--- title: "Santa Ana (SNA) to Missoula (MSO) flights: who flies it" description: "Allegiant Air flies Santa Ana (SNA) to Missoula (MSO) nonstop twice a week as G4 1588, scheduled at 2h 28m. See the full timetable and who flies it on 2LNR." canonical: "https://2lnr.com/routes/sna-mso" url: "https://2lnr.com/routes/sna-mso.md" date_modified: "2026-07-18T08:33:35Z" --- # Santa Ana to Missoula (SNA-MSO): nonstop flights and who flies them Allegiant Air flies nonstop from Santa Ana (SNA) to Missoula (MSO) just twice a week. In the timetable below it flies as G4 1588, scheduled at 2h 28m for the 936 miles. Schedule last changed July 18, 2026. Departure times come from 2LNR's schedule data; confirm with the airline before you book. Updated October 23, 2026. See SNA to MSO on the interactive map [Get started free](https://2lnr.com/login) 2 Flights a week, 4-week average 2h 28m Scheduled flight time 936 mi Nonstop distance Free To get started ## Santa Ana to Missoula flight schedule Scheduled nonstop departures for SNA to MSO starting October 22, 2026. The most recent change we recorded to this route's schedule was on July 18, 2026, and a settled schedule can go a long time without one. Airlines retime and cancel flights, so confirm with the airline before you book. Scheduled nonstop departures from Santa Ana (SNA) to Missoula (MSO) | Date | Flight | Airline | Departs SNA | Arrives MSO | Duration | Aircraft | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | Fri, Oct 23 | G4 1588 | Allegiant Air | 09:33 | 13:01 | 2h 28m | [Airbus A320](https://2lnr.com/seatmaps/g4/a320.md) | | Mon, Oct 26 | G4 1588 | Allegiant Air | 09:33 | 13:01 | 2h 28m | Airbus A320 | | Fri, Oct 30 | G4 1588 | Allegiant Air | 09:33 | 13:01 | 2h 28m | Airbus A320 | | Mon, Nov 2 | G4 1588 | Allegiant Air | 09:33 | 13:01 | 2h 28m | Airbus A320 | | Fri, Nov 6 | G4 1588 | Allegiant Air | 09:33 | 13:01 | 2h 28m | Airbus A320 | | Mon, Nov 9 | G4 1588 | Allegiant Air | 09:33 | 13:01 | 2h 28m | Airbus A320 | | Fri, Nov 13 | G4 1588 | Allegiant Air | 09:33 | 13:01 | 2h 28m | Airbus A320 | Showing all 7 scheduled SNA to MSO departures across 7 days with service, starting October 22, 2026. Later dates are on the interactive map. Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure. See every SNA to MSO date on the interactive map ## Aircraft on the Santa Ana to Missoula nonstop Allegiant Air flies the [Airbus A320](https://2lnr.com/seatmaps/g4/a320.md) on every departure in the schedule table on this page. Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure. ## The full SNA to MSO nonstop schedule This page carries the full SNA to MSO nonstop schedule, who operates each departure and how often it runs; the reverse direction is linked below. ### See the schedule Who operates each SNA to MSO nonstop and how often it runs, from 2LNR's schedule data. ### Plan on the map See SNA to MSO on the interactive route map, with schedules, connections, and route statistics. ## Airlines flying Santa Ana to Missoula nonstop Carriers operating SNA to MSO nonstop in the current schedule. - [Allegiant Air (G4) route map](https://2lnr.com/routes/airlines/g4.md)\ [The aircraft G4 flies](https://2lnr.com/seatmaps/g4.md) See SNA to MSO on the interactive map → ## Frequently asked questions about SNA to MSO **How long is the flight from Santa Ana (SNA) to Missoula (MSO)?** G4 1588 is scheduled at 2h 28m from Santa Ana (SNA) to Missoula (MSO) on every departure in the schedule table on this page. The nonstop covers about 936 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book. **Which airlines fly nonstop from SNA to MSO?** Allegiant Air is currently the only airline flying SNA to MSO nonstop. 2LNR doesn't show award or upgrade space for it on SNA to MSO, so this page carries the schedule rather than a space claim. **How often does SNA to MSO operate?** The SNA to MSO nonstop currently runs twice a week, on Allegiant Air. Thin schedules like this change by season, and on Pro an alert will catch anything added. **What time do flights from SNA to MSO depart?** In the next 7 days with service, every scheduled SNA to MSO nonstop leaves at 09:33 local time at Santa Ana. The schedule table on this page lists each departure by date. **Which flights operate SNA to MSO nonstop?** Allegiant Air flies G4 1588 nonstop from Santa Ana (SNA) to Missoula (MSO), the only flight number in the schedule table on this page. The table lists each date with its departure and arrival times and aircraft. **Does 2LNR show upgrade or award space on SNA to MSO?** Not on this route: 2LNR doesn't show award or upgrade space for Allegiant Air on SNA to MSO. The page carries the full SNA to MSO nonstop schedule and who flies each departure, and the reverse direction is linked below. Flying the other way? See [MSO to SNA nonstop flights](https://2lnr.com/routes/mso-sna.md). Award seats rather than schedules? See [award availability by airline](https://2lnr.com/awards.md). Looking beyond this route? See [every route from Santa Ana (SNA)](https://2lnr.com/routes/sna.md), or [every route from Missoula (MSO)](https://2lnr.com/routes/mso.md). Nonstops to Missoula (MSO) from other airports within 150 miles of Santa Ana (SNA): - [Los Angeles (LAX) to Missoula (MSO)](https://2lnr.com/routes/lax-mso.md), 37 miles from SNA - [San Diego (SAN) to Missoula (MSO)](https://2lnr.com/routes/san-mso.md), 76 miles from SNA Distances are great-circle between the airports, not driving distance. - [How to plan an upgrade by route](https://2lnr.com/guides/upgrade-strategy.md) ## See the full SNA to MSO nonstop schedule Every scheduled departure on this route, with who flies it. 2LNR shows upgrade and award space by date on the carriers it tracks, the next 14 days free on every product and the full horizon on Pro. [Get started free](https://2lnr.com/login)