Boise to San Diego: what the flight costs
In the last 60 days we checked this route 18 times. The typical return was £323 per person and the lowest £259, taxes and fees included.
| Per person | |
|---|---|
| Lowest seen | £259 |
| Typical (median) | £323 |
| Price checks, 60 days | 18 |
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Trips we picked on this route
The weekend after · from Boise
San Diego
30 Oct – 1 Nov 2026 · 2 nights
- 2h 21m nonstop, leaving 7:20 AM and landing 8:41 AM
- $411 per person, $18 under the typical $429 fare
- Typical highs of 72–75°F, free cancellation at all three hotels
£905 for two · 2 nights · flights, hotel, taxes, fees & the resort fee
Flights £620 + hotel £253 + resort fee £33, taxes in · a checked bag each adds about £106
Alaska. Operated by Horizon Air as Alaska Horizon · nonstop · 2h 21m
The catch: A checked bag runs about $140 for two and isn't in the total, and the weather normals show overcast skies all three days.
Worth it if you want a mild, easy city-and-coast weekend with carry-ons only; skip it if you're counting on clear blue skies.
Just found · from BoiseLowest in 30 days
San Diego
23 – 25 Oct 2026 · 2 nights
- Nonstop on Alaska. Operated by Horizon Air as Alaska Horizon, 2h 21m
- £35 per person below the typical fare on this route
- Lowest in 30 days on this route
£871 for two · 2 nights · flights, hotel, taxes & fees
Flights £571 + hotel £300, taxes in · a checked bag each adds about £106
Alaska. Operated by Horizon Air as Alaska Horizon · nonstop · 2h 21m
The catch: The best-value hotel is rated 7.9; a better one costs more.
Worth it if you want sun, sand and a pool; skip it if you want a city to walk.
Every fare we found in the last 30 days
| Checked | Trip dates | Per person | Airline | Stops | Duration | Source |
|---|---|---|---|---|---|---|
| 15 Oct 2026 | 30 Oct – 1 Nov 2026 | £336 | AS | with a stop | 7h 24m | Kiwi.com |
| 15 Oct 2026 | 30 Oct – 1 Nov 2026 | £310 | Alaska. Operated by Horizon Air as Alaska Horizon | nonstop | 2h 21m | Google Flights |
| 15 Oct 2026 | 23 – 25 Oct 2026 | £335 | AS | with a stop | 18h 42m | Kiwi.com |
| 15 Oct 2026 | 23 – 25 Oct 2026 | £259 | Frontier | with a stop | 5h 59m | Google Flights |
| 15 Oct 2026 | 30 Oct – 1 Nov 2026 | £323 | AS | with a stop | 4h 26m | Kiwi.com |
| 15 Oct 2026 | 23 – 25 Oct 2026 | £335 | AS + F9 | with a stop | 2h 21m | Kiwi.com |
| 14 Oct 2026 | 16 – 18 Oct 2026 | £498 | AS + F9 | with a stop | 3h 49m | Kiwi.com |
| 13 Oct 2026 | 16 – 18 Oct 2026 | £495 | AS + F9 | with a stop | 3h 49m | Kiwi.com |
| 13 Oct 2026 | 23 – 25 Oct 2026 | £321 | AS | with a stop | 18h 42m | Kiwi.com |
| 13 Oct 2026 | 23 – 25 Oct 2026 | £286 | Alaska. Operated by Horizon Air as Alaska Horizon | nonstop | 2h 21m | Google Flights |
| 13 Oct 2026 | 23 – 25 Oct 2026 | £319 | AS + F9 | with a stop | 2h 21m | Kiwi.com |
| 12 Oct 2026 | 23 – 25 Oct 2026 | £321 | AS | with a stop | 18h 42m | Kiwi.com |
| 12 Oct 2026 | 23 – 25 Oct 2026 | £286 | Alaska. Operated by Horizon Air as Alaska Horizon | nonstop | 2h 21m | Google Flights |
| 12 Oct 2026 | 16 – 18 Oct 2026 | £488 | AS | with a stop | 21h 21m | Kiwi.com |
| 12 Oct 2026 | 16 – 18 Oct 2026 | £324 | Frontier | with a stop | 5h 59m | Google Flights |
| 12 Oct 2026 | 23 – 25 Oct 2026 | £319 | AS + F9 | with a stop | 2h 21m | Kiwi.com |
| 12 Oct 2026 | 16 – 18 Oct 2026 | £490 | AS + F9 | with a stop | 3h 49m | Kiwi.com |
| 12 Oct 2026 | 16 – 18 Oct 2026 | £490 | AS + F9 | with a stop | 3h 49m | Kiwi.com |
About San Diego
San Diego has the most reliable beach weather in the country, plus the famous zoo, Balboa Park, fish tacos and a laid-back surf culture.
San Diego from every city: when to go, where to stay, what to do
Questions about Boise to San Diego
What does a return from Boise to San Diego usually cost?
Over the last 60 days the typical price we found was £323 per person, taxes and fees included, across 18 checks; the lowest was £259.
When is the best time to fly from Boise to San Diego?
San Diego is at its best in March, April, May, August, September, October and November. Avoid June: June Gloom marine layer
Do I need a passport to fly from Boise to San Diego?
No passport needed for travellers from the United States: a government photo ID is enough for San Diego.
Prices converted from US dollars at the rate of 15 Oct 2026.