SAN - MSO

$140 Find Cheap Flights from San Diego to Missoula

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 Missoula departing on 3/12. 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, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Missoula

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Diego to Missoula, 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 Missoula, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$228
Typical prices: $327-$394
Multiple Airlines
Thu 3/26Mon 3/30
SAN - MSO • 1 stop
Cheapest non-stop
$317
Alaska Airlines
Sat 7/4Sat 7/11
SAN - MSO • Non-stop
Top airlines
Delta
Cheapest • from $263 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top layover airports
Denver (DEN)
Cheapest • Avg $380 (round-trip)
Salt Lake City (SLC)
Shortest trip • 4h 51m (one-way)
Insights
Insights
Insights
Insights
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 45% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 22% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Missoula!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from San Diego to Missoula (SAN-MSO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Diego to Missoula 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 Missoula

Thu, Mar 26 - Mon, Mar 30
Multiple Airlines Logo
9:59 pm - 7:27 pm
SAN
-
MSO
20h 28m
1 stop
Multiple Airlines Logo
8:17 pm - 1:13 pm
MSO
-
SAN
17h 56m
1 stop
$228Multiple Airlines
Thu, Mar 12 - Mon, Mar 16
Multiple Airlines Logo
9:07 pm - 3:15 pm
SAN
-
MSO
17h 08m
1 stop
Multiple Airlines Logo
8:17 pm - 1:13 pm
MSO
-
SAN
17h 56m
1 stop
$261Multiple Airlines
Tue, Mar 24 - Tue, Mar 31
Delta Logo
6:15 am - 12:16 pm
SAN
-
MSO
5h 01m
1 stop
Delta Logo
5:20 am - 2:44 pm
MSO
-
SAN
10h 24m
2 stops
$263Delta
Thu, Apr 30 - Sat, May 9
Alaska Airlines Logo
7:35 pm - 2:59 pm
SAN
-
MSO
18h 24m
1 stop
Alaska Airlines Logo
3:55 pm - 9:55 am
MSO
-
SAN
19h 00m
1 stop
$270Alaska Airlines
Wed, Apr 1 - Wed, Apr 8
Delta Logo
7:05 pm - 12:24 am
SAN
-
MSO
4h 19m
1 stop
Delta Logo
6:04 pm - 11:48 pm
MSO
-
SAN
6h 44m
1 stop
$284Delta
Wed, Mar 25 - Mon, Mar 30
Delta Logo
7:05 pm - 12:24 am
SAN
-
MSO
4h 19m
1 stop
Delta Logo
5:20 am - 2:44 pm
MSO
-
SAN
10h 24m
2 stops
$286Delta
Thu, Apr 30 - Sat, May 9
Alaska Airlines Logo
2:23 pm - 11:50 pm
SAN
-
MSO
8h 27m
1 stop
Alaska Airlines Logo
3:55 pm - 12:04 pm
MSO
-
SAN
21h 09m
1 stop
$288Alaska Airlines
Wed, Apr 1 - Wed, Apr 8
Delta Logo
7:05 pm - 12:24 am
SAN
-
MSO
4h 19m
1 stop
Delta Logo
5:20 am - 2:54 pm
MSO
-
SAN
10h 34m
2 stops
$289Delta
Wed, Mar 25 - Tue, Mar 31
Delta Logo
3:45 pm - 12:24 am
SAN
-
MSO
7h 39m
2 stops
Delta Logo
5:20 am - 2:44 pm
MSO
-
SAN
10h 24m
2 stops
$292Delta
Wed, Apr 1 - Wed, Apr 8
Delta Logo
7:05 pm - 12:24 am
SAN
-
MSO
4h 19m
1 stop
Delta Logo
6:04 pm - 11:48 pm
MSO
-
SAN
6h 44m
1 stop
$304Delta
Booking Insights

KAYAK's insights & trends for San Diego to Missoula flights

Get data-powered insights and trends into flights from San Diego to Missoula to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from San Diego to Missoula?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from San Diego to Missoula departing in March.

What is the cheapest month to fly from San Diego to Missoula?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Diego to Missoula, 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 Missoula is January, where tickets cost $312 (return) on average. On the other hand, the most expensive months are December and February, where the average cost of round-trip tickets is $585 and $533 respectively.

Can I save money by flying with a layover from San Diego to Missoula?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $383 on average.

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

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 Missoula, 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 Missoula, you should book around 3 weeks before departure, which saves you about 45% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$140
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly and prices are also 10% lower on average.
Flight from San Diego to Missoula

When to book flights from San Diego to Missoula

Are your dates flexible? Find out the best times to travel from San Diego to Missoula 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 Missoula

  • What is the cheapest flight from San Diego to Missoula?

    In the last 3 days, the lowest price for a flight from San Diego to Missoula was $140 for a one-way ticket and $228 for a round-trip.

  • Do I need a passport to fly between San Diego and Missoula?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which aircraft models fly most regularly from San Diego to Missoula?

    The Embraer 175 is the aircraft model that flies most regularly on the San Diego to Missoula flight route.

  • Which airline alliances offer flights from San Diego to Missoula?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between San Diego and Missoula, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from San Diego to Missoula, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from San Diego to Missoula are Alaska Airlines and Delta. With an average price for the route of $385 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $356 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from San Diego to Missoula?

    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 Missoula.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Diego to Missoula?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Missoula 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 Missoula?

    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 Missoula with an airline and back to San Diego with another airline. Booking your flights between San Diego and MSO 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 Missoula?

    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 Missoula 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 4 airlines serving from San Diego to Missoula

 
See real verified KAYAK customer reviews for airlines flying from San Diego to Missoula. 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 Missoula? 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 11965 reviews
7.1Food
7.0Entertainment
8.5Crew
7.8Comfort
8.1Boarding
Airline reviews

I bought tickets MONTHS ago for a flight that left SAN at 14:30. That is what it says on our tickets. I was never notified of any time changes. During online check-in. I discovered the flight time had been changed to 15:45. This was unacceptable and had I been notified, I would have changed flights, or airlines. That departure time was unworkable with our plans. We called Alaska and asked for an explanation. They said flight time was changed 11/08/25. No proof of notification could be offered. We asked to be moved to an earlier flight. After much pleading, the rep said she would allow a “one time exception..” While I appreciate being moved, this was YOUR fault Alaska Airlines.

2.0 MediocreLinda, Feb 2026
SAN - SMF
Read more Alaska Airlines reviews

I bought tickets MONTHS ago for a flight that left SAN at 14:30. That is what it says on our tickets. I was never notified of any time changes. During online check-in. I discovered the flight time had been changed to 15:45. This was unacceptable and had I been notified, I would have changed flights, or airlines. That departure time was unworkable with our plans. We called Alaska and asked for an explanation. They said flight time was changed 11/08/25. No proof of notification could be offered. We asked to be moved to an earlier flight. After much pleading, the rep said she would allow a “one time exception..” While I appreciate being moved, this was YOUR fault Alaska Airlines.

The room for legs is adequate for a 6’ tall man and the flight was comfortable. The cabin is clean and the crew is very friendly and pleasant.

Worst first/business class I have ever flown after 75 years on planes. Barely acceptable seats, terrible food, uninterested attendants, unavailable WiFi. I’ll never fly this airline again.

Again, very smooth and all of the Alaska folks were great. They continue to meet all my needs.

The whole experience went smoothly with no hitches along the way.

My Alaska Airlines return flight, although worked out in the end, didn't start off well. The initial plane that my family and I boarded was grounded because of a mishap that happened to one of the engines and everyone on board had to disembark the plane. Thankfully we were accommodated with a another plane but our initial flight was supposed to have departed at 11 pm San Diego time for Orlando but instead we ended up leaving at 1:40 am San Diego time. All Passengers were informed that part of the delay was that the plane had to be inspected by the captain, the food had to be stocked and the individuals responsible for fueling the plane left for the evening and had to be summoned to return to fill up our. The Alaska Airlines crew at the airport and on the plane were awesome and apologetic. I know that the crew wasn't responsible for the mishap of the engine but I think in the future the airline should offer a complimentary drink or (1) item of food other than pretzels, nuts or chips to all passengers since we're not to blame for the extreme set backs. The airline in general is good and I recommend to all flyers.

Late leaving so threatened our connection in Vegas to Seattle. We did make up time and made our connection.

Dropping off of the checked bags took way longer than it should have. The agent for the pre-tagged and ready to drop off line was gone and didn't come back for about 15 minutes. The other bag check lines were barely moving. Agents were standing around and not much was getting done. Everything else about the flight was great.

Was late but $50 voucher was great benefit of the summit card.

See previous. It was the flight from Honolulu to Kapalua that was cancelled.

Flight was delayed by 3-hours and their fix was… complimentary pretzels.

The crew, and fellow passengers, were super gracious and kind. There seemed to be plenty of bin space even though the plane was full. It’s nice to get a glass of wine with dinner in Premiere seating, and there was a lot of food.

Everything I mentioned earlier - the airbus was more comfortable indeed and the experience was further enhanced.

The plane was an older model, so it wasn’t as comfortable as others. The flight attendants were not helpful during onboarding. It was a full flight so there was chaos finding space for baggage.

Awesome! On time flight, early arrival, and a complimentary upgrade!

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

Delta’s staff is unmatched. From the gate agents, to the pilots, to the flight attendants… all top of the industry.

The flight was delayed for about 2 hrs. Other than it, it was good.

I am extremely disappointed that delta internal pilot manuals now refer to the Gulf of Mexico as the “gulf of America”. You can bow down to the Orange turd on your own. I will never fly delta again

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

No charging outlets worked. Other than collecting trash attendants didn’t come around. No one could hear flight attendants announcements during the flight. Seat pads were horrible. Sitting on a board for 5 hours. What happened to Hawaiian airlines comfort, hospitality, and extras? Our pilots did an excellent job trying to minimize turbulence and incredible job in landing in windy conditions.

I like that if they asked you to checked in a bag at the gate they give you priority to board

I received several emails about my 3:10 flight. When I showed up to the airport at 12:30 to check my bags I was told the flight was actually at 1 pm. They grudgingly rebooked me for a flight at 5:22 to Vegas to get a connecting to LAX. I did find the gate for my original 3:10 flight but they were booked. I proceeded to receive status updates and gate change information for the 3:10 flight, even though I was apparently never supposed to be on that flight

The food options were limited and very specific. Some type of entertainment option for a 4.5 hour flight would have been nice.

The Kayak confirmation number did not work for checking in the day before. I checked in at 8.30 using my ticket number. When I arrived at the airport, I was informed that the flight was overbooked, and since I had checked in late, I did not have a seat. The Next flight was not until ten PM. I called my wife, who had been taking care of our kids all weekend, and she was upset, calling me a liar and telling me to stay in SD. It turned my weekend getaway into a nightmare! I blame the Kayak website and will not book flights using your app in the future.

comfortable but the food is horrible. I have flown Hawaiian several times now and no matter what they say the food is its the same squashed bread with melted goop inside. Tastes fake and isnt what they represent, its quite nasty. What happend to real food? And there is NO entertainment!! so not sure why they are asking for a review on that.

Good and friendly staff. Nicely enjoyed the complimentary drink and snack.

I was very, very cold and a stranger loaned me her sweater next to me. I didn’t wanna buy a blanket just for a four hour trip when I did not need the pillow or the earphones. I don’t mind purchasing a blanket, but I only needed that not all of it accessories. Cold air pretty much blew the entire trip. Two people in front of me both bought the blanket packages. Maybe that’s the idea. The crew was exceptionally nice and passed through multiple times.. the restrooms were very clean and usually accessible.

3 hour wait on customer service after flight was cancelled. Was bumped to a flight where I wouldnt have gotten to my destination for another 2 days. Had to fully refund flight and book a new one the following morning. Paid twice the amount for the flight than I had originally booked. Very disappointed I was not offered any sort of discount or points for all of the frustration, in fact the airline profited twice as much off of me by cancelling my flight and and changing my entire trip.

I understand that both Hawaiian and Alaskan are in the process of merging but I could not get real-time flight info or access my boarding pass on either app

Women boarding passengers at the gate was absolutely rude and disrespectful of passengers. The flight attendant was absolutely delightful! Smiling and connected with the passengers. So happy. The seats are cramped and uncomfortable but I guess that’s just the way it is Communication regarding flight was excellent

it was a very short flight so my expectations were low.

Very disappointing given gate agent behavior. Filed a formal complaint with United.

Crew was great (professional, attentive, prompt). Snacks for 4 hrs flight is deplorable.

Flight delayed. WiFi connectivity very poor if not existant. Last minute arrival forced me to run to catch my connection.

Terrible. No customer service, no food, no drinks on a 6 hour premier economy booking.

The food was terrible this time. Otherwise pleasant, quiet, on-time.

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

The flight crew where really good. Better then the crew from BNE to SFO

left on time, reasonable boarding process arrived early luggage came out quickly

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

Information on your arrival and departure airports