diego International Airport (SAN) to central San Diego takes about 15 minutes to reach by car. The centre is roughly 5 kilometres away.
It takes around 25 minutes to get there by public transport.
If you have a late flight from Missoula Montana Airport to San Diego, nothing beats the convenience of staying near the terminal. Grab your bags from the carousel and then be showered and snoozing soon after at one of these accommodation options near SAN:
To get the lowest price, reserve your ride from San Diego International Airport around two weeks ahead of your flight from MSO to San Diego.
The street address for SAN is N Harbour Dr.

McClellan-Palomar Airport (CLD)

Central San Diego is roughly 48 kilometres from McClellan-Palomar Airport (CLD). Step off your flight from Missoula Montana Airport to San Diego and then keep a lookout for any airport signs directing you to the centre.
You'll find some comfortable places to call home for the night near CLD. Unwind and get cosy after your MSO to San Diego flight at any of these well-located options:
Avoid filling out forms at the rental desk by completing your booking beforehand. Secure your ride from CLD a few weeks in advance so you can simply collect the keys and drive away.

Best time to go to San Diego

December is the quietest month for flights from Missoula Montana Airport to San Diego, while July is the most popular. Choose the ideal time to go to San Diego based on whether you like a bustling atmosphere or a more laid-back vibe.
The warmest month in San Diego is August, with temperatures ranging between 16ºC and 27ºC. Lock in your Missoula Montana Airport to San Diego plane ticket then if that's your idea of comfortable weather.
Search for cheap tickets from MSO to San Diego in February if you'd rather travel when it's cooler. Temperatures are at their lowest then, ranging between 8ºC and 22ºC on average.

More about San Diego

Start your San Diego trip off on the right foot by choosing the perfect place to stay. Once you've booked your flight from Missoula Montana Airport to San Diego, check out our range of accommodation options including:
Every great holiday has to include some sightseeing. San Diego Balboa Park, San Diego Zoo and USS Midway Museum are attractions you won't want to skip in San Diego.

Explore more of the United States

San Diego will leave a lasting impression, but there are so many other parts of the United States just waiting to be discovered. About 177 kilometres northwest of San Diego, a trip to Los Angeles will keep your itinerary busy. Start with popular sights like Hollywood Sign, Universal Studios Hollywood and Hollywood Bowl.
If you're interested in discovering another corner of the United States, head for Phoenix, roughly 483 kilometres east of San Diego. Camelback Mountain, Yayoi Kusama Fireflies Infinity Mirror Room and Heard Museum are key highlights.