⚡ Fare recorded April 25, 2026 · Prices change daily

San Diego to Boise flights

San Diego (SAN) to Boise (BOI): 750 miles (1,207 km) great-circle, about 2h 00m nonstop by our estimate. Cheapest fare observed: $149 round-trip on Southwest, with 1 stop, departing May 24, 2026.

WNSouthwestWN409
Depart
SAN
San Diego, USA
07:20
2026-05-24
✈
Arrive
BOI
Boise, United States
Returns 12:20
2026-05-31
Stops
1 stop
Distance
750 mi
Est. nonstop time
2h 00m
Trip type
Round-trip
$149
Round-trip · per person
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About this flight

When did the cheapest San Diego to Boise fare fly?

$149 round-trip, Southwest WN409, departing 2026-05-24 at 07:20, returning 2026-05-31. The recorded itinerary left on a Sunday, returning on a Sunday 7 nights later; the fare was observed 29 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.

Route facts

How far is San Diego from Boise?

  • Distance: 750 miles (1,207 km) great-circle, heading north.
  • Estimated nonstop flight time: about 2h 00m.
  • Departure airport: San Diego International Airport (SAN), San Diego, United States, UTC-7 on May 24, 2026.
  • Arrival: Boise Air Trml/Gowen Field (BOI), United States, UTC-6 on May 24, 2026.
  • Time difference: Boise is 1 hour ahead of San Diego on the recorded date.
  • Route type: domestic, within United States.
  • Arrival airport elevation: 2,871 ft.
  • Recorded itinerary: Southwest WN409, 1 stop, round-trip, 7 days between departure and return.
Fare comparison

How does the San Diego to Boise fare compare with other routes from SAN?

At $149, it ranked 4th of the 30 round-trip fares we recorded from SAN (median $279). That is 19.9 cents per great-circle mile (round-trip price over one-way distance), above the SAN median of 15.0 cents across 30 round-trip routes.

Routes from SAN of similar length: Denver (852 mi) at $123 and Salt Lake City (627 mi) at $153.

Southwest had the cheapest fare on 3 of 30 SAN routes. It is the 26th longest of the 30 routes we track from SAN.

Other ways in

What did other cities pay to fly to Boise?

Of 2 departure airports with a fare to Boise, San Diego (SAN) ranked 1st at $149. Lowest: $149 from San Diego (SAN); highest: $202 from Atlanta (ATL); 0 nonstop. Cheapest-fare airlines (routes): Southwest (2).

Sources

Where do these numbers come from?

Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/Los_Angeles, America/Boise; flight time is our estimate.

FAQ

San Diego to Boise flight questions

How far is San Diego from Boise by plane?

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San Diego is about 750 miles (1,207 km) from Boise on a great-circle line from San Diego International Airport (SAN) to Boise Air Trml/Gowen Field (BOI), heading north. It is the 26th longest of the 30 routes we track from SAN. The recorded itinerary had 1 stop, so the distance flown was longer.

How long is the flight from San Diego to Boise?

+
About 2h 00m nonstop by our estimate for 750 miles (500 mph cruise plus 30 minutes, not a timetable). The recorded Southwest fare was with 1 stop. 2 airports in our feed had a fare to Boise; this one ranked 1st, and 0 of the 2 were nonstop.

What is the time difference between San Diego and Boise?

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On May 24, 2026, San Diego was on UTC-7 (America/Los_Angeles) and Boise on UTC-6 (America/Boise), so Boise was 1 hour ahead of San Diego: noon in San Diego was 13:00 in Boise. Both zones shift for daylight saving together, so the gap stays the same in January and July.

How much is a flight from San Diego to Boise?

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As observed on April 25, 2026: $149 per person round-trip on Southwest flight WN409, departing May 24, 2026, returning May 31, 2026, with 1 stop. At $149, it ranked 4th of the 30 round-trip fares we recorded from SAN (median $279). That is 19.9 cents per great-circle mile (round-trip price over one-way distance), above the SAN median of 15.0 cents across 30 round-trip routes. Prices change daily, so check the live fare.

Is there a nonstop flight from San Diego to Boise?

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The cheapest recorded fare had 1 stop; our feed keeps only the cheapest fare per route, so a pricier nonstop may exist. Into Boise, 0 of the 2 recorded fares were nonstop. From SAN, 6 of 30 were. Routes from SAN of similar length: Denver (852 mi) at $123 and Salt Lake City (627 mi) at $153.

Which airports serve flights from San Diego to Boise?

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It departs San Diego International Airport (SAN) in San Diego, United States, and arrives at Boise Air Trml/Gowen Field (BOI) in Boise, United States. A domestic United States flight. Southwest had the cheapest fare on 3 of 30 SAN routes.

Where else near Boise can you fly from San Diego?

Salt Lake City (SLC) $153Seattle (SEA) $172Las Vegas (LAS) $52San Francisco (SFO) $185Denver (DEN) $123Los Angeles (LAX) $277All flights from San Diego →

Other cities with flights to Boise

From Atlanta (ATL) $202

Ready to fly?

Book Southwest SAN → BOI · $149 →