262 € Cheap Flights from San Diego to Missoula

Compare San Diego to Missoula flight deals

Find the cheapest month or even day of the year to fly to Missoula

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Flight deals from San Diego to Missoula Airport

Looking for a cheap last-minute deal or the best return flight from San Diego to Missoula Airport? If you want to travel next month, return fares start from 299 €. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from San Diego to Missoula

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

Direct flights from San Diego to Missoula

San Diego to Missoula: Alternative routes

Compare routes from San Diego to Missoula below. You may find an airport to fly into that's cheaper, faster, or easier than Missoula.

San Diego to Missoula: Flight information

The things to know before you go.
Cheapest flight found262 €
Cheapest month to flyJune
Average flight time2 hrs, 48 mins
Most popular airlineHorizon Air
Average flights per week8

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

The best price we found for a return flight from San Diego to Missoula is 262 €. 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.
2 hours and 48 minutes is the average flight time from San Diego to Missoula.
Horizon Air, Alaska Airlines and American Airlines fly direct from San Diego to Missoula.
As of March 2026, there are 8 flights per week flying from San Diego to Missoula.
The cheapest month to fly from San Diego to Missoula is usually June.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from San Diego to Missoula Airport on Saturday, 13 June 2026.
Yes – the average flight time is 2 hours and 48 minutes.
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 Missoula 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 Missoula is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Missoula is Frontier Airlines .

Flying from San Diego to Missoula International Airport (MSO): What you need to know

  • Begin your trip planning by looking up the best departure point for your flight from San Diego to Missoula International Airport (MSO). Explore the options for setting off from San Diego International Airport (SAN) or McClellan-Palomar Airport (CLD), the city's main airports.

  • Take off on a direct San Diego to Missoula International Airport flight and you'll be in the air for an average of 2 hours 45 minutes.

  • The timezone in Missoula is UTC-6, which is one hour ahead of San Diego. Missoula International Airport is located in Missoula.

  • For a stress-free journey, arrive at the airport two hours ahead of international flights and one hour before domestic departures. This way, you can comfortably board your flight from San Diego to MSO.

  • If you're jetting off during a bank holiday or other peak period, allow extra time. Get there two hours ahead of domestic flights and up to four hours before international departures. Queues at security and check-in will be longer.

Airports in San Diego

San Diego International Airport (SAN)

  • San Diego International Airport (SAN) makes it easy to travel directly to your destination. Nonstop flights from San Diego to Missoula International Airport (MSO) can be booked from this terminal.

  • You'll find a direct flight from San Diego to Missoula International Airport with Alaska Airlines. This top carrier operates services from SAN.

  • The majority of passengers prefer to book seats with Alaska Airlines between SAN and MSO.

  • Located around 5 kilometres from central San Diego, SAN can be reached in about 10 minutes by car (depending on traffic). The journey by public transport takes roughly 20 minutes.

  • Searching for a convenient hotel close to San Diego International Airport? If you've booked an early flight from San Diego to Missoula International Airport, these accommodation options will put you moments from check-in:

  • When it comes to San Diego International Airport's on-time performance, data shows 71.38% of flights meet their scheduled arrival time.

  • You'll find SAN at N Harbour Dr.

McClellan-Palomar Airport (CLD)

  • CLD is around 56 kilometres from central San Diego. It'll take 40 minutes or so to get to the airport driving from the city centre. Public transport takes roughly 2 hours 15 minutes.

  • Flying out early in the morning? You might like to check in to one of these accommodation options near McClellan-Palomar Airport the day before your San Diego to MSO flight:

About Missoula International Airport (MSO)

Getting from Missoula International Airport (MSO) to central Missoula

  • From Missoula International Airport, central Missoula is around 11 kilometres away. It takes about 10 minutes to reach the city centre by car.

  • Travelling on public transport will take you around 35 minutes.

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

  • Right now, 108 € is the lowest price we've found for a one-way ticket from San Diego to Missoula International Airport. The cheapest price for a return flight is 262 €. Keep in mind fares may change due to availability at the time of booking.

  • Get cheap flights from San Diego to MSO by booking one month ahead. Based on our research, that's the ideal time frame for picking up a bargain.

  • Schedule your trip for June. That's the best month for landing a great bargain on San Diego to Missoula International Airport tickets. If you're flexible with your travel dates, use the 'Whole month' tool to find the cheapest price across each month.

  • Spend less time searching for cheap plane tickets from San Diego to MSO by creating a Price Alert. We'll send you an email or notification on the app when a new discounted fare appears.

  • Hunt down a great price on a flight from San Diego to Missoula International Airport with the help of the filters. Pick your preferred arrival and departure times, number of stops and airlines. You can also sort your results by 'Cheapest,' 'Fastest' or 'Best.'

The best time to fly from San Diego to Missoula International Airport (MSO)

  • July is when most people book flights from San Diego to Missoula International Airport (MSO). Plan your visit to Missoula in February for a more low-key escape.

  • Lock in a San Diego to MSO plane ticket departing in July if you want to experience the city during its warmest month. You can expect temperatures in Missoula to range from 8ºC (46ºF) to 33ºC (91ºF).

  • If you like travelling in cooler conditions, search for a cheap ticket from San Diego to Missoula International Airport in December when temperatures are between -15ºC (5ºF) and 3ºC (37ºF).

More about Missoula

Explore more of the United States

  • You've seen Missoula, now it's time to explore other corners of the United States. Journey around 257 kilometres west to Spokane to tick off its leading sights. From Spokane Falls (Upper Falls) to Riverside State Park and Riverside State Park - Equestrian Campground and Day-Use, there's plenty to keep you on the go.

  • Spokane Valley is another standout destination in the United States and is around 257 kilometres west of Missoula. No journey is complete without seeing Nodland Cellars, Bead Lake Loop and Appleway Trail.

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